Daling Fm
Period:
Orosirian
Age Interval:
late Orosirian
Province:
Bhutan
Type Locality and Naming
Lesser Himalaya
Lithology and Thickness
Quartzite-rich, but dominated by schist and phyllite. Quartzite is thin- to medium-bedded, and medium-gray limestone interbeds are rare. (McQuarrie et al., 2008; Long et al., 2011A). Between 2.3 and 3.2 km-thick (Long et al., 2011A).
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Lower contact is gradational with Shumar Fm; which has a similar lithology.
Upper contact
Major unconformity (ca. 400 Ma) below Pangsari Fm
Regional extent
GeoJSON
null
Fossils
Age
Implied by Martin (2017) diagram to be largely coeval with upper part of Kuncha Fm of Nepal Lesser Himalaya
Age Span:
Beginning stage:
Orosirian
Fraction up in beginning stage:
0.7
Beginning date (Ma):
1,875.00
Ending stage:
Orosirian
Fraction up in the ending stage:
0.8
Ending date (Ma):
1,850.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extract from Legend to "Geologic Map of Bhutan" (Long, S., McQuarrie, N., et al., 2011, Journal of Maps). Age spans estimated from correlation diagrams in Martin, A.J. (2017, "A review of Himalayan stratigraphy, magmatism, and structure", Gondwana Research, 49: 42-80; http://dx.doi.org/10.1016/j.gr.2017.04.031), but these are often controversial.