Beduh Fm
Period:
Triassic
Age Interval:
Olenekian – Anisian, Iq4
Province:
Iraq
Type Locality and Naming
Column: N Iraq
Synonym:
Lithology and Thickness
Consists of shale and marl, sometimes silty, with subordinate thin limestone interbeds with sandstone streaks. Its red-brown-purple color makes it an excellent marker unit for field mapping, and thought to be related to volcanicity.
Lithology Pattern:
Pelagic marl
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Mirga Mir Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Geli Khana Fm
Regional extent
GeoJSON
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Fossils
Age
Olenekian – Anisian
Age Span:
Beginning stage:
Olenekian
Fraction up in beginning stage:
0.95
Beginning date (Ma):
246.86
Ending stage:
Anisian
Fraction up in the ending stage:
0.1
Ending date (Ma):
246.18
Depositional setting
Depositional pattern:
Additional Information
Compiler:
From S. Z. Jassim and J. C. Goff, Geology of Iraq, 2006. pg 105, Fig. 9-1: "Stratigraphic correlation of the Late Permian-Liassic Megasequence (AP6)."