Ct. Xiao et Yt. Pan, Carboniferous mixed terrigenous clastic, carbonate and sulphate sediments in the Bachu area, Xinjiang, ACT GEO S-E, 73(3), 1999, pp. 341-347
The Carboniferous system in the Xiaohaizi area, Bachu County, Xinjiang Uygu
r Autonomous Region, composed of typical mixed terrigenous elastic, carbona
te and sulphate sediments, was mainly deposited in the tidal flat and lagoo
n environments. The mixed sediments occur as the following eleven types: 1.
limestone intercalated with siltstone; 2. interbeds of shale and limestone
; 3. gypsolyte interbedded with limestone; 4. gypsolyte intercalated with s
iltstone; 5. gypsolyte interbedded with shale; 6. gypsolyte intercalated wi
th siltstone, limestone and dolomite; 7. siltstone interbedded with gypsoly
te and limestone; 8. terrigenous detritus scattered in carbonate matrix; 9.
carbonate as cement in elastic rocks; 10. mixed sediments of carbonate and
terrigenous mud; 11. mixed sediments of carbonate grains with terrigenous
sand. Based on the analysis of the dynamic mechanism of mixed sediments, it
is believed that these types of mixed sediments in the study area were con
trolled by climate, sea level change and sources of sediments.