Global Climate Change 10/05/16
Global Climate Change 10/05/16 MTR 1600
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This 2 page Class Notes was uploaded by Makala Schnablegger on Wednesday October 5, 2016. The Class Notes belongs to MTR 1600 at Metropolitan State University of Denver taught by Dr. Keah Schuenemann in Fall 2016. Since its upload, it has received 25 views. For similar materials see Global Climate Change in Natural and Physical Science at Metropolitan State University of Denver.
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Date Created: 10/05/16
Global Climate Change Notes 10/05/2016 A Model of Earth’s History: o Earth is Hella Old (Approximately 4.5 Billion Years) o Oldest rock was formed 3.5 billion years ago o Universe is approximately 1314 Billion years’ old Geologic Time o The different Eras, Periods, Sub Periods, and so on o Created using “relative” dates o Different Climates and Events Late Proterozoic o Ice everywhere, including the equator o Theoretically, this was caused by the continents being clumped together at a low latitude, which caused a lot of weather and weathering. o CO2 was drawn down through silicate weathering o The silicate Weathering feedback prevents global warming PermoCarboniferous o When coal was formed o Giant Bugs o The burial of plant debris, CO2, might have led to a substantial CO2 drop. o Types of coal: o Peat o Lignite o Bituminous o Anthracite Jurassic o Oil Formation o Volcanic Action o Very warm o Anoxic Events helped kill phytoplankton and create oil. o 65 Million Years ago, theoretically, a giant meteor fell to earth and created a giant dust storm that blocked out the sun and killed all of the dinosaurs. The crater from that meteor now rests underground off the coast of Mexico and is 200 kilometers wide. Cooling Cenozoic o Mammals o India crashed in to Asia and created the Himalayas and Tibetan plateau. o CO2 taken from the atmosphere due to weathering. Pleistocene Glaciations o Caused by the Milankovitch cycles Younger Dryas o 12 thousand years ago o Dryas Flower o Lasted approximately 1 thousand years o Caused by the thermohaline circulation, theoretically o Meltwater from the North American Ice Sheet rushed into the rest of the ocean, which disrupted the circulation, because it was cold but not very dense. Stops the warm waer from going anywhere. Medieval Warm Period: 8001300 o 11000: Viking established a colony The little ice age o Caused by increased volcanic activity or decreased sunspot activity
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