Marada Fm
Period:
Neogene
Age Interval:
Langhian – Serravallian, Lb1
Province:
Libya
Type Locality and Naming
Lithology and Thickness
The formation is comprised of clastic sequences and cross-bedded fluvial sandstones, with intercalations of siltstone, clays, and trace gypsum. Members include the calcareous sandstones and sandy limestones of the Ar Rahlah, and the lower Qarat Jahannam.
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Fortino Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Qarqarish Fm
Regional extent
GeoJSON
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Fossils
Important vertebrate fossils have been recovered from this formation, including crocodiles, pigs, giraffes, and mastodons.
Age
Langhian – Serravallian
Age Span:
Beginning stage:
Langhian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
15.99
Ending stage:
Serravallian
Fraction up in the ending stage:
1.0
Ending date (Ma):
11.63
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.