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湘中坳陷是雪峰古陆东侧石油普查的重点地区之一。在大地构造上属南华准地台的一部分。加里东运动回返后,在几乎整个晚古生代,是一个相对稳定沉降的坳陷。中泥盆统棋梓桥组(D_2q)、上泥盆统佘田桥组(D_3s)及锡矿山组(D_3x)、下石炭统岩关阶(C_1y)及大塘阶(C_1d),以碳酸盐岩为主的海相沉积厚达3000—5000米。见油气苗及井下气显示多处,反映了地史发展过程中有过油气的生成及一定的成油地质条件。印支运动使上古生界及中下三迭统产生褶皱,印支、燕山构造运动和岩浆活动,对油气聚集、再分配及加剧油气演化,都有明显的影响。
The Xiangzhong depression is one of the key areas in the oil census to the east of Xuefeng ancient land. On the earth structure is a part of South China prospective platform. After the Caledonian movement returned, it was a relatively stable subsidence almost for the entire Late Paleozoic. Middle Devonian Qizziqiao Formation (D_2q), Upper Devonian Shetianqiao Formation (D_3s), and Tin Minshan Formation (D_3x), Lower Carboniferous rocks (C_1y) and Datang Order (C_1d) Silt-based marine deposits up to 3000-5000 meters thick. See oil and gas wells and underground gas show multiple, reflecting the history of the development of oil and gas have been generated and certain oil into the geological conditions. The Indosinian movement made the Upper Paleozoic and the Lower Triassic fold, and the Indosinian and Yanshanian tectonic movements and magmatic activities have a significant impact on the accumulation and redistribution of hydrocarbons and the intensification of oil and gas evolution.