Carbonate skeletons of many Recent and fossil species show morphologic characters which can be related to specific factors in their environments. Similarly, the mineralogy and chemistry of the carbonate from the skeletons are known to reflect a variety of ecologic factors.
Few attempts have been made to utilize the ecologic information from the physical and chemical properties of skeletal carbonates in the analyses of depositional environments of carbonate rocks.
Data are presented to illustrate their usefulness in recognizing certain ecologie factors in the depositional environment of carbonate rocks. In this presentation, particular emphasis is placed on comparative functional morphology of carbonate skeletons. Ecologie factors to be considered are habitat, derivation of constituent grains, rates of sedimentation, turbidity, micro-hydrography, consistency of the sediments, temperature, and depth of the accumulating sediments.
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Depositional Environments in Carbonate Rocks
One of the principal tasks of the geologist is to determine the depositional environments in which rocks are deposited. Although regional environmental interpretations of transgressions and regressions, movements of shoreline, and gross aspects of continental and marine sedimentation have been understood since stratigraphy became an established branch of geology, only recently has the science of sedimentology come up with criteria for environmental recognition of specific outcrops, wells, or even hand samples. This observation is especially true of carbonate rocks. The papers in this volume will provide a key to the subject of recognition of depositional environments in carbonate rocks. Based on a symposium held in Los Angeles, California, on April 1967, at the joint meeting of AAPG and SEPM.