Ezanga North Gabon Subbasin East Fm
Period:
Cretaceous
Age Interval:
Province:
Gabon General lithology
Type Locality and Naming
Column: North Gabon Subbasin East
Lithology and Thickness
Ezanga Fm:
LITHOLOGY = The region-wide salt unit is represented in the onshore parts of the Interior, North, and South Gabon subbasins by the Ezanga Formation, as much as 800 m thick, whereas in the offshore part of the Gabon Basin, the Ezanga may be as much as 1,000 m thick. The true thickness is difficult to estimate because of the extensive salt deformation. It consists of mainly carnallite and minor amounts of bischofite.
CALIBRATION = 94% up in the Aptian.
REFERENCE = Figure 10, U.S. Geological Survey "Geology and Total Petroleum Systems of the West-Central Coastal Province (7203), West Africa" Bulleton 2207-B
LITHOLOGY = The region-wide salt unit is represented in the onshore parts of the Interior, North, and South Gabon subbasins by the Ezanga Formation, as much as 800 m thick, whereas in the offshore part of the Gabon Basin, the Ezanga may be as much as 1,000 m thick. The true thickness is difficult to estimate because of the extensive salt deformation. It consists of mainly carnallite and minor amounts of bischofite.
CALIBRATION = 94% up in the Aptian.
REFERENCE = Figure 10, U.S. Geological Survey "Geology and Total Petroleum Systems of the West-Central Coastal Province (7203), West Africa" Bulleton 2207-B
Lithology Pattern:
Gypsum-Anhydrite
Relationships and Distribution
Lower contact
Upper contact
Regional extent
GeoJSON
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Fossils
Age
Age Span:
Beginning stage:
Aptian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
117.30
Ending stage:
Albian
Fraction up in the ending stage:
0
Ending date (Ma):
113.20
Depositional setting
Depositional pattern:
Additional Information
long: 9 lat: 0
Compiler: