Physical properties of the Rehoboth Basement inlier
|
|
|
- Duane Douglas
- 5 years ago
- Views:
Transcription
1 Physical properties of the Rehoboth Basement inlier P. Ledru*, T. Becker**, D. Hutchins**, J.P. Milesi*, B. Tourlière*, C. Truffert*, R. Wackerle** *BRGM-French Geological Survey, Orleans, France **Geological Survey Namibia, Windhoek, Namibia
2 Crustal blocks and accretionnary process The definition of crustal accretionnary process during the Precambrian relies mainly on the ability to correlate local lithological composition and structural pattern to significant tectonic events on a crustalscale Radiometric and magnetic high-resolution airborne geophysical surveys constitute a unique source of regional-scale information enabling provisional lithological and structural mapping
3 A geophysical signature for each lithological and structural elements Fold and thrust belt Shear zone Rift zone An idealistic mountain belt, Choukroune, 1995
4 General framework The High-resolution geophysical dataset magnetics radiometrics The aeromagnetic map of Namibia
5 Geological framework OLZ SZ CZ SF Nama Group Pre-Damara basement Tectonostratigraphic zones of the Damara Orogen (Miller, 1983) SMZ The Southern branch of the Damara belt A south marginal zone (SMZ) including tectonised Damaran sequences A Pre-Damara basement composed of Paleoproterozoic and Mesoproterozoic terranes A Neoproterozoic cover sequence and foreland basin (Nama group, SF) The Rehoboth area as a casehistory
6 A Late Paleoproterozoic greenstone belt Terrestrial and marine sediments, volcanic rocks ranging from pyroclastics with calkalkaline affinity to subalkaline tholeitic flows (Elim Formation), intrusive rocks range from ultramafic and anorthositic complexes (Alberta Complex) to tonalite (Weener Igneous complex and Picksteel granodiorite) and granite Interpretation of magnetic and radiometric data provide a new information on: The extension of radioelement-depleted lithologies, such as mafic lavas and amphibolitic enclaves The extent of magnetite-rich metasediments and lavas Potassium-rich alteration zones
7 A Late Paleoproterozoic greenstone 200 km belt
8 Extension of radioelement-depleted lithologies Metabasalt Kobos granite Granite 10 km Radioelement, total count
9 Extent of magnetite-rich metasediments and BIF lavas Kobos granite Carbonate and magnetite vein system BIF 10 km
10 Potassium-rich alteration zones Kobos mine Th/K ratio indicative of K alteration K enriched Kobos granite Open pit at Kobos mine 10 km
11 A new map in the greenstone belt (Kobos area) Magnetite bearing quartzite K enriched areas Magnetite-rich layers Kobos granite Metabasalt 10 km
12 Summary: Lithologies and chronology Late Paleoproterozoic Greenstone belt Piksteel granodioritic intrusions 1640 Basic and ultramafic intrusions (Alberta Complex) Metasedimentary sequence including magnetite-rich quartzite, manganesiferous, marble/calcsilicates and "cherts" horizons 1900? Back-arc setting, Metavolcanic sequence, dominant basaltic lavas (MORB), subordinate felsic volcanism (Elim Fm) Schist and conglomerate (Gaub Valley)
13 A Mesoproterozoic active margin A part of a more than 300 km long belt known as the Sinclair unit The basin fill of this belt comprises continental coarse to fine grained siliciclastic sediments with intercalated silicic to mafic volcanic rocks, Coeval intrusives (1.1-1 Ga) range in composition from sub-alkaline granodiorite and gabbro to dominant fine-grained to porphyritic granites Interpretation of magnetic and radiometric data provide a new information on: A major input of radioelement in the crust The structural pattern
14 Mesoproterozoic granites and volcanosediments 200 km
15 Mesoproterozoic granites, volcanics and sediments: a major K input in the crust Kobos granite Aukukams granite 20 km Radioelement, ternary map over Landsat 741
16 Landsat Ternary Landsat Ternary
17 Landsat Mag 1vd Landsat Mag
18 Summary: Lithologies and chronology 1000? Mesoproterozoic arc>>back-arc system Dolerite dyke network Rhyolite dykes cross-cutting basalt dykes Basalt flow, feeder dykes (back-arc related) (Opdam Fm) "Competition" with clastic sediments (including Fequartzites) Break: migration of arc to back-arc Mesoproterozoic ignimbrite system: a major regional marker horizon in an active margin "Shallow sub-aquatic" ignimbritic volcanic system, related rhyolitic flows and feeder dyke complexes. Laterally passage to volcanoclatic mudstones/sandstones and distal monogenic conglomerates/sandstone (Nuckopf, Langberg, Grauwater, Skumof Fms) Clastic sedimentary basin. Developed in parallel with the ignimbrite system, sandstones and polygenic conglomerates, that could marked both continental influence and strong tectonic instabilities (clastic pole represented by the Billstein Fm) Parental microgranite and K-rich granite intrusion (Gamsberg granitic suite) showing rhyolite enclaves Rhyolite, microgranite and Quartz Porphyry dykes Extensional tectonics in arc-back-arc setting, regional unconformity Ignimbrite
19 The Neoproterozoic foreland of the Damara orogen A basal continental sequence, the Nosib Group (debris flow conglomerates, braided-fan alluvial deltas and lacustrine sedimentation) Unconformably overlain by the Late Neoproterozoic to Cambrian Nama Group marine sequence (shale and sandstone, with at its base limestone and stromatolith reefs) Interpretation of magnetic and radiometric data provide a new information on: The sources of sediments and the radioelement distribution The structural pattern The alteration
20 The Neoproterozoic sediments 200 km
21 Sources of sediments and radioelement distribution 10 km Radioelement, ternary map over Landsat 741
22 Structural pattern Paleoproterozoic basement Neoproterozoic Foreland of the Damara orogen (S margin) Syncline Anticline 10km Ternary map of radioelements
23 Structural pattern Syncline Anticline 10km Analytical signal of the magnetic field
24 Evaluation of alteration processes through radioelement depletion vs enrichment Measured Potassium (airborne HR survey)
25 Calculation of a radioelement mean value for each lithologies Mean Potassium within each lithological unit
26 Calculation of the variation within each lithologies, depletion vs enrichment Variation of potassium content within each lithologies
27 Calculation of the variation of the Uranium content within the Klein Aub formation Klein Aub mine NKlKg
28 Summary: Lithologies and chronology 560 Southern margin Damara sequence Damara Orogen Neoproterozoic terrains of the Khomas- Hakos domain Thrust sole Southern foreland Naukluft nappe Nama Neoproterozoic marine sequence Thrust sole??? Unconformity, sedimentation gap (and erosion?) Neoproterozoic continental sequence (Nosib group) Feldspathic sandstones (Kamtsas Fm, Duruchaus Fm) Argillite, silt and calcareous sandstones and conglomerates (Klein Aub Fm) 850 Conglomerate, sandstone and quartzite (Doornpoort Fm) Regional unconformity
29 Conclusions High-resolution airborne radiometric and magnetic geophysical data from Namibia provide new datasets that can be used for producing interpreted geological maps Physical properties of the main lithotectonic units and the overall structural pattern give new insights on the successive accretionnary processes already envisaged by geologists Alteration processes can be quantified and used to evaluate the existence of hydrothermal systems or weathering processes
2 Britain s oldest rocks: remnants of
Britain s oldest rocks: remnants of Archaean crust 15 2 Britain s oldest rocks: remnants of Archaean crust 2.1 Introduction Owing to the complex nature of extremely old deformed rocks, the standard methods
Evolution of the Earth
Evolution of the Earth http://static.newworldencyclopedia.org/f/fe/geologic_clock.jpg Evolution of the Earth Solar system, 4.6 byr Collapse of a nebula Star forms as gravity concentrates material at center
CEE 437 Lecture 10 Rock Classification. Thomas Doe
CEE 437 Lecture 10 Rock Classification Thomas Doe Igneous Origins Intrusive Batholithic or plutonic: phaneritic Dikes or sills that chill rapidly: aphanitic Extrusive deposition as melt (lava) pyroclastic
NAME HOMEWORK ASSIGNMENT #3 MATERIAL COVERS CHAPTERS 8, 9, 10, 11
NAME HOMEWORK ASSIGNMENT #3 MATERIAL OVERS HAPTERS 8, 9, 10, 11 Assignment is due the beginning of the class period on November 23, 2004. Answers for each chapter will be discussed in class, as Exam #3
Page 1. Name: 1) Which diagram best shows the grain size of some common sedimentary rocks?
Name: 1) Which diagram best shows the grain size of some common sedimentary rocks? 1663-1 - Page 1 5) The flowchart below illustrates the change from melted rock to basalt. 2) Which processes most likely
Practice Test Rocks and Minerals. Name. Page 1
Name Practice Test Rocks and Minerals 1. Which rock would be the best source of the mineral garnet? A) basalt B) limestone C) schist D) slate 2. Which mineral is mined for its iron content? A) hematite
7 Sedimentation and tectonics at a mid- Ordovician to Silurian active margin
80 Mountain Building in Scotland 7 Sedimentation and tectonics at a mid- Ordovician to Silurian active margin 7.1 Introduction In mid-ordovician to Silurian times, the Grampian mountains underwent exhumation,
Geology of Quesnel and Stikine terranes and associated porphyry deposits. Jim Logan Paul Schiarizza
Geology of Quesnel and Stikine terranes and associated porphyry deposits Jim Logan Paul Schiarizza Quesnel and Stikine terranes Major cordilleran terranes characterized by similar Late Triassic Early Jurassic
CHAPTER VI CONCLUSIONS
CHAPTER VI CONCLUSIONS In this Chapter, salient observations made in understanding the various tectonothermal events, including U-Pb in-situ monazite geochronology of Sargur schists and granulites exposed
As compaction and cementation of these sediments eventually occur, which area will become siltstone? A) A B) B C) C D) D
1. A student obtains a cup of quartz sand from a beach. A saltwater solution is poured into the sand and allowed to evaporate. The mineral residue from the saltwater solution cements the sand grains together,
CEE 437 Lecture 11 Rock Classification. Thomas Doe
CEE 437 Lecture 11 Rock Classification Thomas Doe Translation of Mineral Properties to Rock Properties Comparison of mineral properties to rock properties Rocks have lower strength, especially tensile
A rock is a naturally occurring solid mixture of one or more minerals, or organic matter
A rock is a naturally occurring solid mixture of one or more minerals, or organic matter Rocks are classified by how they are formed, their composition, and texture Rocks change over time through the rock
GLY 155 Introduction to Physical Geology, W. Altermann. Press & Siever, compressive forces. Compressive forces cause folding and faulting.
Press & Siever, 1995 compressive forces Compressive forces cause folding and faulting. faults 1 Uplift is followed by erosion, which creates new horizontal surface. lava flows Volcanic eruptions cover
THEME 8: The Mokolian Era. Namaqualand Metamorphic Complex. This is a granite-gneiss complex. Includes folded and metamorphosed volcanosedimentary
THEME 8: The Mokolian Era This runs from 2050 Ma (end of Bushveld Complex) to 1080 Ma (start of Pan African) Includes: Namaqualand metamorphic Complex, Natal metamorphic Complex, sedimenatery sequences
Geoscience 001 Fall Rock Identification and Contextual Interpretation
Geoscience 00 Fall 2005 Rock Identification and Contextual Interpretation The purpose of this week s lab is to gain some more experience and practice in identifying rocks and then interpreting the geologic
From Atoms to Minerals to Rocks: The building blocks of the Earth
From Atoms to Minerals to Rocks: The building blocks of the Earth 1 Questions your students might ask? What are rocks made of? What are minerals? What are minerals? What is the difference between Fool
Earth s Tectonic Evolution
Earth s Tectonic Evolution Name: Spring, 19xx Geology 230: Test # 3 Date: Time Begun: Time Ended: Rules for All Lecture Tests Lynn S. Fichter James Madison University ( You have a several day period in
Quiz 1. 3) Which of the following planetary bodies has the least number of impact craters on its surface? A) Mercury B) Mars C) the Moon D) Earth
Quiz 1 1) Earth's atmosphere is unique among the moons and planets in that A) it has a nitrogen (N2) rich atmosphere. B) it is rich in oxygen (O2) and nitrogen (N2). C) it is rich in carbon dioxide because
Chapter 4 Rocks & Igneous Rocks
Chapter 4 Rocks & Igneous Rocks Rock Definition A naturally occurring consolidated mixture of one or more minerals e.g, marble, granite, sandstone, limestone Rock Definition Must naturally occur in nature,
To get you thinking What natural process is responsible for the appearance of these rocks? Rocks and the Rock Cycle
To get you thinking What natural process is responsible for the appearance of these rocks? Rocks and the Rock Cycle Bell Ringer Name the 3 types of rock. Is one type of rock able to change into a different
Liz LaRosa Images from Geology.com unless otherwise noted
Liz LaRosa http://www.middleschoolscience.com 2010 Images from Geology.com unless otherwise noted A rock is a naturally occurring solid mixture of one or more minerals, or organic matter Rocks are classified
I. Uniformitarianism- James Hutton s 2-part theory states: A. The geologic processes now at work were also active in the past B. The present physical
How Earth s Rocks Were Formed I. Uniformitarianism- James Hutton s 2-part theory states: A. The geologic processes now at work were also active in the past B. The present physical features of Earth were
1. What is the most important agent of chemical weathering on Earth? a. oxygen b. salt c. carbon dioxide d. carbonic acid e. water
Geology 1-2nd Exam Spring 2013 Prof. Phil Stoffer 1. What is the most important agent of chemical weathering on Earth? a. oxygen b. salt c. carbon dioxide d. carbonic acid e. water 2. Igneous rocks are
Questions and Topics
Plate Tectonics and Continental Drift Questions and Topics 1. What are the theories of Plate Tectonics and Continental Drift? 2. What is the evidence that Continents move? 3. What are the forces that
GY 112 Lecture Notes Rock Review
GY 112 Lecture Notes D. Haywick (2006) 1 GY 112 Lecture Notes Rock Review Lecture Goals: A) Recap of rock types B) Recap of the rock cycle C) Sedimentary rocks: their role in earth history Textbook reference:
2 Igneous Rock. How do igneous rocks form? What factors affect the texture of igneous rock? BEFORE YOU READ. Rocks: Mineral Mixtures
CHAPTER 2 2 Igneous Rock SECTION Rocks: Mineral Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do igneous rocks form? What factors affect the texture
3. Radiometry. The Australian Continent: A Geophysical Synthesis Radiometry
16 3. Radiometry A major effort has been made to assemble a continent-scale study combining the results of many different airborne radiometric surveys (Figure 3.1). The radiometric surveys measure the
New insights on the THO-Superior boundary: Tectonic and metallogenic implications
New insights on the THO-Superior boundary: Tectonic and metallogenic implications John Percival, GSC Nicole Rayner, GSC Herman Zwanzig, MGS Linda Murphy, MGS Joe Whalen, GSC Martha Growdon, Indiana U.
Igneous Rock Classification, Processes and Identification Physical Geology GEOL 100
Igneous Rock Classification, Processes and Identification Physical Geology GEOL 100 Ray Rector - Instructor Major Concepts 1) Igneous rocks form directly from the crystallization of a magma or lava 2)
INTRODUCTION. Basalt, the widespread igneous rock on the earth sur-face. today appear to have been equally important
INTRODUCTION Basalt, the widespread igneous rock on the earth sur-face today appear to have been equally important in the geologic past. Basaltic rocks are mostly partial melting products of the upper
CHAPTER 8 SUMMARY AND CONCLUSIONS
CHAPTER 8 SUMMARY AND CONCLUSIONS The Aravalli Mountain Range (AMR) is the main edifice of NW Indian shield. It is about 800 km long and 200 km wide with NE-SW strike. The rocks of AMR are hosted in an
Rocks. 3.1 The Rock Cycle. 3.1 The Rock Cycle. 3.1 The Rock Cycle. The Rock Cycle. I. Rocks
Rocks Tarbuck Lutgens 3.1 The Rock Cycle 3.1 The Rock Cycle I. Rocks Rocks are any solid mass of mineral or mineral-like matter occurring naturally as part of our planet. Types of Rocks 1. Igneous rock
ROCK IDENTIFICATION LAB
ROCK IDENTIFICATION LAB What type of rock is this? Where or how is it formed? Obsidian Extrusive Igneous Rock No crystals formed Glassy Very quick cooling molten rock (lava) What type of rock is this?
Chapter 10. Chapter Rocks and the Rock Cycle. Rocks. Section 1 Rocks and the Rock Cycle
Chapter 10 Rocks 1 Chapter 10 Section 1 Rocks and the Rock Cycle 2 10.1 Rocks and the Rock Cycle Magma is the parent material for all rocks. Once the magma cools and hardens, many changes can occur. Geology:
Prentice Hall EARTH SCIENCE
Prentice Hall EARTH SCIENCE Tarbuck Lutgens Chapter 3 Rocks 3.1 The Rock Cycle Rocks Rocks are any solid mass of mineral or mineral-like matter occurring naturally as part of our planet. Types of Rocks
COMPOSITIONAL TERMS: FELSIC : light colored INTERMEDIATE : medium shades MAFIC : dark colored ULTRAMAFIC : rare (composition of the mantle)
GEOLOGY 306 Laboratory NAME: Instructor: TERRY J. BOROUGHS SECTION: Common Rocks (Chapter 2) For this assignment, you will require: a streak plate, glass plate, magnet, dilute hydrochloric (HCl) acid,
Topics that will be discussed
Topics that will be discussed The Rock Cycle Igneous Rock Sedimentary Rock Metamorphic Rock The Rock Cycle -Rocks The parent material for all rocks is MAGMA. What is MAGMA? -Rock forming Minerals Are:
Geology 12 Exam Review Package
Geology 12 Exam Review Package Exam Date: Supplies: Thursday June 11 th, 1:00pm to 4:00pm Pen, pencil, eraser, calculator (all graphing calculators will have their memories cleared at the start of the
Igneous, Metamorphic & Sedimentary. Chapter 5 & Chapter 6
Igneous, Metamorphic & Sedimentary Chapter 5 & Chapter 6 Section 5.1 What are Igneous Rocks? Compare and contrast intrusive and extrusive igneous rocks. Describe the composition of magma Discuss the factors
Version 1 Page 1 Barnard/George/Ward
The Great Mineral & Rock Test 1. Base your answer to the following question on the table below which provides information about the crystal sizes and the mineral compositions of four igneous rocks, A,
Name Class Date. In your textbook, read about the nature of igneous rocks. Use each of the terms below just once to complete the following statements.
CHAPTER 5 Igneous Rocks SECTION 5.1 What are igneous rocks? In your textbook, read about the nature of igneous rocks. Use each of the terms below just once to complete the following statements. basaltic
Rock Identification. invisible rhyolite andesite basalt komatiite. visible granite diorite gabbro peridotite
Rock Identification The samples in this lab are arranged into four groups: igneous, sedimentary, metamorphic, and unknown. Study the igneous, sedimentary, and metamorphic collections to get an idea of
Rocks Reading this week: Ch. 2 and App. C Reading for next week: Ch. 3
Reading this week: Ch. 2 and App. C Reading for next week: Ch. 3 I. Environmental significance II. Definition III. 3 major classes IV. The Rock Cycle V. Secondary classification VI. Additional sub-classes
Rocks Environmental Significance. Rocks Reading this week: Ch. 2 and App. C Reading for next week: Ch. 3. Rocks Definition of a rock
Reading this week: Ch. 2 and App. C Reading for next week: Ch. 3 Environmental Significance I. Environmental significance II. Definition III. 3 major classes IV. The Rock Cycle V. Secondary classification
Lecture 5 Sedimentary rocks Recap+ continued. and Metamorphic rocks!
Lecture 5 Sedimentary rocks Recap+ continued and Metamorphic rocks! Metamorphism Process that leads to changes in: Mineralogy Texture Sometimes chemical composition Metamorphic rocks are produced from
Archean Terranes. Archean Rocks. Southeastern Africa. West Greenland. Kaapvaal Craton. Ancient Gneiss Complex
Archean Terranes Archean Rocks Chapter 15A >2.5 Gy old Younger supracrustal sequences Greenstone belts Calc-alkaline metavolcanic rocks Older gneiss complexes Quartzo-feldspathic rocks Tonalites and migmatites
Geology of Hong Kong A Summary. Prof LS Chan The University of Hong Kong
Geology of Hong Kong A Summary Prof LS Chan The University of Hong Kong Student Expeditions Geology of HK Eurasia Late Cretaceous Orogen Collapse Eurasia Sunda Early Cenozoic Crustal Extension Jointed
Geology of Neoproterozoic to Cambrian Adelaide Geosyncline and Cambrian Delamerian Orogen
Geology of Neoproterozoic to Cambrian Adelaide Geosyncline and Cambrian Delamerian Orogen W. V. Preiss Geological Survey Branch, PIRSA Link line traverses Flinders Ranges to join western end of E-W Curnamona
Rocks: Materials of the Solid Earth
1 Rocks: Materials of the Solid Earth Presentation modified from: Instructor Resource Center on CD-ROM, Foundations of Earth Science,, 4 th Edition, Lutgens/Tarbuck, Rock Cycle Igneous Rocks Today 2 Rock
B) color B) Sediment must be compacted and cemented before it can change to sedimentary rock. D) igneous, metamorphic, and sedimentary rocks
1. Which characteristic of nonsedimentary rocks would provide the least evidence about the environment in which the rocks were formed? A) structure B) color C) crystal size D) mineral composition 2. Which
THE ROCK CYCLE & ROCKS. Subtitle
THE ROCK CYCLE & ROCKS Subtitle 3. Three rocks that do not have minerals or are composed of nonmineral matter. Coal Pumuce Obsidian THE ROCK CYCLE Why do scientists study rocks? Rocks contain clues about
Sediment and sedimentary rocks Sediment
Sediment and sedimentary rocks Sediment From sediments to sedimentary rocks (transportation, deposition, preservation and lithification) Types of sedimentary rocks (clastic, chemical and organic) Sedimentary
Anthill Resources Yukon - An Update on the Einarson Project
Anthill Resources Yukon - An Update on the Einarson Project The Eastern Extension of a Carlin-type Gold Trend in the Selwyn Basin Anthill Resources Ltd Yukon Claim Holdings Over 2400 km 2 Property Location
New geologic mapping + and associated economic potential on northern Hall Peninsula, Baffin Island, Nunavut
New geologic mapping + and associated economic potential on northern Hall Peninsula, Baffin Island, Nunavut Holly Steenkamp, M.Sc. Regional Mapping Geoscientist David Mate, M.Sc. Chief Geologist November
Instructor: Ms. Terry J. Boroughs Geology 8 INTRODUCTION TO ROCKS AND THE ROCK CYCLE
DATE DUE: Name: Instructor: Ms. Terry J. Boroughs Geology 8 INTRODUCTION TO ROCKS AND THE ROCK CYCLE Instructions: Read each question carefully before selecting the BEST answer Provide specific and detailed
1. Base your answer to the following question on The diagram below represents a part of the crystal structure of the mineral kaolinite.
1. Base your answer to the following question on The diagram below represents a part of the crystal structure of the mineral kaolinite. An arrangement of atoms such as the one shown in the diagram determines
2 Igneous Rock. How do igneous rocks form? What factors affect the texture of igneous rock? BEFORE YOU READ. Rocks: Mineral Mixtures
CHAPTER 4 2 Igneous Rock SECTION Rocks: Mineral Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do igneous rocks form? What factors affect the texture
Page 1. Name:
Name: Questions 1 through 3 refer to the following: The diagrams below represent two rock outcrops found several miles apart in New York State. Individual rock layers are lettered, and fossils and rock
Rock Cycle and Rock Types Homework
Rock Cycle and Rock Types Homework Completion Complete each statement. 1. A(n) is a solid mass of mineral or mineral-like matter that occurs naturally. 2. Rocks are generally classified as igneous,, or
Igneous Rocks. Sedimentary Rocks. Metamorphic Rocks
Name: Date: Igneous Rocks Igneous rocks form from the solidification of magma either below (intrusive igneous rocks) or above (extrusive igneous rocks) the Earth s surface. For example, the igneous rock
I m good. Thank you.
I m good. Thank you. The Rock Cycle Ag Earth Science Chapter 3.1 A natural occurring, inorganic crystalline material with a unique chemical composition. mineral A consolidated mixture of minerals rock
Depositional History and Petroleum Potential of Ombilin Basin, West Sumatra - Indonesia, Based on Surface Geological Data*
Depositional History and Petroleum Potential of Ombilin Basin, West Sumatra - Indonesia, Based on Surface Geological Data* Yahdi Zaim 1, Litto Habrianta 2, Chalid I. Abdullah 1, Aswan 1, Yan Rizal 1, Nurcahyo
Geology of the Hawaiian Islands
Geology of the Hawaiian Islands Class 12 19 February 2004 A B C D F 97 94 92 91 88 87 86 85 85 84 82 77 73 73 mean 66 64 60 69 60 57 51 29 Exam Scores Mean = 71 Median = 82/77 Any Questions? Sedimentary
Lecture 3 Rocks and the Rock Cycle Dr. Shwan Omar
Rocks A naturally occurring aggregate of one or more minerals (e.g., granite), or a body of non-crystalline material (e.g., obsidian glass), or of solid organic material (e.g., coal). Rock Cycle A sequence
Which rock is shown? A) slate B) dunite C) gneiss D) quartzite
1. Which metamorphic rock will have visible mica crystals and a foliated texture? A) marble B) quartzite C) schist D) slate 2. The recrystallization of unmelted material under high temperature and pressure
Igneous and Metamorphic Rock Forming Minerals. Department of Geology Mr. Victor Tibane SGM 210_2013
Igneous and Metamorphic Rock Forming Minerals Department of Geology Mr. Victor Tibane 1 SGM 210_2013 Grotzinger Jordan Understanding Earth Sixth Edition Chapter 4: IGNEOUS ROCKS Solids from Melts 2011
Why is quartz one of the most weathering-resistant minerals?
Why is it a poor idea to use limestone for tombstones in a wet hot area like the Amazon rainforest? A) Because limestone weathers at a very fast rate B) Because limestone weathers at a very low rate C)
GLY 155 Introduction to Physical Geology, W. Altermann. Grotzinger Jordan. Understanding Earth. Sixth Edition
Grotzinger Jordan Understanding Earth Sixth Edition Chapter 4: IGNEOUS ROCKS Solids from Melts 2011 by W. H. Freeman and Company Chapter 4: Igneous Rocks: Solids from Melts 1 About Igneous Rocks Igneous
JOSH LEIGH Project Exploration Geologist June ASX Code AIV
COALSTOUN AND BOOUBYJAN Porphyry Copper-Gold Complexes, their structural setting, geology and geochemistry Joshua Leigh 1, Doug Young 2, Jose Veracruz 3, Paul Ashley 3 - ( 1 ActivEX Limited, 2 Consultant,
RR#7 - Multiple Choice
1. Which mineral is mined for its iron content? 1) hematite 2) fluorite 3) galena 4) talc 2. Which rock is composed of the mineral halite that formed when seawater evaporated? 1) limestone 2) dolostone
Plate tectonics, rock cycle
Dikes, Antarctica Rock Cycle Plate tectonics, rock cycle The Rock Cycle A rock is a naturally formed, consolidated material usually composed of grains of one or more minerals The rock cycle shows how one
Happy Tuesday. Pull out a ½ sheet of paper
Happy Tuesday Pull out a ½ sheet of paper 1. Physical properties of a mineral are predominantly related to 1. the external conditions of temperature, pressure, and amount of space available for growth.
WEALTH MINERALS LTD. Mackenzie Gold Project
WEALTH MINERALS LTD. Mackenzie Gold Project the Search for a Sediment Hosted Vein Deposit Presented by Paul Klipfel Mineral ineral Resource Services ervices Inc. Mackenzie Misinchinka Range Property Location
Red Sea Basins. by Prof. Dr. Abbas Mansour
Red Sea Basins TECTONO-SEDIMENTARY EVOLUTION OF THE NW PARTS OF THE RED SEA The pre-rift rift by Prof. Dr. Abbas Mansour 1.a. The Precambrian basement and the inherited structural pattern of the rift
Engineering Geology ECIV 2204
Engineering Geology ECIV 2204 Instructor : Dr. Jehad Hamad 2017-2016 Chapter (3) Igneous Rocks Chapter 3: Rocks: Materials of the Solid Earth Igneous Rocks Chapter 3: Rocks: Materials of the Solid Earth
DÉCOUVERTE Positioned for Discovery in James Bay, Quebec. Investor Presentation, January 2018 by Danae Voormeij, MSc, PGeo
DÉCOUVERTE Positioned for Discovery in James Bay, Quebec Investor Presentation, January 2018 by Danae Voormeij, MSc, PGeo Location Maps and Infrastructure Location: Durango Resources 100% owned Découverte
Sedimentary Rocks, Stratigraphy, and Geologic Time
Sedimentary Rocks, Stratigraphy, and Geologic Time A rock is any naturally formed, nonliving, coherent aggregate mass of solid matter that constitutes part of a planet, asteroid, moon, or other planetary
40-50 Minutes, 3 minutes per station, 13 Stations, samples provided by UWM and Pierre Couture
Event: Judge: Rocks & Minerals Pierre couture 40-50 Minutes, 3 minutes per station, 13 Stations, samples provided by UWM and Pierre Couture 1-4 Minerals (50 points total) 5-7 Igneous Rocks (50 points total)
3. GEOLOGY. 3.1 Introduction. 3.2 Results and Discussion Regional Geology Surficial Geology Mine Study Area
3. GEOLOGY 3.1 Introduction This chapter discusses the baseline study of the geology and mineralization characteristics of the mine study area. The study consolidates existing geological data and exploration
Name Class Date STUDY GUIDE FOR CONTENT MASTERY
Igneous Rocks What are igneous rocks? In your textbook, read about the nature of igneous rocks. Use each of the terms below just once to complete the following statements. extrusive igneous rock intrusive
Answers. Rocks. Year 8 Science Chapter 8
Answers Rocks Year 8 Science Chapter 8 p171 1 Rocks are made up of minerals such as quartz, feldspars, micas, and calcite. Different rocks are made up of different combinations of minerals. 2 Igneous,
LAB 2 IDENTIFYING MATERIALS FOR MAKING SOILS: ROCK AND PARENT MATERIALS
LAB 2 IDENTIFYING MATERIALS FOR MAKING SOILS: ROCK AND PARENT MATERIALS Learning outcomes The student is able to: 1. understand and identify rocks 2. understand and identify parent materials 3. recognize
GEOL Introductory Geology: Exploring Planet Earth Fall 2010 Test #2 October 18, 2010
GEOL 101 - Introductory Geology: Exploring Planet Earth Fall 2010 Test #2 October 18, 2010 Name KEY ID# KEY Multiple choice questions (2 points each). 1. What type of metamorphic rock is formed over large
GEOLOGY MEDIA SUITE Chapter 5
UNDERSTANDING EARTH, SIXTH EDITION GROTZINGER JORDAN GEOLOGY MEDIA SUITE Chapter 5 Sedimentation Rocks Formed by Surface Processes 2010 W.H. Freeman and Company Mineralogy of sandstones Key Figure 5.12
to represent sediments deposited through a series of marine transgressive
i Hydrogeol ogy of Sal tsprinq s1 and Two main assemblages of rocks directly underly Saltspring sland. The Napajmo Group of Upper Cretaceous aqe comprising sedimentary rocks lies in th, brthern half and
Answers: Internal Processes and Structures (Isostasy)
Answers: Internal Processes and Structures (Isostasy) 1. Analyse the adjustment of the crust to changes in loads associated with volcanism, mountain building, erosion, and glaciation by using the concept
Before the 1700 s, scientists thought that the Earth was only 6,000 years old. This mindset was based on biblical references.
Before the 1700 s, scientists thought that the Earth was only 6,000 years old. This mindset was based on biblical references. However, as scientists began to better understand the processes that shape
Igneous Rock Processes and Identification
Igneous Rock Processes and Identification http://www.rockhounds.com/rockshop/rockkey/index.html http://earthsci.org/education/teacher/basicgeol/igneous/igneous.html#kindsofigneousrocks Major Concepts 1)
ES Chap 5 & 6: Rocks
ES Chap 5 & 6: Rocks Objectives 1. Identify and explain characteristics of igneous rocks. This means that if I am given an igneous rock I: a. Can use grain size to identify a rock as intrusive, extrusive,
2. An electron is the smallest unit of matter that retains the characteristics of an element. a. True
/ False 1. Minerals are made of rocks. False Introduction 2. An electron is the smallest unit of matter that retains the characteristics of an element. False 3. A proton is a positively charged particle
Rocks and The Rock Cycle
Rocks and The Rock Cycle 3 Main Rock Types Igneous Sedimentary Metamorphic 3 Main Rock Types Igneous Sedimentary Metamorphic Igneous EXTRUSIVE Forms when lava cools quickly on the Earths surface Forms
A. IGNEOUS Rocks formed by cooling and hardening of hot molten rock called magma (within crust or at its surface).
EARTH SCIENCE 11 CHAPTER 5 NOTES KEY How Earth's Rocks Were Formed Early geologists believed that the physical features of the Earth were formed by sudden spectacular events called CATASTROPHES. Modern
Earth Science Chapter 6 Rocks
Earth Science Chapter 6 Rocks I. Rocks and the Rock Cycle * Material that makes up the solid part of the Earth. * Made of a variety of different combinations of minerals and organic matter. A. Three Major
Chapter 8: The Dynamic Planet
Chapter 8: The Dynamic Planet I. The Pace of Change A. The Geologic Time Scale II. Earth s Structure and Internal Energy A. The Earth s Core B. The Earth s Mantle C. The Earth s Crust III. The Geologic
1. Base your answer to the following question on on the photographs and news article below. Old Man s Loss Felt in New Hampshire
UNIT 3 EXAM ROCKS AND MINERALS NAME: BLOCK: DATE: 1. Base your answer to the following question on on the photographs and news article below. Old Man s Loss Felt in New Hampshire FRANCONIA, N.H. Crowds
Rocks and Minerals Exam KEY. Princeton Science Olympiad Invitational
For Office Use Only: Part 1: / Part 2: / Score: /150 Team Number: 0 Team Name: KEY Participant names: 2016-2017 Rocks and Minerals Exam KEY Princeton Science Olympiad Invitational Instructions (optional):
Review - Unit 2 - Rocks and Minerals
Review - Unit 2 - Rocks and Minerals Base your answers to questions 1 and 2 on the diagram below, which shows the results of three different physical tests, A, B, and C, that were performed on a mineral.
Rocks and The Rock Cycle
Rocks and The Rock Cycle 3 Main Rock Types Igneous Sedimentary Metamorphic 3 Main Rock Types Igneous Sedimentary Metamorphic Igneous EXTRUSIVE Forms when lava cools quickly on the Earths surface Forms
Elements Minerals Rock
Elements Minerals Rock Minerals Naturally occurring Solid Inorganic/Non-living Fixed chemical formula Crystalline structure Identified by hardness characteristic Minerals (examples) Halite(table salt)
Writing Earth s History
Earths History Writing Earth s History How is Earths History like writing in your Journal? Everyday, something happens and, with a pen, it is written down in the pages of your journal. As you continue,