File:Britannica Coral-reefs Atoll Formation.png
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DescriptionBritannica Coral-reefs Atoll Formation.png |
English: A diagram showing Charles Darwin's theory of atoll formation via coral formation on subsiding rocks. |
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Date | |||||
Source | Encyclopaedia Britannica (11th ed.), v. 7, p. 133 | ||||
Author | Unknown authorUnknown author | ||||
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Legend:
Diagram showing the formation of an atoll during subsidence. (After C. Darwin.) The lower part of the figure represents a barrier reef surrcunding a central peak.
A,A, outer edges of the barrier reef at the sea-level; the coconut trees indicate dry land formed on the edges of the reef.
L L, lagoon channel.
A',A', outer edges of the atoll formed by upgrowth of the coral during the subsidence of the peak.
L', lagoon of the atoll.
The vertical scale is considerably exaggerated as compared with the horizontal scale.
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current | 19:17, 16 July 2009 | 958 × 426 (17 KB) | Bob Burkhardt (talk | contribs) | {{Information |Description={{en|A diagram showing Charles Darwin's theory of atoll formation via coral formation on subsiding rocks.}} |Source=Encyclopaedia Britannica (11th ed.), v. 7, p. 133 |Date=1911 |Author=unknown |Permission={{PD-Britannica}} | |
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