Piram Bed Fm
Period:
Neogene
Age Interval:
latest Miocene-Pliocene
Province:
W.India Saurashtra Basin
Type Locality and Naming
Offshore: "In the western margin of the Khambhat gulf, there is a horizon of conglomeratic sandstone and siltstone that forms the island of Piram." (after Valdiya, 2016, The Making of India)
[Figure 1: Index Map of Saurashtra Basin (from dghindia.gov.in)]
Lithology and Thickness
conglomeratic sandstone and siltstone
[Figure 2: Generalized Stratigraphy of Saurashtra Basin (from dghindia.gov.in)]
Lithology Pattern:
Conglomerate
Relationships and Distribution
Lower contact
Overlays the Dwarka Fm
Upper contact
Underlies the Porbandar Fm
Regional extent
Surface exposure seems limited to Piram island.
GeoJSON
null
Fossils
"A rich assemblage of vertebrates appeared in the Late Miocene sediments of the Piram Island." (Valdiya, 2016, The Making of India)
Age
Indicated on Dr.Raju's chart as Messinian through Pliocene (uncertain)
Age Span:
Beginning stage:
Messinian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
6.87
Ending stage:
Gelasian
Fraction up in the ending stage:
0.3
Ending date (Ma):
2.35
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Information extracted from Valdiya, 2016, The Making of India