Home Multi-Country Search About Admin Login
Cenozoic
Mesozoic
Paleozoic
Neoproterozoic
Mesoproterozoic
Paleoproterozoic

Search by
Select Region(s) to search
Hold Ctrl (Windows/Linux) or Command (Mac) to select multiple
Dumri Formation
Click to display on map of the Ancient World at:
Dumri Fm base reconstruction

Dumri Fm

Period: 
Neogene

Age Interval: 
early Miocene (Aquitanian)


Province: 
Nepal Lesser Himalaya

Type Locality and Naming

Tansen and lower Kali Gandaki region


Lithology and Thickness

" a thick succession of medium-grained, bluish-gray quartzose sandstone and red-purple and green shale with a total thickness of about 725 m. The amount of shale gradually increases from its lower to upper horizons. The sandstones belong to the quartzose wacke with a minor amount of carbonaceous matter.


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Disconformably contact with the underlying Bhainskati Fm (Oligocene is absent)

Upper contact

Disconformably overlain by the Siwalik Gr (Lower Siwalik Fm) foreland basin fill

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[80.69,29.05],[80.69,28.99],[82.16,28.29],[83.81,27.82],[85.31,27.01],[86.61,26.7],[87.8,26.7],[87.49,26.98],[85.91,27.2],[84.91,27.97],[84.24,28.17],[83.63,28.35],[82.48,28.63],[81.57,28.92],[80.69,29.05]]]]}}

Fossils


Age 

Early Miocene. Age span partly based on correlation to Pakistan units by K.S. Valdiya (2016; The Making of India; Springer Publ.)

Age Span: 

    Beginning stage: 
Aquitanian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
23.04

    Ending stage: 
Burdigalian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
18.22

Depositional setting

"The fluvial Dumri Formation was deposited in Early Miocene time, after the Eocene marine transgression. Its source area was lying to the north as indicated by crossbedding and imbricate pebbles (Sakai 1983, p. 59)"


Depositional pattern:  


Additional Information


Compiler:  

Descriptions from Megh Raj Dhital (2015, Geology of Nepal: Regional Perspective of the Classic Collided Orogen, Springer Publ., 499 pp.). 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.