The evolution of Life in the History of Earth
... Continental crust - lighter and thicker (up to 70 km underneath mountains) ...
... Continental crust - lighter and thicker (up to 70 km underneath mountains) ...
Earth`s Matter
... ○ Sandstone and limestone are used as building materials. Limestone is used to make cement and steel. ...
... ○ Sandstone and limestone are used as building materials. Limestone is used to make cement and steel. ...
Chapter1305.ppt
... caused by hot-spot volcanoes. High levels of volcanic activity may also have influenced the climate by increasing the amount of CO2 in the atmosphere, and therefore contributing to climate warming and the subsequent melting of ice sheets > sea level rise. Angiosperms (flowering plants) appeared in t ...
... caused by hot-spot volcanoes. High levels of volcanic activity may also have influenced the climate by increasing the amount of CO2 in the atmosphere, and therefore contributing to climate warming and the subsequent melting of ice sheets > sea level rise. Angiosperms (flowering plants) appeared in t ...
Handout
... caused by hot-spot volcanoes. High levels of volcanic activity may also have influenced the climate by increasing the amount of CO2 in the atmosphere, and therefore contributing to climate warming and the subsequent melting of ice sheets > sea level rise. Angiosperms (flowering plants) appeared in t ...
... caused by hot-spot volcanoes. High levels of volcanic activity may also have influenced the climate by increasing the amount of CO2 in the atmosphere, and therefore contributing to climate warming and the subsequent melting of ice sheets > sea level rise. Angiosperms (flowering plants) appeared in t ...
5.1.4 The felsic unit
... profiles across the Canadian Shield (Ludden et al., 1993; Calvert et al., 1995; Cook et al., 1999). Metasedimentary belts between greenstone belts are considered to represent accretionary prisms developed during subduction and collision of arcs (Percival, 1989; Card, 1990; Williams, 1990). The Queti ...
... profiles across the Canadian Shield (Ludden et al., 1993; Calvert et al., 1995; Cook et al., 1999). Metasedimentary belts between greenstone belts are considered to represent accretionary prisms developed during subduction and collision of arcs (Percival, 1989; Card, 1990; Williams, 1990). The Queti ...
Deforming Earth*s Crust
... moves because of stress →compression← or ←tension → • There are Three types of Faults: – Normal Fault – Reverse Fault – Strike Slip Fault ...
... moves because of stress →compression← or ←tension → • There are Three types of Faults: – Normal Fault – Reverse Fault – Strike Slip Fault ...
Class PowerPoint on Rock Cycle, Fossils, and Fossil
... organisms, is trapped in the sediment layers it is compacted, and heated over time to form OIL. Natural Gas may also form in areas where oil is located. Animation of Oil and ...
... organisms, is trapped in the sediment layers it is compacted, and heated over time to form OIL. Natural Gas may also form in areas where oil is located. Animation of Oil and ...
IGNEOUS ROCKS
... – DIKE• If no layering in country rock • If country rock is layered- Discordant – SILL- less common • Concordant- parallel to layering in country rock Pluton BATHOLITH– Large intrusive body – Exposed in an area greater than 100 square Km. – Coalesced smaller plutons smaller bodies are called STOCKS ...
... – DIKE• If no layering in country rock • If country rock is layered- Discordant – SILL- less common • Concordant- parallel to layering in country rock Pluton BATHOLITH– Large intrusive body – Exposed in an area greater than 100 square Km. – Coalesced smaller plutons smaller bodies are called STOCKS ...
GY 112 Lecture Notes
... sequences) and some older (e.g., Paleozoic) sedimentary rocks (deep marine siliciclastic rocks, chalks etc). For the first time, igneous intrusions and associated volcanism also started to occur in western North America. The intrusions were largely felsic (granite) in composition as were the volcani ...
... sequences) and some older (e.g., Paleozoic) sedimentary rocks (deep marine siliciclastic rocks, chalks etc). For the first time, igneous intrusions and associated volcanism also started to occur in western North America. The intrusions were largely felsic (granite) in composition as were the volcani ...
EGU2017-9571 - CO Meeting Organizer
... volcanic rocks of the Transdanubian Range formed in an extensional regime of the ocean margin and compare them to coeval volcanic formations of the Southern Alps formed in similar geodynamic settings. Andesite (porphyric pilotaxitic texture, with plagioclase and hypersthene, subordinately augite and ...
... volcanic rocks of the Transdanubian Range formed in an extensional regime of the ocean margin and compare them to coeval volcanic formations of the Southern Alps formed in similar geodynamic settings. Andesite (porphyric pilotaxitic texture, with plagioclase and hypersthene, subordinately augite and ...
Why Plates Move… - Mr Vincent Science
... The theory of plate tectonics explains how the plates move but not why. What do we know about the earth’s mantle and crust that might help us determine the mechanisms involved? Seismic data tells us that the mantle is fluid The core of the earth is quite hot – heat left over from the earth’s formati ...
... The theory of plate tectonics explains how the plates move but not why. What do we know about the earth’s mantle and crust that might help us determine the mechanisms involved? Seismic data tells us that the mantle is fluid The core of the earth is quite hot – heat left over from the earth’s formati ...
Study Guide 2
... identifiable igneous rocks by crystal size volcanic (crystals too small to see) – basalt plutonic (large crystals) – granite how sediment is lithified common types of sedimentary rocks: shale, sandstone, limestone identifiable sedimentary rocks – sandstone, shell limestone what is metamorphism w ...
... identifiable igneous rocks by crystal size volcanic (crystals too small to see) – basalt plutonic (large crystals) – granite how sediment is lithified common types of sedimentary rocks: shale, sandstone, limestone identifiable sedimentary rocks – sandstone, shell limestone what is metamorphism w ...
Webelos Earth Rocks Appalachian Geology Booklet
... Department of Geology * www.mckinneymuseum.appstate.edu * Appalachian State University (Boone, NC) ...
... Department of Geology * www.mckinneymuseum.appstate.edu * Appalachian State University (Boone, NC) ...
Classification of magmatic rocks
... They were probably fed from below by dykes, tapping the magma into the pluton. These dykes are not always seen in the field (probably sealed by tectonics afterwards). The plutons therefore “inflate” in situ, not unlike an inflating balloon… The problem is, the pressure in the magma is probably not s ...
... They were probably fed from below by dykes, tapping the magma into the pluton. These dykes are not always seen in the field (probably sealed by tectonics afterwards). The plutons therefore “inflate” in situ, not unlike an inflating balloon… The problem is, the pressure in the magma is probably not s ...
GCSE GEOLOGY REVISION WORK BOOKLET Part 1 Contents
... velocity ceases. Very fine grained muds settle out on top (rained down). Gives fining up sequence typical of greywackes. ...
... velocity ceases. Very fine grained muds settle out on top (rained down). Gives fining up sequence typical of greywackes. ...
8.4 Plate Movement and Continental Growth
... been moved, often over distances of thousands of kilometers and attached to the edge of a continent. Terranes are: -bounded on all sides by major faults -the rocks and fossils do not match with the neighboring ...
... been moved, often over distances of thousands of kilometers and attached to the edge of a continent. Terranes are: -bounded on all sides by major faults -the rocks and fossils do not match with the neighboring ...
Physical Geology Practice Midterm Exam 1. Which of the following
... 59. Which of the following statements about felsic igneous rocks is true? A) Felsic rocks contain less silica than mafic rocks. B) Felsic rocks crystallize at lower temperatures than mafic rocks. C) Felsic rocks tend to be darker colored than mafic rocks. D) Felsic rocks tend to be finer grained tha ...
... 59. Which of the following statements about felsic igneous rocks is true? A) Felsic rocks contain less silica than mafic rocks. B) Felsic rocks crystallize at lower temperatures than mafic rocks. C) Felsic rocks tend to be darker colored than mafic rocks. D) Felsic rocks tend to be finer grained tha ...
2007 Exam 1 - MSU Billings
... A) They formed after all the gas had been used up. B) They are so cold that all their gases have frozen into deposits below their surface. C) They formed before the solar nebula had captured any gas. D) They are so small that their gravity is too weak to retain an atmosphere. 2. Felsic rocks … A) ar ...
... A) They formed after all the gas had been used up. B) They are so cold that all their gases have frozen into deposits below their surface. C) They formed before the solar nebula had captured any gas. D) They are so small that their gravity is too weak to retain an atmosphere. 2. Felsic rocks … A) ar ...
Metamorphic Rocks
... the rock have changed. All three types of rock can be changed by heat, pressure, or a combination of both. A rock’s texture or mineral composition can change when its surroundings change. If the temperature of pressure of the new environment is different from the one in which the rock formed, the ro ...
... the rock have changed. All three types of rock can be changed by heat, pressure, or a combination of both. A rock’s texture or mineral composition can change when its surroundings change. If the temperature of pressure of the new environment is different from the one in which the rock formed, the ro ...
Metamorphic Rocks ppt
... the rock have changed. All three types of rock can be changed by heat, pressure, or a combination of both. A rock’s texture or mineral composition can change when its surroundings change. If the temperature of pressure of the new environment is different from the one in which the rock formed, the ro ...
... the rock have changed. All three types of rock can be changed by heat, pressure, or a combination of both. A rock’s texture or mineral composition can change when its surroundings change. If the temperature of pressure of the new environment is different from the one in which the rock formed, the ro ...
scimod_32 CC 1
... Rock, small folds provide evidence of extreme pressure and metamorphism. Further east, in the heart of the Green Mountains, more evidence of this enormous pressure exists. But most of it is buried. Some of the most intensely metamorphosed rock occurs within the central cores of mountains. KLEPEIS: N ...
... Rock, small folds provide evidence of extreme pressure and metamorphism. Further east, in the heart of the Green Mountains, more evidence of this enormous pressure exists. But most of it is buried. Some of the most intensely metamorphosed rock occurs within the central cores of mountains. KLEPEIS: N ...
The Geology of the Cabo de Gata area.
... During a quiescent period, when the sea was 200m higher relative to the land, shallow-water limestones were deposited in places around the volcanoes. Small pockets of these cream-coloured fossiliferous limestones, containing corals and shells, can be seen high on the mountain sides at this level, a ...
... During a quiescent period, when the sea was 200m higher relative to the land, shallow-water limestones were deposited in places around the volcanoes. Small pockets of these cream-coloured fossiliferous limestones, containing corals and shells, can be seen high on the mountain sides at this level, a ...
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.