GEOL 1001 Study Guide - Final Guide: Sulfur Dioxide, Continental Crust, Archean
Document Summary
Terms to remember: biomarker molecules- durable chemicals produced only by metabolism of living organisms. Isotopic signatures- analysis of isotopes in carbon rich sediments: ediacaran fauna- usual soft bodied fossils. ***hadean eon was considered hell on earth ; first eon of the earth. ***earth smashed into a protoplanet; debris from the collision formed the moon. ***proterozoic means first life; stable crustal blocks formed together to form large continents; by the end of the eon supercontinents had formed through continental collisions; had multicellular organisms because the atmosphere became rich in oxygen. ***phanerozoic is divided into three eras: aleozoic(ancient life), mesozoic(middle life), and cenozoic(recent life) ***during the phanerozoic eon sea level has changed, tectonic plates and continental blocks rearranged; the new super continents formed and began to rift apart. ***early paleozoic- the late precambrian supercontinent broke apart; diversification of life into complex forms- first in the sea then later on land.
