Andam Fm
Period:
Ordovician, Cambrian
Age Interval:
Paibian – Floian, On1
Province:
Oman
Type Locality and Naming
Column: Oman Subsurface; Al Bashair Mbr, Barik Mbr, Mabrouk Mbr, Barakat Mbr; Uppermost formation in Mahatta Humaid Gr
Synonym:
Lithology and Thickness
It is further divided into Claystone and Limestone in Al Bashair Mbr, Sandstone Barik Mbr, Claystone in Mabrouk Mbr, Claystone and Sandstone in Barakat Mbr
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Miqrat-Mahwis Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Ghudun Fm
Regional extent
GeoJSON
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Fossils
Age
Paibian – Floian
Age Span:
Beginning stage:
Paibian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
496.44
Ending stage:
Floian
Fraction up in the ending stage:
0.7
Ending date (Ma):
473.01
Depositional setting
Depositional pattern:
Additional Information
Compiler:
From Forbes, G.A., Hansen, H.S.M., and Shreurs, J., 2010. Lexicon of Oman: Subsurface Stratigraphy. Gulf Petrolink, 371 pp. (plus enclosures and CD); and Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13. no. 4