lower cambrian造句

• Helcionelloid mollusk from the lower cambrian heilinpu formation , chengjiang , yunnan
  云南澄江早寒武世黑林铺组软体动物太阳女神螺
• Abstract : the gongxi barite deposit hosts in the niutitang formation of the lower cambrian
  文摘:湖南新晃贡溪重晶石矿床赋存于下寒武统牛蹄塘组中。
• The clastic rocks distribute mainly in the lower cambrian and the carbonate rocks in the upper part of the lower cambrian and middle and upper cambrian
  碎屑岩主要分布在下寒武统；下寒武统上部和中、上寒武统主要由碳酸盐岩构成。
• Comparisons of the sequence with those reported from the lower cambrian of northwestern hunan province as well as lower cambrian ooid banks of central guizhou province would be of much implication
  该风暴沉积的发现，对建立与黔中和湘西北同期地层的沉积学对比剖面、探讨风暴沉积模式的空间变化具有重要意义。
• The geological setting of chengjiang biota firstly , the pattern of chinese tectonic has been cited , which can help us to understand the place of china in the world clearly and easily . secondly , the lower cambrian of china and the early cambrian geomorph of eastern yunnan have been included
  澄江生物群的地质构造背景首先介绍了中国区域大地构造格局，其次是关于中国的寒武系和滇东地区早寒武世古地理概貌的论述，紧接着是澄江化石库的古地理概貌。
• By digussing the key exploration area of each structural unit , this paper pointed out : ( 1 ) look for the paleo - reservior foemed in late hercynian and second reservoir formed in himalyan periods in the west part of bachu arch ; ( 2 ) key exploration area in the east of bachu arch is middle - low cambrian self - generation and self - reservoir inside primary reservior . ( 3 ) the exploration on markit slope should focus on paleohigh formed during late caledonian , residual paleo - reservior ( middle - low cambrian primary inside reservoir , ordovician weathering crust oil / gas pool ) and subtle oil / gas trap formed in late period
  分析讨论了每个构造单元的勘探重点：在巴楚隆起西段应以寻找加里东期和海西晚期形成古油藏和喜山期形成的次生油藏为重点；巴楚隆起东段应以中下寒武的自生自储的原生内幕油气藏为主要勘探目标；麦盖提斜坡应以伽里东中晚期形成的古隆起，海西晚期形成的，现未被完全破坏的残留古油藏(中下寒武原生内幕油气藏、奥陶系风化壳油藏)和以石炭二叠为烃源岩的晚期成藏的隐闭油气藏二者并重的方针。