Ramaif Fm
Period:
Proterozoic
Age Interval:
Neoproterozoic (PR1? rm), R1
Province:
SE Tajik (SE Pamir)
Type Locality and Naming
The Ramaif Fm ends the section of the Alichur Gr. This is the lowermost/fourth formation in Alichur Gr.
Synonym: Ramaifskaya Suite, Рамаифская свита
Reference section:
Lithology and Thickness
Predominantly consists of cataclased biotite schists. The incomplete thickness is 1500 m. Among them, there are layers of colorful biotite, mica, chlorite, and chlorite-sericite shales. The shales contain thin (up to 2 m) layers and lenses of marble.
Lithology Pattern:
Gneiss
Relationships and Distribution
Lower contact
This is the oldest formation in Rushan range.
Upper contact
Schematic stratigraphic column indicates the upper contact as Marganay Fm
Regional extent
It is developed in the Southwestern Pamir- Rushan, Alichur, and Wakhan ranges.
GeoJSON
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Fossils
Age
Neoproterozoic
Age Span:
Beginning stage:
Tonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
1,000.00
Ending stage:
Tonian
Fraction up in the ending stage:
0.4
Ending date (Ma):
888.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Lakhsh district, 276.