Define and discuss on Isostatic Equilibrium Submitted by WWW
... continental blocks, which increases their weight, and they then sink farther into the plastic asthenosphere. Areas that are tectonically stable tend to be isostatically balanced. The viscosity of the mantle can be calculated based on the rates of the isostatic adjustment of the crustal blocks. The d ...
... continental blocks, which increases their weight, and they then sink farther into the plastic asthenosphere. Areas that are tectonically stable tend to be isostatically balanced. The viscosity of the mantle can be calculated based on the rates of the isostatic adjustment of the crustal blocks. The d ...
Plate Boundaries PPT - Coventry Local Schools
... ▪ Plate Tectonics – the theory that the Earth’s lithosphere is divided into tectonic plates that move around on top of the asthenosphere ▪ The lithosphere is made of two types of crust ▪ Continental – Less dense, Thicker on average ▪ Oceanic – More dense, Thinner on average ...
... ▪ Plate Tectonics – the theory that the Earth’s lithosphere is divided into tectonic plates that move around on top of the asthenosphere ▪ The lithosphere is made of two types of crust ▪ Continental – Less dense, Thicker on average ▪ Oceanic – More dense, Thinner on average ...
http://www.pbs.org/wgbh/aso/tryit/tectonics/#
... Mauna Loa, on the Big Island of Hawaii, is the largest active volcano in the world. It last erupted in 1984. Mauna Loa erupted 14 times in the 20th Century, and 37 times since 1832. Mauna Loa is the most massive mountain on Earth, rising to an elevation of 13,677 feet above sea level, or 31,677 fee ...
... Mauna Loa, on the Big Island of Hawaii, is the largest active volcano in the world. It last erupted in 1984. Mauna Loa erupted 14 times in the 20th Century, and 37 times since 1832. Mauna Loa is the most massive mountain on Earth, rising to an elevation of 13,677 feet above sea level, or 31,677 fee ...
Plate Tectonics slideshow
... a. The continents have always been where they are now. b. Today’s continents were once part of a single land mass that split apart. c. The continents are made of rock. d. The continents will one day join to form a single continent. ...
... a. The continents have always been where they are now. b. Today’s continents were once part of a single land mass that split apart. c. The continents are made of rock. d. The continents will one day join to form a single continent. ...
Answers to Plate Tectonics Study Guide
... 11. The scientists have studied the minerals in sea floor rocks and how they align with the Earth’s magnetic field at the time they were formed. 12. A rift valley, volcano or mid ocean ridge. New crust is also formed at a divergent boundary. 13. When oceanic crust meets with oceanic crust a trench f ...
... 11. The scientists have studied the minerals in sea floor rocks and how they align with the Earth’s magnetic field at the time they were formed. 12. A rift valley, volcano or mid ocean ridge. New crust is also formed at a divergent boundary. 13. When oceanic crust meets with oceanic crust a trench f ...
Earth Science Exam Review 6
... of ozone. This production of oxygen in the ozone layer is caused by exposing ozone to a strong source of which type of electromagnetic radiation? A radio waves B microwaves C infrared light D ultraviolet light ...
... of ozone. This production of oxygen in the ozone layer is caused by exposing ozone to a strong source of which type of electromagnetic radiation? A radio waves B microwaves C infrared light D ultraviolet light ...
01 00_Earth_Layers 1
... The inner core of the Earth has temperatures and pressures so great that the metals are ...
... The inner core of the Earth has temperatures and pressures so great that the metals are ...
4.2 The Theory of Plate Tectonics
... Tectonics: The study of the formation of features in the earth’s crust Open textbook to p. 72 ...
... Tectonics: The study of the formation of features in the earth’s crust Open textbook to p. 72 ...
The Changing Face of the Planet new ppt
... separating the crust from the mantle Lithosphere Topmost solid part of the Earth Composed of the crust and part of the upper mantle Broken into large sections called plates ...
... separating the crust from the mantle Lithosphere Topmost solid part of the Earth Composed of the crust and part of the upper mantle Broken into large sections called plates ...
The Background of Plate Tectonics - Hadeln
... Alfred Wegener espoused this idea in 1912. Reported by Torsvik And Cocks (2012), Wegener, a German meteorologist developed the proposal that all of the the continents to begin with produced an individual supercontinent. This supercontinent, which he identified as Pangaea, was enclosed by a large wat ...
... Alfred Wegener espoused this idea in 1912. Reported by Torsvik And Cocks (2012), Wegener, a German meteorologist developed the proposal that all of the the continents to begin with produced an individual supercontinent. This supercontinent, which he identified as Pangaea, was enclosed by a large wat ...
Lecture 6: Igneous Rocks (Melting and Differentiation) Oct. 4, 2006
... mechanism for getting water into mantle subduction of sediments and hydrous mineral phases Tectonic settings of magma production 1. ridges adiabatic decompression melting of peridotite > basalt (why will become clearer later) images of melt at ridge produced is basalt, gabbros at greater depth 2. su ...
... mechanism for getting water into mantle subduction of sediments and hydrous mineral phases Tectonic settings of magma production 1. ridges adiabatic decompression melting of peridotite > basalt (why will become clearer later) images of melt at ridge produced is basalt, gabbros at greater depth 2. su ...
chpt 8Earthquake and volcanoes
... magma rises to those weaken fractures Fissures are formed where magma flows as lava reaches the surface (primarily at rifts) ...
... magma rises to those weaken fractures Fissures are formed where magma flows as lava reaches the surface (primarily at rifts) ...
The Changing Earth
... TECTONIC PLATE MOVEMENT • Plate boundaries are places where plates interact and many earthquakes and volcanoes occur. The three main boundaries are: 1. Convergent boundaries where plates move together 2. Divergent boundaries where plates move away from one another 3. Transform-fault boundaries wher ...
... TECTONIC PLATE MOVEMENT • Plate boundaries are places where plates interact and many earthquakes and volcanoes occur. The three main boundaries are: 1. Convergent boundaries where plates move together 2. Divergent boundaries where plates move away from one another 3. Transform-fault boundaries wher ...
Plate Tectonics - Sterlingmontessoriscience
... (2) Ocean crust, formed at divergent margins, is mafic and dense. (3) As ocean crust ages and cools, its great density relative to the continents results in subduction as plates converge. [As a result, old ocean crust cannot persist, whereas old parts of the buoyant continents can survive for eons.] ...
... (2) Ocean crust, formed at divergent margins, is mafic and dense. (3) As ocean crust ages and cools, its great density relative to the continents results in subduction as plates converge. [As a result, old ocean crust cannot persist, whereas old parts of the buoyant continents can survive for eons.] ...
1 Ocean Islands and Plume Magmatism
... features is a seismically fast slab-like anomaly that extends from the surface beneath the Continental US well throughout the whole mantle. This is thought to be the image of the subducted Farallon plate. ...
... features is a seismically fast slab-like anomaly that extends from the surface beneath the Continental US well throughout the whole mantle. This is thought to be the image of the subducted Farallon plate. ...
test bank for sem 1 final 2014 File
... d. The granite was deposited on previous layers of sedimentary rocks, thus forming higher ground. 66. The block diagram below represents the present ocean floor. The white arrows show the movement of the ocean floor and the black arrows show the movement of the asthenosphere. Some rock sections foun ...
... d. The granite was deposited on previous layers of sedimentary rocks, thus forming higher ground. 66. The block diagram below represents the present ocean floor. The white arrows show the movement of the ocean floor and the black arrows show the movement of the asthenosphere. Some rock sections foun ...
The Origin of Continents and Oceans
... Subduction Zone(vocabulary)- the place where one tectonic plate rides up over another and causes it to be pushed down and recycled (melted) ...
... Subduction Zone(vocabulary)- the place where one tectonic plate rides up over another and causes it to be pushed down and recycled (melted) ...
Earth Layer`s PPT
... Physical Structure of the Earth Layers Reviewed • Crust and Lithosphere- rigid outer layer • Mantle and Asthenosphere- solid rock that flows slowly (like hot asphalt) • Outer Core- liquid layer • Inner Core- solid, very dense ...
... Physical Structure of the Earth Layers Reviewed • Crust and Lithosphere- rigid outer layer • Mantle and Asthenosphere- solid rock that flows slowly (like hot asphalt) • Outer Core- liquid layer • Inner Core- solid, very dense ...
Lesson 2 - Layers of the Earth
... The Asthenosphere The molten rock layer, with a consistency of ...
... The Asthenosphere The molten rock layer, with a consistency of ...
Theory of Plate Tectonics
... between two plates that are sliding past each other EARTHQUAKES along faults ...
... between two plates that are sliding past each other EARTHQUAKES along faults ...
Plate Tectonics
... 4. Climatic patterns shown by rock layers: Some rock types only form in certain climates, for example coal, which forms in warm, very wet (rainy) environments. If coal is found in a place that is not warm and rainy, then either the climate has changed or the rock has moved. ...
... 4. Climatic patterns shown by rock layers: Some rock types only form in certain climates, for example coal, which forms in warm, very wet (rainy) environments. If coal is found in a place that is not warm and rainy, then either the climate has changed or the rock has moved. ...
Student Notes - Unit 3 (P.2)
... We know more about stars and distant galaxies than our own Earth’s interior. It has been studied by investigating direct and indirect sources. Direct Source: Parts of the mantle have been pushed up through the surface during movements of the ocean floor (plate tectonics). o Ex: Grouse Mourn Na ...
... We know more about stars and distant galaxies than our own Earth’s interior. It has been studied by investigating direct and indirect sources. Direct Source: Parts of the mantle have been pushed up through the surface during movements of the ocean floor (plate tectonics). o Ex: Grouse Mourn Na ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.