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

Malyanddaryin Formation

Malyanddaryin Fm

Period:

Paleogene

Age Interval:

Lutetian-Priabonian, B1a

Province:
Bukhara-SW Gissar

Type Locality and Naming

Along the Malyand River, South-West Gissar. A.A. Abdusamatov, 1989 (Decision of the Commission on the Paleogene System of SredazRMSK, 1989). Stratotype in the area of the confluence of the Guurd and Malyand rivers.

Synonym: Malyanddaryinskaya Suite, Маляндарьинская св., Malyandarya Fm, Malandyrdar Fm

Lithology and Thickness

Greenish-gray silty (aleuritic) clays, dark gray and black claystone (argillites(. Thickness up to 380 m.

Lithology Pattern:

Claystone

Relationships and Distribution

Lower contact

Lies conformably on the Alay Fm

Upper contact

Conformably overlain by the Guliob Fm.

Regional extent

Southwest Gissar (basin of the Tupolang River). To the east, the suite facially transitions into the Gulizindan Fm, Rishstan Fm, and Guliob suites.

GeoJSON

null

Fossils

Contains marine bivalve mollusks - Pseurodon baskarensis Korob, et Makar., Liostrea kokanensis Sok., Fatina esterhazyi böhmy Vial., F. esterhazyi bunsei Greew., Nucula aralensis Luk., N. turgaica Miron., Ostrea plicata Sol., O. prona longa Alex., Cardita lukovichi Ruch., Aralocardia eichwaldiana Rom.; foraminifers Discorbis ferganensis N. Byk., Anomalina ammophila crassa Balakhm., Acarinina rotundimarginata Subb., Haplophragmoides orfaensis Rod., Eponides jacksonensis (Cushm.), Pseudohastigerina micra (Cole), Rotalia alaica N. Byk., Bolivinopsis turgaicus Balakhm., Trochammina masini Sub., Bolivina asiatica Moroz., Popovia rugosa Sul., P. hirta Sul., Gyroidinoides ucrainicus (Maslak.), Cibicides khanabadensis Mjasn., Planulina costata (Hantk.), Globigerapsis tropicalis Blow. et Bakn, Uvigerina costellata Moroz.

Age

It belongs to the middle-late Eocene (Lutetian, Bartonian, and lower Priabonian stages).

Age Span:

Beginning stage:

Lutetian

Fraction up in beginning stage:

0.6

Beginning date (Ma):

43.85

Ending stage:

Bartonian

Fraction up in the ending stage:

0.5

Ending date (Ma):

39.37

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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