چي ؽ بعي فغي ؽ بعي )عخ زا ي( Stratigraphy and Paleontology (Oral Presentation)

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1 چي ؽ بعي فغي ؽ بعي )عخ زا ي( Stratigraphy and Paleontology (Oral Presentation) زمان: 4 اسفىذ ما 1393 خ رشیذی Date: 23 rd February 2015 مکان: سازمان زمیه شىاسی ي اکتشافات معذوی کش ر Venue: Geological Survey of Iran, Tehran 835

2 اعضبی و يت ع ي اجزایي ر یىزد کمیت علمی دبیر علمی: دکترطیب محتاط اعضاء: ا ب ٢٨ سؼ فؿ ط ا ب ٢٨ سؼ حؿٮ ٠ دطس ٤ اشض ا ب ز شط ح سضضب دطس ٤ اشض ا ب س شطظ ب ١ ذب ١ ز شطثسا ا ب ز شط دٮس ىطز ا ب ز شط ط ا ب س شط عز ا ب ز شط بؾ ١ ػاز ا ب ز شط ح س ا ب ز شط عب ٧ ط ا ب ز شط زا ١ كٮب ا ب ٢٨ سؼ نج ٤ ض ا ب ز شط ٣ ظ ط س ذب ١ ٢٨ سؼ ؾ ٨ طاث ذب ١ ٢٨ سؼ ؾ ٮ ب ١ ذب ١ ز شط حشبط ذب ١ ٢٨ سؼ ا ٦ سز ا ب ز شط ذب ؿبض ا ب ٢٨ سؼ بى ذب ١ ٢٨ سؼ ٣ ٮ ثبم ٮك ٦ ا ب ف ٮ ح س ب ا ب ز شط يٮس ذب ١ ٢٨ سؼ ثرك ٢ س ٥ ا ب ٢٨ سؼ ٤١ ض ٣ ظ ا ب ز شطزقشجب ذب ١ ز شط ٣ افؼ خ ٤ از ا ب ز شط ضح ش ا ب ز شطفجبؾ ا ب ز شط بزض ا ب ز شط جط ب ا ب س شط ح س ا ب ز شط ح کمیت اجرایی غسال ال يردی میگ وی 836

3 ... شط طبمبت رع بي آ ي ببر ي پيؾي ج جذیذی اس رع ب ذاری ص راعيه در ایزا زوشی خقيط عب ٧ ط ٣ طسض عب ٧ طد ٤ ض ذ ٮ آثبز ط ع ظ ٮ ٠ ق ٢ بؾ ٣ ا شكبىبر قس ١ ق ب قط ك ٤ ض زض ثبذشط ق ٨ طؾشب ثطزؾ ٠ )ق ب ظ بضس ب ٥ عاض ؾط ١ ر ٤ اة ) زض حس ىبن ؿ زض ٦١٣ ٣ ؿ ض ٤ س ٤ ا ث ٦ ؾشجطا شك اظ ؾٮ ز ٧ ب سٮط ٥ بؾ ٦ ؾ ٢ ٣ س ٤ ه ٧ ب ط ؿشب ٮ ٠ ٧ طا ٥ ثب س ٢ ب ٣ ث اظ ؾ ٢ آ ٧ ٧ ب ١ بظ ال ٦ ثب ثٮ ٠ ال ٧٦ ب بض ١ زض ثبالسط ٠ ثرف ثب ض ١٣ س ق ب ذب ٣ ض خ ٤٢ ة ثبذشط ضذ ٤ ٢ زاضز. ا ٠ عج بر ضؾ ٤ ث ٢ ؿ ٤ ة ث ٦ غ ٣ ضاؾٮ ٧ اظ ١ غ ٦ ١ ؾط ٣ ػ ٧ ب ؾ ٢ چٮ ٦٢ ا ٧ ٣ اظ ١ ؾط ظ ب آمبظ ٣ دب ب ضؾ ٤ ث صاض زض ثطزاض ١ س ٥ سيب ٣ ر ٧ ب ثبضظ ثب ضؾ ٤ ثبر غ ٣ ضاؾٮ زض ا طا ط ع ٣ ق ب ا طا ثبقس. ثطضؾ ٧ ب ١ بض ١ س ب ثط اؾبؼ ق ٤ ا ٥ ز ش ٠ ىؿٮ ق ٢ بؾ ٣ ثطزاقز ؾش ٤ چٮ ٦٢ ق ٢ بؾ حب Barremian( )Alenian Early ٣ زض حٮظ ضؾ ٤ ث صاض ثٮكشط س ٤ ا ١ س اظ آ اؾز ٦ ا ٠ س ٤ ا زض ىبن ٦ ظ ب ١ آ ٢ ٮ ٠ سب ثبض ٮ ٠ دٮكٮ ٠ غضه slope( )Deep basin to toe- of- ضاؾت قس ٥ اؾز. ا ٠ غب ق ٦ زض ثطزاض ١ س ٥ ح ب سبظ ٥ ا اظ ضؾ ٤ ث شاض ح ٤ ض ٦ غ ٣ ضاؾٮ زض ا طا اؾز ٦ ثب ق ٢ بذز ٣ غب ق ٦ اى ٧ ب خس س زض سيؿٮط خنطاىٮب ز ط ٦٢ ا طا ظ ٮ ٠ ٣ كو ظ ٣ ا ب ١ بق ٢ بذش ٦ ا اظ حس ٣ ز ٧٥ ب ضؾ ٤ ث کلیذ ياش ا: غ ٣ ضاؾٮ ثب ٤ اؾشطاسٮ طاى ٮش ٤ اؾشطاسٮ طاى حٮظ ضؾ ٤ ث ا طا ط ع ثطزؾ ٠. ؾبذشبض ثبقس. An Alenian Early Barremian sedimentary succession, new aspect of sedimentation of Jurassic in Central Iran basin Jafar Taheri & Morteza Taherpour Khalil Abad Geological Survey of Iran, NE territory & Geosciences Research Center A relatively thick sequence of marine sediments; includes of dark grey to black siltstone, turbiditic thin- to medium grained sandstone, crystalline tuffs, intercalation of marly limestone and marl in the upper parts, crops out in the west of Bardaskan city (north of Mazar - e - Sarnakhab), Central Iran. This package which has north east south west trend located in a sub-zone between Darouneh and Rivash faults. According to geological maps this unit attributed to the Shemshak silisiclastic succession and Upper Jurassic-Lower Kretaceous in previous studies during ; while our paleontological investigations showed an Alenian (based on well preserved ammonite in the base of section) and Early Barremian (based on index fauna and flora in the top of the section). Lithofacies and ichnofossils reveal that this succession deposited in a deep marine environments (Deep basin to Toe of slope) with a shallowing upwards trend. This research program open new insight on Jurassic basins in Iran and could help geologists to interpret the palaeogeography and geodynamic condition which governed on Jurassic basins in Iran. Keywords : Jurassic, biostratigraphy, lithostratigraphy, sedimentary basin, Central Iran, Bardaskan. 837

4 شارػ ا ي اس حض ر Chaetetid ب در عبس ذ پز د )ص راعيه يب ي( ج ة غزة طبظ * ب ار يلیپ ری گ درزی شا یه زمان احمذرضا خساعی غالمرضا میراب شبستری - 1 زا ١ ف آ ٤ ذش ٦ بضق ٢ بؾ اضقس چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ زا ١ ك ب ٥ ثٮطخ ٢ س bahare.vallipoor@yahoo.com - 2 ز شط ىؿٮ ق ٢ بؾ بضق ٢ بؼ اضقس ىؿٮ ق ٢ بؾ س ط ز ا شكبه shaahinzaman@yahoo.com - 3 اؾشبز بض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ ثٮطخ ٢ س arkhazaei@birjand.ac.ir - 4 زا ١ كٮبض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ف ب ٥ ثٮطخ ٢ س gshabestari@birjand.ac.ir ٧ ب )ضز ٥ ث ٦ ٧ طا ٥ طخب ٧ ب اؾ ط شٮ ٢ ب اظ ؾبظ ١ س ب ان ض و زض ؾبظ ١ س دط ٣ ز ٥ زض ثط ع ٤٢ Chaetetes sp. )Demospongea Chaetetid )خ ٤٢ ة مطة عجؽ ) ثبق ٢ س. غب ق ٦ ا ١ دب قس ٥ ثط ض ٣ ا ٠ ؾبظ ١ س ٢ دط ث ٦ ق ٢ بؾب س ٤ نٮو ٣ ق ٢ بؾب آ ذ ٤ ا ٧ ٮ دطزاذز. طز س ٦ زض ا ٠ غب ق ٦ ث ٦ کلیذ ياش ا: Chaetetid غ ٣ ضاؾٮ ؾبظ ١ س دط ٣ ز ٥. Primary reports of Chaetetids in Parvadeh Formation (middle Jurassic), South-West Tabas Valipouri goodarzi, B. *1, Zaman, Sh. 2, Khazaei, A. R. 3 and Mirab Shabestari, G Graduated from the Master of Paleontology and Stratigraphy, University of Birjand, bahare.valipoor@yahoo.com 2- Ph.D. of Paleontology, Exploration Directorate of NIOC, shaahinzaman@yahoo.com 3- Assistant Prof., University of Birjand, arkhazaei@birjand.ac.ir 4- Associate Prof., University of Birgjand, gshabestari@birjand.ac.ir The Chaetetids (Class Demospongea) in association with Scleractinan corals are the main reef builders of Parvadeh Formation in Mazino section (SW Tabas). Study of this Formation lead to identification Chaetetes sp. which we will describe it in this study; Keywords: Chaetetid, Jurassic, Parvadeh Formation. 838

5 1 ٮسا طب ع رخغبر ا ىتزیىي عض ری اس عبس ذ يؾب در يذا بسی عزخ ؽ ب ؽزق ب ذرعببط خ ٨ ب ١ جرف زا ١ كٮب ؾٮسف ق ا ٨ ب اؾس ٨ ب ١ س ٣ ؾش ض ٮ ٦ فط ٣ خ ٤ 4 1- زا ١ كٮبض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك س ٥ ف ٤ ظ ٮ ٠ زا ١ ك ب ٥ ذ ٤ اضظ س ٨ طا ا طا 2- اؾشبز بض دػ ٧٣ ك ب ٥ ن ٢ قز ١ يز س ٨ طا س ٨ طا ا طا 3- اؾشبز بض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك س ٥ ف ٤ ظ ٮ ٠ زا ١ ك ب ٥ ذ ٤ اضظ س ٨ طا ا طا 4- زا ١ كد ٤ بضق ٢ بؾ اضقس چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ زا ١ ك ب ٥ ذ ٤ اضظ sr.oroujloo@yahoo.com 62 غ ١ بظ حبن اظ ذطز ٥ ٧ ب حيبض ثرف ٤ ض اظ ؾبظ ١ س ٮكب زض چب ٥ ق بض ٥ زض ا ٠ غب ق ٦ ثط اؾبؼ غب ق ٦ بظ ؾطذ ٤ ٢ دط ث ٦ ق ٢ بؾب 3 ض ع ضذؿبض ٥ قب ٣ ؿش ٤ حب ٣ ثب ٤ ؿز ٣ ؿش ٤ - د ؿش ٤ حب ٣ ثب ٤ ؿز ٣ ؿش ٤-٣. ثط اؾبؼ چب ٥ ١ بض ٧ ب ٤ خ ٤ ز زض ا ٠ ٮسا ثب د ؿش ٤ حب ٣ ٤ ٤١ ٮشٮس شق ث ٦ حٮظ ٧ ب ال ٤ ٣ زض ب ثبظ ض خ قس اخطا ض ٣ MRGC س ٤ ؾظ ١ ط اىعاض غئ ٤ ال س ث ٨ ٮ ٦٢ ا ثب 5 ضذؿبض ٥ ا شط ثسؾز آ س ٦ ثب ض ع ضذؿبض ٥ ٧ ب ضؾ ٤ ث سغبث ذ ٤ ث ضا ١ كب ز ٧ س. کلیذ ياش ا: ؾبظ ١ س ٮكب ضذؿبض ٥ ا شط حٮظ ضؾ ٤ ث ق ب قط ث ٢ سضفجبؼ Study of Electrofacies of Guri Member ( Mishan Formation ) of Sarkhun Gas field, Northeast Bandar Abbas Jahanbakhsh Daneshian 1, Sayed Ali Moallemi 2, Elham Asadi Mehmandoosti 3, Roghaye Oroujloo 4 1- Associate Professor, Geology Department, Earth Sciences Faculty, Kharazmi University,Tehran, Iran 2- Assistant Professor, Research Institute of Petroleum Industry of Tehran (RIPI), Tehran, Iran 3- Assistant Professor, Geology Department, Earth Sciences Faculty, Kharazmi University,Tehran, Iran 4- M.sc student at Kharazmi University, Tehran, Iran The study of 62 thin sections of the Guri Member (Mishan Formation) for Sarkhun Gas field (well no.1) led us to recognize three microfacies including Bioclastic Wackstone, Bioclastic Wackstone Packstone and Nummulitids Wackestone - Packstone belong to Lagoon and Open marine environment of a ramp. Based on well logs in the Sarkhun Gas field, an optimized model was defined with MRGC method and Geolog software. In this model, five electrofacies with a Burdigulian age are suggested which shows a good correlation with identified microfacies in examined subsurface sections. Keywords : Mishan Formation, Electrofacies, Sedimentary environment, Northeast Bandar Abbas 839

6 . س ٤٢ ؿ ظ ؿش ىطا ٣ ا ؾبظ ١ س خ ٨ ط زض ٢ غ ٦ ثبفث 340 شط ث ٤ ز ٥ ٣ زض د ٤ ؿ ١ شب ح بزرعي پب ئ او صی عبس ذ ج ز در ؽ ب ؽيزاس ؿٮح اى 1٦ فجبؼ ٤ ؾو ظاز 2٥ * ٣ ؾٮس ح س ا ٮ ٠ بؽ ٮ 2 ٢ اؾشبز بض زا ١ ك ب ٥ آظاز اؾال ٣ احس قٮطاظ ط ٥٣ ظ ٮ ٠ ق ٢ بؾ - 2 بضق ٢ بؼ اضقس قط ز حيبض ا طا * ؿئ ٤ بسجبر. ا ٮ.abb.1357@gmail.com: ٮ ٤ شط ق ب قٮطاظ خبز ٥ قٮطاظ ط ٣ زقز طاض زاضز غ ٤ ضز ١ ؾط زض سكرٮم 9 ثٮ ٤ ظ ٣ ٢ غ ٦ ف ٣ ثٮ ٤ ظ ٣ ٢ غ ٦ ف ٮ طز س. ضرب ز ؾبظ ١ س ٤ ضز ١ ؾط ٤ ضز ١ ؾط ثب ثطزاقز 190 غ ٮ ط ٣ ؾ ٤ د ثسؾز آ س ٥ اؾز. ؾ ٠ ا ٠ ؾبظ ١ س زض غ ٤ ضز غب ق ٦ دب ئ ٤ ؾ ٠ دؿٮ ٠ سب ائ ٤ ؾ ٠ اؾز. حض ٤ ض ض ٣ ظ زاضا ثس ٣ ٢ يص ب ٢١ س ذب ٤١ از ٥ ٮ ٮ ٤ ٮس ١ كب ١ ط حٮظ ال ١٤ ث ٦ ٧ طا ٥ ق ٤ ض ثبال ثبقس. ٣ خ ٤ ز ىطا ٢ ٮيط ٧ ب ث ٢ شٮ ثب ز ٤ اض ٥ ضرٮ ب ٢١ س ١ كب Somalina stefanini اظ ب ٧ ف ف ٧ چ ٢ ٮ ٠ ٣ اىعا ف ٮعا ز ب ثبقس. ٣ خ ٤ ز ىطا ٢ ٮيط ٧ ب ث ٢ شٮ. ٧ چ ٢ ٮ ٠ حض ٤ ض ىطا ٢ ٮيط ٧ ب Be & Hamlin ( ب ٢١ س sp. Operculina ثب د ٤ ؾش ٦ ا كٮس ٥ ١ كب اظ ثرف ف زض ب ثبظ ثب ق ٤ ض ١ ط ب اؾز دالغ ب ٢١ س Globorotalia archeomenardii قبذم آث ٨ ب ط ب حسا آة ٧ ب ط قشس اؾز اض زض ا ٠ ثط سحز قطا ظ حبض ٥ ا ٣ ا ٮ ٤ سط ٣ ىٮ ن ٤ ضر. اظ عطى اخش بؿ زا ٦١ ٧ ب طث ٢ بس ٦ ٣ حض ٤ ض 1967(. اخش بفبر ظ ؿش ق ٢ بؾب قس ٥ ١ كب ز ٧ س ضؾ ٤ ث ص طىش ٦ اؾز ٦ ثطا ق ٮط د ٤ ف ٦ ٧ ب ىش ٤ ظ ٣ ئ ٠ حٮظ ا س ٥ آ اؾز ىطا ٣ ا ض ٣ ظ ٥ زاضا و ظ ث ٦ ٧ طا ٥ ز ط اخعا اؾ ش ب ٢١ س ثط ٤ ظ ٣ آ د ٤ ؾش ٦ ٧ ب ا ٮ ٤٢ زض بؾشط ٣ د ٤ ز ٣ ٧ ط بسٮذٮ )٦ ٨ شط ٠ ف ٢ بنط سك ٮ ز ٢٧ س ٥ ثب ٧٤ ط ٧ ب فس حض ٤ ض طخب ٨١ ب ٣ ثب ٤ ؾشط ٣ (Biostrom) ٧ ؿش ٢ س )(Flugel.2004) ٣ (Bioherm) خ ج ٧ ب ؾجع زض ضذؿبض ٥ ى ٤ ضا ٤ بث عج ٦ ث ٢ س ٧ ؿش ٢ س. کلیذ ياش ا: دب ئ ٤ ا ٤ ٤ غ * ؾبظ ١ س خ ٨ ط * قٮطاظ Paleoecology of Jahrum formation in the North of shiraz 1. Masih Afghah 2. *Abbas Yoosefzadeh 3. Seyed Mohammad Amin Kazemaini * E_mail: abb.1357@gmail.com This section located 15 kilometers road Shiraz-Marvdasht. Variation of paleobiotypes in jahrom formation in this section cause identification of 9 benthic Biozones and 1 plagic biozone. The thickness of this section is about 340m. Age of this section is early Paleocene to Eocene. Presence of non porous foraminifer like Miliolids, indicate a lagoonic zone with high salinity. Presence of benthic foraminifera such as Somalina stefaninii or Nummulites fichteli indicates a shallow environment and increase of temperature. Also presence of Operculina sp. With elongated shell shows a shallow open marine with normal to high salinity. Pelagic foraminifers such as Globorotalia archaeomonardii is an index fossil for tropical waters (Be & Hamlin 1967). Studying of Biozones assemblies indicate that sedimentation in this section occur in Tropical environment and Oligotrphic condition. This condition is ideal for creation of photozeon environments. In the other side Carbonate grain associations and presence of large benthic foraminifera with other carbonated skeleton such as Bryozoans, shell of Echinoderm, Gastropods and the lack of coral reef and green algae we can classify it in Foramol environment. Keywords : Paleoecology * Jahrom formation * Shiraz 840

7 ب اعتزاتي زافي ؾت بی وزتبع پيؾي در فتح آببد )ؽ ب غزة لبی ( ىبع ٦ ٧ بز ٣ ز شط چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ اؾشبز ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ ىطز ٣ ؾ ك ٨ س ا طا fhadavi@ferdowsi.um.ac.ir طضٮ ٦ ١ غ س ز شط چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ اؾشبز بض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ دٮب ٤١ ض ا طا m.n.moghaddam@gmail.com ٮسا ذسازاز ز شط چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ دٮب ٤١ ض ا طا lid_kh5@yahoo.com ىبع ٦ ضضبظاز ٥ زا ١ كد ٤ بضق ٢ بؾ اضقس چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ دٮب ٤١ ض ا طا smollaii@yahoo.com چکیذ : ثب س ٤ خ ٦ ث ٦ اضظ چٮ ٦٢ ق ٢ بؾ ١ ب ٤١ دال ١ ش ٤ ٧ ب آ ٧ خ ٨ ز سقٮٮ ٠ ؾ ٠ ال ٦ ٧ ب ضؾ ٤ ث ٨١ كش ٦ ٧ ب طسبؾ ٦ دٮكٮ ٠ ثطا غب قبر ثب ٤ اؾشطاسٮ طاى ثط اؾبؼ ١ ب ٤١ ىؿٮ ٧ ب آ ٧ ٦١٤ ١ ثطزاض قس ٥ ا ١ س. ٢ غ ٦ ٤ ضز غب ق ٦ ىشح آثبز ٣ ا زض ق ب مطة ب ٠ )حبقٮ ٦ قط ث ٤ ٤ ر( ز ثب. س ٤ ا ثطزاقز قس ٥ زض ٢ غ ٦ ىشح آثبز شك اظ ٤ ٢ طا بض ؾٮ ش ٣ ؾ ٢ آ ٧ اؾز. ٦١٤ ١ ٧ ب ث ٦ ض ٣ اؾ ٮطاؾال س آ بز ٥ ؾبظ قس ٥ ١ ب ٤١ ىؿٮ ٣ ٧ ب ا ٠ س ٤ ا ف ؽ ثطزاض قس ٥ اؾز. ١ ب ٤١ ىؿٮ ٧ ب ٤ خ ٤ ز زض ا ٠ ٢ غ ٦ زاضا س ٤٢ ؿ ١ ؿجشب ذ ٤ ة ٣ ىطا ٣ ا ١ ش ٤ ؾغ ٧ ؿش ٢ س. زض ا ٠ ثطضؾ 28 ٦١٤ شق ث ٦ 10 خ ٢ ؽ اظ ١ ب ٤١ ىؿٮ ٧ ب آ ٧ ق ٢ بؾب قس ٥ ٣ ثب ٤ ظ ٣ ٧ ب CC4٣ CC5 سقٮٮ ٠ طز س. ثط ج ٢ ب ثب ٤ ظ ٣ ٧ ب سقٮٮ ٠ قس ٥ ٣ ث ٦ ف ٤٢ ا ١ شٮد ٦ س ٤ ا ٤ ضز غب ق ٦ زض ٢ غ ٦ ىشح آثبز ٤٧ سط ٣٣ ٠ دٮكٮ ٠ سب ٤٧ سط ٣ ٠ دؿٮ ٠ دٮك ٨٢ بز طزز. کلیذ ياش ا: ١ ب ٤١ اؾشطاسٮ طاى طسبؾ ٦ دٮكٮ ٠ ىشح آثبز ب ٠ غب قبر ثب ٤ اؾشطاسٮ طاى ؾ ٠ Nannostratigraphy of the Early Cretaceous deposits in Fathabad (Northwest Qaen) Fatemeh Hadavi, Ph.D of stratigraphy and paleontology, Professor, Department of Geology, Ferdowsi University of Mashhad, Iran Marziyeh Notghi moghaddam, Ph.D of stratigraphy and paleontology, Assistant Professor, Department of Geology, Payame Noor University, I.R of Iran Lida Khodadadi, Ph.D of stratigraphy and paleontology, Department of Geology, Payame Noor University, I.R of Iran Fatemeh Rezazadeh, M.S student of stratigraphy and paleontology, Department of Geology, Payame Noor University, I.R of Iran By attention to the stratigraphic value of calcareous nannoplanktons for the age determination of sedimentary beds, Early Cretaceous deposits for biostratigraphical investigations based on calcareous nannofossils were sampled. The studied region is Fathabad located in North West Qaen (East margin of Lut Block). The sampled sequence in Fathabad region comprises of conglomerate, silty marl and limestone. Samples were prepared with smear-slides and nannofossils of this sequence are photographed. Present nannofossils in this region have relatively good diversity and medium abundance. In this investigation 28 species belong to 10 genus of calcareous nannofossils were identified and biozones, CC4 - CC5 were determined. Based on determined biozones and as a result of biostratigraphic studies, the age of the studied sequence in the Fathabad region Early Hauterivian to Late Hauterivian was suggested. Keywords: Nannostratigraphy Early Cretaceous Fathabad Qaen 841

8 چىيذ : یض ي بی پب ي صیىي عبس ذ د يچبی در ببختز رؽت و بي ب د مبیغ ی آ بب احي خب ری آثطازار بى ز شطAbradatmafi@gmail.com اح س ضئ ٤ ىٮب ز شط Raoufian_a@yahoo.com ث ٦ ٢ ؾ ٤ ض ا ١ دب غب قبر دب ٮ ٤٢ اؾشطاسٮ طاى ٣ دب ٮ ٤٢ ىبؾٮؽ ؾبظ ١ س ز ٮچب زض ثرف ثبذشط ضقش ٦ ٥٤ ثٮ ٢ ب ٤ ز ٣ ب ؿ ٦ آ ثب ٣ ػ ٧ ب دب ٮ ٤ ٤٢ غ ثرف ذب ٣ ض ثطق اظ ا ٠ ؾبظ ١ س ز ٮچب زض ا ٠ ح زض ثبذشط ق ٨ طؾشب اؾيطا ٠ ( ثط چ ٨ بضثطج( ث ٦ ع ٤ ض ٧ ت ثط ض ٣ ؾبظ ١ س ق ك طاض زاضز ٣ زض ٧ جط ثبال صض سسض د ا ١ شربة طز س. ؾبظ ١ س آ ثب عج بر ضرٮ ال ٦ آ ٧ چطرزاض ؾبظ ١ س الض ز س ٥ ق ٤ ز. غب قبر دب ٮ ٤ ٤٢ غ ٢ دط ث ٦ ق ٢ بؾب ٦١٤ 48 اظ زا ٤٢ ؾٮؿز ٧ ب ا ٠ س ٤ ا طز س ٣ ثط ا ٠ اؾبؼ چ ٨ بض ثب ٤ ظ ٣ سقٮٮ ٠ قس ٦ ثب ب ؿ ٦ ظ ٧ ٣ ب زا ٤٢ ؾٮؿش ثب ظ ٣ ٧ ب ظ ؿش اض ٣ دب مطث سغبث بث س ٤ خ ٨ كب ٧ س ٥ ق ٤ ز. زض ثط چ ٨ بضثطج س ط ع ف ٢ بنط دب ٮ ٤ ٤٢ غ زض د ٢ ح ىبؾٮؽ بث سي ٮ ثبقس. ثطضؾ ٣ ػ ٧ ب دب ٮ ٤ ٤٢ غ ثط ىط ع ٣ ا زض ثرف ذب ٣ ض ثٮ ٢ ب ٤ ز ٣ ثط چ ٨ بض ثطج زض ثرف ثبخ سط ١ كب ز ٧ س ٦ سقساز ٣ س ٤٢ ؿ زا ٤٢ ؾٮؿز ٧ ب زض ؾبظ ١ س ز ٮچب زض ثط چ ٨ بضثطج ثٮكشط اظ ثط ىط ع اؾز. اظ ١ ؾط دب ٮ ٤٢ اؾشطاسٮ طاى زض ثط ىط ع ٣ ثط چ ٨ بضثطج چ ٨ بض ثب ٤ ظ ٣ ٢ ٧ ب ث ٦ ؾ ٠ ثبغ ٣ ؾٮ ٠ دؿٮ ٠ - آ ؿي ٤ ضز ٠ دٮكٮ ٠ زض ؾبظ ١ س ز ٮچب بث سي ٮ اؾز. غب قبر دب ٮ ٤٢ ىبؾٮؽ ١ كب ز ٧ س ٦ زض ثط چ ٨ بضثطج د ٢ ح ىبؾٮؽ ٣ زض ثط ىط ع ؾ ٦ دب ٮ ٤٢ ىبؾٮؽ ثٮكشط اظ ثط ىط ع اؾز. ٣ اظ ١ ؾط ظ ب چٮ ٦٢ ا زض ظ ب ثبغ ٣ ؾٮ ٠ دؿٮ ٠ ذب ٣ ض ٣ ثبذشط ثٮ ٢ ب ٤ ز ز س ٥ ق ٤ ز. کلیذ ياش ا: زا ٤٢ ؾٮؿز ٧ ب دب ٮ ٤٢ ىبؾٮؽ ؾبظ ١ س ز ٮچب ضقش ٦ ٥٤ ثٮ ٢ ب ٤ ز بث سكرٮم ثبقس. ٧ طچ ٢ س ؾشجطا ؾبظ ١ س ز ٮدب زض ثط چ ٨ بض ثطج ٣ آ ؿي ٤ ضز ٠ دٮكٮ ٠ قجب ٧ ز ٧ ب ظ بز ٮب ز ٣ ثرف Palynological characteristics of the Dalichai Formation in the west of Binalud Mountains and its correlation with Eastern part Abradat Mafi, Ahmad Raoufian The Dalichai Formation studied in the western Binalud Mountains at west of Espharayen (Chehar Borj section). Well-preserved section of the formation sampled for palynological purpose. The Dalichai Formation is a lithostratigraphically outstanding unit in the Binalud Mountains where it disconformably overlies the Shemshak Formation and is in turn overlain by the massive carbonates of the Lar Formation with a transitional boundary. Forty-eight dinocyst species identified lead to identification of four biozones with an age of late Bajocian-Early Oxfordian and five types of palynofacies. This biozonation corresponds to those recognized in Northwest Europe and Central Alborz Mountains. Examination of the dinoflagellate cysts of the Dalichai Formation in the west and the east of Binalud Mountains lead to erection of four biozones with a similar age and three types of palynofacies at Fraizi section in the Eastern Binalud Mountains.Thickness of the formation at Chehar Borj section is more than Fraizi section and our studies have shown the close similarities between two areas in the late Bajocian and Early Oxfordian chronostratigraphically. Keywords : Dinocysts, Palynofacies, Dalichai Formation, Binalud Mountains 842

9 ذ رخظ ار ای عبس ذ ر ت )پز ي يب ي( در بحي حغ ىذر ا بزس زوشی ط ىشب ١ زا ١ كد ٤ بضق ٢ بؾ اضقس چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ سا ىشح بضق ٢ بؾ اضقس چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ آ ١ ب ٧ ٮشب ١ ػاز فض ٤ ٧ ٮبر ف زا ١ ك ب ٥ آظاز اؾال چب ٤ ؼ ر ٣ ا ضؾ ٤ ث دط ٮ ٠ ٮب ١ زض ١ بحٮ ٦ حؿ ٢ سض زاضا سط ٮت ؾ ٢ ق ٢ بذش مب ت آ ٣ اض ٣ ضذؿبض ٩ آ ٣ اض ( 1 S ا جطظ ط ع زاضا ب ٧ ٮز ر ٤ ط آ ٣ اض - طث ٢ بس ٦ اؾز. ثرف ظ ط ٠ ؾبظ ١ س ض ٣ س ٦ ثرف ثبال آ طث ٢ بس ٦ ثبقس. غب قبر نحطا ٣ آظ ب ك ب ٧ ث ٦ ق ٢ بؾب ؾ ٦ S( 3 ٣ ٣ چ ٨ بض ضذؿبض ٩ طث ٢ بس ٦ ) بزؾش ٤ آ ٧ ٠ ٧ ا ٢ شطا الؾز د ؿش ٤ ثٮ ٤ الؾز زاض ثٮ ٤ الؾز ٣ ؿش ٤ ٣ د ٤ ئٮس ط ٠ اؾش ٤ ( زض ا ٠ س ٤ ا ضؾ ٤ ث ا ١ دب ٮس ٥ اؾز. ي زض ب ف ث ٦ ف ٤٢ ا س ضذؿبض ٥ ا ضذؿبض ٧٥ ب آ ٣ اض سب رش ظ آ ٣ اض - طث ٢ بس ٦ ثرف ظ ط ٠ ا ٠ س ٤ ا ضؾ ٤ ث دٮك ٨٢ بز طز س ٥ اؾز. ٧ چ ٢ ٮ ٠ دالسيط طث ٢ بس ٦ ٤١ ؿ ض خ ٧ قٮت ث ٦ ف ٤٢ ا س ضذؿبض ٥ ا ضذؿبض ٧٥ ب طث ٢ بس ٦ ثرف ى ٤ ب ١ ؾبظ ١ س ض ٣ س ٦ زض ١ ؾط طىش ٦ قس ٥ اؾز. ثطضؾ ٧ ب ١ كب ز ٧ س ذٮع ١ ؿج ؾغح آة زض ب زض ا ٠ ١ بحٮ ٦ زض ٮب ٦١ ٧ ب دط ٮ ٠ ٤ خت دٮكط ٣ ضذؿبض ٧٥ ب ث ٦ ؾ ز ذك ٣ سجس حٮظ زض ب ف آ ٣ اض S 2 ث ٦ ض خ طث ٢ بس ٦ ٧ قٮت طز س ٥ اؾز. کلیذ ياش ا: دط ٮ ٠ ٮب ١ ؾبظ ١ س ض ٣ س ٦ س ضذؿبض ٥ ا ي زض ب ف ض خ طث ٢ بس ٦ ٧ قٮت حؿ ٢ سض. Facies Model of Ruteh Formation (Middle Permian) in Hasanakdar Area, Central Alborz Maryam Fatani, MSc student of Stratigraphy and Paleontology, sheida.fathi2007@gmail.com Sheida Fathi, MSc of Stratigraphy and Paleontology Anahita Keynejad, Faculty member of Islamic Azad University of Chaloos The Middle Permian sedimentary succession in Hasanakdar area (Central Alborz) has mixed siliciclasticcarbonate nature. The lower part of Ruteh Formation is dominantly siliciclastic and the upper part has carbonate lithology. Field and laboratory studies resulted in recognition of 3 siliciclastic (S 1, S 2, S 3 ) and 4 carbonate facies (Homogenous lime mudstone, Bioclastic intraclast packstone, Bioclastic wackestone and Peloid grainstone). Facies models of the lower and upper parts of Ruteh Formation were found "siliciclastic shallow marine shelf" and "Homoclinal ramp-type carbonate platform", respectively. The study shows that relative sea level rise in this area in the midst of Permian led to facies retrogradation and conversion of the siliciclastic shallow marine shelf to a homoclinal carbonate ramp. Keywords: Middle Permian, Ruteh Formation, Facies model, Siliciclastic shallow marine shelf, Homoclinal carbonate ramp, Hasanakdar. 843

10 بي عتزاتي زافي رع ببت ص راعيه يب ي و چىع ي طبظ عزفي بي س فزا يز Coniopteris hymenophylloides-klukia exilis در غتز ایزا ىبع ٦ ٣ افؼ خ ٤ از اؾشبز بض زا ١ ك س ٥ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ س ٨ طا ا ٠ ؾبظ ١ س زضثطزاض ١ س ٥ س ٢ ب ٣ ث اظ ال ٦ ٧ ب ظمب ٣ ؾبظ ١ س ٧ دس زض ٢ غ ٦ ٤ چ ق خ ٤٢ ة مطة عجؽ ؿشط ذ ٤ ث زاضز ب ط ٣ ىؿٮ ٧ ب ٮب ٧ ثبقس. ب ط ٣ ىؿٮ ٧ ب ٮب ٧ ا ٠ ؾبظ ١ س زض چب ٥ ا شكبى ق بض ٥ ٤ ضز 169 غب ق ٦ طاض طىز. سقساز 33 ٦١٤ شق ث ٦ 19 خ ٢ ؽ اظ ضاؾش ٦ ٧ ب رش و ا ٤ ئ ؾشب ٧ ب ىٮ ٮ ب ٧ ب س ١٤ ٮب ٧ ب ١ ٮ ؿ ١٤ ٮب ٧ ب ث ٢ شٮشب ٧ ب ٮ ٤ ٢ آ ٧ ب ٣ Klukia Coniopteris hymenophylloides. ثب س ٤ خ ٦ ث ٦ حض ٤ ض ٧ ب ٦١٤ قبذم دب ٢ ب ٧ ب ٤ ضز ق ٢ بؾب طاض طىش ٢ س Elatides thomasii ٣ Nilssonia ingens exilis ؾ ٠ آا ٢ ٮ ٠ - ثبغ ٣ ؾٮ ٠ ثطا ا ٠ د ٤ ف ٦ ىؿٮ ذبعط ١ كب طزز. ٣ Klukia exilis-nilssonia macrophylla Assemblage zone چ ٨ بض ظ ط ثٮ ٤ ظ ٣ ث ٦ سطسٮت اظ ثٮ ٤ ظ ٣ سد ق ث ٦ ١ ب -1 zone Sagenopteris nilssoniana-equisetites columnaris concurrent range -2 دب ٮ ٠ ث ٦ ثبال ث ٦ ١ ب ٧ ب Ginkgoites huttonii -3 Equisetites beanii-ptilophyllum harrisianum concurrent range zone زض Coniopteris hymenophylloides-nilssonia feriziensis Assemblage zone -4 ٣ taxon range zone ٢ غ ٦ ٤ چ ق عجؽ ثب ؾب ط ثٮ ٤ ظ ٣ ٧ ب ٧ اضظ ثبظ ٥ ظ ب ١ غ ٣ ضاؾٮ ا ٠ ؾبظ ١ س سقٮٮ ٠ طز س. ثٮ ٤ ظ ٣ ٧ ب ؾبظ ١ س ٧ دس زض Coniopteris ىطا ٮط ث ٦ ١ ب زض ١ شٮد ٦ دطا ٢ ف ثٮ ٤ ظ ٣ سد ق. ٮب ١ ١ ٮع ٤ ضز ب ؿ ٦ ٣ سغجٮ طاض طىز hymenophylloides-klukia exilis Assemblage zone زض س ب ؿشط ٥ ا طا ذبعط ١ كب طزز. کلیذ ياش ا: ب ط ٣ ىؿٮ ٮب ٧ ؾبظ ١ س ٧ دس ثٮ ٤ ؾشطاسٮ طاى عجؽ سغبث Biostratigraphy of the Middle Jurassic deposits of the Kouchekali, Tabas and introduce Coniopteris hymenophylloides-klukia exilis Biozone throughout Iran Fatemeh Vaez-Javadi; Department of Geology, University College of Science, University of Tehran, Tehran, Islamic Republic of Iran; vaezjavadi@ut.ac.ir Hojedk Formation is well-spread in the Kouchekali area, south western of the Tabas city. It consists of mainly grey-dark shale, siltstone and sandstone intercalating with coal seams. Here, the core number 169 was studied and plant macrofossils were collected. The Hojedk Formation contains thirty-three species of plant macrofossil 844

11 remains allocated to nineteen genera of various orders such as Equisetales, Filicales, Caytoniales, Bennettitales, Cycadales, Ginkgoales, and Pinales. On the basis of the occurrence of index fossils such as Coniopteris hymenophylloides, Klukia exilix, Nilssonia ingens, and Elatides thomasii Aalenian-Bajocian age is suggested for this assemblage. One assemblage zone (Klukia exilis-nilssonia macrophylla) and four subzones were recognized in this formation. These subzones are: 1- Sagenopteris nilssoniana-equisetites columnaris concurrent range zone, 2- Equisetites beanii-ptilophyllum harrisianum concurrent range zone, 3- Ginkgoites huttonii taxon range zone, and 4- Coniopteris hymenophylloides-nilssonia feriziensis assemblage zone. Biozones of the Middle Jurassic of Kouchekali area were correlated to the similar age sediments of the Mazino area (Tabas Block), Dansirit Formation in Baladeh and Rudbarak (Central Alborz Mountains), Bazehowz Formation in its type section (south Mashhad, Binalud Mountains).These correlations concluded that the Coniopteris hymenophylloides-klukia exilis Assemblage zone is widespread during the Middle Jurassic throughout Iran. Keywords : Plant macrofossil, Hojedk Formation, Biostratigraphy, Kouchekali, Tabas, Correlation 845

12 چي ؽ بعي فغي ؽ بعي )پ عتز( Stratigraphy and Paleontology (Poster Presentation) زمان: 4 اسفىذ ما 1393 خ رشیذی Date: 23 rd February 2015 مکان: سازمان زمیه شىاسی ي اکتشافات معذوی کش ر Venue: Geological Survey of Iran, Tehran 846

13 بزرعي فزای ذ بی دیبص شی در چبرچ ة چي بری عىب غي در عبس ذ و ب یىي اس يبدی خ يج فبرط ٨ ط ٤١ ضىٮق زا ١ كد ٤ بضق ٢ بؾ اضقس زا ١ ك ب ٥ س ٨ طا حؿٮ ٠ ضحٮ د ٤ ض ث ٢ بة اؾشبز زا ١ ك س ٥ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ س ٨ طا ٣ حٮس س ٤ اؾشبز بض زا ١ ك س ٥ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ س ٨ طا ؾبظ ١ س ٢ ب ث ٦ ؾ ٠ سط ب ؼ دٮكٮ ٠ اظ ٨ شط ٠ ؾ ٢ رع ٧ ب بظ طث ٢ بس ٦ ربظ ٧ ٮسض ٣ طث ٢ زض ز ١ ٮب ىطا ٢ س ٧ ب ز بغ ١ ع ١ ف ٨ زض ٢ شط ٣ ػ ١ ف ؿش ٮ ىطا ٢ س ز بغ ١ ع زض ٮيٮز رع ١ زض ٮبز ٠ ذ ٮح ىبضؼ اؾز. زض ثؿٮبض اظ ٧ ب رع ١ زاضز. ٨ شط ٠ فب زض سقٮٮ ٠ چ ١٤ ث ٦ خب ب ٥ ضذؿبض ٥ ٧ ب زض ثؿش ٦ ٧ ب ضؾ ٤ ث ٧ ط ؾ ب ١ ؽ ثؿش زاضز. زض ا ٠ غب ق ٦ اضسجبط ثٮ ٠ ىطا ٢ س ٧ ب ز بغ ١ ع ٣ ا ٤ ا ١ جبقش ضؾ ٤ ثبر زض چبضچ ٤ ة چٮ ٦٢ ١ بض ؾ ب ١ ؿ ٤ ضز ثطضؾ طا اؾبؼ ىطا ٢ س ٧ ب ز بغ ١ ع ثؿش ٦ ٧ ب ضؾ ٤ ث ٧ ط ؾ ب ١ ؽ ٣ اضسجبط ثٮ ٠ آ ٨١ ب آ س ٥ س ٤ ا ىطا ٢ س ٧ ب ز بغ ١ ع ذبل طث ٤ ط ث ٦ ٧ ط ثؿش ٦ ضؾ ٤ ث ضا ٤ ضز ق ٢ بؾب طاض زاز ٤ ضز ق ٢ بؾب طاض ٥ طىز ٣ ثب س ٤ خ ٦ ث ٦ اضسجبط ض طىش ٦ اؾز. ثط ا ٠ ٧ ب ثسؾز. ز ٣ ؾ ب ١ ؽ ضؾ ٤ ث زضخ ٦ 3 ثط اؾبؼ ض ١٣ س ف ٮ قس ٣ ف قس سكرٮم زاز ٥ قس ٥ اؾز ٧ ط ٦ ؾ ب ١ ؽ بث س ؿٮ ث ٦ ز ٣ ٣ سطاظ ثبال ثؿش ٦ ضؾ ٤ ة ر ضاظ دٮكط ١٣ س ٥ )TST( )HST( ثبقس. اظ ىطا ٢ س ٧ ب ز بغ ١ ع مب ت زض ثؿش ٦ ضؾ ٤ ث دٮكط ١٣ س ٥ ؾٮ ب ؿٮز ٣ ز ٤ ٣ ٮش قس ٣ زض ثؿش ٦ ضؾ ٤ ث دؿط ١٣ س ٥ ؾٮ ب ا ١ ٮسض ز ٣ ز ٤ ٣ ٮش قس ٣ ا ١ حال ثبقس. کلیذ ياش ا: ؾبظ ١ س ٢ ب چٮ ٦٢ ١ بض ؾ ب ١ ؿ ىطا ١ س ٧ ب ز بغ ١ ع ثؿش ٦ ضؾ ٤ ث. Investigating the Diagenetic Processes in Sequence Stratigraphic Framework in Kangan Formation; one of the fields in Persian Gulf Mehrnoush Rafiei 1, Hossain Rahimpour-Bonab 2, Vahid Tavakoli School of Geology, College of Science, University of Tehran, Tehran, Iran The Early Triassic carbonates of Kangan Formation are major gas reservoirs in Persian Gulf Fields. Diagenetic processes play a crucial role in controlling the reservoir properties of many hydrocarbon reservoirs in the world. The most significant factor in determining the direct role of diagenesis in reservoir quality depends upon facies architecture in systems tracts of sequences. This research is focused on the relationship between diagenetic processes and systems tracts in sequence stratigraphic framework. To do so, special diagenetic processes of systems tracts and their relationships were studied. Using these relationships, special diagenetic processes can be assigned to each system tract. According to shallowing and deepening trends, two third-order sequences were specified and each of which dividable into two system tracts including transgressive system tract (TST) and highstsnd system tract (HST). Moreover, the main diagenetic processes affecting this formation are dolomitization, cementation, stylolitization, and dissolution. Keywords : Kangan Formation, sequence stratigraphy, diagenetic processes, system trac 847

14 زجب بی یشئ )وزب يفز پيؾي ( بزػ اعذآببد ج ة ؽزلي ؽ زضب )ج ة غزة ایزا زوشی ) ٨ س ثبزدب )زا ١ كد ٤ ز شط ظ ٮ ٠ ق ٢ بؾ چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ )Mahdibadpa110@gmail.com ب ٥٣ ذب ؿبض )ز شط چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ )kavehkhaksar@gmail.com ف ٮطضب فبق ٤ ض )ز شط چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾashouri2001@yahoo.com ( ؾٮس اث ٤ ا بؾ ح ٤ ز ) بضق ٢ بؾ اضقس ضؾ ٤ ة ١ بؾ )Samahmudi@yahoo.com ث ٦ ٢ ؾ ٤ ض غب ق ٦ طخب ٧ ب طث ٢ ٮيط زض خ ٤٢ ة مطة ذطز بض ٥ ا طا ط ع ثط اؾسآثبز زض خ ٤٢ ة قط ق ٨ طضب ا ١ شربة اظ غب ق ٦ ثٮف اظ 20 غ ٮ ط ٣ ؾ ٤ د اظ ؾ ٤ ٢ اض ٧٥ ب طخب ١ ٦١٤ 2 شق ث ٦ 2 خ ٢ ؽ اظ طخب ٧ ب طخب ٧ ب ٤ ضز غب ق ٦ قب خ ٢ ؽ ٢ يطز قس. دؽ ض ٤ ٣ ظا ق ٢ بؾب قس ١ س. ٣ ىبؾٮ ٤ ٮز Diphyphyllum اؾز. خ ٢ ؽ Diphyphyllum ثطا ا ٣ ٮ ٠ ثبض اظ Paleosmilia Diphyphyllum lateseptatum ا طا عاض ق ٤ ز. ثطدب ٦ ؽ ٤٨ ض ٦١٤ ثط زض ٤ ضز غب ق ٦ ز ط ٢ س ٤ ا زضثط ٮط ١ س ٥ ا ٠ اؾز ٦ قبز ثب ظ ٣ ىطا ٮ ٢ ٮيط MFZ14 زض RC7 طخب ٨١ ب ٣ عئ ٠ دؿٮ ٠ اؾز. ؽ ٤٨ ض ا ٠ ٦١٤ كرم ٢٢ س ٥ ؾبة ظ ٣ طخب ١ β اض ٣ دب ثبقس ٦ قطه ثرف دبئٮ ٢ ظ طاق ٤ ة Warnantian )ثبالسط ٠ ظ طاق ٤ ة ٣ عئ ٠ ( اؾز. کلیذ ياش ا: طث ٢ ٮيط طخب ثط اؾسآثبز ٣ عئ ٠ The Visean (Early Carboniferous) Corals from Asad-Abad section, SE Shahreza (SW Central Iran) MahdiBadpa110@gmail.com;Mahdi Badpa, Ph.D. student of Paleontology and Stratigraphy Alireza Ashouri, Ph.D. of Paleontology and Stratigraphy; ashouri2001@yahoo.com Kaveh Khaksar, Ph.D. of Paleontology and Stratigraphy; kavehkhaksar@gmail.com Seyyed Abolghasem MahmoudiM.Sc. of Sedimentology: Samahmudi@yahoo.com In order to investigate of Carboniferous corals from SW Central Asad-Abad stratigraphic section was selected. After the studied of more than 20 thin section of coral fossils, we identified 2 species belong to 2 genera of roguse corals. These corals are included solitary genus of Paleosmilia and fasciculate genus of Diphyphyllum. Diphyphyllum is described from Iran for the first time. According appearance of Diphyphyllum lateseptatum age of the fauna is Late Visean. In the appearance of this species indicat RC7 β corals subzone and MFZ14 foraminifera zone Europe that are Lower Warnantian (lates Visean) in age. Keywords : Carboniferous, Coral, Asad-Abad section, Visean 848

15 سیغت چي بری عبس ذ آع بری در بزػ ؽ ی تطببك آ بب بزػ ؽ ؽزق الر ثط ب ا ب زا ١ كد ٤ بضق ٢ بؾ اضقس زا ١ ك س ٥ ظ ٮ ٠ ق ٢ بؾ دطز ؽ ف ٤ زا ١ ك ب ٥ س ٨ طا حؿ ٠ ض ١ دجطا اؾشبز بض زا ١ ك س ٥ ظ ٮ ٠ ق ٢ بؾ دطز ؽ ف ٤ زا ١ ك ب ٥ س ٨ طا زض ا ٠ غب ق ٦ ؾبظ ١ س آؾ بض اظ حبػ ظ ؿز ذ ٦٢ ١ بض ٣ دب ئ ٤ ا ٤ ٤ غ زض ثط ذ ٦٢ ق ٢ بؼ ؾغح االضض ق ٮ ٤ زض قط الض ٤ ضز ثطضؼ طاض طىز. ؾبظ ١ س آؾ بض زض ثط ص ٤ ض زاضا 80 شط ضرب ز ثبقس 33 ٦ غ ١ بظ س ٨ ٮ ٦ طز س. زض ثط ؾغح االضض ق ٮ ٤ 12 خ ٢ ؽ ٦١٤ 16 ٣ اظ ىطا ٮ ٢ ٮيط ٧ ب ث ٢ ٮ ق ٢ بؾب قس ٦ سقٮٮ ٠ ٢٢ س ٥ ؾ ٠ ا ٮ ٤ ؾ ٠ سغبث ثٮ ٠ ز ٣ ثط چٮ ٦٢ ق ٢ بؾ ؾغح االضض ق ٮ ٤ ٣ ق ٤ ١ كب ز ٢٧ س ٥ ١ ج ٤ ز ثب ٤ ظ ٣ )ض ٣ د ٮ ٠ دٮكٮ ٠ ( اؾز. ٣ ا ٢ س 58 (1965 (Wynd, زض ثط چٮ ٦٢ ق ٢ بؾ Archaias operculiniformis ز س ٥ ١ كس ٥ اؾز. ؾغح االضض ق ٮ ٤ اؾز. ث ٦ ز ٮ آ ٦ ١ دب ئ ٤ ا ٤ ٤ غ ا ٠ ؾبظ ١ س ١ كب ز ٢٧ س ٥ ٨١ كش ٦ قس ضؾ ٤ ثبر زض حٮظ ال ٤ ثب آة ٧ ب ط ى ٤ ق ٤ ض ثبقس. ثب ر ٣ خ ٦ ث ٦ حش ٤ ا ىؿٮ قطا ظ کلیذ ياش ا: آؾ بض ض ٣ د ىطا ىط دب ئ ٤ ا ٤ ٤ غ. Biostratigraphy and Paleoecology of Asmari Formation in Shamilu Section and correlation whith Shu section east of Lar Soraya Emami Kolli, School of Geology, College of Science, University of Tehran, emami_soraya@yahoo.com Mohsen Ranjbaran, Assistant Professor of school of Geology, College of Science, University of Tehran, ranjbaran@khayam.ut.ac.ir The Asmari Formation has been studied from Biostratigraphy and Paleoecology.The Asmari Formation in Shamilu Section was studied. The thickness is 80 m in this section. In this section 33 sample were taken, led to recognition of 12 genera and 16 species and age Rupelian for Shu section approved. The correlation between these two section shows that in Shamilu section the 58 biozone of Wynd (1965) is not be and Archaias operculiniformis wasnʼt seen. The Paleoecology of this formation suggested depositional setting included lagoon with warm and hypersalin water. Keywords: Asmari, Foraminifera, lagoon, Rupelian. 849

16 سیغت چي بری عبس ذ ج ز در غزة ؽ زوزد)اعتب چ بر حب بختيبری ) چٮ ٦٢ ق ٢ بؾ ٣ ىؿٮ ق ٢ بؾ زا ١ ك ب ٥ آظاز اؾال ٣ احس ذط آثبز ا طا * عٮج ٦ حؿٮ ٢ بضق ٢ بؼ اضقس ز شط ثطظ ٣ فؿ ط دٮطث ٤ ع اؾشبز بض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ آظاز اؾال ٣ احس ؿدس ؾ ٮ ب ا طا * دؿز ا شط ١٣ ٮ : t.hossini93@gmail.com ضؾ ٤ ثبر آ ٧ ؿبظ ١ س خ ٨ ط زضثرك ٨ ب ٣ ؾٮق اظاؾشب چ ٨ بض حب ٣ ثرشٮبض ث ٦ ٣ ػ ٥ زض ٤١ اح مطث آ ضذ ٤ ٢ زاض ١ س.ةض طز ٦١ ١ ق اق ٢ ب ثب ؾشجطا 217 شط قب ؾ ٢ آ ٧ ٧ ب ش ٤ ؾظ ال ٦ سب ضرٮ ال ٦ ٣ ؾ ٢ ٧ ب ز ٤ ٣ ٮش اؾز ٦ ث ٦ ن ٤ ضر ١ بدٮ ٤ ؾش ىطؾب ك ثط ض ٣ قٮ ٣ بض ٧ ب ؾبظ ١ س ٤ ضد ٣ زض طظ ثبال ث ٦ ن ٤ ضر دٮ ٤ ؾش ٦ ٣ سسض د زض ظ ط ؾبظ ١ س دبثس ٥ طاض طىش ٦ اؾز.اظ ا ٠ ثط چٮ ٦٢ ق ٢ بؾ 28 خ ٢ ؽ ٦١٤ 19٣ اظ ض ٣ ظ ثطا و ظ ٣ غقبس اظ ب ط ٣ ىؿٮ ٧ ب اظ جٮ خ ج ٧ ب ط ع ثط ٤ ظ ٣ ا ٧ ب ذبضد ٤ ؾشب ٣ ط ٧ ب ٦ ٤ ض ٣ ظ ثطا و ظ ثب ظ ط ظ ٣ ظ ؿش سد ق ا ق ٢ بؾب طز س.ؾ ٠ ؾبظ ١ س خ ٨ ط زض ثط ٤ ضز غب ق ٦ ث ٦ ف ز قجب ٧ ز د ٤ ف ٦ (Wynd, 1965)Nummulites-Alveolina assemblage subzone س ٤ ا ائ ٤ ؾ ٠ ٮب ١ ) ٤ سؿٮ ٠ - ثبضس ١٤ ٮ ٠ ( زض ١ ؾط طىز. کلیذ ياش : چٮ ١٦٢ بض ائ ٤ ؾ ٠ ؾبظ ١ س خ ٨ ط طز ٦١ ١ ق اق ٢ ب ق ٨ ط طز Biostratigraphy Jahrom Formation in westernshahrekord Tayebeh Hosseini Eslamic Islamic Azad University, Khorramabad Dr.BorzooAskaripirbaloutiIslamic Azad University, Masjedsoleyman Calcareous sediments of the Jahrom Formation are extensively outcropped in western Charmahal and Bakhtiary province.the thickness of Gardaneh- Nal-Eshkanan section in this formation has been measured with 217 meters length which includes medium to thick-bedded limestone layers and dolomitic rocks. This section is in the form of attrition discontinuities on the limestone, shale and marl of the Gurpi Formation and continuities and gradual textures under the Pabdeh Formation.From this stratigraphic section, it can be seen 28 genus and 19 species of benthic foraminifera and fragments of macrofossils such red algae, Bryuzooa, Echinoderms and tube worms are identified. According to the similarities between the benthic foraminifera of studied formation in this specific section with Nummulites-Alveolina assemblage subzone(wynd, 1965), it can be considered that the formation belongs to Middle Eocene(Lutetian - Bartonin). Keywords: stratigraphic, Eocene, Jahrom formation, Gardaneh- Nal-Eshkanan, Shahrekord 850

17 ت سیع تطببك سیغت چي بری زجب بی اعى زاوتي بی تزیبط پغي در ؽ ب اصف ب بب دی ز احي تتيظ ط ٢ ب ١ ز شط اؾشبز بض زا ١ ك ب ٥ دٮب ٤١ ض ط ٥٣ ف ظ ٮ ٠ ق ٢ بؾ س ٨ طا ج. ا. ا طا ؿٮ ٤ طخب ٨١ ب اؾ طا شٮ ٢ ب ؾبظ ١ س ١ ب ج ٢ س )سط بؼ دؿٮ ٠ ( ٢ بع ثب طآثبز ز ع ٤ ٣ ز ١ ج ٣ ا زض ق ب اني ٨ ب قب ٦١٤ ١ 400 ثبقس. زض آ ٨ ٧ ب ض ي ثرك ٨ ب ثٮسؾشب ٣ ح ٤ و ذب )ؾبظ ١ س ١ ب ج ٢ س( 14 خ ٢ ؽ ٦١٤ 26٣ ق ٢ بؾب طز س ٥ اؾز ٦ قب Astraeomorphidae, ذب ٤١ از ٥ ٧ ب : Stylophyllidae, Margarophylliidae, Coryphylliidae, Reimaniphylliidae Actinastraeidae, Cyclophyllidae, Pamiroseriidae, ثبق ٢ س. ا ٠ ٧ ب ٦١٤ طخب ١ ثب طخب ٨١ ب اؾ طا شٮ ٢ ب ح ٤ ض ٦ سشٮؽ اظ خ ٦ : آ خ بضدبسٮ ٠ خ ٤٢ ة قط آؾٮب )چٮ ٠ ثط ٦ ا ١ س ١٣ ع ٣ ىٮ ٮذٮ ٠ ( آؾٮب ط ع دب ٮط خ ٤٢ ة قط اض ٣ دب ٨ ؿشب ٣ ث نبضؾشب كبث ٦ ثبق ٢ س. طخب ٨١ ب ثرف ثٮسؾشب ثب س ٤ ظ خ ٨ ب ١ ؾغح ىؿٮ ٤١ ض ٠ ٮب ١ ٣ طخب ٨١ ب ثرف ح ٤ و ذب ثب س ٤ ظ خ ٨ ب ١ ؾغح ىؿٮ ٤١ ض ٠ دؿٮ ٠ - ضسٮ ٠ غبث ز زاض ١ س. کلیذ ياش ا: س ٤ ظ اؾ طا شٮ ٢ ب سط بؼ دؿٮ ٠ ب اني ٨ ب سشٮؽ. of Scleractinian Corals of Late Triassic Biostrtigraphical distribution and correlation in the North of Isfahan with other areas of Tethys Maryam Mannani, Assistant Professor, Geology Department, Payame Noor University, Tehran, I. R of IRAN. Collection of Scleractinian corals from The Nayband Formation (Late Triassic) of Bagher Abad, Dizlu and Margh areas (North of Isfahan) consist 400 samples. 14 Genus and 26 species of Scleractinian corals were recognized in reefal limeston of Bidestan and Howz- e- Khan Members (Nayband Formation). They included: Reimaniphylliidae, Margarophylliidae, Coryphylliidae, Cyclophyllidae Astraeomorphidae Pamiroseriidae, Stylophyllidae and Actinastraeidae families. These species are similar to fauna s Tethys: Alps, Carpathian, South- East of Asia (China, Burma, Indonesia and Philippines), Central Asia, pamir, South-East of Europe, Poland and Bulgaria. In the North of Isfahan, Scleractinian corals of Bidestan Member can be correlated with world distribution of Middle Norian coral level and Scleractinian Corals of Howz- e- Khan Member with world distribution of Upper Norian- Rhaetian coral level. Keywords : Distribution, Scleractinian, Late Triassic, North of Isfahan, Tethys. 851

18 خغت ی شارػ اس حض ر اجت بعبت ر دیتع ی در ؾت بی وزتبع ج ة غزة بجغتب بؾ ٠ ضضب ؾ ٤ ب ١ زا ١ كد ٤ بضق ٢ بؾ اضقس چٮ ٦٢ ١ بض ٣ ز ط ٦٢ ق ٢ بؾ زا ١ ك ب ٥ ثٮطخ ٢ س اح س ضضب ذعاف ز شط چٮ ٦٢ ١ بض ٣ ز ط ٦٢ ق ٢ بؾ اؾشبز بض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ ثٮطخ ٢ س مال طضب ٮطاة قجؿشط ز شط ؾ ٢ ق ٢ بؾ ضؾ ٤ ث زا ١ كٮبض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك ب ٥ ثٮطخ ٢ س ٨١ كش ٦ ٧ ب طسبؾ ٦ زض ز ٣ ثط ٣ ا زض خ ٤٢ ة مطة ثدؿشب ) عاض ٣ ث ٨ بثبز( اظ ز س ب ٥ چٮ ٦٢ ١ بض ظ ؿش ٤ ضز ثطضؾ طاض طىش ٦ اؾز. ع ثطضؾ ٦١٤ ١ ٣ ثطزاض اظ ال ٦ ٧ ب طث ٢ بس ٦ زض ثط ٧ ب ص ٤ ض حض ٤ ض اخش بفبر دط سطا اظ ز ٣ ي ٦ ا ٨ ب ض ٣ ز ؿز طسبؾ ٦ زض ٢ بض آثبض ؾب ط ث ٨ ط ب زض ب ثطا ا ٣ ٮ ٠ ثبض عاض طز ١ س. اخش بفبر ض ٣ ز ؿش ف سسب اظ ٤١ ؿ ٦١٤ حس ٣ ز ٣ س ٦١٤ ا ثبق ٢ س. ٧ ب ٦١٤ ١ بىز قس ٥ زض ثطضؾ ٧ ب س بس ث ٦ ذب ٤١ از ٥ ٧ ب ٧ ٮذ ٤ ض شٮس ٥ ٣ ضاز ٤ ٮشٮس ٥ ٣ اثؿش ٦ ثبق ٢ س ٦ ٧ ب ٦١٤ ١ غب ق ٦ ؾٮؿش بسٮ ٤ ب ؾ ٠ ز ٮ ضؾ ٤ ثبر ١ ح ٥٤ ٣ اضسجبعبر ز ط ٦٢ ظ ؿز خنطاىٮب ا ٠ سب ؿ ٤ ٧ ب ثب ح ٤ ض ٦ ٧ ب دب ٣ ض زض ظ ب سك ٮ ذ ٤ ا ٧ س ث ٤ ز. حض ٤ ض حيؼ قس بث س ٤ خ ٦ ٣ طاض ٮط زض ٣ ضقٮز ضقس زض مب ت اخش بفبر ٤ ضز غب ق ٦ زض ٦ ٧٣ ا ٣ ١ كب ١ ط ؿشط دالسيط طث ٢ بس ٦ طسبؾ ٦ ٣ حٮظ ضؾ ٤ ث زض ا ٠ ظ ب ثبقس. ثبظ ٢٢ ٤ س ٥ آة ٤٧ ا ٣ ط ٣ کلیذ ياش ا: ض ٣ ز ؿز اخش بفبر ض ٣ ز ؿش ٮش ٤ ؾ ٤ ا طا ط ع ث ٤ ٤ ر ث ٨ ج ٤ ز قطا ظ ظ ؿش - سنص ٦ ا ٣ قطا ظ First report of rudist assemblages in Cretaceous deposits, south west of Bajestan Yasaman Rezaei Soolgani, M. Sc. Student of Stratigraphy and paleontology, University of Birjand, rzyasi425@gmail.com Ahmadreza Khazaei, Assistant professor of Stratigraphy and paleontology, University of Birjand, arkhazaei@birjand.ac.ir Gholamreza Mirab Shabestari, Associate professor of Sedimentology and sedimentary petrology, University of Birjand, gshabestar@birjand.ac.ir In this research, two sections of the Cretaceous deposits have been studied biostratigraphically at southwest of Bajestan city (Mazar and Behabad villages). According to investigation and sampling of the mentioned carbonate rock units, presence of high-density assemblages of rudist bivalves accompanied by other marine invertebrates are reported for the first time. The rudist societies are mainly composed of paucispecific and monospecific types. Preliminary studies reveal that the collected samples belong to Hippuritidae and Radiolitidae families. So, systematic study will show accurate age of these sediments and palaeobiogeography relationship of these taxa with those from adjacent basins. The presence, proper preservation and growth position of majority of the studied congregation indicate the development of Cretaceous carbonate platform and also warm climate and improvement of sedimentary and environment-nutrition conditions of this time. Keywords : Rudist, Rudist assemblages, Lithosome, Central Iran, Lut block 852

19 بزرعي يىز فبعيظ ب حيط رع بي عبس ذ عز ن در چب د زا 23 )ج ة غزة ایزا ( 1- ق ٨ طا قط قش ز شطا ضؾ ٤ ة ق ٢ بؾ ٣ ؾ ٢ ق ٢ بؾ ضؾ ٤ ث اؾشبز بض زا ١ ك ب ٥ آظاز اؾال ٣ احس ؾبض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ ؾبض ا طا shariati@ayerma.ir ٣2* -آض ٮ ٠ ؾ ؿب ١ زا ١ كد ٤ ز شطا چٮ ٦٢ ٣ ىؿٮ ق ٢ بؾ زا ١ ك ب ٥ آظاز اؾال ٣ احس ف ٤ ٣ سح ٮ بر ط ٥٣ ظ ٮ ٠ ق ٢ بؾ س ٨ طا ا طا rmn.salsany@gmail.com 3- آ ؿب ض بز زا ١ كد ٤ ز شطا ىطا ٣ ض ٤ از قس ١ زا ١ ك س ٥ ٢٨ سؾ قس زا ١ ك ب ٥ س ٨ طا aisan.ramadi@ut.ac.ir چىيذ ؾبظ ١ س ؾط ٣ س ٤ ا آ جٮ ٠ سب س ٤ ض ١٣ ٮ ٠ ظ ط د ٦٢٨ ضؾ ٤ ث ظا طؼ چٮ ٠ ذ ٤ ضز ٥ زض ثرف خ ٤٢ ة مطة ك ٤ ض ضا قب طزز. ا ٠ ؾبظ ١ س زض ح ٤ ض ٦ ظا طؼ ثب ز ٣ ضذؿبض ٥ ف ٣ ف ٮ كرم ق ٤ ز ٣ ٮش ٤ ٤ غ آ زض چب ٥ ز ٧ طا 23 قب ؾ ٢ آ ٧ ٧ ب ذب ؿشط ضرٮ ال ٦ سب س ٤ ز ٥ ثطضؾ دشط ٣ طاى ىطآ ٢ س ٧ ب ا ض ٣ ز ؿز زاض ث ٦ ٧ طا ٥ ٮب ال ٦ ٧ ب اظ قٮ ٣ آ ٧ ضؾ ثبقس. ز بغ ١ ع ٣ ٮ ط ٣ ىبؾٮؽ ٧ ب ؾبظ ١ س ؾط ٣ زض چب ٥ ٤ ضز غب ق ٦ ث ٦ ٢ ؾ ٤ ض ٧ سه اظ ا ١ دب ا ٠ سح ٮ سقٮٮ ٠ ذه ٤ نٮبر حٮظ ضؾ ٤ ث آ ثبقس. ثطا د ثطز ث ٦ سط ٮت ب ١ ق ٢ بؾ ذه ٤ نٮبر ثبىش ٣ ف ٤ اضو ز بغ ١ ع 260 غ ١ بظ اظ نع ٧٥ ب چب ٥ ز ٧ طا - 23 س ٨ ٮ ٦ قس ٣ اؾز. ٤ ضز غب ق ٦ طاض طىز. غب قبر ا ١ دب قس ٥ ١ كب ز ٧ س ٦ ؾبظ ١ س ؾط ٣ زض چب ٥ ٤ ضز غب ق ٦ زض د ز ىط طث ٢ بس ٦ اظ ٤١ ؿ ض خ ٨١ كش ٦ قس ٥ اؾز. ثط اؾبؼ ٮ ط ٣ ىبؾٮؽ ٧ ب كب ٧ س ٥ قس ٥ ؾبظ ١ س ؾط ٣ زض ظ ط حٮظ ٧ ب ال ٤ حٮظ ال ٤ زض ب حس ٣ ز قس ٥ حٮظ زض ب ثبظ طث ٤ ط ض خ زاذ ٣ حٮظ ٧ ب ض خ ٮب ١ ٣ ض خ ذبضخ س ٦ ١ كؿز بىش ٦ کلیذ ياش ا: ٮ ط ٣ ىبؾٮؽ ض خ طث ٢ بس ٦ ؾبظ ١ س ؾط ٣ چب ٥ ز ٧ طا 23 ال ٤ ض خ زاذ ض خ ٮب ١ ض خ ذبضخ Microfacies and sedimentary environment analysis of Sarvak Formation in Dehloran 23 well (South west of Iran) 1- Shahram Shariati, PhD graduated in sedimentology and sedimentary petrology, Assistant Professor, Department of Geology, Sari branch, Islamic Azad University, Sari, Iran 2- Armin Salsani, PhD student in Stratigraphy & Paleontology, Department of Geology, Science & Research branch, Islamic Azad University, Tehran, Iran 3- Aisan Ramadi, PhD student in Mineral processing, Faculty of Mining Engineering, Tehran University Sarvak Formation comprise Albian to Cenomanian deposites of Zagros basin in south west part of Iran. Sedimentation of this Formation took place under shallow and deep conditions. The main lithology of Sarvak Formation in Dehloran-23 well composed thick to massive Rudist limestone with interbedded Shale and argillaceous limestone. The main purpose of this study was microfacies and petrographic analysis and diagenetic process investigation in order to determine paleoenvironmental condition. Regarding to determine the mineralogical composition, Textural characteristics and diagenetic process, 260 thin sections has been prepared and studied. The results denote that carbonate Ramp should be mentioned for Sarvak depositional environment in Dehloran-23 well. Microfacies analysis stabilize Lagoon, Restricted marine lagoons, Inner ramp of open marine and middle and outer ramp origin of Sarvak Formation in studied area. Keywords: Microfacies, Carbonate ramp, Sarvak Formation, Lagoon, Outer ramp, Middle ramp, Inner ramp 853

20 . زض ا ٠ ثط ضؾ ٤ ثبر دط ٮ ٠ بزرعي زس وزب يفز پز ي در بزػ ببغ بحي ؽيز ؾت 3 * 1 ز شط ث ٨ بءا س ٠ ح س 2 ز شط ؾٮس ف آ ب ١ جبس ز شط ح زضضب دطس ٤ آشض 1 ز شطا زا ١ ك ب ٥ آظاز اؾال ٣ احس ف ٤ سح ٮ بر س ٨ طا ط ٥٣ ظ ٮ ٠ ق ٢ بؾ س ٨ طا ا طا. 2 اؾشبز بض دػ ٧٣ ك س ٥ ؾبظ ب ظ ٮ ٠ ق ٢ بؾ ٣ ا شكبىبر قس ١ ك ٤ ض س ٨ طا ا طا. 3 زا ١ كٮبض ط ٥٣ ظ ٮ ٠ ق ٢ بؾ زا ١ ك س ٥ ف ٤ دب ٦ زا ١ ك ب ٥ آظازاؾال ٣ احس س ٨ طا ق ب س ٨ طا ا طا. mpartoazar@yahoo.com آزضؼ ا شط ١٣ ٮ ٤١ ؿ ٢ س ٥ ؿئ ٤ * : ثط ثبك ١٣ زض 45 ٮ ٤ شط ق ب ثبذشط ١ بحٮ ٦ عجؽ ٣ خ ٤٢ ة ١ بحٮ ٦ قٮط كز ٣ ا قس ٥ اؾز ؾبظ ١ س خ ب ث ٦ ضرب ز حس ٣ ز 270 شط ثب ١ بدٮ ٤ ؾش ثط ض ٣ ؾبظ ١ س ؾطزض طاض طىش ٦ اؾز. ؾذؽ ضؾ ٤ ثبر سط بؼ ظ ط ٠ ثط ض ٣ آق ٤ ة ٣ عئ ٠ ٧ چ ٢ ٮ ٠ ؾ ٠ ظ ٮ ٠ ق ٢ بؾ ظ ط عج بر دط ٮ ٠ ثبال ؾبظ ١ س خ ب طاض طىش ٦ اؾز. زض ا ٠ غب ق ٦ قس. ؾ ٠ ظ ٮ ٠ ق ٢ بؾ ؾبظ ١ س ؾطزض زض ثط ثبك ١٣ ث ٦ طث ١٤ ٮيط دٮكٮ ٠ ٣ احس ٧ ب 2٣1 ؾبظ ١ س خ ب )ثرف ثبك ١٣ ( ثب س ٤ خ ٦ ث ٦ ىؿٮ ٧ ب قبذم آ ث ٦ دط ٮ ٠ دؿٮ ٠ آق ٤ ة طمبثٮ ٠ ظ ط ٠ ١ ؿجز زاز ٥ The Study of Carboniferous Permian Boundary in Bagh Vang Section, Shirgesht Area M.R. Partoazar 1 *, B. Hamdi 2 & S.A. Aghanabati 3 1 Ph.D., Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran. 2 Assistant Professor, Research Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran. 3 Associate Professor, Department of Geology, Faculty of Science, Islamic Azad University, North Tehran Branch, Tehran, Iran. Study of Kuh-e Bagh Vang stratigraphic section has been done in order to study of Carboniferous-Permian Boundary deposits of Central Iran (Shirgesht Area). Bagh Vang Section is located some 45 Km to the northwest of Tabas and south of Shirgesht areas. In the mentioned section, the Permian deposits of the Jamal Formation with a thickness of 270 meters are underlain by the Sardar Formation disconformably. The formation is also overlain by Lower Triassic deposits of Sorkh Shale Formation. In this study geochronology of the Sardar Formation in Bagh Vang Section is attributed to Early Carboniferous, Visean, Moreover, geochronology of Member 1 and Member 2 of the Jamal Formation (Bagh Vang Member) is attributed to Late Permian, Early Murghabian according to the index fossils. 854

21 ت ری بی عبس ذ ا يىب در بزػ ؽ يزساد ؽ ب ع ب ٤١ س عب جب زا ١ كد ٤ بضق ٢ بؾ اضقس دػ ٧٣ ك س ٥ ف ٤ ظ ٮ ٠ ؾبظ ب ظ ٮ ٠ ق ٢ بؾ ٣ ا شكبىبر قس ١ ك ٤ ض ث ٨ بءا س ٠ ح س. اؾشبز بض دػ ٧٣ ك س ٥ ف ٤ ظ ٮ ٠ ؾبظ ب ظ ٮ ٠ ق ٢ بؾ ٣ ا شكبىبر قس ١ ك ٤ ض ضؾ ٤ ثبر سط بؼ زض ث ٢ س ٧ ب ا جطظ ؿشط ىطا ٣ ا ١ زاض ١ س ٣ زض ثطذ ٤١ اح ضرب ز بث س ٤ خ ٨ ضا زض ثط ٮط ١ س. ا ثط ٨١ كش ٧٦ ب ا ٠ ز ٣ ض ٥ زض ا جطظ ضؾ ٤ ثبر طث ٢ بس ٢ بع ف ٣ ؾ ٤ بض ٥ ضا قب ق ١٤ س ٦ ثب سنٮٮطاس زض ضرب ز زض ٢ بع رش و ا جطظ ث ٦ ع ٤ ض ؾبظ ١ س "ا ٮ ب" ١ ب ٮس ٥ قس ٥ ا ١ س. ا ٠ ؾبظ ١ س زض ا ثط ٢ بع ثٮط ٣ ظز اظ ٣ احس 2 سك ٮ طزز ا ب زاضا ٣ احس ؾ ٤ ١ ٮع ٧ ؿز ٦ زض آ ٢ بع ة ٥ ز ٮ ىطؾب ف اظ ثٮ ٠ ضىش ٦ اؾز. زض ثطذ ٤١ اح اظ خ ٦ ق ٨ ٮطظاز ٦ ٮعا ىطؾب ف شط ث ٤ ز ٥ ا ٠ ٣ احس 3 ؾ ٢ قب آ ٧ ٧ ب ٣ ض ٮ ٦ ٤ ز ٤ ٣ ٮز ٧ ب ٣ آ ٧ ٧ ب شج ٤ ض ٣ ضؾ اؾز ٦ خ قب ضرب ز 890 شط ضا زض ثط ا ب ثط اؾبؼ ثطضؾ ٮط ١ س. ؾ ٠ آ ٧ ٧ ب ٣ ضؾ ث ٦ ف ز سج ٤ ض دسز ؾ ٢ قس ٣ ز ١ ٮع ٣ س ٤ ا چٮ ٦٢ ٧ ب ٣ اظ ثٮ ٠ ق ٢ بؾ حسؼ ظز ٥ قس ٥ ٦ ا ٠ ؾ ٢ ضىش ٠ ق ٤ ا ٧ س ىؿٮ چ ٢ سا كرم ١ ٮؿز ٧ ب احش بال شق ث ٦ بض ١ ٮ ٠ ٧ ؿش ٢ س )آ ب ١ جبس 1383(. زض ا ٠ ب ٦ ثب ثطضؾ ٣ احس 3 ثط ق ٨ ٮطظاز ٦ ؾشجطا آ ث ٦ حس ٣ ز 380 شط ضؾس زض ١ بع ٦ شط زچبض ٧ ب سج ٤ ض قس ٥ ث ٤ ز ١ س 4 خ ٢ ؽ ٦١٤ ٣ ىؿٮ ٧ ب ٤ ٤٧ س ٤ ض ٠ كو طز س ٦ فجبضس ٢ س اظ:.T immissorbicula ٣ ؾ ٠ س ط ج ٢ ب ؾج ضا اضائ ٦ ز ٢٧ س ٦ احش ب زضؾز ث ٤ ز ؾ ٠ Achistrum (Achistrum) issleri Eocaudina sp. Priscopedatus triassicus Theelia immissorbicula اظ ا ٠ ٮب ز ٣.P triassicus ٦١٤ حسؼ ظز ٥ قس ٥ ضا اىعا ف ز ٧ س. کلیذ ياش ا: سط بؼ بض ١ ٮ ٠ ا جطظ ق ٨ ٮطظاز ا ٮ ب ٣ ضؾ ٤ ٤٧ س ٤ ض Holothurians of Elika formation, Shahmirzad section, north of Semnan Navid Taleban 1, Baha'odin Hamdi 2 1. Geological survey of Iran, navid.pc47@gmail.com 2. Geological survey of Iran Abstract : Most of Triassic rocks of Alborz Mountains are carbonate shallow water and platform deposits. With some changes in thickness in different sections they re generally called Elika formation. In most outcrops, this formation consists of two units but it also has a third unit which is destroyed as a result of erosion in those regions. In some areas like Shahmirzad with less erosion, these three units are Vermiculate Limestones, Dolomites and Veresk recrystallized Limestones which are 890 meters thick totally. Because of recrystallization, Veresk Limestones are not precisely dated but based on a few studies and also relative dating they have been assumed to belong to Carnian (Aghanabati, 2004). In this paper, by studying unit 3 of Shahmirzad section, about 380 meters thick, in beds with less recrystallization 4 genera and species of Holothurian were discovered: Achistrum (Achistrum) issleri, Eocaudina sp., Priscopedatus triassicus, Theelia immissorbicula Two of these, P. triassicus and T. immissorbicula indicate an approximate age, increasing the probability of the current assumptions. Keywords: Triassic, Carnian, Alborz, Shahmirzad, Elika, Veresk, Holothurian 855

22 سیغت چي بری ع بصز و د تي عبس ذ ا يىب در بزػ ؽ يزساد ؽ ب ع ب 1 ٤١ س عب جب ث ٨ بءا س ٠ ح س 2 1. زا ١ كد ٤ بضق ٢ بؾ اضقس دػ ٧٣ ك س ٥ ف ٤ ظ ٮ ٠ ؾبظ ب ظ ٮ ٠ ق ٢ بؾ ٣ ا شكبىبر قس ١ ك ٤ ض navid.pc47@gmail.com 2. اؾشبز بض دػ ٧٣ ك س ٥ ف ٤ ظ ٮ ٠ ؾبظ ب ظ ٮ ٠ ق ٢ بؾ ٣ ا شكبىبر قس ١ ك ٤ ض ضؾ ٤ ثبر سط بؼ زض ث ٢ س ٧ ب ا ٠ ا جطظ ؿشط ىطا ٣ ا زاض ١ س ٣ زض ثطخ ٤١ اح ؾشجطا بث س ٤ خ ٦ ضا زض ثط ٮط ١ س. ا ثط ٨١ كش ٧٦ ب ز ٣ ض ٥ زض ا جطظ ضؾ ٤ ثبر طث ٢ بر ٢ بع ف ٣ ؾ ٤ بض ٥ ضا قب ق ١٤ س ٦ ثب سل ٮطاس زض ؾشجطا زض ٢ بع رش و ا جطظ ث ٦ ع ٤ ض ؼ اظ ١ س "ا ب" ١ ب س ٥ قس ٥ ا ١ س. زض ١ بحٮ ٦ ق ٨ طظاز ا ٠ ؾبظ ١ س قب ٣ احس 3 ؾ ٢ آ ٧ ٧ ب ٣ ض ٮ ٦ ٤ ز ٤ ٣ ٮز ٧ ب ٣ آ ٧ ٧ ب شج ٤ ض ٣ ضؾ اؾز ٦ خ قب ؾشجطا 890 شط ضا زض ثط ٮط ١ س. ا ٠ ثط ثب ١ بدٮ ٤ ؾش ٧ ب ىطؾب ك زض بفس ٥ ٣ ا ١ ش ٨ ب ثط ض ٣ ؾبظ ١ س جبض ٣ ظ ط ؾبظ ١ س ق ك طاض ٮطز. س ٨٢ ب 131 شط ا ٣ ثط ) ٣ احس 1( زاضا ف ٢ بنط ٤٢ ز ١٣ ش ث ٤ ز ٥ ٣ ىؿٮ ٧ ب ز ٣ ٣ احس ز ط ب ال اظ ثٮ ٠ ضىش ٦ ا ١ س. ا ٠ ٣ احس زاضا 23 خ ٢ ؽ ٤٢ ز ١٣ ش ٦١٤ 50 ٣ اؾز ٦ زض س ٢ ب ٣ ث اظ ال ٦ ٧ ب ١ بظ آ ٧ ٣ ع ٤ ىب ١ bed( )storm طاض زاقش ٦ 9 ٣ ظ ؿزظ ٣ ضا سك ٮ ز ٢٧ س ٦ فجبضس ٢ س اظ: Induan: ancoraeformis zone, costatus zone, Furnishius assemblage zone Olenekian: obliqua zone, peculiaris zone, Gondolella assemblage zone, bicuspidatus zone, prioniodellides zone, triangularis zone ز ٣ ظ ٣ triangularis ٣ obliqua ثب ظ ٧ ٣ ب ٧٥٤ ب آ خ خ ٤٢ ث )1991 )Perri, زض ا شب ٮب غبث ز زاض ١ س. Abstract : کلیذ ياش ا: سط بؼ ا جطظ ق ٨ ٮطظاز ا ٮ ب ٣ ض ٮ ٦ ٤ ٣٠ ز ١٣ ز ظ ؿزچٮ ١٦٢ بض Conodont Biostratigraphy of Elika formation, Shahmirzad section, north of Semnan Navid Taleban 1, Baha'odin Hamdi 2 1. Geological survey of Iran, navid.pc47@gmail.com 2. Geological survey of Iran Most of Triassic rocks of Alborz Mountains are carbonate shallow water and platform deposits. With some changes in thickness in different sections they re generally called Elika formation. In Shahmirzad section, this formation consists of 3 units. Vermiculate Limestones, Dolomites and crystalized Limestones which are 890 meters thick totally. This section is separated by disconformities at the base and the end over Mobarak formation and under Shemshak formation. Only the first 130 meters of the section (unit 1) contains conodont elements and fossils of the other two units are totally destroyed. This unit contains 23 genera and 50 species of conodonts in an alternation of thin-bedded Limestones and storm beds that make 9 biozones as follows: Induan: ancoraeformis zone, costatus zone, Furnishius assemblage zone Olenekian: obliqua zone, peculiaris zone, Gondolella assemblage zone, bicuspidatus zone, prioniodellides zone, triangularis zoneobliqua and triangularis zones are comparable to Southern Alps zones from Italy (Perri, 1991). Keywords: Triassic, Alborz, Shahmirzad, Elika, Vermiculate, Conodont, Biostratigraphy 856

23 * 1 ضض ٤ ا ظاضؿ ظاز ٥ زا ١ كد ٤ ع رخغبر ب ؽزایط ت ؼ ی ي عبس ذ بخت یبری در ببختز ب ذرعببط ز شط ضؾ ٤ ة ق ٢ بؼ ٣ ؾ ٢ ق ٢ بؼ ضؾ ٤ ة زا ١ ك ب ٥ ھض ع ب zarerezvan@gmail.com ح ب ضضبئ ز شط ضؾ ٤ ة ق ٢ بؼ ٣ ؾ ٢ ق ٢ بؼ ضؾ ٤ ة اؾشبز بض زا ١ ك ب ٥ ھض ع ب peiman_rezaie@yahoo.com ح سحؽ ٠ خقيط ثط ٣ ار زا ١ ف آ ٤ ذش ٦ بضق ٢ بؾ اضقس ضؾ ٤ ة ق ٢ بؾ ٣ ؾ ٢ ٧ ب ضؾ ٤ ث زا ١ ك ب ٥ آظاز اؾال ٣ احس ق ٨ طثب ح سظاز ٥ ق ف ٤ سح ٮ بر زا ١ كد ٤ بضق ٢ بؼ اضقس ضؾ ٤ ة ق ٢ بؼ ٣ ؾ ٢ ق ٢ بؼ ضؾ ٤ ة زا ١ ك ب ٥ ٧ ط ع ب Sh.mohammadzade@yahoo.com ؾبظ ١ س ثرز بض )ظ ب د ٤ ؾ ٠ ب ١ -د ؿش ٤ ؾ ٠ ح كٮ ٠ ( زض ثبذشط ق ٨ ط ث ٢ سضفجبؼ زاضا ضذ ٤ ٢ ٧ ب دطا ٢ س ٥ اؾز.زض ا ٠ ؿشط ٥ ز ٣ ثط اظ ا ٠ ؾبظ ١ س ٤ ضز غب ق ٦ طاض طىش ٦ اؾز ؾبظ ١ س آمبخبض. زض ٧ ط ز ٣ ثط ؾبظ ١ س ثرز بض ثب طظ ٧ ب اظ ٤١ ؿ ١ بح ٤ ؾش ىطؾب ك ثط ض ٣ ٣ زض ظ ض ٨١ كش ٦ ٧ ب ف ٨ س حبضط ٣ ا ق ٤ ز. غب قبر نحطا ٣ آظ ب ك ب ٧ ٣ خ ٤ ز ز ٣ ضذؿبض ٥ ٤ ٢ طا چ ٢ س ٢ كب Gm( ( قطه دكش ٦ ٧ ب ٧ ب ز ٧ س. ع ٤ ١ ؾب ٣ خط ب ١ ثبال regime( )High flow ٣ بؾ ٦ ؾ ٢ ز آض ١ ب شSt( ( ١ كب ١ ط دكش ٦ فطو سب ظثب ٦١ ا ١ ؾب ٣ خط ب ١ دب ٮ ٠ regime( )Low flow ب ١ ب ان ب ىقب ض ٣ زذب ٦١ ثط س ٥ ثط س ٥ ) ؿ ٤ ( ضا ١ كب ثب س ٤ خ ٦ ث ٦ ٤١ ؿ ؾ ٢ ضذؿبض ٥ ٧ ب ٣ ؾبذز ٧ ب ضؾ ٤ ة ب ٢١ س س ٤ ا ٧ ب ث ٦ ؾ ٤ ى ؽ ب ١ ب ٨ ب ىطؾب ك ٣ ال ٦ ث ٢ س ش بع ٣ ب ؿ ٦ ا ٠ كره ٦ ٧ ب ثب س ٧ ب اضائ ٦ قس ٥ قطا ظ ثبذشط ث ٢ سضفجبؼ ض ٣ ز ذب ٦١ ثط س ٥ ثط س ٥ سكد م زاز ٥ قس. کلیذ ياش ا:) ؾبظ ١ س ثرز بض ثبذشط ث ٢ سضفجبؼ ؾ ٢ ضذؿبض ٧ ب قطا ظ س ٦ ١ ف ٢ ( ثبال ض عق ١٤ س ٥ ٣ خ ٤ ز ؾبذز ٧ ب ٥ ر ١ ف ٢ ؾبظ ١ س ثرز بض زض ) ؿ ٤ ) ز ٣ ض اظ ٢ كب اظ ٤١ ؿ ز ١٣ د زض دب ٮ ٠ زؾز رط ٣ ط اى ٦٢ آثطىز آة Rock facies and depositional conditions Bakhtyari Formation west of Bandar-e- Abbas Rezvan zarezadeh, Peyman rezaee, MohammadHoseen Jafari, Shahrban Mohammad zadeh Bakhtyari Formation (Middle Pliocene - Early Pleistocene) in west of Bandar-e- Abbas city has outspread outcrops. In this area two sections from this Formation has been studied. In these sections, Bakhtyari Formation is located on Aghajari Formation and under recent age deposits with erosional unconformity. Filed and laboratory studies indicated that polymictic Conglomerate Facies with sign of longitudinal ridges and High flow regime and Litharenaite Sandstones Facies with sign of Lateral to languid ridge and Low flow regime, original channel or active Braided river. According to rock facies and sedimentary structures as finingupward sequences, imbrication, erosional channels and cross bedding and Compared with standards modeling, depositional conditions of Bakhtyari Formation in west of Bandar-e- Abbas is distal Braided river that is Donjek type in Downstream of alluvial fan. Keywords :( Bakhtyari Formation, west of Bandar-e- Abbas, rock facies, depositional conditions) 857

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