Neogene

Paleogene

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

Neoproterozoic

Mesoproterozoic

Paleoproterozoic

Main source = Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian) Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

Khauzerman Formation

Khauzerman Fm

Period:

Devonian

Age Interval:

Famennian, Z1b

Province:
Zarafshan-N.Gissar

Type Locality and Naming

Along Mount Khauzieram, left bank of the Khanaka River, western part of the Zarafshan–Gissar mountain region, in the basin of the Kashkadarya River. Muftiev et al., 1978 (314, p. 46).

Synonym: Khauzieramskaya Suite, Хаузерманская св., Hauserman Fm

Lithology and Thickness

A weakly rhythmic sequence of light-gray to gray limestones with brownish tones, alternating with layers of massive, foraminiferal, nodular, and crustose limestones, with rare interbeds of oolitic limestone. Thickness 120–200 m.

Lithology Pattern:

Reef limestone

Relationships and Distribution

Lower contact

Conformably overlies the massive limestones of the Khalikdot Fm

Upper contact

Upper contact with the terrigenous Marguzor Fm being tectonic throughout.

Regional extent

Restricted to the southern part of the Zeravshan–Gissar mountain region.

GeoJSON

null

Fossils

Contains foraminifers and conodonts – Palmatolepis gigas Mull. et Young., P. linguiformis Mull., P. rhomboidea Sann., P. triangularis Sann., P. crepida Sann., P. Marginifera Marginifera Helms., P. gracilis sigmoidalis Ziegl., Polygnathus semicostatus Br. et Mebl., P. obliquicostatus Ziegl.; foraminifers – Quasiendothyra communis communis Raus., Parathurammina paulis Byk., P. dagmarae Sul., P. minima Antr., P. Spinosa Lip., Uralinella angusta Sab., Eotuberitina reitlingerae M.-Macl., E. talassica Pojark., and others.

Age

In Mount Khauzieram, the formation covers the conodont zones from P. triangularis to P. marginifera, corresponding to the Famennian Stage of the Upper Devonian.

Age Span:

Beginning stage:

Famennian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

371.10

Ending stage:

Famennian

Fraction up in the ending stage:

1.0

Ending date (Ma):

359.30

Depositional setting

Depositional pattern:

Additional Information

Compiler:

A.I. Kim – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”