Isoplatesmosthazardous 58.62KB 2017-03-29
... carried. One of the most hazardous features at plate boundaries are volcanoes where magma extrudes to the surface. As conservative boundaries do not feature any crustal subduction or creation- as destructive margins do- they are undoubtedly less hazardous in this sense. Meanwhile at destructive marg ...
... carried. One of the most hazardous features at plate boundaries are volcanoes where magma extrudes to the surface. As conservative boundaries do not feature any crustal subduction or creation- as destructive margins do- they are undoubtedly less hazardous in this sense. Meanwhile at destructive marg ...
HazardsModuleoutline 86.50KB 2017-03-29 12
... To understand why we need to know about the earths internal structure. To understand that the earth is differentiated into different layers. To be able to name and label on a diagram the different layers of the earth. To be able to describe the physical and chemical properties of the different layer ...
... To understand why we need to know about the earths internal structure. To understand that the earth is differentiated into different layers. To be able to name and label on a diagram the different layers of the earth. To be able to describe the physical and chemical properties of the different layer ...
Document
... The oceanic crust contains 0.147% of the mantle-crust mass. The majority of the Earth's crust was made through volcanic activity. The oceanic ridge system, a 40,000-kilometer network of volcanoes, generates new oceanic crust at the rate of 17 km3 per year, covering the ocean floor with basalt. Hawai ...
... The oceanic crust contains 0.147% of the mantle-crust mass. The majority of the Earth's crust was made through volcanic activity. The oceanic ridge system, a 40,000-kilometer network of volcanoes, generates new oceanic crust at the rate of 17 km3 per year, covering the ocean floor with basalt. Hawai ...
Investigate Earthquakes, Volcanoes, and Mountain Formation
... Earth’s rocky surface, or crust, is actually a thin outer shell. Together with the top part of the mantle, the crust is broken into ten large plates and many smaller ones. These tectonic plates fit together like a puzzle, but they’re not stuck in one place. They float on Earth’s mantle, a thick laye ...
... Earth’s rocky surface, or crust, is actually a thin outer shell. Together with the top part of the mantle, the crust is broken into ten large plates and many smaller ones. These tectonic plates fit together like a puzzle, but they’re not stuck in one place. They float on Earth’s mantle, a thick laye ...
Easter-GCSE-Geog-Revision-Lecture-2015
... 1) The structure of the interior of the earth. 2) How plate tectonics work. 3) The three types of plate boundaries, named examples and how they work. ...
... 1) The structure of the interior of the earth. 2) How plate tectonics work. 3) The three types of plate boundaries, named examples and how they work. ...
TECTONIC PLATES: STUDY OF MOVEMENT AND DEFORMATION
... After pairing mode of faults in the system of faults (= conjugate faults) - terms derived from cartographic allure: the relay faults, parallel faults, concentric faults, radial faults, etc. In the case of the faults is observed the thickness increase in submerged compartments and its decrease in hig ...
... After pairing mode of faults in the system of faults (= conjugate faults) - terms derived from cartographic allure: the relay faults, parallel faults, concentric faults, radial faults, etc. In the case of the faults is observed the thickness increase in submerged compartments and its decrease in hig ...
Earth`s Interior Practice ASSIGNMENT
... 8. What rock is continental crust made up of? ___________________________________________ 9. What rock is oceanic crust made up of? ______________________________________________ 10. Why are there ???’s on this chart? What does this mean? ______________________________ 11. What happens to the temper ...
... 8. What rock is continental crust made up of? ___________________________________________ 9. What rock is oceanic crust made up of? ______________________________________________ 10. Why are there ???’s on this chart? What does this mean? ______________________________ 11. What happens to the temper ...
Calculating plate movement and plate motion activity File
... Finally, we'll do an interesting comparison. How well do the rates of present-day plate motion that we've measured using GPS and other surveying techniques compare with those estimated over the millions of years of geologic time? To do this, we'll look at the relative motion between North America an ...
... Finally, we'll do an interesting comparison. How well do the rates of present-day plate motion that we've measured using GPS and other surveying techniques compare with those estimated over the millions of years of geologic time? To do this, we'll look at the relative motion between North America an ...
Plate movements cause both sudden and gradual changes to
... north past the North American Plate, which carries the rest of California. Shallow earthquakes are very common along transform fault boundaries, such as the San Andreas Fault. ...
... north past the North American Plate, which carries the rest of California. Shallow earthquakes are very common along transform fault boundaries, such as the San Andreas Fault. ...
PNW Geology
... • the rock record observable at the surface • subsurface sampling (wells) & geophysics • rocks in other places that are somehow relevant (age, etc.) • models of how the Earth works (especially plate tectonics) • interpreting the 3rd and 4th dimensions ...
... • the rock record observable at the surface • subsurface sampling (wells) & geophysics • rocks in other places that are somehow relevant (age, etc.) • models of how the Earth works (especially plate tectonics) • interpreting the 3rd and 4th dimensions ...
Virginia Standards of Learning
... Major features of divergent boundaries include mid-ocean ridges, rift valleys, and fissure volcanoes. Major features of transform boundaries include strike-slip faults. A fault is a break or crack in Earth’s crust along which movement has occurred. Most active faults are located at or near p ...
... Major features of divergent boundaries include mid-ocean ridges, rift valleys, and fissure volcanoes. Major features of transform boundaries include strike-slip faults. A fault is a break or crack in Earth’s crust along which movement has occurred. Most active faults are located at or near p ...
Subduction and Mountain Building Andean
... metamorphism, and igneous activity © 2011 Pearson Education, Inc. ...
... metamorphism, and igneous activity © 2011 Pearson Education, Inc. ...
Chapter 20 PowerPoint
... • Island arc complexes are volcanic mountains that form as a result of the convergence of two oceanic plates. • Highly deformed mountains with deep roots may form as a result of the convergence of an oceanic plate and a continental plate. • Earth’s tallest mountains form along continental-continenta ...
... • Island arc complexes are volcanic mountains that form as a result of the convergence of two oceanic plates. • Highly deformed mountains with deep roots may form as a result of the convergence of an oceanic plate and a continental plate. • Earth’s tallest mountains form along continental-continenta ...
document
... •At one time in geologic history the continents were joined together in one large landmass called Pangaea. ...
... •At one time in geologic history the continents were joined together in one large landmass called Pangaea. ...
Earth Science Ch 11 Review : Mountains
... of an oceanic plate and a continental plate produces volcanic mountains and folded and faulted mountains. Mountains develop in two belts that run parallel to the edge of a continent. Continental volcanic arcs form when an oceanic plate is subducted beneath a continental plate. Convergent Boundary Mo ...
... of an oceanic plate and a continental plate produces volcanic mountains and folded and faulted mountains. Mountains develop in two belts that run parallel to the edge of a continent. Continental volcanic arcs form when an oceanic plate is subducted beneath a continental plate. Convergent Boundary Mo ...
Decoupling along plate boundaries: Key variable controlling the
... onward most of the shortening within the brittle crust was taken up by forethrust 1′, which coincides at the surface with former backthrust 1 (cf. Figs. 2B and 2C). Thrusting thereafter remained confined to near the transition zones between the weak and adjacent strong plates, leading to narrowing o ...
... onward most of the shortening within the brittle crust was taken up by forethrust 1′, which coincides at the surface with former backthrust 1 (cf. Figs. 2B and 2C). Thrusting thereafter remained confined to near the transition zones between the weak and adjacent strong plates, leading to narrowing o ...
Energy Resources
... sliding past each other. Earthquakes are the result. • Convergent: plates are colliding together. Mountains, subduction zones, and volcanoes are the result. • Divergent: plates are separating or pulling apart from each other. New sea-floor forms here midocean ridges are the result. • The Mid-Atlanti ...
... sliding past each other. Earthquakes are the result. • Convergent: plates are colliding together. Mountains, subduction zones, and volcanoes are the result. • Divergent: plates are separating or pulling apart from each other. New sea-floor forms here midocean ridges are the result. • The Mid-Atlanti ...
Plumes, or plate tectonic processes?
... have underlain central Greenland when the north Atlantic began to open, and migrated east at ~2 cm/year relative to Greenland subsequently (Lawver and Muller 1994) (figure 2). Thus, in the plume model, the ridge of thick crust southeast of Iceland must be explained by lateral flow from the then-dist ...
... have underlain central Greenland when the north Atlantic began to open, and migrated east at ~2 cm/year relative to Greenland subsequently (Lawver and Muller 1994) (figure 2). Thus, in the plume model, the ridge of thick crust southeast of Iceland must be explained by lateral flow from the then-dist ...
Convergent Plate Boundaries - North Coast Distance Education
... boundary. Most subduction zones have an outer swell, a trench and forearc, a magmatic arc, and a backarc basin. In contrast, continental collision produces a wide belt of folded and faulted mountains in the middle of a new continent. Subduction of oceanic lithosphere produces a narrow, inclined zone ...
... boundary. Most subduction zones have an outer swell, a trench and forearc, a magmatic arc, and a backarc basin. In contrast, continental collision produces a wide belt of folded and faulted mountains in the middle of a new continent. Subduction of oceanic lithosphere produces a narrow, inclined zone ...
Proterozoic History
... division, however it coincides with a range of significant changes. These include, but are not restricted to, changes in the thickness, extent and tectonics of the oceanic and continental lithosphere, changes in the composition of the continental crust and sediments derived there from, and changes i ...
... division, however it coincides with a range of significant changes. These include, but are not restricted to, changes in the thickness, extent and tectonics of the oceanic and continental lithosphere, changes in the composition of the continental crust and sediments derived there from, and changes i ...
Steady-state creation of crust-free lithosphere at cold spots in mid
... 1992) in calculation domain with area of 2048 3 1024 km and depth of 150 km (grid spacing 5 1 km). Base of rigid plates corresponds to depth of 700 8C isotherm. It was obtained iteratively, starting from constant-thickness plate-flow model. A: Crustal thickness (top diagram), mean degree of melting ...
... 1992) in calculation domain with area of 2048 3 1024 km and depth of 150 km (grid spacing 5 1 km). Base of rigid plates corresponds to depth of 700 8C isotherm. It was obtained iteratively, starting from constant-thickness plate-flow model. A: Crustal thickness (top diagram), mean degree of melting ...
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.