Tag: plate tectonics

Divergent Boundary—Fast Spreading Ridge Educational

Divergent Boundary—Fast Spreading Ridge Educational

At divergent margins, lithospheric plates move in opposite directions. The plates, which include crust and part of the upper mantle, ride over the asthenosphere. As hot mantle rock rises to shallow depths, it begins to melt due to…

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What is the Moho? How was it Discovered? (Educational)

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How do scientists know that there is a boundary called the Moho that separates Earth’s thin crust from the upper mantle? First a little history on one of the greatest contributors to seismology from the early 1900s. Andrija…

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Plate Tectonics—History of How it was Discovered (Educational)

Plate Tectonics—History of How it was Discovered (Educational)

Plate tectonics theory was not accepted for centuries because no one could adequately answer the question, “What is the mechanism that drives the plates?” In the late sixteenth century. Abraham Ortelius, in compiling New World explorer maps noted…

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UNAVCO (Explained in 3 Minutes)

UNAVCO (Explained in 3 Minutes)

One of the big questions that people always ask is, “Where am I?” The best way to answer that question is with geodesy. Geodesy’s actually the study of Earth, and where we are on Earth. The shape of…

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