Home Multi-Country Search About Admin Login
Cenozoic
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Early Paleozoic

Search by
Select Region(s) to search
Hold Ctrl (Windows/Linux) or Command (Mac) to select multiple
Ras el Hamia Formation
Click to display on map of the Ancient World at:
Ras el Hamia Fm base reconstruction

Ras el Hamia Fm


Period: 
Triassic

Age Interval: 
Induan – Olenekian, Lb1


Province: 
Libya

Type Locality and Naming

Column: Tripolitania and Sirte Basin

Synonym:


Lithology and Thickness

Sandy claystone.


Lithology Pattern: 
Sandy_claystone


Relationships and Distribution

Lower contact

This is the oldest unit in the Tripolitania and Sirte Basin

Upper contact

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

USGS chart places this formation at the base of the Buntsandstein stage in the lower Triassic. Induan - Olenekian

Age Span: 

    Beginning stage: 
Induan

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
251.90

    Ending stage: 
Olenekian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
246.70

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.