Friday, February 22, 2019
plate tectonics

plate tectonics

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Earth's mantle (dark red) lies below the crust (brown layer near the surface) and above the outer core (bright red).
plate tectonics

A wrench in Earth’s engine: Stagnant slabs

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Plate Tectonics
plate tectonics

Plate Tectonics May Have Been Active on Earth Since the Very...

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This graphic shows how the ancient land masses of Laurentia, Avalonia and Armorica would have collided to create the countries of England, Scotland and Wales.
plate tectonics

Geologists reveal ancient connection between England and France

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Paleogeographic scenario for the Jiachala Formation. a) Jiachala Formation, b)&c) other trench deposits to the west.
plate tectonics

Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone

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Southern Japan on Feb. 3rd, 2011, showing the active cones of Kirishima (Shinmoedake) and Aira caldera (Sakurajima) volcanoes.
plate tectonics

Study finds deep subterranean connection between two Japan volcanoes

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Earth
plate tectonics

Scientists propose solution to ‘Gaia puzzle’

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Nuvvuagittuq, Canada
plate tectonics

Earth could have supported continental crust, life earlier than thought

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Earth's crust, mantle and outer core interactions.
plate tectonics

New insight into Earth’s crust, mantle and outer core interactions

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A 3D computer model of the asthenosphere by Rice University geophysicists finds that the convective cycling and pressure-driven flow can sometimes cause the asthenosphere to move even faster than the tectonic plates riding atop it.
plate tectonics

Flow in the asthenosphere drags tectonic plates along

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Cifelliodon wahkarmoosuch
plate tectonics

Utah fossil reveals global exodus of mammals’ near relatives to major...

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The Galicia group -- from left, Rice graduate student Nur Schuba, alumnus Ara Alexanian and graduate research assistant Mari Tesi Sanjurjo -- discuss the northwest portion of the 3-D seismic volume at Rice's Visualization Lab.
plate tectonics

Sub-sea rift spills secrets to seismic probe

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Lake Urmia (LU), its water level over time, and the survey area of the four satellites are shown, along with a topographic map of Iran and a sketch of the Lake Urmia Causeway.
plate tectonics

Keeping an eye on the soundness of structures

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plate tectonics

Formation of supercontinents and strength of ocean tides

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plate tectonics

Geologist identifies hidden clues to ancient supercontinents, confirms Pannotia

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Volcanic Eruption
plate tectonics

Scientists helping to improve understanding of plate tectonics

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IODP Expedition 381 collected 1.6 kilometers of sediment core from the Corinth Rift in Greece.
plate tectonics

International ocean drilling expedition obtains unique record of plate tectonic rifting...

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Cratonic lithosphere with a high-density root undergoes delamination when perturbed by mantle plumes from beneath. The removed cratonic root then thermally grows back, with its rock fabrics preserving recent mantle deformation.
plate tectonics

Continental interiors may not be as tectonically stable as geologists think

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This schematic illustration of the 2014 Iquique earthquake off the coast of Chile (magnitude 8.1) shows the locations of foreshocks (blue) and aftershocks (red) relative to the area of large slip on the fault (contour lines).
plate tectonics

Analysis of major earthquakes supports stress reduction assumptions

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The oceanic slow carbon cycle.
plate tectonics

How seafloor weathering drives the slow carbon cycle

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This is seismic reflection data.
plate tectonics

Tiny fossils, huge slides: Are diatoms the key to Earth’s biggest...

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