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... LG # 8 Earthquakes, Volcanoes, and Mountains Building Board Builder LG # 8: I can connect major geological events to the movement of the tectonic plates. ...
... LG # 8 Earthquakes, Volcanoes, and Mountains Building Board Builder LG # 8: I can connect major geological events to the movement of the tectonic plates. ...
Tectonic History - Illinois State Geological Survey
... collide with one another. Where plates collide, compressional stresses tend to deform the plate margins, forming mountain ranges. Geological structures situated within plate interiors, far from the margins, are subject to reactivation during plate collisions. The far-field effects of the compression ...
... collide with one another. Where plates collide, compressional stresses tend to deform the plate margins, forming mountain ranges. Geological structures situated within plate interiors, far from the margins, are subject to reactivation during plate collisions. The far-field effects of the compression ...
Ocean-Continent Convergent Plate Boundaries Quiz
... Both are made when two plates collide. Mountain building can be made by two continental crust colliding with each other creating a mountain. Volcanic mountains are made by subduction when an oceanic plate collides with a continental plate. ...
... Both are made when two plates collide. Mountain building can be made by two continental crust colliding with each other creating a mountain. Volcanic mountains are made by subduction when an oceanic plate collides with a continental plate. ...
SUBDUCTION
... • Convection in the asthenosphere drives the lithosphere and crust as rigid blocks or PLATES around the surface of the earth. • Lithosphere (and oceanic crust) descend back into the mantle at the oceanic trenches. These are called Subduction Zones. ...
... • Convection in the asthenosphere drives the lithosphere and crust as rigid blocks or PLATES around the surface of the earth. • Lithosphere (and oceanic crust) descend back into the mantle at the oceanic trenches. These are called Subduction Zones. ...
1 Mountains and Mountain Ranges
... when a plate carrying oceanic crust converged with a plate carrying continental crust, followed by a continent–continent collision. Pictured here is Lamoshe, in china’s Sichuan Province. By 90 million years ago, the trench and region of igneous activity had both migrated eastward. Old volcanoes beca ...
... when a plate carrying oceanic crust converged with a plate carrying continental crust, followed by a continent–continent collision. Pictured here is Lamoshe, in china’s Sichuan Province. By 90 million years ago, the trench and region of igneous activity had both migrated eastward. Old volcanoes beca ...
Nugget
... volcanic successions. Ongoing Ar-Ar geochronology of lavas will further constrain depositional ages. ...
... volcanic successions. Ongoing Ar-Ar geochronology of lavas will further constrain depositional ages. ...
Words to know
... Asthenosphere—the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick. Basalt— a hard, black volcanic rock with less than about 52 weight percent silica (SiO2) and high amounts of heavy elements like iron and magnesium and low sod ...
... Asthenosphere—the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick. Basalt— a hard, black volcanic rock with less than about 52 weight percent silica (SiO2) and high amounts of heavy elements like iron and magnesium and low sod ...
Lower arc crust– A review of some important
... What is deep crust • Arc crust can be <20 to >70 km thick, depending on the type and age of the arc; therefore lower crust is a different target from one researcher to another; • The deep crust is the area where petrologic vestiges of mantle-derived melt are abundant and their diversification, seg ...
... What is deep crust • Arc crust can be <20 to >70 km thick, depending on the type and age of the arc; therefore lower crust is a different target from one researcher to another; • The deep crust is the area where petrologic vestiges of mantle-derived melt are abundant and their diversification, seg ...
mantle
... Asthenosphere—the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick. Basalt— a hard, black volcanic rock with less than about 52 weight percent silica (SiO2) and high amounts of heavy elements like iron and magnesium and low sod ...
... Asthenosphere—the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick. Basalt— a hard, black volcanic rock with less than about 52 weight percent silica (SiO2) and high amounts of heavy elements like iron and magnesium and low sod ...
Quiz 4: Transform faults and Polar Wander (Ch. 4
... 1. Typical magnetic stripes on the seafloor may be about 10-20 km wide. What factors control this width? spreading rate, duration of magnetic field stability or frequency of reversals ...
... 1. Typical magnetic stripes on the seafloor may be about 10-20 km wide. What factors control this width? spreading rate, duration of magnetic field stability or frequency of reversals ...
Geology of Washington
... forced onto the North American plate around Spokane • These islands are welded on, and end about where Twisp and the Methow valley is today ...
... forced onto the North American plate around Spokane • These islands are welded on, and end about where Twisp and the Methow valley is today ...
Plate Tectonics 2 ppt
... boundaries link other types of plate boundaries, like two spreading centers or a spreading center with a subduction zone 03.07.d1 ...
... boundaries link other types of plate boundaries, like two spreading centers or a spreading center with a subduction zone 03.07.d1 ...
Chapter Questions
... subducting oceanic plate (might include pieces of ocean lithosphere as well), and 2) sediment that erodes off the volcanic arc behind the subduction zone (land). This thick sequence of sediment is folded and compressed between the trench and the volcanic arc, often creating compressional mountain ra ...
... subducting oceanic plate (might include pieces of ocean lithosphere as well), and 2) sediment that erodes off the volcanic arc behind the subduction zone (land). This thick sequence of sediment is folded and compressed between the trench and the volcanic arc, often creating compressional mountain ra ...
Earth System - Plate Tectonics
... Based on the current position of the continents, in what general direction did South America drift away Plate Tectonics Quiz from Name:Pangaea? Date: a. East Class: b. West c. North d. South 2. What evidence did Alfred Wegener use to support his theory of continental drift? a. Fossil discoveries b. ...
... Based on the current position of the continents, in what general direction did South America drift away Plate Tectonics Quiz from Name:Pangaea? Date: a. East Class: b. West c. North d. South 2. What evidence did Alfred Wegener use to support his theory of continental drift? a. Fossil discoveries b. ...
Motion of Bering Plate?
... North America for Andreanof region • Pink numbers are the percent of unit coupling for each fault plane ...
... North America for Andreanof region • Pink numbers are the percent of unit coupling for each fault plane ...
Name: Class: Date: Convergent Boundaries (All answers must be in
... kind of lithosphere involved. Convergence can occur between an oceanic and a largely continental plate, or between two largely oceanic plates, or between two largely continental plates. Oceanic-continental convergence If by magic we could pull a plug and drain the Pacific Ocean, we would see a most ...
... kind of lithosphere involved. Convergence can occur between an oceanic and a largely continental plate, or between two largely oceanic plates, or between two largely continental plates. Oceanic-continental convergence If by magic we could pull a plug and drain the Pacific Ocean, we would see a most ...
example from the Australian plate
... Notice that in this model, the Timor Trough is not the plate boundary, But a fordeep on the Australian margin. The polarity of subduction has flipped and the next scenario is an Andean margin along northern Australia! ...
... Notice that in this model, the Timor Trough is not the plate boundary, But a fordeep on the Australian margin. The polarity of subduction has flipped and the next scenario is an Andean margin along northern Australia! ...
Andean margin
... The maturity of an orogenic belt will vary along strike. This is well illustrated by the collision of Gondwana terrains with Eurasia. (1) Makran - Andean margin (2) Himalaya - mature continental collision (3) N-Australian margin - transition from intra oceanic to arc-continent collision Where the ar ...
... The maturity of an orogenic belt will vary along strike. This is well illustrated by the collision of Gondwana terrains with Eurasia. (1) Makran - Andean margin (2) Himalaya - mature continental collision (3) N-Australian margin - transition from intra oceanic to arc-continent collision Where the ar ...
landforms associated with plate boundary activity
... The U.S. commonwealth of the Northern Mariana Islands—made up of 14 islands that span 183 square miles (475 square kilometers) in the North Pacific Ocean—was designated the U.S. Mariana Trench Marine National Monument in January 2009. Formed by underwater volcanoes, the southernmost of these islands ...
... The U.S. commonwealth of the Northern Mariana Islands—made up of 14 islands that span 183 square miles (475 square kilometers) in the North Pacific Ocean—was designated the U.S. Mariana Trench Marine National Monument in January 2009. Formed by underwater volcanoes, the southernmost of these islands ...
Reconstruction of subducted oceanic crust based on accreted
... complex) of the Idonnappu Zone as a dismembered ophiolite. The partly preserved volcano-sedimentary sequence, in which andesitic volcanics are overlain by radiolarian chert, suggests that they originated from intraoceanic remnant arc such as the present-day Kyushu-Palau Ridge. History of subducted o ...
... complex) of the Idonnappu Zone as a dismembered ophiolite. The partly preserved volcano-sedimentary sequence, in which andesitic volcanics are overlain by radiolarian chert, suggests that they originated from intraoceanic remnant arc such as the present-day Kyushu-Palau Ridge. History of subducted o ...
Lesson 6 - Earth Formation
... The lithosphere is composed of the crust and the upper part of the mantle. The lithosphere is divided into several layers of slow moving plates. New crustal rock forms at the “diverging” lithospheric plate boundaries. Old crustal rock melts at a subduction zone (...area where one plate plunges ...
... The lithosphere is composed of the crust and the upper part of the mantle. The lithosphere is divided into several layers of slow moving plates. New crustal rock forms at the “diverging” lithospheric plate boundaries. Old crustal rock melts at a subduction zone (...area where one plate plunges ...
Appalachian Mountain Building
... a subduction zone and a volcanic island arc east of ancestral North America. ...
... a subduction zone and a volcanic island arc east of ancestral North America. ...
ppt
... P, S, and Q tomographic images show low velocity regions from 40-100 km depth beneath the arc and backarc spreading centers that may result from melt. ...
... P, S, and Q tomographic images show low velocity regions from 40-100 km depth beneath the arc and backarc spreading centers that may result from melt. ...
Pliocene to Present-day stress field along the western Gibraltar
... have been proposed to explain the development of the Betic-Rif thrust belt along with the evolution of the Alboran Basin. Recent seismic tomography reveals a high velocity slab dipping to the East from the Gibraltar Strait up to 600 km depth bellow the Alboran Sea that could be interpreted as subduc ...
... have been proposed to explain the development of the Betic-Rif thrust belt along with the evolution of the Alboran Basin. Recent seismic tomography reveals a high velocity slab dipping to the East from the Gibraltar Strait up to 600 km depth bellow the Alboran Sea that could be interpreted as subduc ...
Izu-Bonin-Mariana Arc
The Izu-Bonin-Mariana (IBM) arc system is an outstanding example of a plate tectonic convergent boundary. IBM extends over 2800 km south from Tokyo, Japan, to beyond Guam, and includes the Izu Islands, Bonin Islands, and Mariana Islands; much more of the IBM arc system is submerged below sealevel. The IBM arc system lies along the eastern margin of the Philippine Sea Plate in the Western Pacific Ocean. It is most famous for being the site of the deepest gash in Earth's solid surface, the Challenger Deep in the Mariana Trench. The IBM arc system formed as a result of subduction of the western Pacific plate. The IBM arc system now subducts mid-Jurassic to Early Cretaceous lithosphere, with younger lithosphere in the north and older lithosphere in the south, including the oldest (~170 million years old, or Ma) oceanic crust. Subduction rates vary from ~2 cm (1 inch) per year in the south to 6 cm (~2.5 inches) in the north. The volcanic islands that comprise these island arcs are thought to have been formed from the release of volatiles (steam from trapped water, and other gases) being released from the subducted plate, as it reached sufficient depth for the temperature to cause release of these materials. The associated trenches are formed as the oldest (most western) part of the Pacific plate crust increases in density with age, and because of this process finally reaches its lowest point just as it subducts under the crust to the west of it.The IBM arc system is an excellent example of an intra-oceanic convergent margin (IOCM). IOCMs are built on oceanic crust and contrast fundamentally with island arc built on continental crust, such as Japan or the Andes. Because IOCM crust is thinner, denser, and more refractory than that beneath Andean-type margins, study of IOCM melts and fluids allows more confident assessment of mantle-to-crust fluxes and processes than is possible for Andean-type convergent margins. Because IOCMs are far removed from continents they are not affected by the large volume of alluvial and glacial sediments. The consequent thin sedimentary cover makes it much easier to study arc infrastructure and determine the mass and composition of subducted sediments. Active hydrothermal systems found on the submarine parts of IOCMs give us a chance to study how many of earth's important ore deposits formed.