Guiyunhua Fm
Period:
Jurassic
Age Interval:
Late Jurassic, (TJ63)
Province:
Liaoning
Type Locality and Naming
It was named by Liaoning Regional Geological Survey Team, 1973, Explanatory Text for 1∶200 000 Scale Geological Map: Zhuanghe Sheet. Type section is at Guiyunhua Township, Zhuanghe County, Liaoning Province.
Synonym:
Lithology and Thickness
For grayish purple, yellowish green volcanic breccia, with interbeds of yellowish green, grayish purple tuffaceous siltstone and shales.
Lithology Pattern:
Volcanic ash
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next younger unit is the Pulandian Fm (Holocene peat beds; not in Lexicon)
Upper contact
Regionally, the schematic strat column indicates the next older unit is the mid-Jurassic Zhayao Fm.
Regional extent
GeoJSON
null
Fossils
Age
Age Span:
Beginning stage:
Tithonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
149.24
Ending stage:
Tithonian
Fraction up in the ending stage:
0.5
Ending date (Ma):
146.17
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Jingeng Sha (coordinator)
Extracted from Geological Formation Names of China (1866-2000), Springer