3_Marine_Geology_1

3_Marine_Geology_1 - Marine Geology Main Sea Floor Features...

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1 Marine Geology Main Sea Floor Features Development of Plate Tectonics • Initially Proposed by Alfred Wegener as “Continental Drift” in 1915 – Not well acepted because while the evidence that drift had occurred was overwhelming, the proposed forcing mechanism (tidal action of moon) was certainly wrong. • Finally accepted when “Sea-Floor Spreading” was discovered in Post-WWII exploration. – This was the correct forcing mechanism that Alfred Wegener had missed
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2 Plate Tectonics the steady accumulation of evidence leading to the birth of a new theory… Continental Drift Fit of Continents Many naturalists had noticed the apparent fit of the continents , including Englishman Francis Bacon and Italian geographer Antonio Snider-Pellegrini , whose 1858 map is shown above.
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3 Paleobiogeography He noted specifically that it was as if pieces of a torn newspaper were placed back together and all the letters lined up - one could not help but conclude that the pieces at one point time formed a whole page. Alfred Wegener
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This note was uploaded on 09/28/2008 for the course EAS 1540 taught by Professor Monger during the Fall '07 term at Cornell.

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3_Marine_Geology_1 - Marine Geology Main Sea Floor Features...

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