Geo101.19.Phanerozoic[1]

Geo101.19.Phanerozoic[1] - The end of the Proterozoic and...

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1 The end of the Proterozoic …and the beginning of the Phanerozoic The end of the Proterozoic …and the beginning of the Phanerozoic Orientation of continents in Rodinia supercontinent at the close of the Proterozoic or Precambrian. http://astro.sau.edu/~earth/html/md-tectonics.html. …Phanerozoic Continental Cratons Phanerozoic means “visible life”…a name reFecting the appearance of organisms with hard mineralized shells or skeletons…it is these that skeletons that yield well- preserved fossils easily recognizable in the rock record. We refer to the past 545 Ma as the Phanerozoic Era… …during this 545 Ma, continents begin to take the shape we know them by today…and life on Earth diversi±es… Gondwanaland …we divide the Phanerozoic into the Paleozoic, Mesozoic and Cenozoic
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2 …the Early Phanerozoic …the early Paleozoic Gondwana …the Early Phanerozoic …the early Paleozoic Gondwana Early Paleozoic (545 Ma to 440 Ma)… Gondwanaland 300 Ma Taconic Orogeny North America during the Early Paleozoic (Cambrian)… Gondwanaland 300 Ma North American Craton North America during the Early Paleozoic… Gondwanaland 300 Ma …the middle Ordovician Taconic Orogeny, the frst stage oF the building oF the Appalachians Gondwanaland 300 Ma
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3 Middle to Late Paleozoic (440 Ma to 250 Ma). .. Gondwanaland 300 Ma Permian Carboniferous Devonian Silurian …North America in the M.-L. Paleozoic Devonian 300 Ma Silurian North American Craton In the late Paleozoic (Carboniferous-Permian) the continents joined together to form the supercontinent Pangea
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Geo101.19.Phanerozoic[1] - The end of the Proterozoic and...

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