Mangxiangyu Fm
Period:
Triassic
Age Interval:
Early Late Triassic (TJ43)
Province:
Xizang (Tibet)
Type Locality and Naming
The type section is located in Zhada country, Tibet and named by Liang (1991).
Lithology and Thickness
It is mainly composed of gray-dark gray micrite and bioclastic limestone. Thickness is 140 m.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
On schematic stratigraphic section, the next older unit is the Denggongka Fm.
Upper contact
On schematic stratigraphic section, the next younger unit is the Duorang Gr.
Regional extent
GeoJSON
null
Fossils
Bivalve class rich integration layer, called Halobia comata assembly. The only genus of ammonoids is Parachyceras.
Age
Schematic stratigraphic section indicates it spans the Ladinian. [Coeval with Zharinaya Fm in same region; therefore for TSC-graphic, put as late Ladinian]
Age Span:
Beginning stage:
Ladinian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
241.46
Ending stage:
Ladinian
Fraction up in the ending stage:
1.0
Ending date (Ma):
237.00
Depositional setting
Shallow marine facies
Depositional pattern:
Additional Information
Compiler:
Zhang Shunxin, Sun Xin and Tong Jinnan.