Grand Turk Beach Sand
The band of black sand evident here is a zone that is carbon enriched. This sand is primarily calcium carbonate from
shells, coral, formanifera, and limestone with carbon rich organic debris. The black color is from the small particles of degraded plant material.
Significance in the Environment:
Greenberg, Gary, A GRAIN OF SAND: NATURE'S SECRET WONDER, Voyageur Press, 2008.
Welland, Michael, SAND: THE NEVER ENDING STORY, University of California Press, 2009.
(Good Information on the microscopy of sand, Great site for more information on microscopy in general)
(Good Information on Sand with links to more information on sand)
(Brief, very informative video on what can be learned from the shape of a sand grain.)