Precipitation of Early Carbonate Cements

An extensive literature exists on the occurrence of early carbonate precipitates in marine sediments, where they are generally termed cements. Included in this literature are books devoted solely to carbonate cements (e.g., Bricker, 1971 Schneidermann and Harris, 1985) and numerous reviews (e.g., Milliman, 1974 Bathurst, 1974, 1975 Harris et al 1985). Many investigations have been largely descriptive in nature, focusing primarily on the distribution, mineralogy, and morphology of the cements. Here we will briefly summarize the major aspects of these observations, and we will concentrate on the chemical aspects of the formation of these precipitates. 

Author Fnvironment Evidence Area Micnte Fibrous Granular drunr Remarks 

Friedman shalow marine 79m N. Jersey A A cement promoted 

Land reef 75 teat Jamaica Mo Mg(i6) reel talus 

Pingitore oubaenai eipoaure Pleistocene reels Barbados A  

---