二叠纪的 meaning in English
dyassic
permian
Examples
- According to the content of mgo , emeishan basalt can de divided into high - mg ( mgo > 12 % ) volcanic rock and lower - mg ( mgo < 12 % ) basalt
该区二叠纪的火山岩依据mgo 12可分为两个岩石化学类型：低镁火山岩即峨眉山玄武岩；高镁火山岩。 - This extensional activity is similar to the basin - and - range province of western america , and can be thought as an intra - continental tectonic system
此外，扬子地块西缘二叠纪的大陆伸展作用类似于美国西部的盆岭区，总体表现为大陆板块陆内构造体制。 - Based on the variation of light / heavy mineral components of sedimentary rocks , the typomorphic characteristics of various debris , the cathodoluminescence color of quartzes , the direction of paleocurrent and the extension of sedimentary facies , two source direction of the studied area in carboniferous and permian can be recognized , one is in bayanwusu , wulan ' ge ' er and hetaoyinshan area north of hangjinqi in the north margin of ordos , another is alashan area in the northwest margin of ordos
在深入研究本区沉积岩轻、重矿物组分的变化、各种岩屑的标型特征、石英阴极发光颜色、古水流方向及沉积相带展布等基础上，认为研究区石炭?二叠纪的物源方向主要有两个，分别为：北缘杭锦旗以北的巴彦乌苏、乌兰格尔及河套阴山地区；以及研究区西北缘的阿拉善地区。 - The basement of the basin is consist of precambrian crystal basement and paleozoic folding basement , while the cover has undergone the evolution of intra - continental rife in permian , down warped basin in triassic - cretaceous period and inter - mountains basin in tertiary . the main sediments are huge - thick volcanic rock , shallow intrusive rock and tuff in early permian , dark mudstone , marl and muddy dolostone in lucaogou formation in middle permian , huge thick volcanic rock , intruder in tiaohu formation in middle permian , miscellaneous sandy gravel , sandstone and gray mudstone in triassic ( the red is under the gray , and huge - thick dark gray , gray sandy gravel , sandstone , mudstone with coal layer in jurassic
盆地基底由前寒武纪结晶基底和古生代褶皱基底组成，盆地盖层则经历了二叠纪的裂谷盆地、三叠纪?白垩纪的坳陷盆地和第三纪后的山间盆地的演化过程。盆地主要沉积了下二叠统巨厚火山岩、浅成侵入岩和凝灰岩；中二叠统芦草沟组的暗色泥岩、泥灰岩、白云质岩石以及条湖组的巨厚层火山岩、侵入岩；三叠系杂色砂砾岩、砂岩及灰色泥岩(下红上灰) ；以及侏罗纪厚层深灰、灰色砂砾岩、砂岩、泥岩夹煤层。