由于合适的矿物质的缺乏,气体 / 油的炮兵阵地年龄以前从来精确地没被获得过。CH4-CO2-saline-bearing 第二等的包括从 Yingcheng 形成的暴烈的岩石在石英被发现,在 Songliao 盆的深 CO2 煤气的水库的容器岩石。包括液体在煤气的炮兵阵地和累积期间在石英被套住进 microcracks,提供为 40Ar-39Ar 的一个最佳的目标决定 CO2 煤气的炮兵阵地年龄的逐步的压碎技术。由逐步的压碎的一件石英样品的 40Ar-39Ar 标明日期结果与 78.4 灵椠?桴?畗慴?潍湵慴湩?牡慥?潎瑲?桃湩?牃瑡湯?敄慴汩摥朠潥潬楧慣?的年龄产出高度线性回归的 isochron ?癲祥湩?潣普物獭琠慨?桴獥?潶'褱熮鏍剴要濄城媚訙蕸蛼L敬眠瑩楨?桴?敮杩'P牯湩?敳楤敭瑮牡?潲正?吠敨匠剈??敲?瑬?湯戠獡污楴?湡敤楳整愠敲搠癩摩摥椠瑮?睴?牧畯獰?湉漠敮朠潲灵琠敨㈠?A土?A愠敧?牡?牦浯㈠?″潴㈠??慍?桷捩?獩挠湯楳瑳湥?楷桴琠敨戠獡浥湥?牣獵慴?条?湩?灵湩?湡?畗慴?牡慥???桴?瑯敨?牧畯?ㄠ″牧楡獮礠敩摬摥愠眠楥桧整?敭
Due to a lack of suitable minerals, the gas/oil emplacement ages have never been accurately obtained before. CHa-CO2-salinebearing secondary inclusions are found in quartz from the volcanic rocks of the Yingcheng Formation, the container rocks of the deep CO2 gas reservoir in the Songliao Basin. The inclusion fluid was trapped into microcracks in quartz during the gas emplacement and accumulation, providing an optimal target for the ^40Ar-^39Ar stepwise crushing technique to determine the CO2 gas emplacement age. ^40Ar-^39Ar dating results of a quartz sample by stepwise crushing yield a highly linear-regression isochron with an age of 78.4±1.3 Ma, indicating that the accumulation of the deep CO2 gas reservoir in the Songliao Basin occurred in the late Cretaceous. This is the first time to report an exact isotopic age for a CO2 gas reservoir, which indicates that the 4~mr-39Ar dating can serve as a new technique to date the oil/gas emplacement ages.