Thitsipin Limestone Fm
Type Locality and Naming
Shan South Plateau, [Original Publication: Barber, A. J., Khin Zaw & Crow, M. J. (eds) 2017. Myanmar: Geology, Resources and Tectonics. Geological Society, London, Memoirs, 48, 317-342]
Lithology and Thickness
Dolomitic limestone. composed essentially of a monotonous sequence of dolomitic limestones and dolomites, with less dolomitic interbeds of coralline limestone, bioclastic limestone and limestone breccia in the lower part, horizons of foraminiferal (miliolid) limestone and fusuline limestone in the middle and an occasional interval of burrowed limestone in the upper part. A persistent horizon of stromatolitic limestone forms the upper boundary of the unit.
Relationships and Distribution
Lower contact
Unconformable with Maymyo Fm
Upper contact
Conformable with Natteik Limestone Fm
Regional extent
This Fm is developed in Shan South Plateau. Coeval with Dolomitic Limestone Unit Fm in mid-Plateau.
GeoJSON
Fossils
In stratigraphic mapping, the limestone and dolomitic limestone of the shallow shelf facies, occurring immediately above the Lower Palaeozoic units and containing early Middle Permian corals (mostly waagenophyllids), brachiopods and foraminiferal fossils (particularly schwagerinid fusulines), can be assigned to the Thitsipin Fm.
Age
Depositional setting
On the basis of stratigraphic, palaeontological and sedimentological characteristics, the Fm can be interpreted as deposited on a carbonate shelf with scattered small patch reefs, under shallow, warm marine conditions, with normal to slightly high salinity.
Additional Information