Plate Tectonics
... isostatic equilibrium: the concept that the oceanic crust and the continental crust float buoyantly in the denser mantle beneath. • Earth’s internal layers are studied by observing how earthquake waves change as they pass through the earth. • In plate tectonic theory the Earth’s outer rigid surface ...
... isostatic equilibrium: the concept that the oceanic crust and the continental crust float buoyantly in the denser mantle beneath. • Earth’s internal layers are studied by observing how earthquake waves change as they pass through the earth. • In plate tectonic theory the Earth’s outer rigid surface ...
Powerpoint Presentation Physical Geology, 10/e
... • Apparent polar wander curves for different continents suggest real movement relative to one another • Reconstruction of supercontinents using paleomagnetic information fits Africa and South America like puzzle pieces – Improved fit results in rock units (and glacial ice flow directions) precisely ...
... • Apparent polar wander curves for different continents suggest real movement relative to one another • Reconstruction of supercontinents using paleomagnetic information fits Africa and South America like puzzle pieces – Improved fit results in rock units (and glacial ice flow directions) precisely ...
Inside Earth: Chapter 1- Plate Tectonics
... Cause of Tsunamis • A tsunami triggered by an earthquake occurs where a slab of the ocean floor is displaced vertically along a fault. • A tsunami also can occur when the vibration of a quake sets an underwater landslide into motion. ...
... Cause of Tsunamis • A tsunami triggered by an earthquake occurs where a slab of the ocean floor is displaced vertically along a fault. • A tsunami also can occur when the vibration of a quake sets an underwater landslide into motion. ...
Changing Earth
... Gravity and Landslides Objects are pulled from higher places to lower places by gravity. Gravity can cause loose rocks and dirt to roll slowly or quickly downhill. Heavy rain can loosen a steep hill’s materials. Gravity pulls down the materials. They land in piles at the bottom. The rapid downhill m ...
... Gravity and Landslides Objects are pulled from higher places to lower places by gravity. Gravity can cause loose rocks and dirt to roll slowly or quickly downhill. Heavy rain can loosen a steep hill’s materials. Gravity pulls down the materials. They land in piles at the bottom. The rapid downhill m ...
Unit 4 Chapter 10
... Contains rocks & fossils that differ from the surrounding area Has major faults at the boundaries Has magnetic properties that do not match an area As oceanic crust subducts, a terrane is scraped off and becomes part of the continental crust (accretion). It can also be continental crusts colliding. ...
... Contains rocks & fossils that differ from the surrounding area Has major faults at the boundaries Has magnetic properties that do not match an area As oceanic crust subducts, a terrane is scraped off and becomes part of the continental crust (accretion). It can also be continental crusts colliding. ...
What are plate tectonics and what causes it?
... developed the theory of plate tectonics. • The theory of plate tectonics combines the theories of continental drift and seafloor spreading. • The theory of plate tectonics explains how and why the continents move. • It states that Earth's lithosphere is broken into plates that float on the upper man ...
... developed the theory of plate tectonics. • The theory of plate tectonics combines the theories of continental drift and seafloor spreading. • The theory of plate tectonics explains how and why the continents move. • It states that Earth's lithosphere is broken into plates that float on the upper man ...
Natural History of Newfoundland and Labrador: Geological Formation
... years ago. These mantle rocks, normally dark green in colour, are now brown because they have been open to the atmosphere for such a long time. The soil on the Tablelands is so poor in nutrients, very little grows in this area. It has often been described as a moonscape. (9) On the east coast of New ...
... years ago. These mantle rocks, normally dark green in colour, are now brown because they have been open to the atmosphere for such a long time. The soil on the Tablelands is so poor in nutrients, very little grows in this area. It has often been described as a moonscape. (9) On the east coast of New ...
the geology of the lakeland finland area
... tectonic plates, a number of arcs of volcanic islands arose that were thrust eastwards by flows taking place within the earth, colliding with each other and eventually with the old Archean basement. By the time this collision phase had come to an end around 1870 million years ago, the area of Finlan ...
... tectonic plates, a number of arcs of volcanic islands arose that were thrust eastwards by flows taking place within the earth, colliding with each other and eventually with the old Archean basement. By the time this collision phase had come to an end around 1870 million years ago, the area of Finlan ...
The Lakeland Finland
... tectonic plates, a number of arcs of volcanic islands arose that were thrust eastwards by flows taking place within the earth, colliding with each other and eventually with the old Archean basement. By the time this collision phase had come to an end around 1870 million years ago, the area of Finlan ...
... tectonic plates, a number of arcs of volcanic islands arose that were thrust eastwards by flows taking place within the earth, colliding with each other and eventually with the old Archean basement. By the time this collision phase had come to an end around 1870 million years ago, the area of Finlan ...
File
... • Continents on opposite sides of Atlantic fit together like puzzle pieces • Coal deposits and geologic formations on opposite sides of Atlantic match up ...
... • Continents on opposite sides of Atlantic fit together like puzzle pieces • Coal deposits and geologic formations on opposite sides of Atlantic match up ...
ES Ch 3 Test
... ______ 1. According to Wegener’s hypothesis of continental drift, a. Earth’s surface is made up of seven major landmasses. b. the continents do not move. c. Earth is slowly cooling and shrinking. d. the continents were once joined together in a single landmass. ______ 2. What is Pangaea? a. the name ...
... ______ 1. According to Wegener’s hypothesis of continental drift, a. Earth’s surface is made up of seven major landmasses. b. the continents do not move. c. Earth is slowly cooling and shrinking. d. the continents were once joined together in a single landmass. ______ 2. What is Pangaea? a. the name ...
Observing Convection Currents - Science
... mantle. The lithosphere is the crust. The lithosphere floats on the asthenosphere (the crust floats on the mantle) like ice on water. A tectonic plate is a piece of the Earth's crust (or lithosphere). The surface of the Earth consists of seven major tectonic plates and many more minor ones. Because ...
... mantle. The lithosphere is the crust. The lithosphere floats on the asthenosphere (the crust floats on the mantle) like ice on water. A tectonic plate is a piece of the Earth's crust (or lithosphere). The surface of the Earth consists of seven major tectonic plates and many more minor ones. Because ...
Geology 111 - A3 - Global geology at the turn of the century
... (freshwater) reptile Mesosaurus [as described on p. 14]. There are also several genera of plants (e.g., a type of fern known as Glossopteris), fossils of which are found on many of the southern continents, including Antarctica, also snails, earthworms and freshwater fish. Permanentists, who held tha ...
... (freshwater) reptile Mesosaurus [as described on p. 14]. There are also several genera of plants (e.g., a type of fern known as Glossopteris), fossils of which are found on many of the southern continents, including Antarctica, also snails, earthworms and freshwater fish. Permanentists, who held tha ...
Inside the Earth
... Made up of more iron and magnesium so is very dense • Convection currents occur in the mantle ...
... Made up of more iron and magnesium so is very dense • Convection currents occur in the mantle ...
Lecture Slides
... In reality, isostatic compensation doesn’t happen at a point, with an exact mirror image of topography at depth. Often there is regional lithospheric bending to partially accommodate the load, as well as a root. ...
... In reality, isostatic compensation doesn’t happen at a point, with an exact mirror image of topography at depth. Often there is regional lithospheric bending to partially accommodate the load, as well as a root. ...
Notes on Plate Tectonics Plate tectonics states that the Earth`s crust
... 1. seafloor spreading - when magma from the Earth's mantle rises to the surface at mid-ocean ridges and cools to form new seafloor, which new magma slowly pushes away from the ridge. 2a. subduction zoneforms when ocean floor plate collides with a less dense continental plate, the ocean plate sinks u ...
... 1. seafloor spreading - when magma from the Earth's mantle rises to the surface at mid-ocean ridges and cools to form new seafloor, which new magma slowly pushes away from the ridge. 2a. subduction zoneforms when ocean floor plate collides with a less dense continental plate, the ocean plate sinks u ...
Earthquakes - St Helens Park Public School
... earthquakes rattle the world each year. The countries that are most at risk of having an earthquake are unknown precisely, as earthquakes can happen in many continents and countries around the world. Earthquakes can be felt over large areas although they usually last less than one minute. ...
... earthquakes rattle the world each year. The countries that are most at risk of having an earthquake are unknown precisely, as earthquakes can happen in many continents and countries around the world. Earthquakes can be felt over large areas although they usually last less than one minute. ...
Oceanography—Plate Tectonics Name
... A combination of ideas lead to the development of the theory of plate tectonics. The first important idea—continental drift—was proposed by Alfred Wegener in the early 20th century. Wegener observed that in a number of areas of the contemporary world, coastlines seemed to match as though they had on ...
... A combination of ideas lead to the development of the theory of plate tectonics. The first important idea—continental drift—was proposed by Alfred Wegener in the early 20th century. Wegener observed that in a number of areas of the contemporary world, coastlines seemed to match as though they had on ...
UNIT 2 Metamorphism and tectonic plates: Metamorphism is a
... Metamorphism and tectonic plates: Metamorphism is a process where the type or distribution of the minerals in rocks changes because of high pressure or very high temperatures. This process is called isochemical because the global chemical composition of the rock essentially remains unchanged. Metamo ...
... Metamorphism and tectonic plates: Metamorphism is a process where the type or distribution of the minerals in rocks changes because of high pressure or very high temperatures. This process is called isochemical because the global chemical composition of the rock essentially remains unchanged. Metamo ...
Plate Tectonics II - Clark Science Center
... and cold, more dense material sinks (such as old oceanic lithosphere that is being subducted into the mantle). ...
... and cold, more dense material sinks (such as old oceanic lithosphere that is being subducted into the mantle). ...
GLS100labF10_FR_fieldtrip
... regolith. The outcrop seen here is just one of many exposed throughout the park. a. Evaluate the rocks: Look for the presence of sedimentary layering (stratification) and ...
... regolith. The outcrop seen here is just one of many exposed throughout the park. a. Evaluate the rocks: Look for the presence of sedimentary layering (stratification) and ...
Continental Drift
... large areas of the southern hemisphere. In what type of climate do these past ice sheets now belong in? ...
... large areas of the southern hemisphere. In what type of climate do these past ice sheets now belong in? ...
Forward Modelling in the Geosciences
... the east, was covered by a shallow sea (Fig. 3). This area has accumulated up to 3.5 km of Cretaceous and Jurassic sediments. During the Late Cretaceous, eastern Australia became progressively uplifted and exposed, with a flooding minimum 80-70 million years ago, when global sea-level was inferred ...
... the east, was covered by a shallow sea (Fig. 3). This area has accumulated up to 3.5 km of Cretaceous and Jurassic sediments. During the Late Cretaceous, eastern Australia became progressively uplifted and exposed, with a flooding minimum 80-70 million years ago, when global sea-level was inferred ...
Post-glacial rebound
Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.