#17
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I am sorry, I couldn't find anything dealing with the Bluehole at Lochabar. I suspect there are quite a few off Long Island as you say. I don't know this for a fact but I suspect Long Island by far doesn't have a monopoly on blue holes. I would guess Andros by shear size might have that distinction. I would think the Bahamian Plateau has hundreds of blue holes of varying sizes. The conventional wisdom on blue hole formation seems to involve conditions when sea levels were far lower and the carbonate rock mass comprising the Bahamas Plateau was exposed far higher above water than at present. Chemical factors ranging from acidic rain, tannins from decomposing vegetation and roots, erosion, and other weather processes attacked the rock mass through fissures and created vertical voids. Glaciation receded, sea levels rose to contemporary elevations leaving flooded cylindrical voids in the rock, blue holes. Given the mechanism of formation and abundance of carbonate rocks over the Bahamas it is no surprise that there are so many blue holes.
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FKA, Inc. transcribed by: Rick Iossi Last edited by ricki; 07-03-2007 at 09:10 PM. |
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