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Paleoceanography - MARS 1010 Paleoceanography Dr Yager...

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MARS 1010 Paleoceanography Dr. Yager Review questions / Objectives Read Sverdrup and Armbrust Ch. 3 and 4 (selectively) 1. Know the approximated dates of the geologic eras (Cenozoic, Mesozoic, Paleozoic, Precambrian) and major characteristics of those times, including the general arrangements of the continents, relative sea level, general ocean circulation, and global climate. Paleozoic- “icehouse” o The continents were flooded by shallow seas o Super-continent Gondwana formed near the South Pole. o One of the coldest times in earth history o Land plants begin to colinize the barren continents o Pre-pangea started to form as forests grew. Also the early Paleozoic oceans were closing. o At the end of this period, 99% of all life perished Mesozoic- “greenhouse” o The supercontinenet of pangea allowed land animals to migrate from pole to pole. o Pangea began to break up o A huge comet (10 miles wide) cause a global climate change that killed the dinosaurs and other forms of life.
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