Mapping & Petrography Appendices · appendix-10

Petrography — Sheet 10

The Embry and Klovan classification table is a reference framework rather than a new observation. Its correct use requires deciding whether the rock is mud- or grain-supported, whether allochems exceed ten percent, whether components larger than two millimetres are significant and whether organisms bound the sediment during deposition.

Petrography — Sheet 10

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Geological interpretation and evidential boundary

The Embry and Klovan classification table is a reference framework rather than a new observation. Its correct use requires deciding whether the rock is mud- or grain-supported, whether allochems exceed ten percent, whether components larger than two millimetres are significant and whether organisms bound the sediment during deposition. The plotted or selected wackestone field is consistent with the BG matrix-supported micrograph, but no classification chart can resolve a scale error or diagenetic overprint. The table is therefore most useful when the decision path is stated explicitly beside the modal data. Depositional-energy and reef interpretations should follow only after texture, taphonomy and field architecture are integrated.

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appendix-10