Earth Sciences 1022A/B Study Guide - Final Guide: Structure Of The Earth, Banded Iron Formation, Distributary
11 Jan 2018
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Document Summary
Uniformitarianism: what we see right now has occurred throughout all of time. Speed of the earths changes has changed. Changes have occurred over billions of years such as mountains eroding into at areas. Nebula cloud of helium and hydrogen contracted under gravity and spun into a at disc of our solar system. Inside of the collision collapses between rocks evolved into earth. Core very hot interior: heat from radioactive material. Crust: thinnest outermost layers of the world. Mantle thickest layer: movement occurs below the mantle. Overtime the crust and mantle split which is called plate tectonics. Crust and upper most part of the mantle formed rigged plates. Lithosphere is made up of the crust and upper most mantle (hard) Asthenosphere moves by convection and is underneath the lithosphere. Continents were all together 2000 years ago. Similar geological properties across continents (rocks from glaciation & coal elds in arctic areas)
