Atkamar Fm
Period:
Silurian
Age Interval:
, Z4
Province:
Zarafshan-N.Gissar
Type Locality and Naming
Along the Atkamar stream, southwestern part of the Kara-Tyube Mountains. V.S. Korsakov in 1958 (1960).
Synonym: Atkamar Suite, Аткамарская св.
Lithology and Thickness
Predominantly quartzitic, phyllitic, carbonaceous-clayey, and silty (aleurolite)-clayey slates, with layers of limestones, sandstones, quartzites, siliceous, and jasperoid slates. Thickness 470m. Tungsten occurrence is associated with skarn rocks
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Lower boundary is tectonic. Schematic stratigraphic column indicates the lower contact as Lolabulak Fm
Upper contact
Conformable overlain by the Burchakyrtau Fm of Wenlock
Regional extent
Kara-Tyube Mountains.
GeoJSON
null
Fossils
Age
Age Span:
Beginning stage:
Rhuddanian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
443.07
Ending stage:
Telychian
Fraction up in the ending stage:
1.0
Ending date (Ma):
432.93
Depositional setting
Depositional pattern:
Additional Information
Compiler:
V.S. Korsakov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”