Abstract

Synopsis Fossil Lithothamnium (calcareous algae) rhodoliths occurring in early Flandrian raised coastal deposits near Irvine, Ayrshire, are described, and their growth characteristics are analysed. The analysis indicates that much of the Lithothamnium was derived, probably from several nearby localities within the early Flandrian bay. Comparison of the Lithothamnium -bearing and associated sediments with sedimentary facies models developed from the study of modern Lithothamnium by Bosence ( Geol. J., 15 , 91–111; 1980) provides discussion regarding the palaeoenvironmental conditions at this locality during early Flandrian times.

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