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巖、细砂巖、中粗粒砂巖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 cross-(formation) movement of the fluids between upper triassic series and jurassic series formed the jurassic gas reservoirs.
川西前陆盆地侏罗系天然气藏是上三叠统与侏罗系之间流体的跨层流动形成的。
in recent years, new breakthroughs have been made in gas exploration in the shallow zones of upper triassic series and jurassic system in dukou river area in the north of east sichuan.
近年在川东北部渡口河地区的上三叠统、侏罗系浅层又有了新的突破。
the stratiform and strata-bound iron ore deposits in the middle triassic series in the lower reaches of the yangzi river were formerly considered as simple contact-metasomatic ore deposits.
长江中下游中三迭统层状—层控型铁矿床,曾被传统地视为典型的接触交代型矿床。