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PalkStrait Eocene Formation
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PalkStrait Eocene Fm base reconstruction

PalkStrait Eocene Fm

Period: 
Paleogene

Age Interval: 
Eocene


Province: 
SriLanka Palk Strait

Type Locality and Naming

Palk Strait (between Sri Lanka and India); composite of Wells PalkBay and Pesalai (absent in Delft well)

[Figure: Generalized geologic map of Sri Lanka (from Edirisooriya et al., 2016, Geol. Mag. 155:907-920)]


Lithology and Thickness

Limestone. Ca. 240 m of white limestone and minor calcareous claystones.


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

Unconformable in Palk Bay well on PalkStrait LateCretaceous Fm pelagic marl.

Upper contact

Conformable in Palk Bay well with PalkStrait Oligocene Fm limestone.

Regional extent

Found only in PalkBay well of Palk Strait (between Sri Lanka and southern tip of India). Pesalai Well is indicated as having 234 m of Paleocene and 240 m of Eocene -- but no lithology or age information given. Delft well has a hiatus spanning entire Late Cretaceous through Eocene.


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

In Palk Bay well are planktonic foraminifers of Cribrohantkenina inflate, Pellatispisa, Marozovella, Morazovella formosa; plus calcareous nannofossils.


Age 

Eocene

Age Span: 
s

    Beginning stage: 
Ypresian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
56.00

    Ending stage: 
Bartonian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
37.71

Depositional setting

Inner shelf to outer shelf


Depositional pattern:  


Additional Information


Compiler:  

Ravi Misra