Nurin Fm

Period:

Paleogene, Neogene

Age Interval:

latest Oligocene-earliest Miocene

Province: Zaisan (Zaysan) Basin - East

Type Locality and Naming:

Synonym: E3-N1nr

Province:
Zaisan (Zaysan) Basin - East

Type Locality and Naming

Synonym: E3-N1nr

Province: Zaisan (Zaysan) Basin - East

Lithology and Thickness

37.0 m of Light greenish-gray, light yellow, and yellowish-brown siltstones, locally ferruginous with iron crusts, with interlayers of light gray and brown clays with iron crusts and plant stem imprints, and rare interlayers of sands. At the base - light yellow and brown sands, polymictic with sandy-gravel material and iron crusts.

Lithology Pattern:

Siltstone

Relationships and Distribution

Lower contact

Conformable onto the Oshagan Fm

Upper contact

Unconformably overlain by the Jamangarin Fm

Regional extent

GeoJSON

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Fossils

Age

latest Oligocene (late Chattian) – earliest Miocene (early Aquitanian); bound by minor hiatuses of uncertain extent (not included in age span here)

Age Span:

Beginning stage:

Chattian

Fraction up in beginning stage:

0.4

Beginning date (Ma):

25.59

Ending stage:

Aquitanian

Fraction up in the ending stage:

0.25

Ending date (Ma):

22.39

Depositional setting

Depositional pattern:

Additional Information

Compiler:

Information provided by Nariman Jamikeshev from Kazakh-language sources and from other publications.