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

Dzhilandin Formation

Dzhilandin Fm

Period:

Devonian

Age Interval:

Lower Devonian?, Z5a

Province:
Zarafshan-N.Gissar

Type Locality and Naming

Along the Jilan River, Ziaetdin Mountains. V.V. Mikhailov, F.K. Divaev, 2000 (308, pp.96-98). First described and distinguished from the Katarmay suite under the name ankarimit-basaltic formation by V.V. Mikhailov in 1988 (308). Stratotype along the Jilan River.

Synonym: Dzhilandinskaya Suite, Джиландинская св.

Lithology and Thickness

Alternation of agglomerate, boulder, and lapilli crystalloclastic tuffs of basic composition, consisting of rounded or lens-shaped fragments of basalts, ankarimits, amphibolites, crystalline slates, pyroxene, and other rocks, cemented by a chlorite matrix. In some sections, amygdaloidal basalts appear in the section. Thickness 120-140m.

Lithology Pattern:

Volcanic_ash

Relationships and Distribution

Lower contact

Contacts with surrounding rocks are tectonic.

Upper contact

Contacts with surrounding rocks are tectonic.

Regional extent

Central part of the Katarmay Mountains, two narrow sublatitudinal strips extending from the mouth of the Navruzalisa River on the west to the eastern end of the mountains - more than 23 km.

GeoJSON

null

Fossils

Organic remains are absent.

Age

The Lower Devonian age is accepted conditionally.

Age Span:

Beginning stage:

Pragian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

412.40

Ending stage:

Pragian

Fraction up in the ending stage:

1.0

Ending date (Ma):

410.51

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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