Source beds are turbidite of middle Triassic series.
矿源层为中三叠统浊积岩。
The Upper Triassic Series in the Zixing-Rucheng coalfield in southeastern Hunan is a set of grayish black sandy mudstone, fine sandstone, medium coarse sandstone and coal seams combination.
湘东南地区资汝煤田上三叠统为一套灰黑色砂质泥岩、细砂岩、中粗粒砂岩以及煤层等沉积组合，具有砂泥薄互层层理、斜波状层理、水平层理及大型交错层理等沉积结构。
The test data indicate that there is a marked difference in composition and physical property between Triassic and Jurassic Series.
化验资料表明，三选统与侏罗统中的油气在组分和物性上具有明显差异。
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