Greir Bu-Hascisc Fm
Period:
Paleogene
Age Interval:
Chattian, Lb (1,3)
Province:
Libya
Type Locality and Naming
Column: Tripolitania and Sirte Basin, Column: Cyrenaica Basin
Synonym:
Lithology and Thickness
Marly limestone overlain by dolomite.
Lithology Pattern:
Dolomitic limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Dur Al Abd Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Fortino Fm. In Cyrenaica Basin it is Beddahach Fm
Regional extent
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[13.93,32.66],[15.59,31.26],[15.01,30.64],[16.75,28.88],[17.75,23.89],[18.75,23.13],[19.91,23.81],[20.56,23.71],[21.92,24.23],[22.63,26.01],[24.96,26.94],[25.01,29.2],[24.69,30.15],[24.98,30.69],[24.84,31.45],[23.1,31.95],[22.95,31.76],[21.04,32.42],[20.43,32.4],[20.35,33.25],[19.37,33.1],[18.07,33.45],[18.08,34.14],[17.63,35.32],[16.6,34.85],[14.91,33.87],[13.93,32.66]]]]}}
Fossils
Age
Age Span:
Beginning stage:
Chattian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
27.29
Ending stage:
Chattian
Fraction up in the ending stage:
1.0
Ending date (Ma):
23.04
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.