Wan Kasa Fezzan Basin Fm
Period:
Devonian
Age Interval:
Province:
Libya
Type Locality and Naming
Column: Fezzan Basin
Lithology and Thickness
Wan Kasa Fm LITHOLOGY= Marine transgressive sequence, this formation is composed of alternating grey to reddish ferruginous siltstones to shales, with thin layers of gypsum. The siltstones and sandstones coarsen upward into massive-bedded sandstone at the top. Depositional environment was tide-controlled sediment-laden sub-tidal currents to tidal flats (transgressive). CALIBRATION = Base of Emsian. REFERENCE = Chart derived from: USGS Correlation Chart and Columnar Section for Rocks in Libya, 1963. Descriptions from: Hallet, Don: Petroleum Geology of Libya, 2002.
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
Upper contact
Regional extent
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[15,29],[14,28],[15,27],[16,28],[15,29]]]]}}
Fossils
Age
Age Span:
Beginning stage:
Emsian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
407.30
Ending stage:
Givetian
Fraction up in the ending stage:
0
Ending date (Ma):
385.30
Depositional setting
Depositional pattern:
Additional Information
long: 15 lat: 28
Compiler: