112-pp23 - UNIVERSITY OF SOUTH ALABAMA Last time we...

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1 GY 112: Earth History Cambrian Explosion UNIVERSITY OF SOUTH ALABAMA Last time we covered… 1) World Paleogeography 2) Key Tectonic events The Paleozoic Part 1 Paleozoic Paleogeography Paleozoic Tectonics (Key Events) Broad deformation (Southern Gondwanna) Cambrian Taconic Orogeny* (NE) Ordovician Silurian Ouachita equivalent (South America) Caledonian Orogeny Acadian Orogeny* (E) Ouachita Orogeny (S) Antler Orogeny (W) Devonian Mississippian Pensylvannian Ural Orogeny Hercynian Orogeny Al eghenian Orogeny* (SE) Permian Asia/Gondwanna Europe North America Period Paleozoic Tectonics Cambrian Taconic Orogeny* (NE) Ordovician Silurian Acadian Orogeny* (E) Devonian Mississippian Pensylvannian Al eghenian Orogeny* (SE) Permian North America Period Together, the 3 orogenies produced the Appalachian mountains Today’s Agenda The Cambrian Explosion A) Why a Cambrian “explosion” B) Introducing our ancestors (recap…. kind of) (web notes 23)
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2 Phanerozoic Time Frame Paleozoic Time Frame Ediacaran (600 to 550 Ma) Neo- Proterozoic Cambrian (505 to 550 MA) Ordovician (441 to 505 MA) Silurian (418 to 441 MA) Devonian (362 to 418 MA) Mississippian (320 to 362 MA) Pennsylvanian (286 to 320 MA) Permian (245 to 286 MA) Paleozoic Period Era American System Paleozoic Time Frame Age of Ediacarans Ediacaran (600 to 550 Ma) Neo- Proterozoic Age of Marine Invertebrates Cambrian (505 to 550 MA) Age of Marine Invertebrates Ordovician (441 to 505 MA) Age of the Fishes Silurian (418 to 441 MA) Age of the Fishes Devonian (362 to 418 MA) Age of Trees Mississippian (320 to 362 MA) Age of Ferns Pennsylvanian (286 to 320 MA) Age of Amphibians
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This note was uploaded on 02/04/2012 for the course GLY 112 taught by Professor Haywick during the Spring '12 term at S. Alabama.

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112-pp23 - UNIVERSITY OF SOUTH ALABAMA Last time we...

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