Subansiri Fm
Period:
Neogene
Age Interval:
Early Pliocene
Province:
Arunachal Pradesh
Type Locality and Naming
The type section is in Subansiri river section.
Lithology and Thickness
Sandstone. Salt and pepper textured, coarse- to medium-grained, grey, soft, thick-bedded to massive, gray micaceous sandstones.
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Gradational contact with the Dafla Fm.
Upper contact
Gradational contact with the Kimin Fm.
Regional extent
Easternmost Lesser Himalayas.
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[91.65,27.77],[91.56,27.64],[91.64,27.5],[91.98,27.49],[92.09,27.3],[92.02,27.08],[92.16,26.88],[92.61,27.07],[93.04,26.92],[93.54,26.94],[93.82,27.21],[94.24,27.52],[94.24,27.62],[94.42,27.57],[95.32,28.1],[95.86,28.28],[96.41,28.15],[97.05,27.78],[97.31,27.9],[97.34,28.22],[96.64,28.61],[96.42,28.47],[96.63,28.7],[96.04,29.41],[95.24,29.09],[94.66,29.32],[94.32,29.05],[93.44,28.66],[92.66,28.15],[92.42,27.82],[92.25,27.89],[91.65,27.77]]]]}}
Fossils
Microfloral assemblages of Proxapertites assamicus, Dandotiaspora telonata and Palmidites plicatus.
Age
Early Pliocene.
Age Span:
Beginning stage:
Zanclean
Fraction up in beginning stage:
0.0
Beginning date (Ma):
5.34
Ending stage:
Zanclean
Fraction up in the ending stage:
1.0
Ending date (Ma):
3.60
Depositional setting
Depositional pattern:
Additional Information
Compiler:
D.S.N Raju