GEOL 1003 Study Guide - Midterm Guide: Shocked Quartz, Carbonate Rock, Devonian
Document Summary
There could be no converging plates to form mountains therefore there was no erosion and nothing could be buried (no negative feedback of oxygen): overview of the precambrian earth, know these dates, 4. 6 age of earth, 3. 8 , 2. 5 . Proterozoic eon: paleo (2. 5 to ___ ga, meso (, neo (, what you know about the early middle proterozoic earth, lithosphere, hydrosphere. Snowball earth: planet earth covered by ice from pole to pole for long periods (several millions of years) in the geological past: a coldest global climate imaginable , cause, consequence, how did it come out of it, cap carbonates sunny, warm climates, glacial diamictites cold air climates, evidence of sudden melt, reverse feedback mechanism, theory, snowball earth hypothesis. Graptolites (floaters) and nautiloids (swimmers: ordovician sea, ecology: expanding niches, close to modern complexity, reef: tabulate coral stromatoporoids, stromatolites: increasing burrowing activities, life on land: possible spores, but not conclusive, the largest and longest transgression in the phanerozoic.
