JianshanBasalt Fm
Period:
Neogene
Age Interval:
Neogene, (23a)
Province:
Jiangsu
Type Locality and Naming
Jianshan in Jiangsu Province. Named by Anhui Regional Geological Survey Team, 1977, Explanatory Text for 1∶200 000 Scale Geological Map: Nanjing Sheet.
[To avoid confusion with the same-English-spelling Jianshan Fm of Carboniferous age in Gansu, the "Basalt" is appended to this formation name in this Lexicon]
Lithology and Thickness
Not given; but assumed to be basalt from the name.
Lithology Pattern:
Lava
Relationships and Distribution
Lower contact
Disconformably overlies the Liuhe Fm in that type section.
Upper contact
Regional extent
GeoJSON
null
Fossils
Age
Age Span:
Beginning stage:
Messinian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
7.25
Ending stage:
Gelasian
Fraction up in the ending stage:
1.0
Ending date (Ma):
1.80
Depositional setting
Depositional pattern:
Additional Information
Compiler: