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

Kolsuyuk Formation

Kolsuyuk Fm

Period:

Devonian

Age Interval:

Givetian-Frasnian, N3a

Province:
Nuratau

Type Locality and Naming

By the Kolsuyuk collective farm, Pistalitau Mountains, N. foothills of the N. Nuratau Range. P.N. Podkopaev et al., 1961f. (166, pp. 195-196). Stratotype in the area of the Kolsuyuk collective farm.

Synonym: Kol'suyukskaya Suite, Кольсуйская св., Kolsuy Fm

Lithology and Thickness

Variegated, organogenic gray to dark gray limestones with brachiopods - Emanuella subumbona Hall., stromatoporoid biogenic and biostromal limestones, slope limestone breccias, dark gray and black algal limestones, alternating with biomicroitic amphiporoid-stromatoporoid varieties. Thickness 1540m.

Lithology Pattern:

Reef limestone

Relationships and Distribution

Lower contact

Conformably overlies the Pistalitau Fm

Upper contact

Conformably overlain by the Semizsalpin Fm.

Regional extent

Northern foothills of the N. Nuratau Range, N. slope of the W. and central parts of Pistalitau.

GeoJSON

null

Fossils

In the composition of the fauna, representatives of benthic groups predominate - stromatoporoids - Amphipora ramosaPhil., Gerronostroma aff. nikitini Yavor.; tabulates - Alveolites suborbicularis Lam., Alveolitella cf. polenovi Peetz; brachiopods - Theodossia anossovi Vern., Cyrtospirifer murchisonianus Kon.; conodonts - Polygnathus ovatinodosusOvnat.

Age

Age - late Givetian, Frasnian period. (165).

Age Span:

Beginning stage:

Givetian

Fraction up in beginning stage:

0.8

Beginning date (Ma):

380.18

Ending stage:

Frasnian

Fraction up in the ending stage:

1.0

Ending date (Ma):

371.10

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)”