Sediment facies, provenance evolution and their implications of the Lower Devonian to Lower Carboniferous in Shaerbuerti mountain in North Xinjiang
北疆沙尔布尔提山地区早泥盆-早石炭世沉积相、物源演变及其意义

The strata from the Lower Devonian to the Lower Carboniferous in Shaerbuerti mountain in Northwest Junggar are mainly offshore and coastal plain facies. The Lower Devonian Hebukesai Formation consists of the Wutubulake, Mangeer and Mangkelu sub-formations that belong to terrigenous detritus offshore facies, terrigenous detritus offshore and carbonic offshore facies, and carbonic offshore facies, respectively. The Middle Devonian Hujiersite Formation is attributed to coastal plain facies. The Upper Devonian Hongguleleng Formation is divided into coastal plain facies, carbonic offshore facies and terrigenous detritus offshore facies from lower to upper. The Lower Carboniferous Heishantou Formation is recognized as terrigenous detritus offshore facies. The paleocurrent data from the Lower Devonian and Lower Carboniferous show the dominant direction from north to south, which may imply that the provenance (the Chengjisi-Taerbahatai fold belt) is on the north. Together with the facies research, the study area is potentially characterized by a Late Paleozoic continental margin. Provenance evolution analysis shows that an arc belt in the Chengjisi-Taerbahatai fold belt uplifted and provided the Wutubulake sub-formation with low maturity detritus during the Early Devonian, which followed by the detritus from the lithic recycled orogen provenance that composed the Hujiersite and Hongguleleng formations during the Middle and Late Devonian. In Early Carboniferous, the provenance changed into a transitional recycled orogen. The change in detritus suggests the composition character and uplift history of the Chengjisi-Taerbahatai fold belt.