2005 Salt Lake City Annual Meeting (October 1619, 2005)
Paper No. 75-7
Presentation Time: 9:40 AM-10:00 AM

THE MYSTIC OF BEACHROCK

SHINN, Eugene A., Center for Coastal and Watershed Studies, U.S. Geol Survey, 600 4th St. S, St. Petersburg, FL 33701, eshinn@usgs.gov and SWART, P.K., Div. Marine Geology & Geophysics, Univ of Miami/RSMAS, 4600 Rickenbacker Cswy, Miami, FL 33149

Beachrock was the interface of a lively controversy between geologists and mystics.

While geologists pondered the origin and distribution of beachrock, mystics viewed one of the occurrences in a quite different way. Off the Island of Bimini on the eastern margin of Great Bahama Bank, a linear series of rectangular slabs of limestone in water depths of 5-7 m were interpreted as the submerged remnants of a road, part of the fabled city of Atlantis. This audacious interpretation attracted an enthusiastic following of believers from the world's community of alternative thinkers.

Geologic analysis of the limestone showed that the laminated structure is the same as that found on beaches , in other words - beachrock. The rectangular blocks are a natural result of the weakness of a thin slab floating on unconsolidated sand, like the fracturing of ice on a pond.

2005 Salt Lake City Annual Meeting (October 1619, 2005)
General Information for this Meeting
Session No. 75
Comparative Carbonate Sedimentology I: A Tribute to the Career of R.N. Ginsburg
Salt Palace Convention Center: 151 G
8:00 AM-12:00 PM, Monday, 17 October 2005

Geological Society of America Abstracts with Programs, Vol. 37, No. 7, p. 182

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