Ancient crust rises from the deep
... the young planet still had too much internal heat for surface plates to have been subducted into the mantle, as they are today. “This is exciting, and there’s no doubt there’s recycling of ancient material,” says Robert Stern, a geoscientist at the University of Texas at Dallas. But he suggests that ...
... the young planet still had too much internal heat for surface plates to have been subducted into the mantle, as they are today. “This is exciting, and there’s no doubt there’s recycling of ancient material,” says Robert Stern, a geoscientist at the University of Texas at Dallas. But he suggests that ...
Section 1 - Pelham City Schools
... thickens • Rocks break & buckle – Continental plate folds into huge mountain – Oceanic plate forms trench ...
... thickens • Rocks break & buckle – Continental plate folds into huge mountain – Oceanic plate forms trench ...
Plate Tectonics - Faculty Perry, Oklahoma
... The layer in Earth’s upper mantle and directly under the lithosphere in which rock is soft and weak because it is close to melting. ...
... The layer in Earth’s upper mantle and directly under the lithosphere in which rock is soft and weak because it is close to melting. ...
Mountain Building
... • Force per unit area on a solid. • Three Main Types: – Tensional Stress – pulls apart – Compressional Stress – squeezes together – Shear Stress – pulls in opposite directions ...
... • Force per unit area on a solid. • Three Main Types: – Tensional Stress – pulls apart – Compressional Stress – squeezes together – Shear Stress – pulls in opposite directions ...
Earth`s Structure - SD43 Teacher Sites
... • Earth’s surface is covered by a thin layer of soil. If you dig down trough the soil, you will find rock. Earth’s outer layer of rock is called crust. The crust extends under the ocean and is between less then 5Km thick to 50Km thick. This is not very thick when you compare it to the center of the ...
... • Earth’s surface is covered by a thin layer of soil. If you dig down trough the soil, you will find rock. Earth’s outer layer of rock is called crust. The crust extends under the ocean and is between less then 5Km thick to 50Km thick. This is not very thick when you compare it to the center of the ...
8.1 Earth has several layers
... • Tectonic plates rest on the asthenosphere (layer of soft, hot rock) • Convection currents within Earth helps to move the plates • convection—the transfer of heat by the movement of a material • convection current—a motion that transfers heat energy to a material • Moves very slowly, a few centimet ...
... • Tectonic plates rest on the asthenosphere (layer of soft, hot rock) • Convection currents within Earth helps to move the plates • convection—the transfer of heat by the movement of a material • convection current—a motion that transfers heat energy to a material • Moves very slowly, a few centimet ...
– Circle the response that best answers the question.
... core, asthenosphere, lower mantle, lithosphere, outer core. ...
... core, asthenosphere, lower mantle, lithosphere, outer core. ...
Exam Study Guide
... substance (in graph or tabular form) along with the ratio of daughter to parent substances present in the sample. E5.3f Explain why C-14 can be used to date a 40,000 year old tree but U-Pb cannot. E5.3g Identify a sequence of geologic events using relative-age dating principles. E3.3A Explain ...
... substance (in graph or tabular form) along with the ratio of daughter to parent substances present in the sample. E5.3f Explain why C-14 can be used to date a 40,000 year old tree but U-Pb cannot. E5.3g Identify a sequence of geologic events using relative-age dating principles. E3.3A Explain ...
Afar - Do plumes exist?
... Red Sea and Gulf of Aden spreading: 30-15Ma stage one of rifting between Arabia and Africa creating the Red Sea. 10km rifting 20Ma Main period of extension. ...
... Red Sea and Gulf of Aden spreading: 30-15Ma stage one of rifting between Arabia and Africa creating the Red Sea. 10km rifting 20Ma Main period of extension. ...
GEOLOGY Test Study Guide
... ______ 1. What is the outermost layer of the Earth called?. ______ 2. What is the liquid layer of the Earth’s core called? ______ 3. In a reverse fault, where does the hanging wall move relative to the ______ 4. In a normal fault, where does the hanging wall move relative to the ______ 5. What is th ...
... ______ 1. What is the outermost layer of the Earth called?. ______ 2. What is the liquid layer of the Earth’s core called? ______ 3. In a reverse fault, where does the hanging wall move relative to the ______ 4. In a normal fault, where does the hanging wall move relative to the ______ 5. What is th ...
Earth`s Structure
... Wegener proposed hypothesis of continental drift in 1915; he was a meteorologist. He named the large landmass Pangaea, meaning “all earth”. His evidence included: fossils of Glossopteris and Mesosaurus, matching mountain chains on different continents, and similar climate changes on landmasses. ...
... Wegener proposed hypothesis of continental drift in 1915; he was a meteorologist. He named the large landmass Pangaea, meaning “all earth”. His evidence included: fossils of Glossopteris and Mesosaurus, matching mountain chains on different continents, and similar climate changes on landmasses. ...
What is isostasy? The balancing downward force of the crust and the
... How do rift valley’s form? ...
... How do rift valley’s form? ...
Plate Tectonics
... Most of the mountains in the mid-ocean ridge lie hidden under hundreds of meters of water. Hess proposed that the ocean floors move, carrying the continents along with them. The movement begins at the mid-ocean ridge. At the mid-ocean ridge, molten material rises from the mantle and erupts. ...
... Most of the mountains in the mid-ocean ridge lie hidden under hundreds of meters of water. Hess proposed that the ocean floors move, carrying the continents along with them. The movement begins at the mid-ocean ridge. At the mid-ocean ridge, molten material rises from the mantle and erupts. ...
Chapter 4
... Continents can drift apart from one another and have done so in the past Pangea Greek word meaning “All Earth” Name for the single land mass that is the separate continents of today Panthelassa Name for the single ocean of the world that is the separate oceans of the world today. Sea-Floor S ...
... Continents can drift apart from one another and have done so in the past Pangea Greek word meaning “All Earth” Name for the single land mass that is the separate continents of today Panthelassa Name for the single ocean of the world that is the separate oceans of the world today. Sea-Floor S ...
Layers of the Earth Unit 5 ES.7 The student will investigate and
... in motion (compression, tension, and shearing) with respect to one another (because of convection currents in the mantle). The core, _______________, and crust of the Earth are dynamic systems that are constantly in motion Throughout the typical human lifespan the Earth’s surface appears to remain r ...
... in motion (compression, tension, and shearing) with respect to one another (because of convection currents in the mantle). The core, _______________, and crust of the Earth are dynamic systems that are constantly in motion Throughout the typical human lifespan the Earth’s surface appears to remain r ...
PANGAEAPOWERPOINT
... pieces of a puzzle…..the shapes of the coastlines of Africa and South America are a good example. As you discovered through your modeling activity, they once fit together. The Earth as we see it was not always like it is today. Land masses have been pulled apart and joined together by the process we ...
... pieces of a puzzle…..the shapes of the coastlines of Africa and South America are a good example. As you discovered through your modeling activity, they once fit together. The Earth as we see it was not always like it is today. Land masses have been pulled apart and joined together by the process we ...
Answer Key - Scioly.org
... lithosphere of a given age (and therefore contracted to a given depth) will still be close to the ridge, so the slope will be steep (2). In a fast spreading ridge like the East Pacific rise, lithosphere of that same age and depth will be much further away, producing a gentle slope away from the rid ...
... lithosphere of a given age (and therefore contracted to a given depth) will still be close to the ridge, so the slope will be steep (2). In a fast spreading ridge like the East Pacific rise, lithosphere of that same age and depth will be much further away, producing a gentle slope away from the rid ...
Structure of the Earth
... Glacial deposits – grooved marks in bedrock found in SA, Africa, India, and Australia - must have been covered with glaciers at one time near south pole ...
... Glacial deposits – grooved marks in bedrock found in SA, Africa, India, and Australia - must have been covered with glaciers at one time near south pole ...
Biogeochemical_Cycles_PPT
... • There is floating ice in the form of icebergs, ice shelves, and Arctic Sea ice.. • And continental ice in the form of glaciers and ice sheets found in Greenland and Antarctica… • What would be more detrimental to our coastlines, melting floating ice or melting continental ice? ...
... • There is floating ice in the form of icebergs, ice shelves, and Arctic Sea ice.. • And continental ice in the form of glaciers and ice sheets found in Greenland and Antarctica… • What would be more detrimental to our coastlines, melting floating ice or melting continental ice? ...
Power Point - Fort Bend ISD
... earth’s surface -broken into more than a dozen slabs of rock called plates that rest on layer of the upper mantle -these plates carry earth’s oceans & continents ...
... earth’s surface -broken into more than a dozen slabs of rock called plates that rest on layer of the upper mantle -these plates carry earth’s oceans & continents ...
Name:
... is about 100 km thick and includes the entire ______________ and the uppermost portion of the ______________ (Figure 23.7). 17. Unlike the asthenosphere, the lithosphere is relatively ____________ and _____________ and resists deformation, instead of flowing. 18. The lithosphere is, in a sense, floa ...
... is about 100 km thick and includes the entire ______________ and the uppermost portion of the ______________ (Figure 23.7). 17. Unlike the asthenosphere, the lithosphere is relatively ____________ and _____________ and resists deformation, instead of flowing. 18. The lithosphere is, in a sense, floa ...
10 UPLIFT, EROSION AND ROCK DEFORMATION
... Ota and Omura, above). For example, an extensive region of the Pacific coast of SW Honshu, Shikoku and Kyushu experiences a progressive and high uplift rate up to 5-6 mm/year, but this can be counteracted by coseismic subsidence during major plate boundary earthquakes. In the 1946 Nankaido earthquak ...
... Ota and Omura, above). For example, an extensive region of the Pacific coast of SW Honshu, Shikoku and Kyushu experiences a progressive and high uplift rate up to 5-6 mm/year, but this can be counteracted by coseismic subsidence during major plate boundary earthquakes. In the 1946 Nankaido earthquak ...
- bYTEBoss
... It is the largest single mass of ice on Earth and is bigger than the whole of Europe. At least 3 million years old (and as much as 30 million years old in places) The ice sheet averages 2,450 metres deep and holds about 70% of the world’s fresh water. The average altitude is about 2,300 metres above ...
... It is the largest single mass of ice on Earth and is bigger than the whole of Europe. At least 3 million years old (and as much as 30 million years old in places) The ice sheet averages 2,450 metres deep and holds about 70% of the world’s fresh water. The average altitude is about 2,300 metres above ...
Post-glacial rebound
Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.