Upper TienShan Gr

Period:

Quaternary, Neogene

Age Interval:

Upper Pliocene-Eopleistocene, CK11

Province:
Chatkal-Kuramin Region

Type Locality and Naming

Part of the Tien Shan complex. B.I. Pinhasov, 1985 (145, pp.15-17). Adopted in the Chatkal-Kuramin series of sheets m-1:50000, 1998.

Synonym: Upper Tianshan Series, Верхнетяньшаньская сер.

Lithology and Thickness

Brownish molasse formation, corresponding to the stage of intense and sharply differentiated tectonic development of the orogen, humidification and cooling of the climate, and the emergence of a constantly active hydrographic network. Clays, siltstone (aleurolites), sandstones, gravelites, conglomerates. Thickness 2000-3000m.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

Unconformably overlies the Middle TienShan Gr or discordantly on older mountains and Paleozoic.

Upper contact

Discordantly overlain by ancient Quaternary deposits of the Sokh Gr and Nanay Gr complexes.

Regional extent

Intermontane depressions of the Tien-Shan, foothill zone.

GeoJSON

null

Fossils

Contains fauna of the Ili and Khorgos complexes.

Age

Series correspond to all Upper Pliocene-Early Pleistocene suites in this dictionary.

Age Span:

Beginning stage:

Piacenzian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

3.60

Ending stage:

Calabrian

Fraction up in the ending stage:

1.0

Ending date (Ma):

0.77

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)”