Tattapani Fm
Period:
Mesoproterozoic
Age Interval:
Early Calymmian
Province:
N.India Lesser Himalaya
Type Locality and Naming
Simla (Shali Basin), after Tattapani 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: Tattapani Member
Lithology and Thickness
Dolomite. Cherty dolostone, local phyllitised shale; 610 m
Lithology Pattern:
Dolomite
Relationships and Distribution
Lower contact
Conformable with the Sorghawari Fm.
Upper contact
Conformable with Makri Fm
Regional extent
From the Shali window to Slapper Bridge also at Bandla ridge
GeoJSON
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Fossils
Stromatolites-Colonella riasiensis, Conophyton cylindricus. Conophyton garganicus, Kussiella magna
Age
(~1580 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:
0.10
Beginning date (Ma):
1,580.00
Ending stage:
Calymmian
Fraction up in the ending stage:
0.14
Ending date (Ma):
1,572.00
Depositional setting
Shallow marine
Depositional pattern:
Additional Information
Compiler:
O.N. Bhargava & Birendra Singh.