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HukaungEoceneUnit Formation
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HukaungEoceneUnit Fm base reconstruction

HukaungEoceneUnit Fm

Period: 
Paleogene

Age Interval: 
Late Eocene


Province: 
Myanmar Central Basins

Type Locality and Naming

Hukaung Basin (east flank), [Original Publication: Barber, A. J., Khin Zaw & Crow, M. J. (eds) 2017. Myanmar: Geology, Resources and Tectonics. Geological Society, London, Memoirs, 48, 169-183]

[Figure: Map showing location of sub-basins of the Central Myanmar Basin (after Myint Thein and M. Maung 2017)]


Lithology and Thickness

Sandy claystone. Consists of dark indurated mud rocks, fine sandstones and some thin limestone beds.


Lithology Pattern: 
Sandy claystone


Relationships and Distribution

Lower contact

It is the lowest unit of the basin

Upper contact

Conformable with LowerHukaungUnit Fm

Regional extent

This Fm is developed in Hukaung Basin (east flank). Also passes laterally into the Ahauk Fm in the forearc portion of the same basin (west flank).

[Figure: a) Composite stratigraphic correlation of Myanmar Central Basins (after Than et al., 2017)]


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[97.36,26.84],[95.62,26.11],[94.83,24.64],[94.19,22.39],[94.3,20.38],[95.11,17.51],[96.41,17.81],[95.95,20.52],[95.51,22.18],[96.28,24.52],[96.96,24.26],[97.82,25.42],[97.36,26.84]]]]}}

Fossils

Assilina sp. and Discocyclina sp. (Chit Saing 1974, 1991).


Age 

Late Eocene (Chit Saing 1974, 1991)

Age Span: 

    Beginning stage: 
Priabonian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
37.71

    Ending stage: 
Priabonian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
33.90

Depositional setting

Open marine-marginal marine environments.


Depositional pattern:  


Additional Information


Compiler:  

Myint Thein and Maung Maung (Myint Thein and Maung Maung the Eastern (Back-arc) Basin of Central Myanmar: Basement rocks, lithostratigraphic units, palaeocurrents, provenance and developmental history, Chapter 8 in Barber, A. J., Khin Zaw & Crow, M. J. (eds) 2017. Myanmar: Geology, Resources and Tectonics. Geological Society, London, Memoirs, 48, 169-183)