Sorghawari Fm
Period:
Mesoproterozoic
Age Interval:
Early Calymmian
Province:
N.India Lesser Himalaya
Type Locality and Naming
Simla (Shali Basin), after Sorghawari village. [Original Publication: Srikantia, S. V. and Sharma, R.P. 1976.Geology of the Shali Belt and adjoining areas. Memoirs Geological Survey of India, 106 (1), 31-166.]
Synonym: Sorghawari Member
Lithology and Thickness
Limestone with shale partings; 460 m
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Conformable with the Khatpul Fm.
Upper contact
Conformable with the Tattapani Fm.
Regional extent
Mainly in Shali Window to Bilaspur section
GeoJSON
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Fossils
Baicalia. Colonella
Age
(~1585 Ma). Age span from relative thicknesses of the 8 component formations to the 3300 m total span of the Shali Gr (see that entry for explanation)
Age Span:
Beginning stage:
Calymmian
Fraction up in beginning stage:
0.07
Beginning date (Ma):
1,586.00
Ending stage:
Calymmian
Fraction up in the ending stage:
0.10
Ending date (Ma):
1,580.00
Depositional setting
Subtidal
Depositional pattern:
Additional Information
Compiler:
O.N. Bhargava & Birendra Singh.