Causes of Plate Tectonics
... – The denser oceanic plates sink under less _____________ continental plates – The area where the ocean plate moves down is called a __________________ – This type of convergent boundary forms a _________________________ Plates moving together- convergent boundaries ...
... – The denser oceanic plates sink under less _____________ continental plates – The area where the ocean plate moves down is called a __________________ – This type of convergent boundary forms a _________________________ Plates moving together- convergent boundaries ...
Chapter08 plate techtonics
... Later discoveries ___________ the idea that the continents had been __________, but demonstrated that the continents were not “drifting” but attached to moving _________, or __________, plates. The theory of plate tectonics explains the occurrence of _________ and __________ in concentrated belts al ...
... Later discoveries ___________ the idea that the continents had been __________, but demonstrated that the continents were not “drifting” but attached to moving _________, or __________, plates. The theory of plate tectonics explains the occurrence of _________ and __________ in concentrated belts al ...
PP5-AbbeyNaji - Stout Middle School
... The difference between oceanic crust and the oceanic lithosphere is the oceanic crust is found on the ocean floor and the oceanic lithosphere is deeper into Earth. ...
... The difference between oceanic crust and the oceanic lithosphere is the oceanic crust is found on the ocean floor and the oceanic lithosphere is deeper into Earth. ...
Plate Boundaries
... A oceanic-continental collision occurs when an oceanic plate collides with a continental plate. Since the oceanic plate has a greater density, it sinks or subducts below. This forms ocean trenches, coastal mountains & volcanoes. The Cascade Mountains on the west coast are examples… ...
... A oceanic-continental collision occurs when an oceanic plate collides with a continental plate. Since the oceanic plate has a greater density, it sinks or subducts below. This forms ocean trenches, coastal mountains & volcanoes. The Cascade Mountains on the west coast are examples… ...
Pub-2010 - Caltech GPS
... subduction zones present today (VAN HUNEN et al., 2002). The global variation of slab dips is shown in Fig. 1. Present day zones of shallow subduction include the Nankai trough of Japan, northern and southern Peru, Central Chile, East Aleutians in Alaska, and Mexico. A number of these are coincident ...
... subduction zones present today (VAN HUNEN et al., 2002). The global variation of slab dips is shown in Fig. 1. Present day zones of shallow subduction include the Nankai trough of Japan, northern and southern Peru, Central Chile, East Aleutians in Alaska, and Mexico. A number of these are coincident ...
An Evaluation of Proposed Mechanisms of Slab Flattening in Central
... subduction zones present today (VAN HUNEN et al., 2002). The global variation of slab dips is shown in Fig. 1. Present day zones of shallow subduction include the Nankai trough of Japan, northern and southern Peru, Central Chile, East Aleutians in Alaska, and Mexico. A number of these are coincident ...
... subduction zones present today (VAN HUNEN et al., 2002). The global variation of slab dips is shown in Fig. 1. Present day zones of shallow subduction include the Nankai trough of Japan, northern and southern Peru, Central Chile, East Aleutians in Alaska, and Mexico. A number of these are coincident ...
Slide 1
... • one plate moves under the other – ocean-ocean » deep sea trenches » island arcs – ocean-continent » coastal volcanoes – Collision Boundary • plates push against each other form mtns – continent-continent » Himalays Updated ...
... • one plate moves under the other – ocean-ocean » deep sea trenches » island arcs – ocean-continent » coastal volcanoes – Collision Boundary • plates push against each other form mtns – continent-continent » Himalays Updated ...
copy all questions - Catawba County Schools
... 13. Explain how new ocean floor is created. Divergent boundaries in the middle of the ocean contribute to seafloor spreading. As plates made of oceanic crust pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ...
... 13. Explain how new ocean floor is created. Divergent boundaries in the middle of the ocean contribute to seafloor spreading. As plates made of oceanic crust pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ...
Introduction to Oceanography 112
... (motion against gravity) driven by differences in temperature where hot material lies below cooler material. This condition exists inside the Earth where it tends to be hotter at greater depths. Circle statements that are true about our current understanding of mantle convection and the diagram cite ...
... (motion against gravity) driven by differences in temperature where hot material lies below cooler material. This condition exists inside the Earth where it tends to be hotter at greater depths. Circle statements that are true about our current understanding of mantle convection and the diagram cite ...
Faulting and hydration of the Juan de Fuca plate system
... oceanic plate is primarily limited to approximately Moho depths, fault-controlled hydration appears to be largely restricted to crustal levels. If dehydration embrittlement is an important mechanism for triggering intermediate-depth earthquakes within the subducting slab, then the limited occurrence ...
... oceanic plate is primarily limited to approximately Moho depths, fault-controlled hydration appears to be largely restricted to crustal levels. If dehydration embrittlement is an important mechanism for triggering intermediate-depth earthquakes within the subducting slab, then the limited occurrence ...
Faulting and hydration of the Juan de Fuca plate system
... oceanic plate is primarily limited to approximately Moho depths, fault-controlled hydration appears to be largely restricted to crustal levels. If dehydration embrittlement is an important mechanism for triggering intermediate-depth earthquakes within the subducting slab, then the limited occurrence ...
... oceanic plate is primarily limited to approximately Moho depths, fault-controlled hydration appears to be largely restricted to crustal levels. If dehydration embrittlement is an important mechanism for triggering intermediate-depth earthquakes within the subducting slab, then the limited occurrence ...
Power Point Presentation
... magnetic signal recorded in crust at spreading center as it’s formed, forms bands of crust with either a weak or strong magnetic signal ...
... magnetic signal recorded in crust at spreading center as it’s formed, forms bands of crust with either a weak or strong magnetic signal ...
Discuss on Sea Floor Evidence Submitted by WWW
... As the hot mantle rock ascends toward a midoceanic ridge, it cools and starts to move laterally away from the ridge. This mantle movement drags the overlying oceanic crust along with it. The mantle material continues to cool, and eventually begins to sink. At this point, the oceanic crust begins to ...
... As the hot mantle rock ascends toward a midoceanic ridge, it cools and starts to move laterally away from the ridge. This mantle movement drags the overlying oceanic crust along with it. The mantle material continues to cool, and eventually begins to sink. At this point, the oceanic crust begins to ...
Part B Continental Drift Slide Show
... A. Mid Ocean Convergence Zone: Oceanic Crust to Oceanic Crust. ...
... A. Mid Ocean Convergence Zone: Oceanic Crust to Oceanic Crust. ...
Plate Tectonics: The Mechanism
... Indonesia, Solomons, New Hebrides, and the Tongas, are some examples.. These "Island arcs" are usually situated along deep sea trenches and are situated on the continental side of the trench. These observations, along with many other studies of our planet, support the theory that underneath the Eart ...
... Indonesia, Solomons, New Hebrides, and the Tongas, are some examples.. These "Island arcs" are usually situated along deep sea trenches and are situated on the continental side of the trench. These observations, along with many other studies of our planet, support the theory that underneath the Eart ...
Plate Boundaries
... c. In areas where plates are moving apart Yes - When plates move apart it is due to magma reaching the surface. When magma cools new land is formed. ...
... c. In areas where plates are moving apart Yes - When plates move apart it is due to magma reaching the surface. When magma cools new land is formed. ...
The Theory of Plate Tectonics
... been dropped. The pieces of Earth’s surface are called plates. Plates carry continents, ocean floors, or both. • The theory of plate tectonics (tek TAHN iks) says that Earth’s plates move because of convection currents in the mantle. Currents in the mantle carry plates on Earth’s surface, like curre ...
... been dropped. The pieces of Earth’s surface are called plates. Plates carry continents, ocean floors, or both. • The theory of plate tectonics (tek TAHN iks) says that Earth’s plates move because of convection currents in the mantle. Currents in the mantle carry plates on Earth’s surface, like curre ...
Sonar and the beginning of seafloor spreading
... Seafloor spreading and other tectonic activity processes are the result of mantle convection. Mantle convection is the slow, churning motion of Earths mantle. Convection currents carry heat from the lover mantle and core to the lithosphere. Convection currents also “recycle” lithospheric materials b ...
... Seafloor spreading and other tectonic activity processes are the result of mantle convection. Mantle convection is the slow, churning motion of Earths mantle. Convection currents carry heat from the lover mantle and core to the lithosphere. Convection currents also “recycle” lithospheric materials b ...
Pre/Co-Requisite Challenge for Field Courses
... the field course to discuss preparing for the quiz and registering for the class. It is encouraged that the student meet with a geology tutor for an hour or two, in order to be introduced to ...
... the field course to discuss preparing for the quiz and registering for the class. It is encouraged that the student meet with a geology tutor for an hour or two, in order to be introduced to ...
Interactive Plate Tectonics - Fredericksburg City Schools
... plates are constantly moving — very slowly — around the planet, but in many different directions. Some are moving toward each other, some are moving apart, and some are sliding past each other. Because of these differences, tectonic plate boundaries are grouped into __________ main types. ...
... plates are constantly moving — very slowly — around the planet, but in many different directions. Some are moving toward each other, some are moving apart, and some are sliding past each other. Because of these differences, tectonic plate boundaries are grouped into __________ main types. ...
Plate Tectonics - Ms. Hilgefort`s Science Classroom
... but one is older Older plate goes under the other (subduction) ...
... but one is older Older plate goes under the other (subduction) ...
Wegener - Course World
... rocks, circulated in convection cells, circular movements from the core to the crust and back again. According to his hypothesis, molten material was forced upward until it oozed out at the location of the oceanic ridges and then descended downwards as it cooled near the edges of the continents. As ...
... rocks, circulated in convection cells, circular movements from the core to the crust and back again. According to his hypothesis, molten material was forced upward until it oozed out at the location of the oceanic ridges and then descended downwards as it cooled near the edges of the continents. As ...
unraveling the formation of continental crust : a review and outlook
... The formation of the juvenile basaltic island arcs and plateaus gradually increased the basalt-weathering products present. In particular, clays and quartz-enriched sediments were deposited across the seafloor, accumulating at the marginal shelves and slopes of island arcs and plateaus. Since the ju ...
... The formation of the juvenile basaltic island arcs and plateaus gradually increased the basalt-weathering products present. In particular, clays and quartz-enriched sediments were deposited across the seafloor, accumulating at the marginal shelves and slopes of island arcs and plateaus. Since the ju ...
Tectonic erosion along the Japan and Peru convergent margins
... margins of the Atlantic (compare Wernicke and Burchfiel, 1982; Beach and others, 1987; Sibuet and others, 1987). Boillot and others (1987) have advanced a simple shear interpretation of the seismic reflection data and results from deep ocean drilling along the Galicia margin where half-graben blocks ...
... margins of the Atlantic (compare Wernicke and Burchfiel, 1982; Beach and others, 1987; Sibuet and others, 1987). Boillot and others (1987) have advanced a simple shear interpretation of the seismic reflection data and results from deep ocean drilling along the Galicia margin where half-graben blocks ...
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.