Atoll_forming-Barrier_reef.png
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| Description |
Internationalization of the diagram:Atoll forming.
1 =Volcanic Island 2 =Fringing reef 3 =Barrier reeef Caption: Coral atolls develop from reefs fringing volcanic islands. As first hypothesized by Charles Darwin, and confirmed by ocean drilling done by British scientists a century ago, reefs fringing volcanic islands build vertically to sea level, forming steepwalled barrier reefs. As a volcanic island subsides, or sinks, with time, the growing reef keeps pace with the rising water level. When the island eventually submerges, the ring-shaped reef forms an atoll with a central lagoon. |
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This is a
retouched picture
, which means that it has been digitally altered from its original version. Modifications:
Cropped barrier reef
. The original can be viewed here:
Atoll forming-i18.png
:
. Modifications made by
Geronimo20
.
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This image is in the
public domain
in the United States because it only contains materials that originally came from the
United States Geological Survey
, an agency of the
United States Department of the Interior
. For more information, see
the official USGS copyright policy
.
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Original upload log
This image is a derivative work of the following images:
-
File:Atoll_forming-i18.png
licensed with PD-USGov-USGS
- 2006-05-29T18:32:53Z Zimbres 1667x2423 (498020 Bytes) {{Information |Description= Internationalization of the diagram:Atoll forming. '''1'''=Volcanic Island '''2'''=Fringind reef '''3'''=Barrier reeef |Source=http://commons.wikimedia.org/wiki/Image:Atoll_forming.jpg |Date= |Aut
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