Abstract
The distribution of dolomite in deep marine sediments as a function of time was determined for the Cretaceous and Cenozoic, 150 Ma to present, using data from 1,142 DSDP samples. The general distribution patterns for the Atlantic and Indo-Pacific are similar. Their curves show a maximum in the Miocene, minimum in Paleogene, and 2 maxima in the Cretaceous separated by a Cenomanian low. The less time-extensive data of the Gulf-Caribbean and Mediterranean have a Miocene maximum. Red Sea data peak in late Miocene to early Pliocene. The general similarity End_Page 281------------------------------ of the patterns from such diverse areas and sediment types suggests that the distribution of dolomite in these sediments is not due to random groupings and may be a consequence of a common global cause. End_of_Article - Last_Page 282------------
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