Taunggyun Sandstone Fm
Type Locality and Naming
Shan Mid Plateau, (Pyin Oo Lwin), the type section is designated in Taunggyun Chaung, south and SE of the Ngwetaung range, about 24 km west of Anisakan, Pyin Oo Lwin township where the unit is 1170 m thick. The Taunggyun Sandstone Fm crops out along the crest and eastern slope of the Ngwetaung Range, west of Panzon Chaung, Leikkya–Thandaung area, Pyin Oo Lwin township, and the upper reaches of Nankashwe and Nankatha Chaungs, NE of Sedawgyi, Naungkio township, Shan State North. [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
Sandstone. It is thickbedded to massive, purplish, reddish-brown to buff-coloured ferruginous, micaceous sandstone with ripple marks and minor siltstone, shale and occasional phyllite.
Relationships and Distribution
Lower contact
Conformably overlies the Sibaing Orthoquartzite Fm
Upper contact
Conformably undeerlies with Lokepyin Fm
Regional extent
This Fm is developed in Shan mid-Plateau. The Taunggyun Sandstone is correlated with the Myet Ye Fm of Shan State South, and appears to be at least a partial equivalent of the Jemurok Member (youngest) of the latest Cambrian Machinchang Fm of Malaysia (Lee 2009). On faunal and lithological similarities, it can be correlated with the Tarutau Gr of Late Cambrian–Early Ordovician age in southern Thailand (Wongwanich et al. 2002; Ridd 2011).
GeoJSON
Fossils
Thaw Tint (1974) identified the trilobites Saukiella sp., Pagodia sp., Thailandium sp. And Wilbernia sp. And the brachiopods Nanorthis sp. and Billingsella sp. in association with a small number of Echinosphaerites sp. in the Taunggyun Sandstone Fm.
Age
Depositional setting
The overall sequence of the Taunggyun Sandstone Fm indicates deposition in a storm-influenced, nearshore or beach environment.
Additional Information