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- The Lower Palaeozoic group mainly includes Cambrian, medial and lower Ordovician, which are marine carbonate in the district. 下古生界包括寒武系和下、中奥陶统，主要由海相碳酸盐岩构成。
- It is imperative to evaluate the high-and post-mature marine carbonate rocks of the Lower Palaeozoic. 如何评价下古生界高-过成熟海相碳酸盐岩成熟度是当前急需解决的问题。
- The Yangjin'gou scheelite deposit occurs in Wudaogou group of lower palaeozoic Erathem. 杨金沟白钨矿床产于下古生界五道沟群中。
- The proved reserves in Cenozoic, Mesozoic, Upper Palaeozoic, Lower Palaeozoic, Proterozoic respectively are 38%, 17%, 30%, 13% and 2% in total. 新生界、中生界、上古生界、下古生界和元古界分别占总探明地质储量的 38%25、17%25、30%25、13%25和 2%25。
- The configuration of Ordovician of lower Palaeozoic system highly inherits that of Archaean group and both have a strong consistency. 下古生界奥陶系构造具有很强的继承性，其构造格局与太古界有很强的一致性；
- This shudy summerizes the characteristics of secondary hydrocarbon generation in the Lower Palaeozoic marine carbonate rocks in North China. 本文总结了华北地区下古生界海相碳酸盐岩二次生烃作用的四大特征；
- The result is of important significance in evaluating oil-gas prospects of the Lower Palaeozoic marine carbonate rocks in North China. 这一认识对评价华北地区下古生界海相碳酸盐岩的含油气远景具有重要的意义。
- Researching the hydrocarbon source rocks of Lower Palaeozoic in North China is very important to the pre-Tertiary oil-gas strategic precinct. 摘要华北地区下古生界烃源岩研究对前第三系油气战略资源选区具有重要意义。
- The buried hill reservoir in lower Palaeozoic was a layered reservoir, with inner vug and inner fracture reservoirs as major types. 其中下古生界古潜山油气藏属层状油气藏,储层主要为内幕孔洞型储层和内幕裂缝型储层。
- The deposit in discussion occurs in the mica schist within the Hulan Group of the Lower Palaeozoic era and is controlled by stratigraphic horizon and lithological character. 矿床产于下古生界呼兰群石榴石蓝晶石云母片岩中,受层位和岩性控制。
- Kerogen, adsorbed organic matter, inclusion organic matter and enclosed organic matter in the Lower Palaeozoic source rocks can serve as the source of hydrocarbon regeneration. 塔中地区下古生界碳酸盐岩烃源岩中的干酪根、吸附有机质、包裹体有机质和晶包有机质 ,可以成为二次生烃的物质来源。
- Major oil - bearing horizons of Futai oilfield were lower Palaeozoic and the upper member of Sha 3 formation of Tertiary, belonging to complicated reservoir. 富台油田主力含油层位为下古生界及第三系沙三段上亚段,属复式油气藏。
- The deformation of shear zone started in Lower Palaeozoic Era (410 79Ma). The major deformational time of shear zone was Upper Palaeozoic Era (374 8Ma). There were small-scale ductile deformations in Mesozoic Era and Cenozoic Era. 剪切带岩石变形始于早古生代（410.;79Ma），晚古生代（374
- In recent years, a great breakthrough has been made in exploration of buried hill in the north of Chexi.Buried hill reservoirs have been discovered in Archaean, lower Palaeozoic, and upper Palaeozoic. 近几年,车西北部古潜山带的勘探获重大突破,发现了太古宇、下古生界、上古生界等多层系的古潜山油气藏,油气藏类型有风化壳型、古潜山内幕型。
- The organic maturity of lower Palaeozoic in the eastern Yangzi Gorges area is studied by means of a new technique of kerogen infrared spectroscopy,combined with conodont color alteration index. 应用干酪根红外光谱技术，结合牙形石色变指数分析了峡东地区下古生界有机质成熟度。探讨了在缺乏镜质体的前泥盆纪地层和海相地层中分析有机质成熟度或古地温的另一有效途径。
- The Haoping gold ore deposit is in carbonaceous silicified slate and carbonaceous mica quartz schist of lower Damiao Formation,Erlangping Group, lower Palaeozoic It is controled by interla yer fault. 蒿坪金矿产于下古生界二郎坪群大庙组底部碳硅质板岩及碳质云母石英片岩中，受层间断裂控制。
- The slope between eastern depression and middle uplift was regarded as a favorable area for reservoir distribution, so it was the main target of petroleum exploration in lower Palaeozoic. 分析认为：东部坳陷与中部隆起之间的斜坡带为岩溶储层展布的有利区域，是下古生界油气勘探的重点；
- Close to Chexi and Dawangbei oil-generation subsag, Futai oilfield has favorable conditions of forming the weathering crust and interior reservoirs in Lower Palaeozoic buried hills. 富台油田邻近车西和大王北两个生油洼陷,具有形成下古生界潜山风化壳油藏与潜山内幕油藏的有利条件。
- It is controled by fracture in the contact zone between Precambrian system and Lower Palaeozoic migmatitic gneiss and Yanshanian granite.Ore bodies occur absolutely in fractural zone as veins, lens. 矿床产出受前寒武系及下古生界混合片麻岩与燕山晚期花岗岩之间的接触带断裂构造控制,矿体严格产于断裂带内部,呈脉状、透镜状。
- THE LOWER PALAEOZOIC OF TIANSHAN, XINJIANG 新疆天山下古生界
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