Songlinping Fm
Period:
Mesoproterozoic
Age Interval:
Xishanian (Ectasian) Xs (34)
Province:
Sichuan
Type Locality and Naming
Mid-South Sichuan. The Songlinping Fm was named by Southwest Geological Institute in 1965. The type section is in Songlinping, Mi-anshan Township, Xide County, Sichuan Province. The Songlinping Fm is the lowest formation-level stratigraphic unit in Dengxiangying Gr.
Synonym: （松林坪组）
Lithology and Thickness
It is composed of grey laminated sericite phyllite, sandwiched with metamorphosed sandstone, conglomerate and marble. Magnetite ore bodies occur in the lower part of the formation in some localities. Its thickness varies from 829 m to over 2197 m.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Bottom is not seen.
Upper contact
The top is conformably overlain by the Shengou Fm.
Regional extent
Mid-South Sichuan. It is distributed around Xide, Sichuan Province.
GeoJSON
null
Fossils
Age
The schematic stratigraphic column places Dengxiangying Gr as spanning Xishanian-Yuxian (Ectasian-Stenian), and each of its 5 formations are given equal spans for graphics.
Age Span:
Beginning stage:
Ectasian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
1,400.00
Ending stage:
Ectasian
Fraction up in the ending stage:
0.4
Ending date (Ma):
1,320.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracts from The Mesoproterozoic Erathem (chapter in Stratigraphic Lexicon of China, draft of 2022) by Gao Linzhi, Ding Xiaozhong, Zhang Chuanheng, Zhang Heng.