Sharawra Fm
Period:
Silurian
Age Interval:
Telychian - Homerian, Sa (1,2)
Province:
Saudi Arabia
Type Locality and Naming
Column: Saudi Arabia Outcrop; Saudi Arabia Subsurface. Contains Zubliyat Mbr, Nayyal Mbr, Khanafriyah Mbr, Jarish Mbr
Synonym:
Lithology and Thickness
It is further divided into Zubliyat Mbr, Nayyal Mbr, Khanafriyah Mbr, Jarish Mbr. Shallow marine shale and deltaic sandstone, siltstone and minor shale. Regressive progression characterized by a coarsening upward sequence with the sandstones becoming thicker from bottom to top, while the shales become thinner. [Need to get more details on Members.]
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Qusaiba Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Tawil Fm
Regional extent
GeoJSON
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Fossils
Age
Telychian - Homerian
Age Span:
Beginning stage:
Telychian
Fraction up in beginning stage:
0.9
Beginning date (Ma):
433.50
Ending stage:
Homerian
Fraction up in the ending stage:
0.7
Ending date (Ma):
427.90
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.