Wadi Dukhan Fm
Period:
Cretaceous
Age Interval:
Maastrichtian, Lb3
Province:
Libya
Type Locality and Naming
Column: Cyrenaica Basin
Synonym:
Lithology and Thickness
Previously confused with the Tocra Limestone, this Maastrichian unit has now been classified as the Wadi Dukhan formation, which is overlain by the Tocra Limestone, which has been renamed the Apollonia Fm. This unit consists of brownish microcrystalline dolomites with very sparse fossil content.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Gerdes Al Abid Limestone Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Apollonia Fm
Regional extent
GeoJSON
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Fossils
Age
Maastrichtian
Age Span:
Beginning stage:
Maastrichtian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
69.11
Ending stage:
Maastrichtian
Fraction up in the ending stage:
1.0
Ending date (Ma):
66.04
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Chart derived from: USGS Correlation Chart and Columnar Section for Rocks in Libya, 1963. Descriptions from: Hallet, Don: Petroleum Geology of Libya, 2002.