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

Kyzylchin Formation

Kyzylchin Fm

Period:

Neogene

Age Interval:

Lower Miocene, B1, B1a

Province:
Bukhara-SW Gissar

Type Locality and Naming

Along the village of Kyzylcha, Southwest Gissar. S.Kh. Mirkamalova, G.A. Belenky, 1954 (301, pp.52-53).

Synonym: Kyzylchinskaya Suite, Кызылчинская св.

Lithology and Thickness

Red-colored clays, siltstone (aleurolites), sandstones with subordinate bluish-gray marls and limestones. Thickness up to 150 m.

Lithology Pattern:

Sandy_claystone

Relationships and Distribution

Lower contact

With erosion lies on the green clays of the Eocene

Upper contact

With erosion it is overlain by the Miocene Sulusay Fm (Shurasan district) or Uchkolsay Fm.

Regional extent

Southwest Gissar, Dehkanabad syncline, Shurasan district. Correlated with the Shurysay Fm of the Surkhandarya depression and the upper lower Miocene part of the section of the Sarbatyr Fm and Sumstar Fm.

GeoJSON

null

Fossils

Contains mollusks - Cardium helmerseni Iljina, Cardiopsis baisnica Ivan., Carbula helmerseni Mikh., Isocardia subtransversa kumsuatense Iljina, Pygacardia et rustica Sow., foraminifers - Nonion ex gr. granosus (d. Orb.), Ammobaculites aff. lobsanensis (Andr.); ostracods - Cytheridea miilleri (Miins.), C. kammilae Ros., C. erenata Gramm in litt., Loxoconcha usboensis Ros., Candona luminosa Bodina, Mediocypris sp.

Age

A.A. conditionally refers the suite to the Oligocene-Miocene. G.Yu. Alferov et al. (61) date the formation to the lower Miocene.

Age Span:

Beginning stage:

Chattian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

27.29

Ending stage:

Aquitanian

Fraction up in the ending stage:

1.0

Ending date (Ma):

20.45

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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