Khaira Fm
Period:
Mesoproterozoic
Age Interval:
Early Calymmian
Province:
N.India Lesser Himalaya
Type Locality and Naming
Simla (Shali Basin), named after the village Khaira. [Original Publication: West, W.D. (1939) Structure of the Shali Window near Simla. Records Geological Survey of India, v.74, pp.133-163.]
Synonym: Khaira Quartzite
Lithology and Thickness
Sandstone. Quartzarenite; 380 m
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Conformable with the underlying Ropri Fm.
Upper contact
Conformable with the overlying Khatpul Fm.
Regional extent
Within the Shali Window in the Sutlej Valley
GeoJSON
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Fossils
None
Age
(~1595 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:
0.03
Beginning date (Ma):
1,594.00
Ending stage:
Calymmian
Fraction up in the ending stage:
0.05
Ending date (Ma):
1,590.00
Depositional setting
Shallow marine to beach
Depositional pattern:
Additional Information
Compiler:
O.N. Bhargava & Birendra Singh.