Page 305 - Carbonate Facies in Geologic History

292 Shoaling upward Shelf Cycles and Shelf Dolomitization

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10
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110
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o 50 100km I
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gt~,:l Within inner area, f:i:"d More than 25% carbonate is lime sand.
more than 50"10 carbonate is lime sand.
W II f20i-Percentage anhydrite of total cycle
1
_'1.<;\.- Evaporite percentage of total cycle e Th}-Thickness of anhydrite
m Practically all carbonate IS dolomi e. \:<l;H Edge line of dense brown lime mudstone
facies
Thickness of cycle (including anhydrite) varies from 300-200feet(91·5 -61 m) thinning away from
west central area.