PalkStrait LateMiocene Fm
Period:
Neogene
Age Interval:
Late Miocene to ?Pliocene
Province:
SriLanka Palk Strait
Type Locality and Naming
Palk Strait (between Sri Lanka and India); composite of Wells Delft, PalkBay and Pesalai.
[Figure: Generalized geologic map of Sri Lanka (from Edirisooriya et al., 2016, Geol. Mag. 155:907-920)]
Lithology and Thickness
Sandy limestone. 100 m (Delft well) to 30 m (PalkBay well) of arenaceous limestone (packstone)
Lithology Pattern:
Sandy limestone
Relationships and Distribution
Lower contact
Conformable on PalkStrait MiddleMiocene Fm
Upper contact
Seafloor
Regional extent
Found in Delft, PalkBay and Pesalai wells of Palk Strait (between Sri Lanka and southern tip of India)
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[78.95,10.03],[80.07,10.02],[80.03,9.05],[78.91,9.06],[78.95,10.03]]]]}}
Fossils
Benthic foraminifers: Opercullina, Amphistegina
Age
Late Miocene to ? Pliocene
Age Span:
s
Beginning stage:
Tortonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
11.63
Ending stage:
Gelasian
Fraction up in the ending stage:
1.0
Ending date (Ma):
1.80
Depositional setting
Shallow inner shelf
Depositional pattern:
Additional Information
Compiler:
Ravi Misra