upper permian series

常见例句

The Upper Permian volcanic rocks are a series of high Mg meta-alkalic basic-ultrabasic ones with the features of basalt in the rift ocean basin of rapid opening;
上二叠统火山岩，为一套高镁质偏碱性的基性一超基性火山岩，具快速张裂之裂谷洋盆玄武岩特征；
The pyrite deposit in Huangchangping, Jianshi appears stratified(in ore beds)or stratoid(in bedded vein)occurring at the lower part of Wujiaping Formation of the upper series of Permian System;
本文介绍了川东—鄂西与毗邻地区二叠系上统吴家坪组黄铁矿床的特征、分布规律；
The Lower Carboniferous Ceshui and Upper Permian Longtan coal series are most important in Southeast China, and can both generate and bear gas greatly in the Lianyuan coal basin, Central Hunan, China.
湘中涟源煤盆地早石炭世测水组、晚二叠世龙潭组煤系是中国东南诸省境内最重要的煤系，具有较大的生气、储气能力。