ENV 151 Study Guide - Quiz Guide: Divergent Boundary, Continental Drift, Continental Crust
13 Dec 2018
School
Department
Course
Professor
Document Summary
Similarity of continental coastlines and jigsaw-like fit of the continents: explain why the discovery of the fossil remains of mesosaurus in both south america and. Africa, but nowhere else, supports the continental drift hypothesis. Mesosaurus was a freshwater reptile and could not have migrated across the ocean. Mid ocean ridge: compare and contrast the lithosphere and the asthenosphere. The lithosphere is the hard outer portion of the earth"s crust. The asthenosphere lies beneath and is more ductile, allowing the lithospheric plates to float and be mobile: list the seven largest lithospheric plates. North american, south american, pacific, african, eurasian, australian-indian, and. Long, continuous underwater mountain chain, divergent plate boundary, marked by formation of new basaltic rock, rift valleys along the crest: briefly describe the process of continental rifting. Mantle plumes beneath continental crust generate magmatic upwelling and forces that pull the crust apart, generating a new rift valley. The rift valley eventually widens to create a new ocean basin.
