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开源煤矿位于青海省柴达木盆地北缘的海西州大柴旦镇东60km、绿草山煤矿北10km。20世纪60-90年代末期是军事禁区,地质工作没有开展。自1997年移交地方政府后,煤矿承包给私人企业,为了更好地开发煤炭资源,该企业于2001年委托青海煤炭地质勘查院在煤矿0.4km2的范围内做了地表地质工作。由于煤矿的范围较小且出露的含煤地层仅为中侏罗统大煤沟组地层,未对煤矿外围整个含煤岩系进行系统的划分。2005年中央财政出资由青海煤炭地质勘查院承担“青海省海西州开源煤矿外围地质普查”项目,通过一年的地质工作对煤矿外围出露的侏罗纪地层进行了详细划分。
The open-source coal mine is located 60 km east of Dachaidan town, Haixi Prefecture, northern margin of the Qaidam Basin in Qinghai Province, and 10 km north of the Lvcaosha Coal Mine. The 1960s and 1990s, the military restricted area, the geological work has not been carried out. Since the transfer to local governments in 1997, the coal mines have been contracted to private enterprises. In order to better develop coal resources, the company commissioned the Qinghai Coal Geological Prospecting Institute to conduct surface geological work within a 0.4km2 coal mine in 2001. Due to the small range of coal mines and exposed coal-bearing strata, only the Middle Jurassic Dacanggou Formation is stratigraphic, and the whole coal-bearing rock series outside the coal mines are not systematically divided. In 2005, the central government financed the Qinghai Coal Geological Prospecting Institute to undertake the project of “Periphery Geological Survey of Open-source Coal Mine in Haixi Prefecture of Qinghai Province”, and detailedly separated the Jurassic strata exposed in the periphery of the coal mine through geological work of one year.