Gadvan Fm
Period:
Cretaceous
Age Interval:
Hauterivian – Aptian, Ir (1,3)
Province:
Iran
Type Locality and Naming
Column: Zagros belt (general), Column: Iran East
Synonym:
Lithology and Thickness
350 feet of low-weathering, gray to green to brownish yellow marl or shale, and, dark gray, argillaceous limestone. Pelecypods, gastropods, and, echinoids are common throughout.
Lithology Pattern:
Pelagic marl
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Fahliyan Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Dariyan Fm
Regional extent
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[46.14,35.51],[46.27,35.21],[46.08,34.99],[46.06,34.76],[45.68,34.43],[45.67,33.97],[45.98,33.77],[46.5,33.04],[47.67,32.53],[48.07,31.88],[48.06,31.11],[49.27,30.6],[50.32,30.21],[51.11,28.9],[52.49,27.64],[53.82,26.86],[54.7,26.57],[56.39,27.37],[57.04,27.03],[57.41,25.81],[58.36,25.63],[61.2,26.51],[62.63,27.27],[60.87,30.06],[60.74,31.52],[60.35,34.09],[60.87,34.93],[58.46,35.3],[56.64,34.8],[58.6,28.19],[46.14,35.51]]]]}}
Fossils
Age
Hauterivian – Aptian
Age Span:
Beginning stage:
Hauterivian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
129.55
Ending stage:
Aptian
Fraction up in the ending stage:
0.4
Ending date (Ma):
118.12
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4. James at. al., 1965, page 2204