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1 ی ا ی ا ی ا پترل شی ظال فتن ؼوار بیعت پ جن ب ار 5931 صفح تاض د زض افت: 1393/09/15 تاض د پص ط: 1394/03/17 ظ گؼ اظی شئ ؼیوی جایگا تکت یکی ظ گ ت د آتؽفؽا ی ف ذی ترظیری ؼوال ؼ ر فیرز )ؼوالؼرقی ایراى( آزاد هلکساد ؼفاردی * هحود حعي کرینپ ر آرز زارعی گط پػ ك اکتكاف شذا ط هؼس قطق ا طاى زا كگا فطزؾ هك س هك س ا طاى چکید ه غق ه ضز هغالؼ زض فاصل 15 ک ل هتط قوال ق ط ف طظ زض اؾتاى ذطاؾاى ضض قطاض زاضز زض خ ب قرطق کوراى هاگوا تطؾ ط ق چاى - ؾثعاض قطاض زاضز. ظه يق اؾ ه غق زضتطزاض س گساظ ا تا تطک ة زاؾ ت اؾت ک تر ز را ػو ق و ػو ق ت ص ضت اؾت ک ض ثل س گطا ز ض ت پ ضف ط زا ک گطا ز ر ض ت ال گ ؾري زض نى ور ش کرطز ا رس. ؾ گ ا نشض ي تا احس ا ضؾ ت خ اىتط پ ق س قس ا س. تافت احس زاؾ ت پر ضف ط ترا گل هطپر ضف ط تر فترط ترا ظه خط ا اؾت کا ا ک اضتع پالغ کالظ نلکال فلسؾپاض ض ثل س ه نتط ي ؾاظ س ا نى ؿت س. ت ز ض ثل س گطا ز ض ت پ ضف ط تافت پ ضف ط تا گل هطپ ضف ط زاضز کا ا کر اضتع پالغ ر کالظ نلکرال فلسؾرپاض ض ثل رس ضا زضتطه گ طز زض حال ک ت ز گطا ز ض ت تافت گطا الض زاضز تسى ض ثل س اؾت. تط اؾاؼ هغالؼات غئ ق و ا احرس نتكوكا ت ز ا و ش اؾ س اظ ع هتانل ه ؼ پتاؾ ن هت ؾ ظ ؿت س ت گطا ت س ا ع I هتؼل رق ؿرت س. غ قسگ ػ اصط LREE ؿثت ت HREE ػ اصط LILE ؿثت ت HFSE تكک ل هاگوا ضا زض پ فطضا ف تأ س ه ک رس. هصاب ن ا اظ شبترك نهو ث ل ت گاض تزاض )ت ي 10 تا 25 زضصس( تكک ل قس اؾت. هقاز ط اکؿ س ا اصل غ قرسگ ػ اصط LREE ا داض ػوستا هثثت Sr هقساض تاال Eu )ت ف اظ 499 گطم زض تي( هقساض کن Y )کنتط اظ 13 گطم زض تي( Yb )کنتط اظ 1/4 گطم زض تي( كاى ه ز س ک هاگورا ا ري تر ز را ها رت هاگوا را نزاک تر پرطؾر ل ؽ ضا زاض رس. ؾ گ ا و ش نتكوكا قوال ق ط ف طظ احتواال اظ شبترك ضق اق ا ؾ فطضا رس قرس خر اى زاؽ تر تت ؽ ؾثعاض گ گ قت ا ض نى زض حاق قاض ت ضاى تكک ل قس ا س. اش کلیدی: غئ ق و گطا ت س ع I ق ط ف طظ کواى هاگوا ق چاى - ؾثعاض ا طاى هقده اح رر قرر ط ف ررطظ زض خ رر ب قررطق کورراى هاگور ا ؾر ظ ک ق چر اى - ؾرثعاض قرطاض گطفتر اؾت )قرکل 1(. ا ري کوراى هاگورا ترا ؾري ائ ؾري ترا پل ؿت ؾري زض اف ل رت ؾرثعاض اعرطاف نى ور ش کطز اؾت ت ؾوت قروال ترا کر را الثرطظ ازاهر * shafaroudi@um.ac.ir Copyright 2016, University of Isfahan. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( which permits others to download this work and share it with others as long as they credit it, but they cannot change it in any way or use it commercially.

2 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض زاضز )1991.)Alavi, تررط اؾرراؼ هغالؼررات Spies وکرراضاى )1983( ؾرر گ ررا نتكوكررا ورر ش کوراى تر ؾر گرط ؾر گ را نشض ري حرس اؾرظ ائ ؾرري ؾرر گ ررا اؾرر س ال گ ؾرري - پل ؾرري ؾرر گ ررا نلکررالي ه ؾرري - پل ؿت ؾرري )نلکررال تاظالررت ق قرر ت( تقؿرر ن هرر قرر ز. اظ لحرراػ غئ قرررر و ا ز گررررط ال احررررس ا نشض رررري )ؾر گ را اؾر س حرس اؾرظ( هترانل ه ؼ ترا پطنل ه ر ؼ ؿرت س تر ؾر گ را کالرکنلکرالي پتاؾر ن هت ؾ رظ هتؼل رق ؿرت س زض حرال کر گرط ؾر م کر هقرساض کرنترط اظ ا ري کوراى ضا تكرک ل زاز ا رس ها رت هترانل ه ؼ نلکرالي پتاؾر ن تراال ترا ق قر ت زاض رس. ور ا ري احرس ا نشض ري زض رک پ ر فرطضا ف تكرک ل قرس ا رس Spies et al., ( وکرراضاى )2010( كرراى زاز ررس Ghasemi.)1983 ؾرر گ ررا نتكوكررا ترر غى زض خ رر ب ق چرراى ها رت هاگوات ؿرن نزاک تر غ ر اظ ؾر ل کا زاض رس کررر هح ررر ل نذرررط ي هرررصاب رررا حاصرررل اظ شبتركرر ضقرر اق ا ؾرر فطضا ررس قررس خرر اى زاؽ تررر تت ؽ ؾرررثعاض گررر گ قرررت ا ض نى اؾررت. ) ( ررع ؾرر گ ررا Nasrabadi ت رال ت - تط دو تر زا ک ر را ز اتراظ زاذرل ن ا ضا زض ه غقر ؾرلغاىنتراز )قروالقرطق ؾرثعاض( تررا شبتركرر ضقرر اق ا ؾرر فطضا ررس قررس تكرر ک ل هرر صاب نزاک ترر زض اػورراق ررک پ رر فررطضا ف زاؽ هررطتثظ زا ؿررت اؾررت. Jamshidi وکرراضاى )2014( گ ثررس ا نزاک ترر پطؾرر ل ؽ ائ ؾرري ف قررا تررا پل ؾرري تررا تطک ررة ن ررسظ ت تررا ض ل ررت ضا زض غررطب قرروال غطترر ؾررثعاض تررا شبتركر ر ک ؾر گ ه ثر غ اکلر غ ت را گاض رت نهو ثرر ل ت حاصررل اظ زگطگرر ضقرر اق ا ؾرر فطضا س قرس تر ظ رط لثر خ ر ت پ ر الثرطظ قرطق هررطتثظ کررطز ا ررس. ه غقرر هرر ضز هغالؼرر زض 15 ک لررر هتط قررروال قررر ط ف رررطظ زض هدررراضت ضؾتا ذرا لق قرطاض زاضز ه عتراى کرا ؾراظ ن ري اؾت )قکل 1(. قکل 1- A( ه قؼ ت خغطاف ا ه غق قوال ق ط ف طظ زض قوالقطق ا طاى B( هدو ػ نتكوكا - و ش تطؾ ط ت ي ؾثعاض ق چراى )ت ط ال تغ ط افت اظ Sahandi وکاضاى )2002(. ر چ گ ر هغالؼرات قثلر زضتراض ػگر را غئ قرر و ا پتطغ ررع ؾرر گ ررا نشض رري ا رري ه غقر خر ز رساضز. رسف اظ ا ري هغالؼر تطضؾر غئ قرر و پتطغ ررع تؼ رر ي خا گررا تکترر ک ؾرر گ ررا نتكوكررا ورر ش زض گ قرر خ رر ب قررطق کورراى هاگوررا ق چرراى - ؾررثعاض اؾررت.

3 ت ق ر ک کز ر 159 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( تر قرک وا رس کوراى را هاگورا ز گرط تطضؾر تررف را هرتلرا ا ري کوراى رع هر ت ا رس ترطا زضک فطا ررس ا زضگ ررط زض شب پ ؾررت گ قررت زض ه ررراعق فرررطضا ف هو رررس تاقرررس. رررنچ ررر ي ق اؾررا خا گررا تکت هاگوررا ه رراعق هرتلررا ا ي کواى زض اکتكراف شذرا ط هؼرس اتؿرت تر ن را قف ت ؾعا زاضز. زهیيؼ اظی ه طق کواى هاگورا ؾر ظ ک ق چراى - ؾرثعاض تر ػطض 100 تا 150 ک ل هتط اظ قوال ؾثعاض ترا خ ر ب ق چاى ع ل 200 ک ل هتط اظ فطهس ترا كرات ض ازاهر زاضز زض حاق قروال ذطزقراض ا رطاى هطکرع قرطاض زاضز. فؼ ال ا هاگوا ا ي اض نتكوكرا - ور ش اظ ائ ؾي )حسز 40 ه ل ىؾال قثل( قطع قس اؾرت تا پل - پل ؿت ؾي )حسز 2 ه ل ى ؾال قثل( ازاه زاقرت اؾرت 1983( al.,.)spies et ؾري ؾر گ را نشض ري ا ري کوراى اظ ائ ؾري زض خ ر ب )زض عز کر اف ل ت ؾثعاض( تا پل - پل ؿت ؾي تر ؾروت قروال )خ ب ق چاى( تغ ط ه ک س. ه غق ه ضز هغالؼ ک زض خ ب قطق ا ي کواى هاگوا قطاض زاضز زض قوال غطت قك ظهر يق اؾر 1: كات ض 1998( al., )Ghaemi et قرطاض زاضز. تط اؾاؼ ا ي قك و احس ا نشض ي ا ري هحرسز ن سظ ت تا زاؾ ت هؼط ف قس ا س. اها هغالؼات صرحطا نظها كگا ا ي تحق ق كاى زاز ک ت ز ا ػو و ػو ق تا تطک ة اؾ س ع زض ه غق ضذ ور ى زاض س )قکل 2(. تط اؾاؼ ضاترظ صرحطا قرس نترط ي ؾ گ ه غق احس زاؾ ت اؾت ک تا ک ض س قروال غطت - خ ب قرطق زض قروال قرطق اح ر هر ضز هغالؼ )ک اض ضؾتا ذا لق( ز س هر قر ز هرطظ نى ػوستا تا احس ا ضؾ ت اعطاف گؿل اؾت )قکل 2 قرکل 3- A(. تر ز را ور ش اؾر س زض نى ور ش کرطز ا رس. ؾر گ را ضؾر ت ائ ؾري کر ک گلر هطا هاؾ ؾ گ ؿت س تا زاؾ ت تا رک هرطظ هؼور ل زض تطذ قاط پ ق س قس ا س ک كاى ه ز س ؾ گ ا نشض ي ه غق ت پؽ اظ ائ ؾي هطت ط ؿت س. ت راتطا ي تط اؾاؼ قف ظهر يق اؾر كرات ض ؾري احرس ا نشض ي ال گ ؾي زض ظط گطفت قس اؾت. زاؾ ت ض رگ ذاکؿرتط ضقري تافرت پر ضف ط زاضز زض و ر زؾت ت ا زضقتتل ض ا ض ثل س ز س ه ق ز. ؾ گ ا و ش ع زض ع ل ک گؿل تر قرکل زا ک تا ض س قطق - غطت زض خ ب ه غقر ضذ ور ى زاض ررس )قررکل 2(. ا رري احررس ا اؾررت ک ض ثل ررس گطا ز ض ت پر ضف ط زا رک گطا ز ر ض ت ؿرت س. ضگ ا کا ؾاظ ن ي کر اظ تحرپ پرػ ف حاضرط ذاضج ؿت س زض احس ض ثل س گطا ز ض ت پر ضف ط تكک ل قس ا س ه خة زگطؾا پطپل ت رک کرنترط نضغ ل ک زض ؾ گ ا و ش نتكوكا اعطاف ذر ز قررس ا ررس. احررس ض ثل ررس گطا ز ض ررت پرر ضف ط ذاکؿتط ض گ )قکل 3- B( تافت پر ضف ط ترا ظه ر زا زضقت زاضز حاق ا دواز ؾط غ زض هطظ نى ز رس ه ق ز ت ع ض ک ت ؾوت زاذل ت ز تافت ؾ گ ا زا زضقرتترط ض رگ نى ضقريترط هر قر ز. کر اضتع فلسؾپاض ا ض ثل س کرا را زضقرتتلر ض نى ضا زض و زؾت تكک ل ه ز رس. احرس گطا ز ض رت تر قکل زا ک چک زض خ ر ب هحرسز ضذ ور ى زاضز )قکل 2(. تافت نى زض و زؾت گطا ر الض اؾرت اظ ک اضتع فلسؾپاض تكک ل قس اؾت. ؾ هاضى 3- A( تا ل ع ا لت اؾت ى ق ل ا قطهرعض رگ )قرکل اظ غ پؽ ت ؾي ه ؾي ت ضراهت 150 تا 200 هتط ض ؾ گ ا نشض ي ال گ ؾري قرطاض زاض س )قکل 2(. وکاضاى )1998( هؼتقس رس Ghaemi ک ا ي ضؾ تات زض ک هح ظ ک الت ت ك ي قس ا رس. ض رتق اؾ پؿت تپ ها ض ض گ ػ ا ي احس زض ت ي ؾ گ ا نشض ي ذاکؿتط ض رگ کر اضتواػرات ذكي ه غق ضا ت خر ز نضز ا رس ن را ضا اظ گرط کرراهال هتوررا ع هرر ک ررس )قررکل 3- A(. نگلرر هطا

4 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض تكک لقس اظ قغؼات تر ف اؾر س زاؾر ت زض ظ رط احس نتكوكا زاؾ ت ه غق زض قوالقطق قوال ت قرکل ضذ ور ى کر چک زض خ ر ب قكر ز رس ه ق ز )قکل 2( ک تط اؾاؼ قك كات ض ؾي نى ت پل ؾي ه ضؾس. ک گل هطا پل ؾي تا ه ىا ال ا اظ هاؾ ؾ گ هاضى ع زض قوالقرطق خ ر ب غطتر ز رس هر قر ز )قرکل 2(. ا ري ک گلر هطا خ ضقرسگ ضؼ و زاضز. قکل 2- قك ظه يق اؾ ه غق قوال ق ط ف طظ )قوالقطق ا طاى(. قکل 3- ت ط ا صحطا اظ: A) احس زاؾ ت ذاکؿتط ض گ اضتواعؾاظ احس هاضى ؾ لت اؾت ى ق ل کطه قطهرعض رگ ه ؾري ترا ض رتق اؾ تپ ها ض B) اؾت ک ذاکؿتط ض گ ض ثل س گطا ز ض ت پ ضف ط )قوال ق ط ف طظ قوالقطق ا طاى(.

5 ی ا ي ر 161 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( رغ ا جام پص ػ ترطا ت ر قكر ظهر يق اؾر ه غقر قر ط ف رررطظ اتترررسا تطزاقرررت اع الػرررات صرررحطا و رر تررطزاض اظ احررس ا ؾرر گ زض ه غقرر ا ترر ؾرؼت تقط ثر 40 ک لر هتط هطترغ ا درام قرس. تر ف اظ 200 و ر اظ ؾرغط ه غقر خورغنض قرس س کر اظ ه رراى ن ررا 130 هقغررغ رراظک ت رر تطضؾرر قررس س. قكرر ظهرر يق اؾرر ه غقرر زض ررطمافررعاض ArcGIS ت ررر قرررس. پرررؽ اظ هغالؼرررات زق رررق پتطگطافرر تؼررساز 20 و رر اظ احررس ا نشض رري ه غقرر )10 و رر اظ ؾرر گ ررا نتكوكررا 10 و ر اظ تر ز را ور ش ( کر حرساقل زگطؾرا ضا زاقرت س را کراهال ؾرالن ت ز رس ترطا تطضؾر را پتطل غ ک ا ترراب قرس س. و ر را پرؽ اظ ذرطزا ف نهاز ؾراظ زض قرطکت تدع ر ک رسگاى کا ؿراض ا تلرر ض ي نهترر ؽ قررطق تررطا اکؿرر س ا اصررل تررا XRF ض تدع رر قررس س هقررساض Loss ( L.O.I. )on ignition ن را ا رساظ گ رط قرس. رنچ ر ي ا و ا ترطا تدع ر ػ اصرط فطػر ذراک رازض تر نظها كررگا ACME کا ررازا اضؾررال تررا ض -MS ICP تدع ر قرس س. ض نهراز ؾراظ و ر را شب قل ر ا تررا کررس 4B03 تر ز اؾرت. تررا ح تدع ر تررا ررطمافررعاض GCD.kit پررطزاظ اظ و زاض ررا الظم پتطلرر غ ک تررطا تؼث ررط توؿرر ط ا الظم اؾررتواز قس اؾت. پترگرافی ظ گ آذریي داظیت: تافت نى پ ضف ط ترا گل هطپر ضف ط ترا ظه زا ض ع تا زا هت ؾ رظ ترا تافرت خط را اؾرت. حسز 10 تا 15 زضصس حدو زضقتتل ض ز س ه ق ز کرر زضتطزاض ررس 3 تررا 5 زضصررس حدورر پالغ رر کالظ )ال گر کالظ( 2 ترا 3 زضصرس حدور نلکرال فلسؾرپاض )ؾا س ي( 4 تا 5 زضصرس حدور ض ثل رس 1 ترا 2 زضصس حدو ک اضتع اؾت. کا را ت رط )کرسض( کر ػوستا هگ ت ت ؿت س ت ص ضت قکلزاض تا و قکلزاض تؼض زض اتؼاز /0 2 حرس 1 ترا 2 زضصرس ه لر هترط زض حدور هكرا س هر قر س. ظه ر ؾر گ کر اضتع فلسؾپاض ا ض ثل س اؾت. اپ ست کلط رت کلؿر ت ه نتط ي کا ا ثرا ؿرت س. ض ثل رس ا گرا ت ع ض کاهل ت کلؿ ت اکؿر س ن ري کلط رت تدع ر قس ا رس. فلسؾرپاض ا رع تر کلؿر ت تثرس ل قرس ا رس )قکل ا -4 A.)B ر بل د گرا دی ریت پ رفیری: تافررت نى پرررر ضف ط تررررا گل هطپرررر ضف ط تررررا ظه رررر زا هت ؾ ظ تا زا ر زضقرت اؾرت. کرا را زضتطزاض رس حرسز 25 ترا 30 زضصرس حدور کر اضتع 40 ترا 44 زضصررس حدورر پالغ رر کالظ )ال گرر کالظ - ن ررسظ ي( 15 ترا 20 زضصرس حدور نلکرال فلسؾرپاض )اضتر کالظ( 4 تررا 6 زضصررس حدورر ض ثل ررس ؿررت س. کررا ت ط )کسض( نى هگ ت ت اؾرت کر تر صر ضت قرکلزاض ترا ور قرکلزاض تؼضر زض اتؼراز /0 3 ه لر هترط زض حرس 1 زضصرس هكرا س هر قر س. ظ رطکي نپات ت ر کرا را فطػر ؾر گ ؿرت س. ض ثل رس ا گرا ترر عرر ض کاهررل ترر کلؿرر ت اپ ررست کلط ررت فلسؾپاض ا گرا تر کلؿر ت تثرس ل قرس ا رس )قرکل.)C -4 گرا دی ریت: تافررررت نى پ ررررس ه ضف گطا رر الض اؾررت. کررا ررا نى کرر اضتع )30 تررا 35 زضصرررس حدوررر ( اضتررر کالظ )15 ترررا 20 زضصرررس حدورر ( پالغ رر کالظ )40 تررا 45 زضصررس حدورر ع ال گر کالظ - ن رسظ ي( ؿرت س. کرا ت رط )کرسض( حرس 1 ترا 2 زضصرس حدور کرا نى هگ ت رت زض فطػرر نى ظ ررطکي اؾررت. هقرراز ط خع رر اپ ررست کلؿ ت ه نترط ي کرا را ثرا هح ر ل تدع ر پالغ رر کالظ ؿررت س. زض هدورر ع ا رري احررس تؿرر اض کرنترط اظ ض ثل رس گطا ز ض رت پر ضف ط زگطؾراى قس اؾت )قکل 4- D(.

6 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض قرکل 4- ت را ط اظ هقراعغ ه کطؾرک پ احرس ا نشض ري ه غقر قروال قر ط ف رطظ )قروالقرطق ا رطاى(. زض ر ض A( XPL احرس زاؾ ت تا تافت پر ضف ط ظه ر زا ر ض رع ض ثل رس اظ حاقر ؾر ذت اظ هطکرع تر کلؿر ت تثرس ل قرس اؾرت B( احرس زاؾر ت ترا تافررت پرر ضف ط ظه رر خط ررا C( احررس ض ثل ررس گطا ز ض ررت پرر ضف ط تررا زضقررتتلرر ض پالغ رر کالظ ض ثل ررس D( احررس.)2010( گطا ز ض ت تا تافت پ س ه ضف گطا الض ) ام اذت اض کا ا تطگطفت اظ Evans Whitney /69 91 زضصررس ظ رر هتغ ررط اؾررت )خررسل ررا 2(. 1 تطؾررر ن و ررر رررا وررر ش زض وررر زاض اهگررررررصاض وکرررررراضاى )1985( Middlemost كررراى هررر ز رررس کررر و ررر رررا زض هحرررسز گطا ز ض رررت قرررطاض هررر گ ط رررس )قرررکل 5- A(. رررنچ ررر ي و ررر رررا احرررس نتكوكرررا زض ورررر زاض )LeMaitre et al., 2002( TAS زض هحسز زاؾ ت قطاض ه گ ط س )قکل 5- B(. شئ ؼیوی احد ای آذریي تررررا ح تدع رررر ػ اصررررط اصررررل فطػرررر ذرر اک رر ازض ترر ز رر ا ورر ش ؾرر گ رر ا نتكوكررا قرروال قرر ط ف ررطظ زض خررسل ررا 2 1 اضائ قس اؾت. اکعید ای اصلی : هقررساض SiO 2 ترر ز ررا وررر ش ه غقررر هررر ضز هغالؼررر اظ /64 43 ترررا /69 03 ؾررر گ ررر ا نتكوكررر ا اظ /64 57 ترررا

7 163 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( خسل 1- تا ح غئ ق و ا ػ اصط اصل فطػ ذاک ازض ت ز ا و ش ض ثل س گطا ز ض ت پ ضف ط گطا ز ض ت قوال ق ط ف رطظ )قوالقطق ا طاى( تا ض.)ppm تطا ػ اصط فطػ ذاک ازض )تط حؿة ICP-MS )wt.% تطا اکؿ س ا اصل )تط حؿة XRF Sample No. KH-44 KH-16 KH-25 KH-37 KH-17 KH-40 KH-21 KH-22 KH-1 KH-4 Location 58 36'13" 36 24'32" 58 35'51" 36 24'24" 58 36'50" 36 24'21" 58 36'37" 36 24'22" 58 35'53" 36 24'26" 58 36'21" 36 24'31" 58 35'56" 36 24'28" 58 35'55" 36 24'31" 58 35'37" 36 24'20" 58 35'38" 36 24'21" SiO TiO Al 2 O FeOt MnO MgO CaO Na 2 O K 2 O P 2 O L.O.I Sum Ba Co Cs Ga Hf Nb Rb Sr Ta Th Zr Y La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu K 2 O/Na 2 O Sr/Y A/NK A/CNK MALI* (La/Yb) N (Ce/Yb) N Eu/Eu* *MALI= Modified Alkali Lime Index (Na 2 O+K 2 O-CaO)

8 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض خسل 2- تا ح غئ قر و ا ػ اصرط اصرل فطػر ذراک رازض احرس زاؾر ت قروال قر ط ف رطظ )قروالقرطق ا رطاى( ترا ض XRF تطا اکؿ س ا اصل )تط حؿة )wt.%.)ppm تطا ػ اصط فطػ ذاک ازض )تط حؿة ICP-MS Sample No. KH-80 D1 D2 V5 KH-79 KH-77 KH-73 KH-84 KH-91 V4 Location 58 37'22" 36 24'17" 58 36'18" 36 26'02" 58 35'56" 36 26'07" 58 37'34" 36 25'12" 58 37'24" 36 24'18" 58 37'20" 36 24'23" 58 37'12" 36 24'23" 58 37'14" 36 24'15" 58 37'31" 36 24'13" 58 36'35" 36 25'57" SiO TiO Al 2 O FeOt MnO MgO CaO Na 2 O K 2 O P 2 O L.O.I Sum Ba Co Cs Ga Hf Nb Rb Sr Ta Th Zr Y La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu K 2 O/Na 2 O Sr/Y A/NK A/CNK MALI* (La/Yb) N (Ce/Yb) N Eu/Eu* *MALI= Modified Alkali Lime Index (Na 2 O+K 2 O-CaO)

9 ) 165 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( 1/03 تطا ؾر گ را نتكوكرا تر ي 0/8 ترا 1/1 اؾت( )قکل 6- B(. نچ ي تط اؾاؼ هقرساض Fe 2 O 3 /Fe 2 O 3 +MgO SiO 2 زض و زاض )2008( Frost Frost و و ا اظ ع ه ع ور ؿرت س )قرکل 6- C(. زض ور زاض ز گرط SiO 2 )MALI Na 2 O+K 2 O-CaO 2008( Frost, )Frost and و و ا نتكوكرا هقررساض K 2 O احررس ا ض ثل ررس گطا ز ض ررت پر ضف ط گطا ز ض رت اظ 0/8 ترا 2 زضصرس ظ ر هقررساض ؿررثت K 2 O/Na 2 O ن ررا اظ 0/18 تررا 0/41 هتغ ررط اؾررت زضحررال کرر زضصررس K 2 O زض احررس زاؾرر ت ترر ي 1/6 ترررا 2 زضصررس ظ رر ؿررثت K 2 O/Na 2 O ترر ي 0/45 تررا 0/62 زضصررس ظ رر اؾررت )خرسل را 2(. 1 ترط اؾراؼ و زاض را K 2 O زض تطاتررررط )Peccerillo and Taylor, 1976( SiO 2 ت فتط و را ؿت س )قکل 6- A(. اظ ر ع کالرکنلکرالي پتاؾر ن هت ؾ رظ تط هث ا و زاض ؿثت هر ل Al 2 O 3 /Na 2 O+K 2 O زض تطاتط Al 2 O 3 /CaO+Na 2 O+K 2 O را A/NK زض تطاترط )Shand, 1947( A/CNK و ررر رررا وررر ش نتكوكا ت فتط هترانل ه ؼ کرنترط پطنل ه ر ؼ ؿت س A/CNK( تطا ؾ گ ا ور ش تر ي 0/7 ترا )ا رررس ؽ زض تطاترررط و ش ه غق ه ضز هغالؼر زض هحرسز کلؿر ک قرطاض ه گ ط س )قکل 6- D(. قطاضگررطفتي و رر ررا ورر ش نتكوكررا زض و زاض ررا Na 2 O زض تطاتررط A/CNK K 2 O زض تطاتررط CaO SiO 2 گطا ت س ا زض تطاترررررررط Fe 2 O 3 S I کررررررر هرررررررطظ ضا خسا هر ک رس كراى هر ز رس ک و احس ا نشض ري ه غقر قر ط ف رطظ اظ ر ع گطا ت س ا I ؿت س )قکل ا 7- A تا C(. (B قکل 5- A( ه قؼ ت ت ز ا و ش قوال قر ط ف رطظ )قروالقرطق ا رطاى( زض ور زاض اهگرصاض Middlemost وکراضاى )1985 ه قؼ ت و ا نتكوكا قوال ق ط ف طظ زض و زاض.)LeMaitre et al., )2002 TAS

10 ( ) پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض قکل 6- ه قؼ ت تطک ث ت ز ا و ش نتكوكا قوال ق ط ف طظ )قوالقطق ا طاى( زض: A( ور زاض K 2 O زض تطاترط Peccerillo ( SiO 2 Taylor, 1976 and ( )B و زاض, Shand ( 1947( A/NK A/CNK )C ور زاض Fe 2 O 3 /Fe 2 O 3 +MgO زض تطاترط Frost ( and Frost, 2008( SiO 2 D( و زاض Na 2 O+K 2 O-CaO زض تطاتط.)Frost and Frost, )2008 SiO 2 هطتغ قطهع و ا و ش هثل پ نت و ا نتكوكا اؾت. قکل 7- ه قؼ ت و ا و ش نتكوكا قوال ق ط ف طظ )قوالقطق ا رطاى( زض: A( ور زاض Na 2 O زض تطاترط K 2 O هرطظ خساک رس گطا ت س ا ع S I زض O=3% Na 2 اظ )B 2001( Chappell and White ور زاض A/CNK زض تطاترط Chappell and White, 1974( SiO 2 C( و زاض CaO زض تطاتط.)Chappell and White, )2001 Fe 2 O 3 هطتغ قطهع و ا و ش هثل پ نت و ا نتكوكا اؾت.

11 ي ي ط ک ر 167 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( ع اصر فرعی خاکی ادر: ػ اصط ل ت ف ل ترا قرؼاع تعضگ )LILE( ػ اصط اؾاظگاض هتحط ک ؿت س زض حال تطذرر ک ػ اصط اؾغ تا قس ت ه ساى تراال )HFSE( اظ ػ اصررط هتحرر ل زض قررطا ظ زگطگرر زگطؾا ػ اصط ؾراظگاض تقط ثرا راهتحط ک ؿرت س. غلظت ػ اصط ل ت ف ل تا قؼاع تعضگ تاتؼ اظ فراظ قاض اؾت زض حال ک غلظت ػ اصط اؾغ تا قرس ت ه ساى تاال تاتؼ اظ ق و ؾ گ ذاؾتگا فطا رس ا شب - تثل ض اؾت )1993.)Rollinson, و زاض ػ کث ت ػ اصط فطػ تطذ ػ اصط ذراک رازض طهرال ع قرس ؿثت ت گ قت ال ترطا تر ز را گطا ز ر ض ت احس نتكوكا زاؾ ت زض قکل ا 8- A زاز قس اؾت. غ قسگ زض ػ اصرط B Ba Rb K( LILE ػ اصط اؾاظگاض ک ضفتاض قرث ن را زاض رس هثرل ؿرثت تر ػ اصرط HFSE كراى )Cs Th )Y Zr Nb Ti( زض ور و ا ؿثت ت گ قت ال ز س ه ق ز )قکل را 8- A B(. غ ر قرسگ زض ػ اصرط LILE ؿرثت تر HFSE اؾررت ( كاىز س هصاب هرطتثظ ترا ه راعق فرطضا ف Wilson, 2007; Seghedi et al., 2001; Gill, 1981.)Rollinson, 1993; Pearce, 1983; ػ اصط LILE قاتل رت ا حرالل تر فترط اظ ػ اصرط HFSE زض ؾ االت زاض س Machado et al., 2005; Yang and Li, ( )2008 ت راتطا ي زض ه راعق فرطضا ف ؾر االت نظازقرس اظ تررف تراال ل ت ؾروط فطض رس کر اظ Nb فق رط اظ LILE غ رر ؿررت س ترر گرر گ قررت ا افررعز هر قر س )1997 al.,.)borg et احتورال ا ري کر ػ اصررط HFSE زض هطحلرر ررا ها ررس ضت ررل ررا ا لو ت اضز ق س تؿ اض ظ راز اؾرت کر ا ري هغلرة ترر خرر ز ضقرر فطضا ررس قررس اقرراض هرر ک ررس Ti هقراز ط پرا.(Ryerson and Watson, 1987( Nb هر ت ا ر س ت در خر ز اکؿر س ا ر ا Fe-Ti کررا ررا ( Nb-Tiزاض ترراق ها ررس هاگوررا )ها ررس ضت ررل ا لو ررت( زض هررازض زض هحررل هرررعى تاقررس Martin, 1999; Reagan and Gill, 1989; Parkinson, 1993.)Pearce and رنچ ر ي هقراز Nb ه ت ا س كراىز رس ت ر قرسگ ضذرساز قثلر زض ؾر گ را هررعى گ قرت تاقرس Walker et al., (.)2001; Gust et al., 1997 ا دراض ه ور فؿروط زض و را هر ت ا رس زض ت در خرساقرسى نپات رت اظ هاگوا تاقس ػ اصط.)Wu et al., 2003( REE ؿثت ت ؾا ط ػ اصط ت هقساض کنترط زض هؼطض اظزگ زگطؾا ا رسضتطهال قرطاض هر گ ط رس ت راتطا ي الگر فطاا ر ن را هر ت ا رس كا ا اظ ذاؾتگا نشض ري ؾر گ را ضا اثثرات ک رس.)Rollinson, 1993; Boynton, 1985( ذاک ازض )REE( زض ور زاض ػ اصرط و ا گطا ز ر ض ت احرس زاؾ ت ک ؿثت ت ک سض ت طهال ع قس اؾرت غ قسگ ؿثتا قس س زض ػ اصرط ذراک رازض ؾرثک )LREE( ؿثت ت ػ اصط ذاک ازض ؾر گ ي )HREE( كاى ه ز س ک هقساض غ قسگ زض احس نتكوكرا ت ع ض کاهال اضح ت فتط اؾرت )قرکل را 8- C D(. غ قسگ ت فتط ػ اصط LREE زض احس زاؾر ت تا تاالتطت زى ؿثت )ت ي 10/ 41 ترا )13/ 93 (La/Yb) N )Ce/Yb) N )ترر ي /6 57 تررا /9( 13 زض هقا ؿرر تررا احس ا گطا ز ض ت )ت تطت ة ت ي /3 37 ترا /9 14 2/ 41 تا )6/ 48 ع تأ س ه قر ز )خرسل را.)2 1 ا ري ض رس غ ر قرسگ زض LREE ( ؿرثت تر HREE قاذص هصاب ا تكک لقس زض پ فرطضا ف اؾرت Asiabanha et al., 2012; Helvacı et al., 2009;.)Zulkarnain, 2009; Nicholson et al., 2004 الگر ػ اصرط REE پرا (La/Yb) N تر زى ؿرث ؿرثت )37 /3 تا /13( 93 زض و و ا کرنتر زى هقساض گاض ت ضا زض اح ذاؾتگا اثثات ه ک س. ت ظرط وکاضاى )2008( هحت ا LREE )ها س )La Peters

12 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض زض هصاب ت شبترك گاض ت را اؾرپ ل پط رست ت ؿثت (La/Yb) N ت زضخات هتغ رط شب تؿرتگ زاضز. هصاب ا ضذؿاض گاض ت ؿثت ت هصاب را ضذؿراض اؾررپ ل ؿررثت ررا ترراالتط اظ (La/Yb) N ه ک س. ضا ا درراز ؿثت )Ce/Yb) N ع ه ت ا س كراىز رس ػورق طخ شب ؾ گ هازض تاقس. هقساض کن ا ي ؿثت گ را ا ي اؾت ک هاگوا اظ قؿوت ا تاال گ قرت )ػورق کرن( را رطخ شب ظ راز ض كر گطفتر اؾرت. زض تطاترط هاگوا ا تا ؿرثت تراال )Ce/Yb) N هاگورا اظ ػورق ظ از )گؿتط پا ساض گاض ت( طخ شب کن )فكاض ظ از( ض ك گطفت اؾت خسل ا 2 1 هقساض 1995) al.,.)cotton et ترا ت خ ر تر )Ce/Yb) N و ا ور ش نتكوكا کنتط اظ /9 13 اؾرت. هقرساض ؿرثت Eu/Eu* ع زض ت ز ا و ش ه غق ت ي 0/87 ترا 1/08 زض احررس زاؾرر ت ترر ي 0/92 تررا 1/12 هتغ ررط اؾررت )خسل را 2(. 1 زض هدور ع ا دراض هثثت اؾت. اغلرة Eu قکل 8- و زاض طهال ع قس تطذ ػ اصط فطػ ذاک ازض ؿثت ت تطک ة گ قت ال تطا ت ز ا ور ش (A( احرس نتكوكرا )B( قوال ق ط ف طظ )قوالقطق ا طاى( )هقاز ط تطک ة ک سض ت تطا ت ز ا و ش )C( احس نتكوكا )D( ق ط ف طظ تطک ة گ قت ال اظ )1989(. McDonough Sun طهال ع کطزى ػ اصط ازضذراک ؿرثت تر )هقاز ط تطک ة ک سض ت اظ )1985((. Boynton بحث جایگا تکت یکی: تط اؾاؼ هقساض ػ اصرط Yb Nb Ta Y Rb زض وررر زاض رررا وکررراضاى Pearce )1984( ه قؼ ررت تکترر ک تكررک ل ترر ز ررا گطا ز ض ت احس نتكوكرا زاؾر ت کوطت رس ا نتكوكا پ فطضا ف (VAG) B(. رنچ ر ي و زاض را اؾت )قکل ا 9-A Th/Yb زض تطاترط Ta/Yb Helvacı et al., 2009; Siddiqui et al., 2007;( )Pearce, 1983 ع ه قؼ ت تکت ک احس ا و ش نتكوكا ق ط ف طظ ضا ت ص ضت حاق فؼ رال قراض

13 ي ط ط ي ي ر 169 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( كاى ه ز س )قکل ا 10- A B(. زض ا ي و زاض ا ػ اصط کو با Th Ta Yb ؿثت ت ؾ د س ه قر ز تا تغ طات ق و ا اح ذاؾرتگا کر غ ر قرسگ نال ف پ ؾت ا توط ق تلر ض اؾرت تغ طات ؿثت ذاؾتگا اؾت. Th/Yb Ta/Yb غ ط ک اذت زض ذاؾتگا هقاز هكرر ص قر ز. ت راىک رس تغ رطات Th Ta ضا ت ع ض کؿاى زض تأث ط قطاض زاز اؾت تطک ة گ قرت ؿرثت ت گ قت ال زض ضاؾتا رک قر ة احرس تر ؾروت ؿثت ا تاالتط ا پا ه ق ز ترط Th/Yb Ta/Yb خاتر خرا Ta/Yb ؿثت را.)Aldanmaz et al., 2000( Th/Yb و و را ور ش نتكوكرا ه غقر پا ه ضز هغالؼر اظ هحرسز گ قرت ا تر ؾروت هقراز ت فتط خات خا قس اؾت )قکل ا 10- A B(. ا تغ ط تطک ث ت فطا س ا اتؿت ت فرطضا ف ؿرثت زاز هر قر ز )2009 al.,.)helvacı et قر اض ر ا هتاؾ هات ک هوکي اؾرت ؾر ال نترساض را هرصاب را تركر الر حاصرل اظ ضؾر تات را پ ؾرت تراظالت فطضا س قس ت گ گ قت ا ضا قاهل ق ز ک ه خرة ه ق ز ت اتطا ي نضزى ؾال سؼ گ قت شبترك ت ل س هاگوا.)Harangi et al., 2007; Hoang et al., 2011( ؾ گ را ور ش نتكوكرا قر ط ف رطظ احتواال اظ شبترك پ ؾت اق ا ؾ فطض رس گر گ قت ا ض نى تكک ل قس ا س. قکل 9- ه قؼ ت ت ز ا و ش احس نتكوكا ه غق قوال ق ط ف طظ )قوالقطق ا طاى( زض و زاض ا Pearce وکراضاى )1984(. syn- گطا ت ر س ا پكرت ه ر اى اق ا ؾر ;ORG گطا ت ر س ا زضى صروح ا ;WPG س ا قرر ؼ نتكوكررا ;گطا ت ر VAG COLG ;گطا ت س ا وعهاى تا ت ازم قاض ا هطتغ قطهع و ا و ش هثل پ نت و ا نتكوكا اؾت. قکل 10- ه قؼ ت ت ز ا و ش احس نتكوكا ه غق قوال ق ط ف طظ )قوالقرطق ا رطاى( زض و زاض را Th/Yb زض تطاترط Ta/Yb 1983( Pearce,.)Helvacı et al., 2009; Siddiqui et al., 2007; هطتغ قطهع و ا و ش هثلپ نت و ا نتكوكا اؾت.

14 قکل) ت ر ت ر ه) ت ر پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض پترش س هقایع با هاگوا ای آداکی تی : ػگر غئ ق و ا و ا و ش احس نتكوكا قروال ق ط ف طظ تا هاگوا ا نزاک ت زض خرسل 3 هقا ؿر قس اؾت. هقساض ؿثت Sr/Y و ا و ش احرس نتكوكا ت تطت رة تر ي 38/ 48 ترا 40/ 6 93/ 72 ترا /59 16 اؾت. رنچ ر ي ه رعاى Y رع زض و ر را و ش کنتط اظ /9 4 زض احس زاؾ ت کنترط اظ /13 4 گطم زض تي اؾت )خسل ا 2(. 1 ه قؼ ت و ر را زض و زاض Sr/ Y زض تطاتط Y ت راىک رس ا ري اؾرت کر هاگوا ا ي ت ز ا و ش احس نتكوكا ها هاگوا ا نزاک ت ضا زاضز )قکل 11- A(. ز اگطام (La/Yb) N زض تطاترط ع كاى ه ز س ک ت ػلت هقساض )Martin, 1995( Yb N (La/Yb) N و ر را ( تا 9/ 14 زض و را ور ش 14/ 11 زض زاؾر ت( ه عاى )ت ي /2 97 تا /5 55 زض و ا ور ش Yb N تر ي /5 02 ترا /6 6 زض زاؾر ت( ا ري احرس ا زض هرطظ هكتطک هاگوا ا کالکنلکالي هؼو ل ترا نزاک تر ترا هح ظ نزاک ت قطاض ه گ ط س )قکل 11- B(. تط اؾراؼ ا ي و زاض ت ز ا و ش احس زاؾ ت قوال ق ط ف طظ ه ت ا س اظ شبترك نهو ث ل ت کر تر ي 10 تا 25 زضصس گاض ت زاقت اؾرت تكرک ل قرس تاقر س. )B -11 ػررال تررط هقررساض ؿررثت Sr/Y ترراال Y Yb N کرن ػگر را ز گرط و ر را رع ها رس هقرساض MgO K 2 O Al 2 O 3 SiO 2 Eu ه ورر ثررررر زى ا دررررراض غ رر قرر سگ قرر س س ػ اصرر ط LREE ؿثت تر HREE قرثا ت ظ راز تر نزاک را زاضز )خرسل 3(. رنچ ر ي زض هقا ؿر ترا نزاک رت را پطؾر ل ؽ کرنؾر ل ؽ اظ ر ع هاگوا را نزاک تر پطؾر ل ؽ ؿرت س )خرسل 4(. هرصاب را نزاک تر هؼور ال اظ شبتركر ؾر گ را گاض رتزاض حاصرل هر قر س 2006( al., )Macpherson et ا ري کرا هطحل تاق ها س حاضرط زض فكراض تر فترط را هؿرا ررک گ گاپاؾررکال حررطاضت 850 تررا 1150 زضخرر ؾر ا ت گطاز اؾر ت ( Prouteau et al., 2001; Rapp Watson, 1995.)and هاگوا را نزاک تر اغلرة زض پ رر ررا فررطضا ف ترر ررػ خررا کرر قغؼرر فطضا س قس خر اى تاقرس )پ ر را فرطضا ف خر اى ررا فررطضا ف پ ؾررت اق ا ؾرر خرر اى( تكررک ل هررر قررر س ( Martin, 1999; Defant and )Drummond, 1990 رط چ رس کر تكرک ل ن را زض ت د شبترك پ ؾرت ظ رط ي تراظالت ضرر نقرس )Xu et al., 2002( شب پ ؾرت ظ رط ي ضرنقرس زض گ قررت ل ت ؾرروط 2004( al., )Gao et شب ه از تاظالت زض فكاض هؼرازل ترا ضرر نقرسگ پ ؾرت )ترر ف اظ 40 ک لرر هتط( ت رراى قررس اؾررت. ؿررثت 1999( al., )Rapp et ررع وکرراضاى )1983( Baumann 87 Sr/ 86 Sr الرر ضا زض ترررف ررا هرتلررا ؾر گ را نشض ري کالرکنلکرالي تطؾر ط زض کوراى هاگوررا ق چرراى - ؾررثعاض تحل ررل هقررساض نى ضا تر ي 0/ 7035 ترا 0/ 7060 حرساکثط تر ي 0/ / 7052 ررا گ ي /0( 7046 تؼ رر ي کطز ررس. ن ررا ت ررراى کطز رررس کررر ز سضاؾررر ى رررک پ ؾرررت اق ا ؾر ترا شبتركر گر گ قرت ا تراال ک ر پ ررر فرررطضا ف ترررسى زذالرررت پ ؾرررت قررراض ا ؾرر ال ک ا رري هاگوات ؿررن ضا تكررک ل زاز اؾررت. رنچ ر ي ن را هؼتقرس ت ز رس کر ت ر ع زض تطک رة ا عتررر ج اؾتطا ؿررر ن هوکررري اؾرررت زض ت دررر ا وگ گ قت زضخر هتورات تثلر ضتركر تاقرس کر قرف ه ور زض تكرک ل هاگورا کالرکنلکرالي زاضز.زض هدو ع ػگر را غئ قر و ا ؾر گ را نتكوكررا ورر ش اؾرر س قرروال قرر ط ف ررطظ كاى ه ز س ک ا ري فؼال هاگورا کالرکنلکرالي تط اثط شب ضقر اق ا ؾر فطضا رس قرس خر اى زاؽ تررر تت ؽ ؾرررثعاض گررر گ قرررت ا ض نى زض حاق قاض ت ضاى تكک ل قس اؾت.

15 ی ا ی ا ی ا ی ا 171 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( A B قکل 11- A( ت ز ا و ش احس نتكوكا ه غق قوال ق ط ف طظ )قوالقرطق ا رطاى( زض ور زاض Sr/Y زض تطاترط Y زض هحرسز تطک ث نزاک ت قطاض ه گ ط س )1990 Drummond, Defant ( and B( تر ز را ور ش احرس نتكوكرا ه غقر قر ط ف رطظ زض ور زاض )Martin, )1995 Yb N (La/Yb) N زض هح ظ نزاک ت قطاض ه گ ط س. هطتغ قطهع و ا و ش هثل پ نت و ا نتكوكرا اؾرت.هطتغ قطهع و ا و ش هثل پ نت و ا نتكوكا اؾت. خسل 3- هقا ؿ ه ا گ ي ػگ ا غئ ق و ا ت ز ا و ش احس نتكوكا قوال ق ط ف رطظ )قروالقرطق ا رطاى( ترا هاگوا را نزاک تر ( Castillo, Castillo, 2006; Martin et al., 2005; Rollinson and Tarney, 2005; Martin, 1999; Defant and Drummond, 1990.)2012; Moyen, 2009 هیا گیي آداکیت ا هیا گیي ت د ف ذی هیا گیي احد داظیتی 67.22% 14.17% 1.37% 3.42% Low HREE Mostly positive anomaly of Eu (La/Yb) N >10.41 Yb 1.38 ppm Y 12.5 ppm % 15.1% 2.28% 4.37% Low HREE Mostly positive anomaly of Eu (La/Yb) N >3.37 Yb 1.16 ppm Y 9.4 ppm - SiO 2 56% Al 2 O 3 15% MgO < 3% 3.5% Na 2 O 7.5% K 2 O/Na 2 O~0.42 Sr > 400 ppm Low HREE Positive anomaly of Eu (La/Yb) N >10 Yb 1.8 ppm Y 18 ppm ( 87 Sr/ 86 Sr)i < خسل 4- هقا ؿ ه ا گ ي ػگ ا غئ ق و ا ت ز ا و ش احس نتكوكا قوال ق ط ف رطظ )قروالقرطق ا رطاى( ترا هاگوا را نزاک ت پطؾ ل ؽ کنؾ ل ؽ 2005( al.,.)martin et هیا گیي آداکیت پرظیلیط هیا گیي آداکیت کنظیلیط هیا گیي ت د ف ذی هیا گیي احد داظیتی 67.22% 65.97% SiO 2 < 60% SiO 2 > 60% MgO = % MgO = % MgO = 4-9% MgO = 0.5-4% CaO + Na 2 O < 9.19% CaO + Na 2 O < 11.13% CaO + Na 2 O > 10% CaO + Na 2 O < 11% Sr < 579 ppm Sr < 499 ppm Sr > 1000 ppm Sr < 1100 ppm TiO 2 < 0.34% TiO 2 < 0.28% TiO 2 > 3% TiO 2 < 0.9%

16 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض Yb هقساض Y )کنتط اظ 13 گطم زض تي( تیج گیری ؾ گ ا نتكوكا زاؾ ت تر ز را ور ش گطا ز ض ت قوال ق ط ف طظ تا ؾي ال گ ؾي اظ ر ع هترانل ه ؼ پتاؾر ن هت ؾ رظ تر گطا ت رس ا ؾط هگ ت ت )اکؿ ساى( هتؼل ق ؿت س. غ ر قرسگ ػ اصرط LREE ؿرثت تر HREE ػ اصط LILE ؿثت ت HFSE ع هقرساض ػ اصرط Nb Y Rb Th Yb كاى ه ز س ک ه قؼ رت تکتر ک تكک ل هصاب ن ا پ ر فرطضا ف اؾرت. هرصاب احرس نتكوكا تر ز را ور ش اؾر س اظ شبتركر نهو ث ل ت گاض تزاض )تر ي 10 ترا 25 زضصرس( تكرک ل ؿرثتا ػوستا قس اؾت. هقاز ط اکؿ س ا اصل غ قرسگ قس س ػ اصط LREE ؿثت ت HREE ا داض Sr هثثت Eu هقساض تاال )ت ف اظ 499 گرطم زض تري( )کرنترط اظ 1/4 گطم زض تي( کن كاى ه ز س ک هاگوا ا ري تر ز را ها ت هاگوا ا نزاک تر تر رػ ر ع پرطؾر ل ؽ ضا زاض س. ؾ گ ا و ش نتكوكا قوال ق ط ف رطظ احتواال اظ شبترك ضق اق ا ؾ فطضا س قس خ اى زاؽ ت تت ؽ ؾثعاض گ گ قت ا ض نى تكک ل قس اؾت. ظپاضگساری ا ي پطغ تا حوا ت هال زا كگا فطزؾ هكر س زض اضتثاط تا عطح پػ ك قرواض / زض تراض د /1392 /9 12 ا دام قس اؾت. اظ قطکت تدع ک رسگاى کا ؿاض ا تل ض ي نهت ؽ قطق تطا ا دام تدع XRF ه ق ز. تكک ط Alavi, M. (1991) Sedimentary and structural characteristics of the Paleo-Tethys remnants in northeastern Iran. Geological Society of American Bulletin 103: Aldanmaz, E., Pearce, J. A., Thirlwall, M. F. and Mitchell, J. G. (2000) Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey. Journal of Volcanology and Geothermal Research 102: Asiabanha, A., Bardintzeff, J. M., Kananian, A. and Rahimi G. (2012) Post-Eocene volcanics of the Abazar district, Qazvin, Iran: Mineralogical and geochemical evidence for a complex magmatic evolution. Journal of Asian Earth Sciences 45: Bauman, A., Spies, O. and Lensch, G. (1983) Strontium isotopic composition of post-ophiolitic tertiary volcanics between Kashmar, Sabzevar and Quchan NE Iran. In: Geodynamic project (geotraverse) in Iran (Ed. Almassi, A.) Geological Survey of Iran, Tehran. Borg, L. E., Clynne, M. A. and Bullen, T. D. (1997) The variable role of slab-derived fluids in the generation of a suite of primitive calc-alkaline lavas from the southernmost Cascade Range. Canadian Mineralogist 35: Boynton, W. V. (1985) Cosmochemistry of the rare earth elements, Meteorite studies. In: Rare earth element geochemistry (Ed. Henderson, P.) Elsevier, Amsterdam. Castillo, R. P. (2006) An overview of adakite petrogenesis. Chinese Science Bulletin 51: Castillo, R. P. (2012) Adakite petrogenesis. Lithos 134: Chappell, B. W. and White, A. J. R. (1974) Two contrasting granite types. Pacific Geology 8: Chappell, B. W. and White, A. J. R. (2001) Two contrasting granite types, 25 years later. Australian Journal of Earth Sciences 48: ه ابع

17 173 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( Cotton, J., Le Dez, A., Bau, M., Caroff, M., Maury, R. C., Dulski, P., Fourcade, S., Bohn, M. and Brousse, R. (1995) Origin of anomalous rare_earth element and yttrium enrichments in subaerially exposed basalts, evidence from French Polynesia. Chemical Geology 119: Defant, M. J. and Drummond, M. S. (1990) Derivation of some modern arc magmas by melting of young subducted lithosphere. Nature 347: Frost, B. R. and Frost, C. D. (2008) A geochemical classification for feldspathic igneous rocks. Journal of Petrology 49: Gao, S., Rudnick, R. L., Yuan, H. L., Liu, X. M., Liu, Y. S., Xu, W. L., Lin, W. L., Ayerss, J., Wang, X. C. and Wang, Q. H. (2004) Recycling lower continental crust in the North China craton. Nature 432: Ghaemi, F., Ghaemi, F. and Hosseini, K. (1998) Explanatory text of Neyshabour. Geological Quadrangle Map 1:100,000, No.7762, Geological Survey of Iran, Tehran. Ghasemi, H., Sadeghian, M., Khanalizadeh, A. and Tanha, A. (2010) Petrology, geochemistry and radiometric ages of high silica adakitic domes of Neogene continental arc, south of Quchan. Journal of Crystallography and Mineralogy 18: (In Persian). Gill, J. B. (1981) Orogenic andesites and plate tectonics. Springer, New York. Gust, D. A., Arculus, R. A. and Kersting, A. B. (1997) Aspects of magma sources and processes in the Honshu arc. The Canadian Mineralogist 35: Harangi, S., Downes, H., Thirlwall, M. and Gmeling, K. (2007) Geochemistry, petrogenesis and geodynamic relationships of Miocene Calc-alkaline volcanic rocks in the Western Carpathian Arc, Eastern Central Europe. Journal of Petrology 48 (12): Helvacı, C., Ersoy, E. Y., Sözbilir, H., Erkül, F., Sümer, Ö. and Uzel B. (2009) Geochemistry and 40 Ar/ 39 Ar geochronology of Miocene volcanic rocks from the Karaburun Peninsula: Implications for amphibolebearing lithospheric mantle source, Western Anatolia. Journal of Volcanology and Geothermal Research 185: Hoang, N., Itoh, J. and Miyagi, I. (2011) Subduction components in Pleistocene to recent Kurile arc magmas in NE Hokkaido, Japan. Journal of Volcanology and Geothermal Research 200: Jamshidi, K., Ghasemi, H. and Sadeghian, M. (2014) Petrology and geochemistry of the Sabzevar postophiolitic high silica adakitic rocks. Petrology 5(17): (in Persian). LeMaitre, R. W., Streckeisen, A., Zanettin, B., Le Bas, M. J., Bonin, B., Bateman, P., Bellieni, G., Dudek, A., Efremova, S., Keller, J., Lamere, J., Sabine, P. A., Schmid, R., Sorensen, H. and Woolley, A. R. (2002) Igneous rocks: a classification and glossary of terms. Cambridge University Press, Cambridge. Machado, A. T., Chemale, Jr. F., Conceicao, R. V., Kawaskita, K., Morata, D., Oteıza, O. and Schmus, W. R. V. (2005) Modeling of subduction components in the Genesisof the Meso-Cenozoic igneous rocks from the South Shetland Arc, Antarctica. Lithos 82: Macpherson, C. G., Dreher, S. T. and Thirlwall, M. F. (2006) Adakites without slab melting: high pressure differentiation of island arc magma, Mindanao, the Philippines. Earth and Planetary Science Letters 243: Martin, H. (1995) The Achaean grey gneisses and the genesis of the continental crust. In: The achaean crustal evolution (Ed. Condie, K. C.) Elsevier, Amsterdam. Martin, H. (1999) The adakitic magmas: modern analogues of Achaean granitoids. Lithos 46(3): Martin, H., Smithies, R. H., Rapp, R., Moyen, J. F. and Champion, D. (2005) An overview of adakite, tonalite-trondhjemite-granodiorite (TTTG) and sanukitoid: relationships and some implications for

18 پترررطل غ ؾال وتن قواض ت ؿت پ دن ت اض crustal evolution. Lithos 79:1-24. Middlemost, E. A. K. (1985) Magmas and magmatic rocks. Longman, London. Moyen, J. F. (2009) High Sr/Y and La/Yb ratios: The meaning of the adakitic signature. Lithos 112: Nasrabadi, M. (2011) Genesis of unusual mineral assemblage in the trondhjemites of Soltan Abad area (NE Sabzevar): evidences of crystallization and emplacement conditions of magma. Petrology 2(5): (in Persian). Nasrabadi, M. (2013) Petrogenesis of hornblenditic dykes from southwest Soltan Abad (NE Sabzevar). Petrology 4 (13): (in Persian). Nicholson, K. N., Black, P. M., Hoskin, P. W. O. and Smith, I. E. M. (2004) Silicic volcanism and back-arc extension related to migration of the Late Cainozoic Australian- Pacific plate boundary. Journal of Volcanology and Geothermal Research 131: Pearce, J. A. (1983) Role of the sub-continental lithosphere in magma genesis at active continental margins. In: Continental basalts and mantle xenoliths (Eds. Hawkesworth, C. J. and Norry, M. J.) , Shiva, Nantwich. Pearce, J. A. and Parkinson, I. J. (1993) Trace element models for mantle melting: application to volcanic arc petrogenesis. In: Magmatic Processes in Plate Tectonics (Eds. Prichard, H. M., Albaster, T., Harris, N. B. W. and Neary, C. R.) special publication 76: Geological Society, London. Pearce, J. A., Harris, N. W. and Tindle, A. G. (1984) Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. Journal of Petrology 25: Peccerillo, A. and Taylor, S. R. (1976) Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey. Contributions to Mineralogy and Petrology 58: Peters, T. J., Menzies, M., Thirlwall, M. and Kyle, P. (2008) Zuni-Bandera volcanism, Rio Grande, USA melt formation in garnet- and spinel facies mantle straddling the asthenosphere-lithosphere boundary. Lithos 102 (1-2): Prouteau, G., Scaillet, B., Pichavant, M., Maury, R. (2001) Evidence for mantle metasomatism by hydrous silica melts derived from subducted oceanic crust. Nature 410: Rapp, P. R., Shimizu, N., Norman, M. D. and Applegate, G. S. (1999) Reaction between slab-derived melt and peridotite in the mantle wedge: Experimental constrains at 3.8 GPa. Chemical Geology 160: Rapp, R. P. and Watson, E. B. (1995) Dehydration melting of metabasalt at 8 32 kbar: implications for continental growth and crust mantle recycling. Journal of Petrology 36: Reagan, M. K. and Gill, J. B. (1989) Coexisting calc-alkaline and high niobium basalts from Turrialba volcano, Costa Rica: implication for residual titanites in arc magma source. Journal of Geophysical Research 94: Rollinson, H. (1993) Using geochemical data, evaluation, presentation, interpretation. Longman, London. Rollinson, H. R. and Tarney, J. (2005) Adakites- the key to understanding LILE depletion in granulites. Lithos 79: Ryerson, F. J. and Watson, E. B. (1987) Rutile saturation in magmas: implications for Ti Nb-Ta depletion in island-arc basalts. Earth and Planetary Science Letters 86: Sahandi, M. R., Soheily, M., Sadeghi, M., Delavar, S. T. and Jafari Rad, A. (2002) Geological Quadrangle Map of Iran 1:1,000,000. Geological Survey of Iran, Tehran. Seghedi, I., Downes, H., Pecskay, Z., Thirlwall, M. F., Szakacs, A., Prychodko, M. and Mattey, D. (2001)

19 175 ؾ گق اؾ غئ ق و خا گا تکت ک ؾ گ ا نتكوكا ت ز ا و ش تطؾ ط قوال ق ط ف طظ )قوالقطق ا طاى( Magmagenesis in a subduction-related post-collisional volcanic arc segment: the Ukrainian Carpathians. Lithos 57: Shand, S. J. (1947) Eruptive rocks. Their genesis, composition, classification and their relation to oredeposits. 3 rd edition, Hafner, New York. Siddiqui, R. H., Asif Khan, M. and Qasim-Jan, M. (2007) Geochemistry and petrogenesis of the Miocene alkaline and sub-alkaline volcanic rocks from the Chagai arc, Baluchistan, Pakistan: Implications for porphyry Cu-Mo-Au deposits. Journal of Himalayan Earth Sciences 40: Spies, O., Lensch, G. and Mihem, A. (1983) Chemistry of the post-ophiolitic tertiary volcanic between Sabzevar and Quchan/NE-Iran. In: Geodynamic project (geotraverse) in Iran (Ed. Almassi, A.) Geological Survey of Iran, Tehran. Sun, S. S. and McDonough, W. F. (1989) Chemical and isotopy systematics of oceanic basalts: implications for mantle composition and processes. In: Magmatism in the Ocean: Basins. (Eds. Saunders, A. D. and Norry, M. J.) special publications 42: Geological Society, London. Walker, J. A., Patino, L. C., Carr, M. J. and Feigenson, M. D. (2001) Slab control over HFSE depletions in central Nicaragua. Earth and Planetary Science Letters 192: Whitney, D. L. and Evans, B. W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist 95: Wilson, M. (2007) Igneous Petrogenesis. Springer, Verlag, Berlin. Wu, F. Y., Jahn, B. M., Wilde, S. A., Lo, C. H., Yui, T. F., Lin, Q., Ge, W. C. and Sun, D. Y. (2003) Highly fractionated I-type granites in China (I): geochronology and petrogenesis. Lithos 66: Xu, J. F., Shinjo, R., Defant, M. J., Wang, Q. and Rapp, R. P. (2002) Origin of Mesozoic adakitic intrusive rocks in the Ningzhen area of east China: partial melting of delaminated lower continental crust? Geology 30: Yang, W. and Li, S. (2008) Geochronology and geochemistry of the Mesozoic volcanic rocks in Western Liaoning: Implications for lithospheric thinning of the North China Craton. Lithos 102: Zulkarnain, I. (2009) Geochemical signature of Mesozoic volcanic and granitic rocks in Madina regency area, North Sumatra, Indonesia and its tectonic implication. Journal of Geology Indonesia 4(2):

20 10 Petrology, 7 th Year, No. 25, Spring 2016 Petrology, geochemistry, and tectonic setting of Tertiary volcanic and intrusive rocks in the north of Shahr-e-Firouzeh (northeast of Iran) Azadeh Malekzadeh Shafaroudi *, Mohammad Hassan Karimpour and Arezoo Zarei Research Center for Ore Deposit of Eastern Iran, Ferdowsi University of Mashhad, Mashhad, Iran Abstract The study area is located in 15 km of the north of Shahr-e-Firouzeh in Khorasan Razavi province. The area is situated in the southeast of Quchan-Sabzevar arc magmatic. Lithology of the district includes dacitic lavas, which are intruded by Oligocene porphyritic hornblende granodioritic stock and granodioritic dike as subvolcanic and plutonic rocks. Igneous rocks were overlapped by younger sedimentary rocks. The texture of dacitic unit is porphyric to glomeroporphic with flow groundmass. Quartz, plagioclase, K-feldspar, and hornblende are the main minerals. The texture of hornblende granodiorite porphyry is porphyric to glomeroporphic and plagioclase, K-feldspar, hornblende, and quartz are the common minerals, whereas granodiorite unit is granular and hornblende is not present. Based on geochemical studies, the acidic volcanic and intrusive rocks show metaluminous and medium-k nature. These rocks belong to the I-type granitoid. Enrichment of LREE versus HREE and enrichment of LILE and depletion in HFSE indicate magma formed in subduction zone. The melt originated from partial melting of amphibolite with 10 to 25% garnet. Based on the average amount of major oxides, enrichment of LREE, mostly positive Eu anomaly, high Sr (up to 499 ppm), and low Y (<13 ppm) and Yb (<1.4 ppm) contents, the magma show silica-rich adakitic nature. The intrusive and volcanic rocks of the northern Shahr-e-Firouzeh were generated by partial melting of Sabzevar Neotethyan young and hot subducted oceanic crust and mantle wedge in the continental margin of the Turan plate. Key words: Geochemistry, I-type granitoid, Shahr-e-Firouzeh, Quchan-Sabzevar magmatic arc, Iran * shafaroudi@um.ac.ir Copyright 2016, University of Isfahan. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( which permits others to download this work and share it with others as long as they credit it, but they cannot change it in any way or use it commercially.

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