Khodzhakul-Cret Formation

Khodzhakul-Cret Fm

Period:

Cretaceous

Age Interval:

Cenomanian, U5

Province:
Ustyurt-Sultanuzdag

Type Locality and Naming

Named after the Khojakul village and lake, southern Pre-Aral region. S.S. Shultz (Jr.), 1967 (509, p.14). Stratotype at Hojakulsay (Khodzhakulsay), on the northwest slopes of Sultanuizdag Mountains.

Synonym: Khojakul Suite, Ходжакульская св.

Lithology and Thickness

Alluvial-deluvial cross-bedded sands, sandstones with interlayers of ferruginous conglomerates, gravelites, and clays, remains of turtle shells, scutes, and teeth; fragments of dinosaur bones; wood and bark of trees; shark teeth; vertebrae and scales of bony fish. The average thickness is 12-118 m.

Lithology Pattern:

Coarse-grained sandstone

Relationships and Distribution

Lower contact

It lies with erosion on the Kyzylkum Fm (Kyzylkalin Fm)

Upper contact

According to some, sometimes with erosion, it is overlain by the Beshtobin Fm

Regional extent

Sultanuizdag Range, Kokcha ranges, and adjacent regions of northwestern Kyzylkum.

GeoJSON

null

Fossils

Contains marine bivalve mollusks - Inoceramus crippsi Mant., Rhynchosreon chaperi (Bayle), Rh. orbicularum (Vinok.); shark teeth - Odontaspis macrorhiza Copr., Od. ex gr. sulcidens Copr., Scapanorhynchus ex gr. gracilis Ag., Sc. subulatus (Ag.), Ptychodus decurrens Ag.

Age

It belongs to the Cenomanian.

Age Span:

Beginning stage:

Cenomanian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

100.50

Ending stage:

Cenomanian

Fraction up in the ending stage:

0.7

Ending date (Ma):

95.88

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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