Gratidao Fm
Period:
Paleogene
Age Interval:
early Eocene
Province:
Offshore and Coastal Region (Gabon-Congo-Angola)
Type Locality and Naming
Offshore Angola region (General)
Synonym:
Lithology and Thickness
Shale with interbeds of chalk, becoming just shale and siltstone upwards
Lithology Pattern:
Shallow-marine marl
Relationships and Distribution
Lower contact
Upper contact
Regional extent
Offshore Kwanza basin of Angola region (General)
GeoJSON
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Fossils
Age
early Eocene
Age Span:
Beginning stage:
Ypresian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
56.00
Ending stage:
Ypresian
Fraction up in the ending stage:
1.0
Ending date (Ma):
48.07
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Rebecca Bobick (and Jim Ogg), modified from Figure in Brownfield, M.E. and Charpentier, R.R., "Geology and Total Petroleum Systems of the West-Central Coastal Province (7203), West Africa", US Geological Survey Bulletin 2207-B