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Dangardzong Formation
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Dangardzong Fm base reconstruction

Dangardzong Fm

Period: 
Cretaceous

Age Interval: 
Berriasian


Province: 
Nepal Tethyan Himalaya

Type Locality and Naming

Lower formation in Chukh Gr.

Synonym: Dangardzong Quartzite, (Chukh Unit was used by Gradstein et al., 1992)


Lithology and Thickness

Sandstone with minor shale and coal. Ca. 50 m.


Lithology Pattern: 
Sandstone


Relationships and Distribution

Lower contact

Overlies the Nupra Fm (Spiti Fm, Spiti Shale)

Upper contact

"The top of the unit is a locally rooted and pedogenized surface disconformably overlain by Neocomian deltaic volcaniclastics (Kagbeni Fm), yielding logs of Araucariacea and fronds of Cycadophytes; Bordet et al., 1967, 1971; Bassoullet and Mouterde, 1977).

Regional extent


GeoJSON

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Fossils


Age 


Age Span: 

    Beginning stage: 
Berriasian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
143.10

    Ending stage: 
Berriasian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
137.70

Depositional setting

"A drastic change in sedimentation from offshore shales to locally carbonaceous deltaic siliciclastics took place at Berriasian times, when dominant monocrystalline detrital quartz in the Dangardzong Quartzarenite testifies to upwarping of the Indian margin and erosion of exposed quartzose sedimentary rocks during the onset of an extensional tectonic phase; Garzanti and Pagni Frette, 1991; Gibling et al., 1994)."


Depositional pattern:  


Additional Information


Compiler:  

Merger of Garzanti (1999, "Stratigraphy and sedimentary history of the Nepal Tethys Himalaya passive margin", Jour. Asian Earth Sci., 17: 805-827] and Gradstein et al. (1991, "Mesozoic Tethyan strata of Thakkhola, Nepal: evidence for the drift and breakup of Gondwana." Palaeogeogr. Palaeoclim. Palaeoecol 88, 193-218)