Stratigraphy of the Lower Devonian sediments in the northwestern Shan Plateau, Myanmar


Author : Aye Ko Aung & Kyaw MinPublication : Bulletin of the Geological Society of MalaysiaVolume : 57Page : 55 - 67Year : 2011DOI : 10.7186/bgsm57201108


Description

Bulletin of the Geological Society of Malaysia, Volume 57, December 2011, pp. 55-67

 

Stratigraphy of the Lower Devonian sediments in the northwestern Shan Plateau, Myanmar

Aye Ko Aung1 & Kyaw Min2

1Department of Geology, University of Malaya, 50603 Kuala Lumpur, Malaysia
Email address: akaung.mm@gmail.com
2Department of Geology, Dagon University, Yangon, Myanmar  

 

Abstract: A new lithostratigraphic subdivision for the Lower Devonian sediments of the Pyin Oo Lwin Township, in northwestern Shan Plateau is proposed as the Zebingyi Formation (Pragian-Emsian) which comprises three members, stratigraphically from lower to upper, Khinzo Chaung Limestone, In-ni Chaung Limestone and Doganaing Chaung Orthoquartzite. The type section is designated at the Zebingyi area and the Anisakan-Phaungdaw area, Pyin Oo Lwin Township is considered as a complementary section. The stratigraphy and lithofacies of the formation is studied in detail. Very rich micro- and macrofauna indicate a Lower Devonian (Pragian-Emsian) age and stratigraphically it is closely correlated with those of the same age from the neighbouring regions such as Malaysia, Thailand and China. The Zebingyi Formation as a whole is interpreted as pelagic to shallowing up locally with intertidal channel environment.

Keywords: Lower Devonian stratigraphy, Shan Plateau, Myanmar

 https://doi.org/10.7186/bgsm57201108