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

Khalikidot Formation

Khalikidot Fm

Period:

Devonian

Age Interval:

Eifelian-Frasnian, Z1b

Province:
Zarafshan-N.Gissar

Type Locality and Naming

Named after the town of Halikdot, left bank of the upper reaches of the Hanakasu River, a left tributary of the Kashkadarya River, Zarafshan-Gissar mountain region. 3.3. Mufitiev et al., 1978 (314, p.45). Stratotype on the northeastern slope of Mount Yeramko (Gissar Range).

Synonym: Khalikdotskaya Suite, Халикидотская св., Halikdot Fm

Lithology and Thickness

Gray to dark gray massive, coarse- and thick-bedded microgranular, clotted, clotted-detrital, and organodetrital limestones. The Khalikidot Fm suite represents a formation of the so-called "reefogenic-accumulative thicknesses," including elements of reef constructions, biostromes, and taphostromes. Thickness: 120-700m.

Lithology Pattern:

Limestone

Relationships and Distribution

Lower contact

Underlain by the Magian Fm (Tajikistan)

Upper contact

Overlain by layered limestones of the Khauserman Fm, stratigraphic contacts are conformable.

Regional extent

Southern and central parts of the Zarafshan-Gissar mountain region.

GeoJSON

null

Fossils

Contains stromatoporoids - Amphipora ramosa Phil., A. ramosa minor Yavor., corals Crassialveolites cavernosus Lec., C. crassus Lec., Alveolitella fecunda Salee, Thamnopora proba Tchern., Dendrostella trigemme (Quenst.); brachiopods Theodossia superba (Khod.), Beckmania cf. inflexa (Sow.), Uralospirifer ex gr. mansy (Khod.), Stringocephalus burtini Deff.; conodonts - Ancyrodella cf. nodosa Ulrich. et Bassl., Palmatolepis cf. hassi Mul. et Mul. and others, characterizing the Eifelian, Givetian, and Frasnian stages of the Middle and Upper Devonian.

Age

A.A. considered the age of the suite only within the Givetian and Frasnian epochs.

Age Span:

Beginning stage:

Givetian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

385.30

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)”