Assignment 2: Continental Drift, Sea Floor Spreading, and Plate Tectonics

  • Due Sep 7, 2021 at 11:59pm
  • Points 75
  • Questions 41
  • Time Limit None
  • Allowed Attempts 2

Instructions

Introduction

Plate tectonics is a unifying framework for understanding the dynamic geology of the Earth. The theory posits that the outermost layers of the Earth (the crust and uppermost mantle) make up the brittle lithosphere of the Earth. The lithosphere is broken up into a number of thin plates, which move on top of the asthenosphere (middle mantle). The asthenosphere is solid but flows plastically over geologic time scales.

Directions: 

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