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Eghei Sandstone Formation
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Eghei Sandstone Fm base reconstruction

Eghei Sandstone Fm


Period: 
Ordovician, Cambrian

Age Interval: 
Fortunian – Floian, Lb3


Province: 
Libya

Type Locality and Naming

Column: Cyrenaica Basin

Synonym:


Lithology and Thickness

Conglomeritic base layer overlain by cross-bedded sandstone


Lithology Pattern: 
Coarse-grained sandstone


Relationships and Distribution

Lower contact

This is the oldest unit in the Cyrenaica Basin

Upper contact

Regionally, the schematic strat column indicates the next younger unit as Lori Sandstone Fm

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 

Fortunian – Floian

Age Span: 

    Beginning stage: 
Fortunian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
538.80

    Ending stage: 
Floian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
471.26

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.