PalkStrait EarlyCretaceous Fm
Period:
Cretaceous
Age Interval:
within Berriasian-Barremian
Province:
SriLanka Palk Strait
Type Locality and Naming
Palk Strait (between Sri Lanka and India); only in Delft well.
[Figure: Generalized geologic map of Sri Lanka (from Edirisooriya et al., 2016, Geol. Mag. 155:907-920)]
Lithology and Thickness
Claystone. No thickness given – recovered only in Delft well, but not drilled to basement
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Unknown; but probably on Precambrian basement.
Upper contact
Conformable with PalkStrait Aptian Fm
Regional extent
Found only in Delft 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
Palynofossils
Age
Neocomian (Barremian) to ? older
Age Span:
s
Beginning stage:
Valanginian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
137.70
Ending stage:
Barremian
Fraction up in the ending stage:
1.0
Ending date (Ma):
121.40
Depositional setting
Supralittoral (continental)
Depositional pattern:
Additional Information
Compiler:
Ravi Misra