Tataertag Fm
Type Locality and Naming
It was named by the 13th Party, Ministry of Geology in 1956 and published by the Compiling Group of the Stratigraphical Scale of the Xinjiang Uygur Zizhiqu in 1981. The type section is located at Dawuangou, 20 km northwest of Yin'gancun Village, Kalpin County, Xinjiang.
Synonym: (塔塔尔塔格组)
Lithology and Thickness
The formation is mainly composed of purplish red-banded pelitic siltstone, which might also be interbedded with grayish green pelitic siltstone; the base of the formation consists of interbeds of purplish red sandstone with grayish green silty shale.
Relationships and Distribution
Lower contact
It rests conformably in between the underlying Kalpintag Fm
Upper contact
It rests conformably in between the overlying Yimugantawu Fm
Regional extent
It is comparatively steady in lithology and is exposed in Akqi and in the area from Kalpin to Bachu. The thickness of the formation varies from 156-279 m in general. On the eastern bank of Xiaohaizi Reservoir in Bachu it bears minor tuff and is 99 m in thickness. In the area of Akqi the formation, 170-280 m in thickness, partly yields cuprous sandstone lenses.
GeoJSON
Fossils
The upper part of the formation bears gastropod Horotogtum sp., chitinozoa Cingulochitina wronai, etc.
Age
Depositional setting
The formation represents a suit of mainly red, partly grayish green, clastic rock, belonging to littoral facies of platform type.
Additional Information