DarlaVolcanics Fm
Period:
Neoproterozoic
Age Interval:
Ediacaran, 635 Ma
Province:
N.India Lesser Himalaya
Type Locality and Naming
Simla (Shali Basin), named after Darla 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 Volcanics
Lithology and Thickness
Mafic volcanics-slate.
Lithology Pattern:
Volcanics
Relationships and Distribution
Lower contact
Nonconformable with Shali Gr (Bandia Fm)
Upper contact
Nonconformable with Basantpur Fm
Regional extent
From Tattapani in the Sutlej valley to Darla.
GeoJSON
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Fossils
None
Age
Martin (2017) projects as older than Mandhali
Age Span:
Beginning stage:
Ediacaran
Fraction up in beginning stage:
0.0
Beginning date (Ma):
635.00
Ending stage:
Ediacaran
Fraction up in the ending stage:
0.2
Ending date (Ma):
615.76
Depositional setting
Submarine tholeiitic flows
Depositional pattern:
Additional Information
Represents post Shali rifting
Compiler:
O.N. Bhargava & Birendra Singh. Age estimates based on A.J. Martin, 2017. A review of Himalayan stratigraphy, magmatism, and structure. Gondwana Research 49 (2017) 42–80.