Biyadh Sandstone Fm
Period:
Cretaceous
Age Interval:
Hauterivian – Aptian, Sa1
Province:
Saudi Arabia
Type Locality and Naming
Column: Saudi Arabia Outcrop, Saudi Arabia Subsurface
Synonym:
Lithology and Thickness
Brown to buff, medium to coarse-grained quartz sandstone, in part cross bedded, with subordinate red shale; several horizons strongly ferruginous, weathering to give chips of black sandy ironstone.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Buwaib Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Sallah Fm (Saudi Arabia Outcrop) or Shu'alba Fm (Saudi Arabia Subsurface).
Regional extent
GeoJSON
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Fossils
Age
Hauterivian – Aptian
Age Span:
Beginning stage:
Hauterivian
Fraction up in beginning stage:
0.64
Beginning date (Ma):
128.70
Ending stage:
Aptian
Fraction up in the ending stage:
0.4
Ending date (Ma):
118.12
Depositional setting
Depositional pattern:
Additional Information
Compiler:
From Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4. Steineke et. al., 1958, Page 1309