mantle
... uppermost 15-35 km of crust is brittle enough to produce earthquakes. Oceanic crust is thinnest; continental crust is thickest. Llithosphere—the outer solid part of the earth, including the crust and uppermost mantle. The lithosphere is about 100 km thick, although its thickness is age dependent (ol ...
... uppermost 15-35 km of crust is brittle enough to produce earthquakes. Oceanic crust is thinnest; continental crust is thickest. Llithosphere—the outer solid part of the earth, including the crust and uppermost mantle. The lithosphere is about 100 km thick, although its thickness is age dependent (ol ...
Chapter 6 Structure
... islands， regional scale Post-Yanshanian basement faults， Late Jurassic to Early Cretaceous faults related to volcanic and plutonic activity， photolineaments and joints. The eastnortheast-striking Lantau Dyke Swarm also exerts a strong geomorphological influence， especially in the eastern part of the ...
... islands， regional scale Post-Yanshanian basement faults， Late Jurassic to Early Cretaceous faults related to volcanic and plutonic activity， photolineaments and joints. The eastnortheast-striking Lantau Dyke Swarm also exerts a strong geomorphological influence， especially in the eastern part of the ...
LECTURE 19
... the Skiddaw Aureole, UK • The aureole around the Skiddaw granite was sub-divided into three zones, principally on the basis of textures: ...
... the Skiddaw Aureole, UK • The aureole around the Skiddaw granite was sub-divided into three zones, principally on the basis of textures: ...
Folded Mountains
... Many mountains form at or near plate boundaries. Remember that the lithosphere is broken up into large plates. These plates float around on the molten mantle deep below the surface. Sometimes the plates bump into each other. Sometimes they pull apart. Either way, stress is placed on the ...
... Many mountains form at or near plate boundaries. Remember that the lithosphere is broken up into large plates. These plates float around on the molten mantle deep below the surface. Sometimes the plates bump into each other. Sometimes they pull apart. Either way, stress is placed on the ...
Orogenesis: Folding, Faulting, and Volcanism
... Landforms: Effusive • Shield volcanoes – large, rounded volcanoes with a gentle slope – central vent – flat terrain (or can not build up dome) – constructed by a series of basalt flows over time. ...
... Landforms: Effusive • Shield volcanoes – large, rounded volcanoes with a gentle slope – central vent – flat terrain (or can not build up dome) – constructed by a series of basalt flows over time. ...
Sycamore Canyon Geology
... unfortunate that we couldn’t get to Penasco Canyon to see the obsidian formation and likely some other interesting rocks. ...
... unfortunate that we couldn’t get to Penasco Canyon to see the obsidian formation and likely some other interesting rocks. ...
VIDEO WEB HIT HOMEWORK – part 2
... - Forms the foundation upon which other sediments are deposited - Craton: the nucleus of a continent made up of a shield and a platform ...
... - Forms the foundation upon which other sediments are deposited - Craton: the nucleus of a continent made up of a shield and a platform ...
Peel Atlas 2 - CPAWS Yukon
... deposits over a time span of nearly half a billion years (1,200 to 780 million years ago)(CPAWS, ...
... deposits over a time span of nearly half a billion years (1,200 to 780 million years ago)(CPAWS, ...
Chapter 5: Mountain Belts and Continental Crust At this point in the
... Mt. McKinley (or Denali, as the Athabascans call it) is part of the Alaska Range and consists of 56 million year-old granitic rock that was intruded into older, exotic island arc terranes during their accretion onto the North American plate. Denali is still rising at about 1 mm/year, pushed up by c ...
... Mt. McKinley (or Denali, as the Athabascans call it) is part of the Alaska Range and consists of 56 million year-old granitic rock that was intruded into older, exotic island arc terranes during their accretion onto the North American plate. Denali is still rising at about 1 mm/year, pushed up by c ...
No Slide Title
... – These plates slide slowly across earth's surface. • Ocean basins form where continents crack and pull apart. • Magma forced up through cracks in oceanic crust form mid-oceanic ridges. • Earthquakes are caused by grinding and jerking as plates slide past each other. ...
... – These plates slide slowly across earth's surface. • Ocean basins form where continents crack and pull apart. • Magma forced up through cracks in oceanic crust form mid-oceanic ridges. • Earthquakes are caused by grinding and jerking as plates slide past each other. ...
Section 8
... Layers Defined by Composition Earth’s interior consists of three major zones defined by their chemical composition— the crust, mantle, and core. ...
... Layers Defined by Composition Earth’s interior consists of three major zones defined by their chemical composition— the crust, mantle, and core. ...
Sedimentary Rocks
... cave. ~hen the water evaporates, a thin deposit of limestone is left behind. Over a long period oi" time, the deposits are built up into pillars, spikes, and other struculres. Limestone may also be produced through chemical changes in ocean water that cause grains of calcite to form. The small grain ...
... cave. ~hen the water evaporates, a thin deposit of limestone is left behind. Over a long period oi" time, the deposits are built up into pillars, spikes, and other struculres. Limestone may also be produced through chemical changes in ocean water that cause grains of calcite to form. The small grain ...
Earth Science Notes - watertown.k12.wi.us
... • No displacement after cracking The earth’s crust is broken into large sections called Earth’s Plate Boundaries follow Fault Lines Ancient plate boundaries are hard to spot. An example is the ...
... • No displacement after cracking The earth’s crust is broken into large sections called Earth’s Plate Boundaries follow Fault Lines Ancient plate boundaries are hard to spot. An example is the ...
PS review Earth
... crust. Oceanic plate melts, rising magma pushes up crust above it forming a mountain. • Example: Andes Mountains • Collision of continental plates also can form mountains. Example: Himalayas ...
... crust. Oceanic plate melts, rising magma pushes up crust above it forming a mountain. • Example: Andes Mountains • Collision of continental plates also can form mountains. Example: Himalayas ...
Geology Practice Test 2012 Minerals – use your mineral flow chart
... 9. ______ A rock that has been changed by heat and pressure. 10. ______ The type of rock that forms from the compaction of sediments. 11. ______ What type of bedrock is found in the Twin Cities area? 12. _____Where most sedimentary rocks form. 13. _____Does sandstone form in deep or shallow water? 1 ...
... 9. ______ A rock that has been changed by heat and pressure. 10. ______ The type of rock that forms from the compaction of sediments. 11. ______ What type of bedrock is found in the Twin Cities area? 12. _____Where most sedimentary rocks form. 13. _____Does sandstone form in deep or shallow water? 1 ...
UNIT 5 PLANET EARTH
... Index fossil- fossil that can be uses to determine the age of material in which it is found Half life- the amount of time a radioactive substance takes to be reduced by one half Radiocarbon dating- type of radiometric dating, to find out when recent events in Earth’s history occurred Eons- the large ...
... Index fossil- fossil that can be uses to determine the age of material in which it is found Half life- the amount of time a radioactive substance takes to be reduced by one half Radiocarbon dating- type of radiometric dating, to find out when recent events in Earth’s history occurred Eons- the large ...
Lecture 5b (Plate Tectonics)
... More initial heat Several times more radioactive decay When Iron melted it fell to core ...
... More initial heat Several times more radioactive decay When Iron melted it fell to core ...
APES-Chapter-16-Geology-PPT-Part
... surface when magma (molten rock) wells up, cools, and hardens into rock (granite, lava rock) 2. Sedimentary Rock: formed from sediment when rocks are eroded, transported to another place, and deposited in water (sandstone) 3. Metamorphic Rock: rock is subjected to high temperature, high pressure, or ...
... surface when magma (molten rock) wells up, cools, and hardens into rock (granite, lava rock) 2. Sedimentary Rock: formed from sediment when rocks are eroded, transported to another place, and deposited in water (sandstone) 3. Metamorphic Rock: rock is subjected to high temperature, high pressure, or ...
Solid Earth - SchoolNova
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
IGNEOUS ROCK - CoconinoHighSchool
... When magmas reach the surface of the Earth they erupt from a vent. They may erupt explosively or non-explosively. Non-explosive eruptions are favored by low gas content and low viscosity magmas (basaltic to andesitic magmas). Usually begin with fire fountains due to release of dissolved gases ...
... When magmas reach the surface of the Earth they erupt from a vent. They may erupt explosively or non-explosively. Non-explosive eruptions are favored by low gas content and low viscosity magmas (basaltic to andesitic magmas). Usually begin with fire fountains due to release of dissolved gases ...
The theory of plate tectonics
... The word igneous means fire. Igneous rocks are formed directly from magma as it cools. The type of igneous rock depends upon the speed at which magma cools. Slow cooling – intrusive igneous rock Igneous rocks such as granite are formed when magma finds weaknesses and intrudes into the crust. As it d ...
... The word igneous means fire. Igneous rocks are formed directly from magma as it cools. The type of igneous rock depends upon the speed at which magma cools. Slow cooling – intrusive igneous rock Igneous rocks such as granite are formed when magma finds weaknesses and intrudes into the crust. As it d ...
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.