Chapter 4 Assignment GEarthOL
... #9: Which United States’ location has the greatest magnetic inclination value (that is, closest to vertical)? a) Anchorage, Alaska b) New York, New York c) Miami, Florida d) Imperial, California Checkpoint 4.11, p. 92 #7: Inclination is determined for three lava flows preserved in a cliff as shown ...
... #9: Which United States’ location has the greatest magnetic inclination value (that is, closest to vertical)? a) Anchorage, Alaska b) New York, New York c) Miami, Florida d) Imperial, California Checkpoint 4.11, p. 92 #7: Inclination is determined for three lava flows preserved in a cliff as shown ...
isostasy - UMSL.edu
... The process by which the Lithospheric plates, which are "floating" on the Mantle, adjust vertically to achieve an equilibrium (the crust and upper mantle have a uniform density.) Because Oceanic Crust has a higher density than Continental Crust, it adjusts lower into the Mantle. This condition is au ...
... The process by which the Lithospheric plates, which are "floating" on the Mantle, adjust vertically to achieve an equilibrium (the crust and upper mantle have a uniform density.) Because Oceanic Crust has a higher density than Continental Crust, it adjusts lower into the Mantle. This condition is au ...
PowerPoint slides
... Drift theory made sense of: 1) seafloor features (trenches, midocean ridges) 2) peculiar ages of seafloor rocks (young compared to continents; young near ridges, oldest near trenches) 3) odd heat flow patterns (high near ridges, low near trenches) ...
... Drift theory made sense of: 1) seafloor features (trenches, midocean ridges) 2) peculiar ages of seafloor rocks (young compared to continents; young near ridges, oldest near trenches) 3) odd heat flow patterns (high near ridges, low near trenches) ...
Plate Tectonics - Cloudfront.net
... • Location of Earthquakes and Volcanoes (p173) • Magnetism of the ocean floor (p174) • Age of the ocean floor (p175) ...
... • Location of Earthquakes and Volcanoes (p173) • Magnetism of the ocean floor (p174) • Age of the ocean floor (p175) ...
Sea-Floor Spreading and Plate Tectonics 5-4 Sea
... Explain how rocks on the ocean floor can be much younger than continental rocks ...
... Explain how rocks on the ocean floor can be much younger than continental rocks ...
Deep ocean floor sediment
... older rocks lying to their north. It is a major structural plane discernible throughout the length of the Himalayas 6 ) Accretionary wedge or accretionary prism: Formed from sediments that are accreted onto the non-subducting tectonic plate at a convergent plate boundary. Most of the material in the ...
... older rocks lying to their north. It is a major structural plane discernible throughout the length of the Himalayas 6 ) Accretionary wedge or accretionary prism: Formed from sediments that are accreted onto the non-subducting tectonic plate at a convergent plate boundary. Most of the material in the ...
Lecture 7 Plates and Plumes September 27th
... Deep oceanic Trenches Earthquake Zones 1) Along ocean ridges (shallow) 2) Associated with ocean trenches (deep – Benioff zone) 3) Where plates slide past each other (shallow, transform faults) ...
... Deep oceanic Trenches Earthquake Zones 1) Along ocean ridges (shallow) 2) Associated with ocean trenches (deep – Benioff zone) 3) Where plates slide past each other (shallow, transform faults) ...
Chapter 9 WS #2
... B. stalled convergent boundary. C. intraplate hot spot. D. extinct volcano. 39. The best possible explanation for the driving force for plate movement is A. convection in the asthenosphere. B. convection deep in the mantle. C. the downward pull of gravity on down-going slabs of lithosphere in subduc ...
... B. stalled convergent boundary. C. intraplate hot spot. D. extinct volcano. 39. The best possible explanation for the driving force for plate movement is A. convection in the asthenosphere. B. convection deep in the mantle. C. the downward pull of gravity on down-going slabs of lithosphere in subduc ...
Task to i) Explain how continental drift works to move tectonic plates
... the liquid outer core and the solid inner core. ...
... the liquid outer core and the solid inner core. ...
Causes of Volcanoes
... how do we get liquid- really liquidmagma / lava? Two ways to melt the solid mantle… ...
... how do we get liquid- really liquidmagma / lava? Two ways to melt the solid mantle… ...
Study Guide: Plate Tectonics Test
... 8. What proof do scientist have that Sea Floor Spreading happens? a. “Pillow Lava,” rock found on the ocean floor, in the rift zones of the mid ocean ridges. A Rift zone is the valley between the two ridges where the sea floor spreads apart and magma from the mantle is forming new ocean floor. b. Dr ...
... 8. What proof do scientist have that Sea Floor Spreading happens? a. “Pillow Lava,” rock found on the ocean floor, in the rift zones of the mid ocean ridges. A Rift zone is the valley between the two ridges where the sea floor spreads apart and magma from the mantle is forming new ocean floor. b. Dr ...
The theory of Plate Tectonics Plate Boundaries
... ● A divergent boundary occurs where two plates divide ...
... ● A divergent boundary occurs where two plates divide ...
Physical Geology - Geol 1330 (07610) - Spring
... a) thinner and hotter b) thicker and hotter c) thinner and colder d) thicker and colder 40. If two oceanic plates collide which one will subduct? a) the younger and hotter one b) the older and colder one 41. What does the Wadati-Benioff earthquake zone, which shows earthquakes down to ~600 km depth, ...
... a) thinner and hotter b) thicker and hotter c) thinner and colder d) thicker and colder 40. If two oceanic plates collide which one will subduct? a) the younger and hotter one b) the older and colder one 41. What does the Wadati-Benioff earthquake zone, which shows earthquakes down to ~600 km depth, ...
8. Earth`s Moving Plates
... Cracks in the Earth's Crust The solid crust acts as a heat insulator for the hot interior of the earth. Below the crust, in the mantle, is the molten material called magma. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. Periodically it rises to the ...
... Cracks in the Earth's Crust The solid crust acts as a heat insulator for the hot interior of the earth. Below the crust, in the mantle, is the molten material called magma. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. Periodically it rises to the ...
Identifying Plate Tectonics Lab 1-34
... When Southern California and Baja California finally break away from North America, will they (the land) sink below sea level? Why or why not? (Hint: Discuss the layers of the Earth: lithosphere/crust, mantle.) ...
... When Southern California and Baja California finally break away from North America, will they (the land) sink below sea level? Why or why not? (Hint: Discuss the layers of the Earth: lithosphere/crust, mantle.) ...
continental shelf
... • There are three types of lithospheric plate boundaries: divergent (where lithosphere and oceanic crust is created at mid-ocean ridges), convergent (where one lithospheric plate sinks beneath another and returns to the mantle), and transform (where two lithospheric plates slide past each other). ...
... • There are three types of lithospheric plate boundaries: divergent (where lithosphere and oceanic crust is created at mid-ocean ridges), convergent (where one lithospheric plate sinks beneath another and returns to the mantle), and transform (where two lithospheric plates slide past each other). ...
1 - Scioly.org
... In the diagram above, the oceanic crust is forced under the continental crust because ___________. (A) the basaltic oceanic crust is older than the granitic continental crust (B) the granitic oceanic crust is more dense than the basaltic continental crust (C) the basaltic oceanic crust is more dense ...
... In the diagram above, the oceanic crust is forced under the continental crust because ___________. (A) the basaltic oceanic crust is older than the granitic continental crust (B) the granitic oceanic crust is more dense than the basaltic continental crust (C) the basaltic oceanic crust is more dense ...
Physical Geology
... • Where plates move toward each other, oceanic crust and the underlying lithosphere is subducted beneath the other plate (with either oceanic crust or continental crust) • Wet crust is partially melted to form silicic (Silicarich, iron-poor, i.e., granitic) magma ...
... • Where plates move toward each other, oceanic crust and the underlying lithosphere is subducted beneath the other plate (with either oceanic crust or continental crust) • Wet crust is partially melted to form silicic (Silicarich, iron-poor, i.e., granitic) magma ...
Mountain Formation
... Terranes can contain anything from sediment off the ocean floor to volcanic island arcs The newly added material increases the width and thickness of the continental crust The accretion of larger crustal fragments, such as a mature island arc (Hawaii), may result in a mountain range Because ...
... Terranes can contain anything from sediment off the ocean floor to volcanic island arcs The newly added material increases the width and thickness of the continental crust The accretion of larger crustal fragments, such as a mature island arc (Hawaii), may result in a mountain range Because ...
1. What evidence did Alfred Wagner use to support his theory of
... 7. Give an example of a location on Earth where each type of convergent plate boundaries occurs. ...
... 7. Give an example of a location on Earth where each type of convergent plate boundaries occurs. ...
Presentation
... The less dense ocean plate is forced down into the mantle forming a deep ocean trench that sinks & melts Magma & gas push through the ocean floor forming a chain volcanoes If volcanoes become large enough it rises above sea level & makes a volcanic island arc ...
... The less dense ocean plate is forced down into the mantle forming a deep ocean trench that sinks & melts Magma & gas push through the ocean floor forming a chain volcanoes If volcanoes become large enough it rises above sea level & makes a volcanic island arc ...
Exploring the Geosphere and its Processes Name__________________________________
... Under the Other? ...
... Under the Other? ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.