Past Changes in Physical Geography - San Francisco State...
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1 Past Changes in Physical Geography / Past Changes in Physical Geography / Plate Tectonics Plate Tectonics I. Continental Drift Early theory (Taylor 1908, Wegener 1910) Opposition II. Resurgence of C.D. as Plate Tectonics III. Current Model and Processes Midoceanic ridges - spreading Ocean trenches -- subduction IV. Geographic Changes Gondwana, Euramerica and Siberia Gondwana and Laurasia Pangea Split Again VI. Early Life Marine Dinosaurs Mammals K/T boundary Flowering Plants Past Changes in Past Changes in Physical Geography / Physical Geography / Plate Tectonics Plate Tectonics Dr. B. Holzman Barriers Geog 316 Fall 2006 SFSU Dr. B.A. Holzman For the exclusive use of students enrolled in GEOG 316 Fall 2006
Transcript of Past Changes in Physical Geography - San Francisco State...
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Past Changes in Physical Geography /Past Changes in Physical Geography /Plate TectonicsPlate Tectonics
I. Continental Drift Early theory (Taylor 1908, Wegener 1910) Opposition
II. Resurgence of C.D. as Plate Tectonics III. Current Model and Processes
Midoceanic ridges - spreading Ocean trenches -- subduction
IV. Geographic Changes Gondwana, Euramerica and Siberia Gondwana and LaurasiaPangeaSplit Again
VI. Early Life Marine Dinosaurs Mammals K/T boundary Flowering Plants
Past Changes in Past Changes in Physical Geography /Physical Geography /Plate TectonicsPlate Tectonics
Dr. B. Holzman
Barriers
Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
For the exclusive use of students enrolled in GEOG 316 Fall 2006
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Geologic Time ScaleGeologic Time Scale
Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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A revolutionary ideaA revolutionary ideafrom a meteorologistfrom a meteorologist
"Utter, damned rot!" said the president of the prestigious "Utter, damned rot!" said the president of the prestigious American Philosophical Society. American Philosophical Society. "If we are to believe [this] hypothesis, we must forget "If we are to believe [this] hypothesis, we must forget everything we have learned in the last 70 years and start all everything we have learned in the last 70 years and start all over again," said another American scientist. over again," said another American scientist. Anyone who "valued his reputation for scientific sanity" would Anyone who "valued his reputation for scientific sanity" would never dare support such a theory, said a British geologist. never dare support such a theory, said a British geologist.
Continental DriftBy Alfred Wegener
325 MYA
50 MYA
4-2 MYA
Doesn't the east coast of South America fit exactly against the west coast of Africa, as if they had once been joined?" wrote Wegener to his future wife in December 1910. "This is an idea I'll have to pursue."
Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Continental Drift
Land bridges ???
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Tectonics
Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Divergent plates: volcanos, new earth
Convergent plates : volcano and mtn building
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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The earth through timeThe earth through time
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Diplovertebron - a medium-sized semi-aquatic tetrapod length 1 to 1.5 metresMoscovian of Europe
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Ceolophysis dinosaurs within a conifer forest
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Marsupials move north-south
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
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500-270 MYA
245 MYA-present
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Geog 316 Fall 2006 SFSU Dr. B.A. Holzman
For the exclusive use of students enrolled in GEOG 316 Fall 2006
