The Theory Of Seafloor Spreading Is Supported By Quizlet

Evidence of sea floor spreading. This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Because of these processes the ocean floor is renewed about every 200 million years.

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Use this set of terms vocabulary and questions to develop your knowledge of sea floor spreading.

The theory of seafloor spreading is supported by quizlet.

The process of subduction and sea floor spreading can change the size and shape of the oceans. Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. Sea floor spreading occurs when the sea floor spreads apart along divergent boundaries and forms the mid ocean ridge. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes.

Magma is pushed up through cracks in the crust along the mid ocean ridge. Learn with flashcards games and more for free. As the magma is thrust up and hardens it forms new crust and the ocean floor on both sides of the mid ocean ridge move outward. Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid ocean ridge system and spreads out laterally away from them.

That is the time it takes for new rock to form at the mid ocean ridge move atoss the ocean and sink into a trench. Alfred wegener supported his theory of continental drift by making a connection between the rocks rock structures and plant and animal fossils found in both africa and south america the theory of seafloor spreading is supported by.