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Deep-Sea Authigenic Calcite and Dolomite

Enrico Bonatti
Science
New Series, Vol. 153, No. 3735 (Jul. 29, 1966), pp. 534-537
Stable URL: http://www.jstor.org/stable/1719901
Page Count: 4
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Deep-Sea Authigenic Calcite and Dolomite
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Abstract

Crystals of calcite and, in one case, of dolomite up to 90 μ m in size are dispersed in pelagic red clay at several sites on the floor of the South Pacific Ocean. They were analyzed by microscopic, x-ray diffraction, electron x-ray microprobe, and oxygen isotopic techniques. These carbonates are authigenic and were probably precipitated from hydrothermal solutions connected with deep-sea volcanic activity.

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