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Black phytokarst from Hell, Cayman Islands, British West Indies
被引:0
|作者:
Folk, Robert L.
[1
]
Roberts, Harry H.
[2
]
Moore, Clyde H.
[3
]
机构:
[1] Geology Department, University of Texas at Austin, Austin, TX 78712, United States
[2] Coastal Studies Institute, Louisiana State University, Baton Rouge, LA 70803, United States
[3] Geology Department, Louisiana State University, Baton Rouge, LA 70803, United States
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关键词:
Gravitational orientation;
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摘要:
Phytokarst is a distinctive landform resulting from a curious type of biologic erosion. Filamentous algae bore their way into limestone to produce black-coated, jagged pinnacles marked by delicate, lacy dissection that lacks any gravitational orientation. Ordinary rainfall-produced karst and littoral karst are characterized by flat-bottomed pans and vertically oriented flutes, thus differing from phytokarst. Algae attack by dissolving calcite preferentially to dolomite. © 1973 Geological Society of America.
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页码:2351 / 2360
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