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Gerdes Al Abid Limestone Formation
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Gerdes Al Abid Limestone Fm base reconstruction

Gerdes Al Abid Limestone Fm


Period: 
Cretaceous

Age Interval: 
Maastrichtian – Campanian, Lb3


Province: 
Libya

Type Locality and Naming

Column: Cyrenaica Basin

Synonym:


Lithology and Thickness

Limestone


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

Regionally, the schematic strat column indicates the next older unit as

Upper contact

Regionally, the schematic strat column indicates the next younger unit as

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[16.77,28.92],[17.75,23.9],[18.77,23.18],[19.83,23.81],[20.54,23.72],[21.92,24.26],[23.03,26.98],[23.27,30.13],[21.58,30.61],[20.73,31.1],[20.43,32.4],[20.36,33.26],[19.37,33.11],[18.07,33.46],[18.09,34.15],[17.64,35.35],[16.6,34.88],[14.9,33.89],[13.92,32.67],[15.59,31.26],[15,30.64],[16.77,28.92]]]]}}

Fossils


Age 

Maastrichtian - Campanian

Age Span: 

    Beginning stage: 
Campanian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
83.65

    Ending stage: 
Maastrichtian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
69.11

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.