Wanxiu Gr

Qinghai

Jingeng Sha (coordinator) Group for Qinghai Regional Stratigraphic Scale, 1980, Regional Stratigraphic Scale of Northwest China: Qinghai Province, Beijing: Geological Publishing House. First appeared in a 1973 manuscript by No.1 Qinghai Regional Geological Survey Team ➁ ➃For

Synonym: Wanxiu Fm

Lithology and Thickness:

Dark purple, purplish red thick-bedded conglomerate with interbeds of sandstone, shale and marls.

Lithology-pattern: Aus conglomerate

Relationships and Distribution:

Lower contact:

Regionally, the schematic strat column indicates the next younger unit as the Damitan Fm of upper-middle Jurasic.

Upper contact:

Regional extent:

.

GeoJSON:

Fossils:

Age:

Schematic strat column in the previous "red Chinese Lexicon" had implied that the Wanxiu Gr spanned at least the upper-Upper Jurassic. But Geological Formation Names of China book (Springer) and an article (Pu et al., 2019, Earth Sci. Front., 26(5): 304-316) indicate Early Cretaceous.

Age span:

Beginning stage: Kimmeridgian

Fraction up in beginning stage: 0.0

Beginning date (Ma):

Ending stage: Berriasian

Fraction up in ending stage: 1.0

Ending date (Ma):

Depositional setting:

Molasse-like;

Depositional-pattern:

Additional Information

Compiler

Jingeng Sha (coordinator)

Extracted from Geological Formation Names of China (1866–2000), Springer.