Emurhe Gr

Heilongjiang

Jingeng Sha (coordinator) Team under the Geological Bureau of Heilongjiang Province in 1975, and was first cited publicly by the Compiler

Jingeng Sha (coordinator) Group for Regional Stratigraphic Chart of Heilongjiang Province in 1979. The naming section is located at Bashiliwan on the right bank of Heilong River, Huma County, Heilongjiang Province. Upward succession of Qilinji Fm, Ershi'erzhan Fm, Mohe Fm and Kaikukang Fm

Synonym: （额木尔河群）

Lithology and Thickness:

This group is composed mainly of conglomerate, sandy conglomerate, sandstone, siltstone, shale and carbonaceous shale, intercalated with coal beds, locally with volcanic clastics. It is about 8700 m to 9000 m in thickness. [See individual formations for details.]

Lithology-pattern: Coarse-grained sandstone

Relationships and Distribution:

Lower contact:

It is in an unconformable contact with the underlying pre-Paleozoic or Paleozoic strata and Variscan granite.

Upper contact:

Its top part is unconformably overlain by the volcanics of the Xinganling Gr (Tamulangou Fm)

Regional extent:

The group is distributed mainly in the area of the upper Heilongjiang depression north of the Yilehuli Mts, with its exposures being found in the areas of the Greater Srovka River, the lower reaches of the Emur River, Lesser Xirgenxi River and Oupu area, stretching in an east-west direction.

GeoJSON:

Fossils:

It yields animal and plant fossils. [See individual formations for details.]

Age:

The age of the group remains to be checked by the fossils and/or radiometric isotopic dating. Schematic stratigraphic column shows a span of Aalenian through Callovian

Age span:

Beginning stage: Aalenian

Fraction up in beginning stage: 0.0

Beginning date (Ma):

Ending stage: Callovian

Fraction up in ending stage: 1.0

Ending date (Ma):

Depositional setting:

[See individual formations for details.]

Depositional-pattern:

Additional Information

Compiler

Jingeng Sha (coordinator)