PalkStrait Aptian Fm
Period:
Cretaceous
Age Interval:
Aptian
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
Sandstone. 1500 m of Sandstone with minor siltstones
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Conformable on PalkStrait EarlyCretaceous Fm claystone
Upper contact
Unconformity to overlying PalkStrait LateCretaceous Fm
Regional extent
Found only in Delft well 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
No details given
Age
Aptian
Age Span:
s
Beginning stage:
Aptian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
121.40
Ending stage:
Aptian
Fraction up in the ending stage:
1.0
Ending date (Ma):
113.20
Depositional setting
Not given; but would seem to be continental basin-fill
Depositional pattern:
Additional Information
Compiler:
Ravi Misra