Sidi As Sid And Nefusa Tripolitania And Sirte Basin Fm
Period:
Cretaceous
Age Interval:
Province:
Libya
Type Locality and Naming
Column: Tripolitania And Sirte Basin
Lithology and Thickness
Sidi as Sid and Nefusa Fm LITHOLOGY= Members: 1. Nalut (or Garian) dolomite, composed of hard, crystalline dolomitic limestone with bands of chert concretions 2. Yifran marl, which soft, thinly bedded marly limestones and claystones and intercalations of bedded gypsum, deposited in lagoonal to low-energy neritic and 3. Ain (Ayn) Tobi limestone, which is gray and yellow limestones and dolomites with thin marly interbeds. CALIBRATION = Base of Cenomanian. 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:
Dolomitic limestone
Relationships and Distribution
Lower contact
Upper contact
Regional extent
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[19,30],[18,29],[19,28],[20,29],[19,30]]]]}}
Fossils
Age
Age Span:
Beginning stage:
Cenomanian
Fraction up in beginning stage:
0
Beginning date (Ma):
100.50
Ending stage:
Turonian
Fraction up in the ending stage:
0.5
Ending date (Ma):
91.65
Depositional setting
Depositional pattern:
Additional Information
long: 19 lat: 29
Compiler: