Shingak Fm
Period:
Devonian
Age Interval:
Lower Devonian, Z3
Province:
Zarafshan-N.Gissar
Type Locality and Naming
Along the Shing River, Central Tajikistan. A.S. Shadchinen in 1970 (500) in the volume of upper Silurian-lower Devonian. D.A. Starshinin (1994) used this name for lower Devonian terrigenous-carbonate deposits in the Chumkartau Mountains (460, p.99).
Synonym:
Lithology and Thickness
Dolomites, dolomitic limestones with layers of quartz sandstones, gravels, conglomerates, siltstone (aleurolites). Thickness about 900 m.
Lithology Pattern:
Dolomite
Relationships and Distribution
Lower contact
It conformably overlies the terrigenous rock suite
Upper contact
It is conformably overlain by the Middle Devonian Oybadam-Dev Fm limestone.
Regional extent
Chumkartau Mountains, Zarafshan River valley.
GeoJSON
null
Fossils
Finds of corals, brachiopods, crinoids
Age
Early Devonian age of the suite is determined by the finds of corals, brachiopods, crinoids of the Pragian and Emsian epochs (Starshinin et al., 1994).
Age Span:
Beginning stage:
Pragian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
412.40
Ending stage:
Emsian
Fraction up in the ending stage:
1.0
Ending date (Ma):
394.30
Depositional setting
Depositional pattern:
Additional Information
Compiler:
V.V. Mikhailov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”