Chulung La Fm
Period:
Paleogene
Age Interval:
early Eocene
Province:
NW Himalaya Zanskar-Spiti
Type Locality and Naming
Name derived from ChulungLa, Spanboth Valley Zanskar. Gaetani et al., 1986, Gaetani and Garzanti, 1991.
Lithology and Thickness
Nummulitic limestone, red shale/siltstone/slate and impure fine-grained sandstone, volcanic arenite. Thickness: 160 m thick (>160-200 m)
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
Conformable contact with Dibling Fm
Upper contact
Its upper contact is unconformable to alluvial
Regional extent
GeoJSON
null
Fossils
Planktonic foraminifers Marozovella velascoensis and M. aragonesis.
Age
Foraminifers imply presence of late Thanetian and Ypresian
Age Span:
Beginning stage:
Thanetian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
57.62
Ending stage:
Ypresian
Fraction up in the ending stage:
1.0
Ending date (Ma):
48.07
Depositional setting
The sequence testifies to the progradation of a fluvial-dominated deltaic system in a shallow lagoon. Sedimentary features indicates tropical climate and high sedimentation rates
Depositional pattern:
Additional Information
Compiler:
Birendra P. Singh (2009; Chapter 5 in Dr. Raju's Indian Plate stratigraphy monograph; ONGC Bull. 44, no. 2)