EVSC 2800 Study Guide - Final Guide: Phyllite, Biogeochemical Cycle, Pyroxene

• School: University of Virginia
• Department: Environmental Sciences
• Course: EVSC 2800
• Professor: Herman Janet

Document Summary

A suite of rocks (in order) peridotite, gabbro, basalt (pillow lava), and deep-sea sediments is an ophiolite sweet. Higher surface temperatures have been related to higher co2 content throughout earth history. The increasing velocity of seismic waves at the base of the crust is due to density difference in the upper mantle. The slowing of both s and p waves within the upper mantle is evidence of. With increasing heat and pressure of burial, decaying woody ~land~ plants become peat, then lignite, then bituminous coal, then anthracite coal. Over vast expanses of time, the wilson cycle describes the opening and closing of ocean basins. Because seismic wave velocity increases with increasing density of solids, we know the lower mantle is compositionally like p. I use the principle of superposition to conclude that rocks go from youngest to oldest as they go down. I also know that layers of sedimentary rocks were originally horizontal.