Rocks chapter 3
... poor in silica(SiO2) (basalt is an example) Granitic rock; rich in silica, light colored, lower density: builds up pressure before released. Usually cools before it reaches the surface (granite is example) Andesitic Rock: composition between basaltic and granitic rock (Cascade Mt are example) ...
... poor in silica(SiO2) (basalt is an example) Granitic rock; rich in silica, light colored, lower density: builds up pressure before released. Usually cools before it reaches the surface (granite is example) Andesitic Rock: composition between basaltic and granitic rock (Cascade Mt are example) ...
Suggested Answers: Extension Questions
... - recrystallisation of clay/mud to form new minerals (micas) that lie flat. (at 90o to maximum stress direction) (d) (i) Any 2: Roofing, flooring, gravestones, garden decoration, snooker (or pool or billiard) tables (ii) Any 2: Impermeable, easily split, plentiful, strong, durable, attractive, flat ...
... - recrystallisation of clay/mud to form new minerals (micas) that lie flat. (at 90o to maximum stress direction) (d) (i) Any 2: Roofing, flooring, gravestones, garden decoration, snooker (or pool or billiard) tables (ii) Any 2: Impermeable, easily split, plentiful, strong, durable, attractive, flat ...
3. igneous and metamorphic petrology
... 3.2 Characteristics of magma: temperature, pressure, density. Constitution of magma. Kinetics of magma: viscosity, diffusion, formation of crystal in a liquid. 3.3 Crystallisation of magma: crystallization and melting as changes in state. Crystallisation and melting intervals of different magma comp ...
... 3.2 Characteristics of magma: temperature, pressure, density. Constitution of magma. Kinetics of magma: viscosity, diffusion, formation of crystal in a liquid. 3.3 Crystallisation of magma: crystallization and melting as changes in state. Crystallisation and melting intervals of different magma comp ...
Sediments and Sedimentary Rocks
... Arkoses are composed primarily of quartz and feldspars. They have been subjected to more intense weathering than lithic sandstones or graywackes, and most of the mafic minerals are gone. Arkoses are enriched in K-feldspar relative to plagioclase because K-spar dissolves more slowly then plagioclase ...
... Arkoses are composed primarily of quartz and feldspars. They have been subjected to more intense weathering than lithic sandstones or graywackes, and most of the mafic minerals are gone. Arkoses are enriched in K-feldspar relative to plagioclase because K-spar dissolves more slowly then plagioclase ...
Structures and deformations correlated to the activation of a
... deformation localization. The MSZ is located on the eastern boundary of the Neoarchean to Paleoproterozoic Terre Adélie craton (TAC) and it separates the TAC from a Paleozoic granitic domain to the east. ...
... deformation localization. The MSZ is located on the eastern boundary of the Neoarchean to Paleoproterozoic Terre Adélie craton (TAC) and it separates the TAC from a Paleozoic granitic domain to the east. ...
mafic and ultmmafic rock associations in the east arc of
... Alpine-type. They extend dlscontinuously from the eastern-most extremlty of the peninsula west-ward and curve southwest-ward before they reach the neck of Sulawesi following the South-East Arm. The south-western one comprises a south - east trending string of plutons each of relatively smal-1 outcro ...
... Alpine-type. They extend dlscontinuously from the eastern-most extremlty of the peninsula west-ward and curve southwest-ward before they reach the neck of Sulawesi following the South-East Arm. The south-western one comprises a south - east trending string of plutons each of relatively smal-1 outcro ...
Name: 1 GEOL 104 Dinosaurs: A Natural History Geology
... Remember to use your basic Principles of Stratigraphy. These are: Steno’s Principles Original Horizontality: When sedimentary rocks are first deposited, they deposit as horizontal sheets ...
... Remember to use your basic Principles of Stratigraphy. These are: Steno’s Principles Original Horizontality: When sedimentary rocks are first deposited, they deposit as horizontal sheets ...
The Pecos greenstone belt - New Mexico Geological Society
... broadly similar to suites found in some Archean greenstone belts such as those in the western Vermilion District, northeastern Minnesota (Morey, 1978) and South Surgeon Lake, Ontario (Franklin, 1978). The most abundant rock type within the volcanic suite is fine- to medium-grained amphibolite, or me ...
... broadly similar to suites found in some Archean greenstone belts such as those in the western Vermilion District, northeastern Minnesota (Morey, 1978) and South Surgeon Lake, Ontario (Franklin, 1978). The most abundant rock type within the volcanic suite is fine- to medium-grained amphibolite, or me ...
Rocks
... Detritial rocks are named according the shape and size of the sediments If the sediments are large and round they are called conglomerate rocks, but if they are large and sharp they are called brecca rocks If the sediments are sand size the rock is called ...
... Detritial rocks are named according the shape and size of the sediments If the sediments are large and round they are called conglomerate rocks, but if they are large and sharp they are called brecca rocks If the sediments are sand size the rock is called ...
What lies beneath Table Mountain or all models are wrong, but
... more and older orogenic cycles are preserved on the African continent, but the very old rock record becomes somewhat sketchy beyond this. The ancient sutures along which these movements have taken place are no longer manifested as mountain belts; millions of years of erosion have taken care of that. ...
... more and older orogenic cycles are preserved on the African continent, but the very old rock record becomes somewhat sketchy beyond this. The ancient sutures along which these movements have taken place are no longer manifested as mountain belts; millions of years of erosion have taken care of that. ...
weathering and the breakdown of rocks
... and composition of each layer. You should know the difference between lithosphere and aesthenosphere. You should know the three most abundant gases in the atmosphere. What are the three ways that heat is transmitted and which works best in the Earth. What’s the difference between a rock and a minera ...
... and composition of each layer. You should know the difference between lithosphere and aesthenosphere. You should know the three most abundant gases in the atmosphere. What are the three ways that heat is transmitted and which works best in the Earth. What’s the difference between a rock and a minera ...
Geological Summary of the Tumbler Ridge Area
... continent into eastern and western parts. Sea levels rose and sank, and the Tumbler Ridge area would repeatedly alternate between shallow underwater habitat, coastal plain, and shoreline habitat. As the new mountains eroded, extensive estuaries would develop at the coast, then be swamped with the ne ...
... continent into eastern and western parts. Sea levels rose and sank, and the Tumbler Ridge area would repeatedly alternate between shallow underwater habitat, coastal plain, and shoreline habitat. As the new mountains eroded, extensive estuaries would develop at the coast, then be swamped with the ne ...
Study Guide Geology 303, SDSU Spring PEOPLE for TEST 1: 1
... continually recycled). The age of the Earth has to be older than the oldest rocks and minerals, and is about 4.6 billion (4,600 million) years old. 15.(2)-Pangaea: A supercontinent that existed during Late Paleozoic time when all the continents were unified into a single landmass. 16.(2)-plume: An a ...
... continually recycled). The age of the Earth has to be older than the oldest rocks and minerals, and is about 4.6 billion (4,600 million) years old. 15.(2)-Pangaea: A supercontinent that existed during Late Paleozoic time when all the continents were unified into a single landmass. 16.(2)-plume: An a ...
Earth System - Plate Tectonics
... Based on the current position of the continents, in what general direction did South America drift away Plate Tectonics Quiz from Name:Pangaea? Date: a. East Class: b. West c. North d. South 2. What evidence did Alfred Wegener use to support his theory of continental drift? a. Fossil discoveries b. ...
... Based on the current position of the continents, in what general direction did South America drift away Plate Tectonics Quiz from Name:Pangaea? Date: a. East Class: b. West c. North d. South 2. What evidence did Alfred Wegener use to support his theory of continental drift? a. Fossil discoveries b. ...
Precambrian Crystalline Basement rocks of Eritrea
... limestones and cherts b) Except in zones of ductile shear, much of the primary fabric has survived deformation; metamorphism is mostly of low grade. c) A number of ophiolite complexes are associated with volcanic rocks and sediments; some are preserved more or less complete, others highly dismembere ...
... limestones and cherts b) Except in zones of ductile shear, much of the primary fabric has survived deformation; metamorphism is mostly of low grade. c) A number of ophiolite complexes are associated with volcanic rocks and sediments; some are preserved more or less complete, others highly dismembere ...
Sample Lesson Plan - Desert Outdoor Center
... A. Talk about what rocks are. • Rocks are a mixture of minerals. Minerals are the ingredients that make up rocks. • Get three balls of different colors of clay. Individual balls represent a red mineral, blue mineral, and yellow mineral. If you took some of the red, blue, and yellow ball of clay, you ...
... A. Talk about what rocks are. • Rocks are a mixture of minerals. Minerals are the ingredients that make up rocks. • Get three balls of different colors of clay. Individual balls represent a red mineral, blue mineral, and yellow mineral. If you took some of the red, blue, and yellow ball of clay, you ...
Introduction to Geology
... • Sediments will lithify into sedimentary rocks • Accumulate in layers at Earth’s surface • Metamorphic rocks • Formed by “changing” preexisting igneous, sedimentary, or other metamorphic rocks • Driving forces are heat and pressure ...
... • Sediments will lithify into sedimentary rocks • Accumulate in layers at Earth’s surface • Metamorphic rocks • Formed by “changing” preexisting igneous, sedimentary, or other metamorphic rocks • Driving forces are heat and pressure ...
Biogeochemical_Cycles_PPT
... • Only a small amount of Earth’s water is available as fresh water, in fact…less than 1% is fresh water. • Of that 1%... - 99% goes into underground reservoirs known as aquifers - It may take thousands of years for aquifers to fill up and just as long for humans to “tap” them to get fresh water. - ...
... • Only a small amount of Earth’s water is available as fresh water, in fact…less than 1% is fresh water. • Of that 1%... - 99% goes into underground reservoirs known as aquifers - It may take thousands of years for aquifers to fill up and just as long for humans to “tap” them to get fresh water. - ...
Geology of the Hawaiian Islands
... the crust, often due to lava movement into shallow magma chambers Classified according to the kind of movement that has occurred along them ...
... the crust, often due to lava movement into shallow magma chambers Classified according to the kind of movement that has occurred along them ...
Science Affiliates Workshop NY Geology Powerpoint
... a continent’s ancient nucleus and its foundations Craton = Shield + Platform •Along the margins of cratons: more continental crust was later added as the continents took their present sizes and shapes http://www.salemstate.edu/~lhanson/gls210/gls210_Tectonic.htm ...
... a continent’s ancient nucleus and its foundations Craton = Shield + Platform •Along the margins of cratons: more continental crust was later added as the continents took their present sizes and shapes http://www.salemstate.edu/~lhanson/gls210/gls210_Tectonic.htm ...
Review Sheet
... Describe the relationship between volcanoes, earthquakes, & plate boundaries. List & describe evidence for the theory of Sea Floor Spreading. Explain convection currents & how they are related to density. List plate boundary information by: plate type (O-O, O-C, C-C); formations that are made there; ...
... Describe the relationship between volcanoes, earthquakes, & plate boundaries. List & describe evidence for the theory of Sea Floor Spreading. Explain convection currents & how they are related to density. List plate boundary information by: plate type (O-O, O-C, C-C); formations that are made there; ...
LESSON 10 – Earth`s History: Estimating Geologic Time
... Inclusions – This states that objects enclosed in rock must be older than the time of rock formation ...
... Inclusions – This states that objects enclosed in rock must be older than the time of rock formation ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.