58 Earth Review Power Point 2011
... to the sea floor spreading at the MidAtlantic Ridge, which is a Divergent boundary. ...
... to the sea floor spreading at the MidAtlantic Ridge, which is a Divergent boundary. ...
msword - rgs.org
... one of the earth’s major tectonic plates – the Indo-Australian plate (A) – collides with the smaller Burma microplate (B) at a rate of about 6 cm/year. At this destructive plate boundary, the denser Indo-Australian plate is subducted beneath the overriding Burma plate. Driven by convectional current ...
... one of the earth’s major tectonic plates – the Indo-Australian plate (A) – collides with the smaller Burma microplate (B) at a rate of about 6 cm/year. At this destructive plate boundary, the denser Indo-Australian plate is subducted beneath the overriding Burma plate. Driven by convectional current ...
Plate Tectonics, Earthquakes and Volcanoes
... • The stripes exist because Earth’s magnetic field has reversed itself many times in the past • The stripes showed that new ocean floor was being added to both sides of the mid-ocean ridge at roughly the same rate. ...
... • The stripes exist because Earth’s magnetic field has reversed itself many times in the past • The stripes showed that new ocean floor was being added to both sides of the mid-ocean ridge at roughly the same rate. ...
File
... flat-topped seamount. Their flatness is due to erosion by waves, winds, and atmospheric processes. ...
... flat-topped seamount. Their flatness is due to erosion by waves, winds, and atmospheric processes. ...
Earthquake California - Berkeley County Schools
... higher in the underlying mantle. As the rocks move away from the spreading center, they cool and become denser and less buoyant. Typically, these types of plate boundaries only produce around 5% of all seismic energy released in a given year and recently determined that they have a moderate amount o ...
... higher in the underlying mantle. As the rocks move away from the spreading center, they cool and become denser and less buoyant. Typically, these types of plate boundaries only produce around 5% of all seismic energy released in a given year and recently determined that they have a moderate amount o ...
Variations in the structure and rheology of the lithosphere.
... The principal points of this new view are as follows: 1) Earthquakes in the mantle are confined to regions colder than about 600oC. 2) With very few exceptions, earthquakes everywhere are confined to a single seismogenic layer which, in the oceans is limited by the 600oC isotherm, in young orogenic ...
... The principal points of this new view are as follows: 1) Earthquakes in the mantle are confined to regions colder than about 600oC. 2) With very few exceptions, earthquakes everywhere are confined to a single seismogenic layer which, in the oceans is limited by the 600oC isotherm, in young orogenic ...
Earth`s Moving Plates - pages 186-189
... He claimed that over time, Pangaea had broken into pieces and _______________ _______________. The theory of continental drift was supported by _______________ from many different fields of _______________. Wegener explained why the _______________ of different continents seem to _______________. He ...
... He claimed that over time, Pangaea had broken into pieces and _______________ _______________. The theory of continental drift was supported by _______________ from many different fields of _______________. Wegener explained why the _______________ of different continents seem to _______________. He ...
plate boundaries
... • When sufficiently cool and dense, these rocks may sink back into the mantle at subduction zones – Downward plunge of cold rocks gives rise to oceanic trenches ...
... • When sufficiently cool and dense, these rocks may sink back into the mantle at subduction zones – Downward plunge of cold rocks gives rise to oceanic trenches ...
Top driven asymmetric mantle convection
... *Caltech, Pasadena Abstract The role of the decoupling in the low-velocity zone is crucial for understanding the mechanisms governing plate tectonics and mantle convection. Mantle convection models fail to integrate plate kinematics and thermodynamics of the mantle. We computed the volume of the pla ...
... *Caltech, Pasadena Abstract The role of the decoupling in the low-velocity zone is crucial for understanding the mechanisms governing plate tectonics and mantle convection. Mantle convection models fail to integrate plate kinematics and thermodynamics of the mantle. We computed the volume of the pla ...
Plate Movement - cloudfront.net
... Although some plates diverge, or move away, from each other, many more converge, or move toward, each other. When two plates converge, either they both crumble where they collide or one plate runs under the other and is forced downward toward the earth’s core. When one plate slides under the other, ...
... Although some plates diverge, or move away, from each other, many more converge, or move toward, each other. When two plates converge, either they both crumble where they collide or one plate runs under the other and is forced downward toward the earth’s core. When one plate slides under the other, ...
Lab 2 Plate Tectonics and Ocean Geography OCE-3014L
... 5a. What is the name of the subduction zone/trench closest to Miami, Florida. _______________________________________________ What two plates converge here? ______________________________________________________________________ 6. Name the type of plate boundary (divergent, convergent, transform) be ...
... 5a. What is the name of the subduction zone/trench closest to Miami, Florida. _______________________________________________ What two plates converge here? ______________________________________________________________________ 6. Name the type of plate boundary (divergent, convergent, transform) be ...
Earth`s Crust
... Plate tectonic – theory that Earth’s crust and part of the upper mantle are broken into sections ...
... Plate tectonic – theory that Earth’s crust and part of the upper mantle are broken into sections ...
Earth Science Regents Review
... If the difference in arrival times of the P- and Swaves is 6 minutes 20 seconds, how far is the distance to the epicenter? ________________ A P-wave arrived at 3:32:00 p.m. and the S-wave arrived at 3:36:30 p.m. How far away is the ...
... If the difference in arrival times of the P- and Swaves is 6 minutes 20 seconds, how far is the distance to the epicenter? ________________ A P-wave arrived at 3:32:00 p.m. and the S-wave arrived at 3:36:30 p.m. How far away is the ...
THE EARTH`S STRUCTURE
... Earth, the crust, mantle, and core, are all made of different materials (Figure 1). The crust is solid rock and can range in thickness from three miles (the ocean floor) to 37 miles (mountain ranges). Project Mohole, began by U.S. scientists in 1959, was designed to drill a hole all the way through ...
... Earth, the crust, mantle, and core, are all made of different materials (Figure 1). The crust is solid rock and can range in thickness from three miles (the ocean floor) to 37 miles (mountain ranges). Project Mohole, began by U.S. scientists in 1959, was designed to drill a hole all the way through ...
INSIDE EARTH: CHAPTER 3
... Ring of Fire:a major volcanic belt formed by many volcanoes at the rim of the Pacific Ocean Most volcanoes occur along diverging plate boundaries, such as the mid-ocean ridge or in subduction zones around the edges of oceans ...
... Ring of Fire:a major volcanic belt formed by many volcanoes at the rim of the Pacific Ocean Most volcanoes occur along diverging plate boundaries, such as the mid-ocean ridge or in subduction zones around the edges of oceans ...
Divergent Boundaries
... The size of the Earth has not changed significantly during the past 600 million years, and very likely not since shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmis ...
... The size of the Earth has not changed significantly during the past 600 million years, and very likely not since shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmis ...
The Dynamic Crust Topic 4 Topic 12 in Review Book
... Orogeny refers to times of mountain building ...
... Orogeny refers to times of mountain building ...
Where & Why Volcanoes Form
... contains magma. So, when the plates pull apart, at a divergent boundary, magma comes up through the crust forming volcanoes. This is what creates mid-ocean ridges. Most of the time this happens underwater (in the ocean). However, there are a couple of exceptions. Iceland is being pulled apart by a ...
... contains magma. So, when the plates pull apart, at a divergent boundary, magma comes up through the crust forming volcanoes. This is what creates mid-ocean ridges. Most of the time this happens underwater (in the ocean). However, there are a couple of exceptions. Iceland is being pulled apart by a ...
Notes: Laramide orogeny
... from approximately 80 million years ago to 40 million years ago Laramide uplifts are topographically high areas that were create during this period. Although the cause of these uplifts is still debated, the uplifts are almost certainly related to ongoing convergence and subduction of the oceanic Far ...
... from approximately 80 million years ago to 40 million years ago Laramide uplifts are topographically high areas that were create during this period. Although the cause of these uplifts is still debated, the uplifts are almost certainly related to ongoing convergence and subduction of the oceanic Far ...
WG3200 Unit 1 - Chapter 1 File
... • The tension is created as the plates move away from each other. ...
... • The tension is created as the plates move away from each other. ...
plate tectonics - NagelBeelmanScience
... This theory stated that the belief that the planet was originally a “molten ball,” and in the process of cooling, the surface cracked and folded over upon itself. However, if this had really happened, all of the mountain ranges in the world would be the same age, but they are not. That is the fault ...
... This theory stated that the belief that the planet was originally a “molten ball,” and in the process of cooling, the surface cracked and folded over upon itself. However, if this had really happened, all of the mountain ranges in the world would be the same age, but they are not. That is the fault ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.