Pachamama Geography Consultants
... The denser oceanic plate is subducting beneath the less dense continental plate offshore of British Columbia, Washington, Oregon, and northern California. The North American Plate moves in a general southwest direction, overriding the oceanic plate. The Cascadia subduction zone is where the two plat ...
... The denser oceanic plate is subducting beneath the less dense continental plate offshore of British Columbia, Washington, Oregon, and northern California. The North American Plate moves in a general southwest direction, overriding the oceanic plate. The Cascadia subduction zone is where the two plat ...
Chapter 7 Summary Review
... push, and slab pull are the forces that cause plate motion. Radioactivity in the mantle and thermal energy from the core produce the energy for convection. ...
... push, and slab pull are the forces that cause plate motion. Radioactivity in the mantle and thermal energy from the core produce the energy for convection. ...
theory of Plate Tectonics ppt
... and ocean trenches. The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
... and ocean trenches. The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
A. Layers of the Earth
... Peninsula of the Soviet Union. It was drilled to a depth of about 12 kilometers (7.6 miles). ...
... Peninsula of the Soviet Union. It was drilled to a depth of about 12 kilometers (7.6 miles). ...
3rd Rock Notes 2013
... Two related ideas are widely accepted: Slab pull: Denser, colder plate sinks at subduction zone, pulls rest of plate behind it. Mantle convection: Hotter mantle material rises beneath divergent boundaries, forces the cooler material to sink at subduction zones. ...
... Two related ideas are widely accepted: Slab pull: Denser, colder plate sinks at subduction zone, pulls rest of plate behind it. Mantle convection: Hotter mantle material rises beneath divergent boundaries, forces the cooler material to sink at subduction zones. ...
Chapter 6 - Cloudfront.net
... • What is the difference between oceanic crust and continental crust? – Oceanic crust is denser (heavier) than continental crust – Ocean water is on top of the oceanic crust – Oceanic crust is made of basalt – Continental crust is made of granite ...
... • What is the difference between oceanic crust and continental crust? – Oceanic crust is denser (heavier) than continental crust – Ocean water is on top of the oceanic crust – Oceanic crust is made of basalt – Continental crust is made of granite ...
Kelsey Beechler ERTH 201 Lab East African Rift Valley Rift valleys
... magma level, the crust gets thinner. Eventually, when coupled with the spreading movement, the plate breaks, allowing oceanic crust, or new crust material, to form (Continental Rifting). The process of plates spreading is most commonly seen with oceanic plates, such as with the Mid-Atlantic spreadin ...
... magma level, the crust gets thinner. Eventually, when coupled with the spreading movement, the plate breaks, allowing oceanic crust, or new crust material, to form (Continental Rifting). The process of plates spreading is most commonly seen with oceanic plates, such as with the Mid-Atlantic spreadin ...
OUTDOOR SCIENCE SCHOOL VOC (#1 – Test)
... causes the rigid area of the crust to crack and form the lithospheric plates (b) asthenosphere – liquid, tar-like layer of the upper mantle below the lithosphere creating a convection current movement, which causes the plates to move (c) mesosphere – lower mantle, almost solid-like above the core (d ...
... causes the rigid area of the crust to crack and form the lithospheric plates (b) asthenosphere – liquid, tar-like layer of the upper mantle below the lithosphere creating a convection current movement, which causes the plates to move (c) mesosphere – lower mantle, almost solid-like above the core (d ...
Ch 8 4 Earth_s Layered Structure
... Crust – thin, rocky, outer layer of Earth; divided into oceanic and continental crust The oceanic crust is roughly 7 kilometers thick and composed of the igneous rocks basalt and gabbro The continental crust is 8-75 kilometers thick (avg. 40 km) and consists mostly of the granitic rock granodiorite ...
... Crust – thin, rocky, outer layer of Earth; divided into oceanic and continental crust The oceanic crust is roughly 7 kilometers thick and composed of the igneous rocks basalt and gabbro The continental crust is 8-75 kilometers thick (avg. 40 km) and consists mostly of the granitic rock granodiorite ...
Unit C: Earth Science Chapter 1: The Changing Earth Lesson 1
... 4. Coal deposits in North America match identical deposits in Europe 5. Discovery of warm-weather organisms in cold climates 6. Glacial deposits in warm climates Plate Tectonics 1. This is the theory of how continents move 2. The earth's surface is broken into about twenty sections or plates 3. Plat ...
... 4. Coal deposits in North America match identical deposits in Europe 5. Discovery of warm-weather organisms in cold climates 6. Glacial deposits in warm climates Plate Tectonics 1. This is the theory of how continents move 2. The earth's surface is broken into about twenty sections or plates 3. Plat ...
Key elements of Plate Tectonics
... Lithosphere consists of rigid plates (100 km average; 70 km for ocean & 150 km for continents) Plates move relative to one another by Divergence, Convergence, or Transform motion Formation of Oceanic lithosphere at divergent plate boundaries and is consumed at subduction zone Most earthquake ...
... Lithosphere consists of rigid plates (100 km average; 70 km for ocean & 150 km for continents) Plates move relative to one another by Divergence, Convergence, or Transform motion Formation of Oceanic lithosphere at divergent plate boundaries and is consumed at subduction zone Most earthquake ...
Rock and Rock Cycle Quiz Matching In the space provided, write the
... _____4. Rock Cycle Multiple Choice ...
... _____4. Rock Cycle Multiple Choice ...
PHSC 4013 Course Outline—Fall 2008
... o Rock = any solid mass of mineral or mineral-like matter that occurs naturally as part of the planet. o These are materials found on the surface of the Earth, but as one goes deeper, the mean density of these properties increases A brief overview of the internal structure of the Earth o A thin crus ...
... o Rock = any solid mass of mineral or mineral-like matter that occurs naturally as part of the planet. o These are materials found on the surface of the Earth, but as one goes deeper, the mean density of these properties increases A brief overview of the internal structure of the Earth o A thin crus ...
Earth as a planet
... BUT: There are sources of heat loss, eg hydrothermal vents at ocean ridges, so taking these into account, the output may be as high as 40 x 1012 W. ...
... BUT: There are sources of heat loss, eg hydrothermal vents at ocean ridges, so taking these into account, the output may be as high as 40 x 1012 W. ...
The Earth - Cardinal Newman High School
... sinks beneath a deep-ocean trench and back into the mantle new oceanic crust is hot coming out of ridge, but it cools as it moves away and then sinks ...
... sinks beneath a deep-ocean trench and back into the mantle new oceanic crust is hot coming out of ridge, but it cools as it moves away and then sinks ...
Lecture 2: Dynamic Earth: Plate Tectonics
... ridges and spreads laterally; and the deep-ocean trenches are the sites where the ocean crust is drawn back to the mantle. ...
... ridges and spreads laterally; and the deep-ocean trenches are the sites where the ocean crust is drawn back to the mantle. ...
Inside the Earth
... source. Because it’s cooler, it’s more dense so it sinks. It’s now closer to the heat so it all begins again! ...
... source. Because it’s cooler, it’s more dense so it sinks. It’s now closer to the heat so it all begins again! ...
Types of Rocks - Paradise Primary School
... Molten (liquid) rock forms when rocks melt. The molten rock is called magma. When the magma cools and solidifies, a type of rock called igneous rock forms. Igneous rocks contain randomly arranged interlocking crystals. The size of the crystals depends on how quickly the molten magma solidified. The ...
... Molten (liquid) rock forms when rocks melt. The molten rock is called magma. When the magma cools and solidifies, a type of rock called igneous rock forms. Igneous rocks contain randomly arranged interlocking crystals. The size of the crystals depends on how quickly the molten magma solidified. The ...
Earth Science
... http://education.nationalgeographic.com/educati on/encyclopedia/ocean-trench/?ar_a=1 ...
... http://education.nationalgeographic.com/educati on/encyclopedia/ocean-trench/?ar_a=1 ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.