Gayang Fm
Type Locality and Naming
It was named by Lin Baoyu and Qiu Hongrong in 1983. The type section is located at the southwest slope, approximately 1 km southeast of Kede Village, Pazhuo District, Dingri County, Xizang Zizhiqu.
Synonym: (嘎样组) ; Xia Daixiang et al. (1997) correlated this formation with the lower part of Pulu Fm and considered this formation name as an invalid name. We retain this formation herein tentatively for further investigation.
Lithology and Thickness
The formation, 20 m in thickness, is dominated by grey thick-bedded-to-massive siliceous banded limestone with 5 m thick black grey thin-bedded limestone.
Relationships and Distribution
Lower contact
The conformable contact onto the underlying Kede Fm
Upper contact
The conformable contact with the overlying Pazhug Fm is observable.
Regional extent
It is exposed at Pazhuo area in Dingri County.
GeoJSON
Fossils
It yields rich cephalopod, conodont, etc.: conodonts Ozarkodina remsheidensis eosteinhornensis, O. excavata excavata; cephalopod Kopaninoceras jucundum, etc.
Age
Depositional setting
Additional Information