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Greir Bu-Hascisc Formation
Click to display on map of the Ancient World at:
Greir Bu-Hascisc Fm base reconstruction

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.