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Ideas start to form…. Cordilleras - “I feel sure they formerly consisted of a chain of Volcanoes from which enormous streams of Lava were poured forth at the bottom of the sea…these Volcanoes must have formed Islands.” Burkhardt 46. - PowerPoint PPT Presentation
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Ideas start to form…
Cordilleras -“I feel sure they formerly consisted of a chain of Volcanoes from which enormous streams of Lava were poured forth at the bottom of the sea…these Volcanoes must have formed Islands.” Burkhardt 46
http://pages.britishlibrary.net/charles.darwin2/beagle_images/pl60.jpg
The Theory -
Shallow vs. Deep
Rocky vs. Sediment
Uplift vs. Subsidence
Mapping
Three Distinct Forms
Structure and Distribution of Coral Reefs
Uplifted Coral Reef in Solomon Islands
http://www.iris.edu/about/ENO/iows/6_2004a.htm
Structure and Distribution of Coral Reefs
Structure and Distribution of Coral Reefs, Darwin, http://www.uwgb.edu/dutchs/geophoto/coastal/TAHITI.jpg
The Atoll
Structure and Distribution of Coral Reefs, Darwin, http://www.youconnect.co.uk/english/2003-10/images/earth/eye.gif
Maps
Structure and Distribution of Coral Reefs, Darwin
Distribution of Reefs
Structure and Distribution of Coral Reefs, Darwin
Bright Blue – Atolls or Lagoon Islands
Pale Blue – Barrier Reefs
Red – Fringing Reefs
Darwin’s Success
“I think my book will be popular to a certain extent…why I think so is because I have found in conversation so great and surprising interest amongst such men and some o-scientific men on subject; and all my chapters are not nearly so dry and dull as that which you have read on Geographical Distribution.” Buckhardt 201
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