Page 57 - Carbonate Platforms Facies, Sequences, and Evolution

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Fig. 11. Photomicrographs of microfacies 2, 3 and 4. (a) Bioclastic oncolite packstone-wackestone microfacies (micr
concentric coating followed by an asymmetric coating. This implies an initial phase of continual agitation followed
immediately underlying lower shoal sequence boundary. Negative print of a peel. Scale bar= 1 ern. (b) Early marin
From upper part of foreset in shoal sequence 3 at Hope Cement Works Quarry. Photomicrograph of a peel. Scale bar =
grainstone-packstone microfacies (microfacies 2). From shoal sequence 3 at Hope Cement Works Quarry. Photomicrogra
Biociast wackestone microfacies (microfacies 4). Bed immediately overiying shoal sequence 3 at Hope Cement Works Qu
bar= 250 f!m.