Dhekiajuli Fm
Period:
Neogene
Age Interval:
Pliocene to Early Pleistocene.
Province:
North East Basins of India
Type Locality and Naming
Upper formation of Moran Gr.
[Figure 1: Geological set up and formation stratotypes of North East Basins (modified after Pandey and Dave, 1998)]
Lithology and Thickness
Coarse-grained sandstone. Massive-bedded coarse sands with few clay interbeds. Its thickness is about 1300 – 2100 m.
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
The formation is conformably underlain by the Namsang Fm.
Upper contact
The formation is unconformably overlain by alluvial cover (called Alluvium Fm here for database-linking purposes)
Regional extent
Dhansiri Valley, Upper Assam Shelf
GeoJSON
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Fossils
No faunal reports.
Age
Pliocene to Early Pleistocene.
Age Span:
Beginning stage:
Gelasian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
2.19
Ending stage:
Calabrian
Fraction up in the ending stage:
0.5
Ending date (Ma):
1.29
Depositional setting
Depositional pattern:
Additional Information
Banglapedia (National Encyclopedia of Bangladesh as compiled by several geologists; http://en.banglapedia.org/index.php/Geological_Group-Formation; 2015)
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Compiler:
D.S.N Raju