Abstract
Hamilton and Greenfield, in their recent investigation of the organic matter associated with the calcareous sediments of Biscayne Bay, Florida, concluded from the anomalous uptake of free amino-acids, and from the difficulties encountered in washing the sediment free of ninhydrin-positive substances, that some other organic compound must be entrapped within the particles of the sediment1. We are interested in the possibility that the organic substances postulated by Hamilton and Greenfield may be the same material as that which occurs in the Recent carbonate sediments of the Trucial Coast of the Persian Gulf, which is tentatively assumed to be a mucilaginous secretion of blue-green algae.
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References
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SHEARMAN, D., SKIPWITH, P. Organic Matter in Recent and Ancient Limestones and its Role in their Diagenesis. Nature 208, 1310–1311 (1965). https://doi.org/10.1038/2081310a0
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DOI: https://doi.org/10.1038/2081310a0
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