Gadikao Fm

Period:

Permian

Age Interval:

(58), Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)

Province:
Qinghai

Type Locality and Naming

The type section is located in the Gamaodeng area to the south of Ziqu and to the north of Mohai, Zaduo County, Qinghai Province.It was named by the 2^nd Regional Geological Survey Party of Qinghai Province.

Lithology and Thickness

Volcaniclastics and clastics. Composed of yellow-brown dacitic agglomerate, volcanic breccia lava, dacite, grey slate, quartz-sandstone and bio-limestone. Thickness is over 448 m.

Lithology Pattern:

Volcanics

Relationships and Distribution

Lower contact

Uncertain contact with the underlying strata of upper Devonian

Upper contact

Conformable contact with the overlying Zhageyong Fm

Regional extent

Distributed in the Qunan, Zhaqu and Sanzhi-Akao areas of Zaduo County.

GeoJSON

null

Fossils

Fusulinida represented by Misellina claudiae and Parafusulina, whose features are similar to those of the faunas of the Qixia Fm,

Age

Qixia’an Subepoch = Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)

Age Span:

Beginning stage:

Kungurian

Fraction up in beginning stage:

0.15

Beginning date (Ma):

281.96

Ending stage:

Kungurian

Fraction up in the ending stage:

1.0

Ending date (Ma):

274.37

Depositional setting

Depositional pattern:

Additional Information

Compiler:

Wang Yujing