The underground cavities mainly include three large cavities. In the area of the left bank, rock body is mainly composed of Permian Period-Triassic Period granite and Triassic Period siltstones and mudstones (T2m). Moreover, the rock body has been more faulted, such as F1 F3 F9 and so on. In addition, there also exist a lot of joints and form complex rock mass structure.
工程区主要出露二迭纪～三迭纪花岗岩体(γ_4~3～γ_5~1)和三迭系中统忙怀组下段沉积岩T_(2m~1，发育有工程区规模最大的F_1和F_3断层，以及其它断层和大量的各类断续延伸的裂隙，岩体结构较为复杂。
In Permian Period, isolate carbonate platform margin and reef composite place, auriferous calcite vein had been affected Youjiang fault process.
在二叠纪孤立碳酸盐台地边缘和生物礁的复合部位，含金方解石脉受右江断裂作用影响，具有挤压、扭动、碎裂构造特征，矿体产状以脉状为主，次为不规则状。
Types of fluid inclusions and their homogenization temperature, fluorescent indicator of organic inclusions, the burial history and the paleo-temperature history of the basin indicate that there are three hydrocarbon charges: the Late Permian-Late Triassic period, the Late Triassic|Middle Late Cretaceous period and the period after the Late Cretaceous. The first stage inclusions mainly are distributed in the calcite veins with low abundance and low maturity. The second stage inclusions are distributed in the calcite and quartz which fill in pores. The second stage inclusions are abundant and this stage is the main hydrocarbon accumulating stage. The third stage inclusions are distributed in the calcite filling in pores.
通过对三塘湖盆地有机包裹体类型、均一温度及荧光特征等的研究，结合研究区埋藏史和古地温资料综合分析认为：卡拉岗组油藏有3期明显油气充注，第1期发生于晚二叠世-晚三叠世，有机包裹体主要分布于方解石脉中，以液态烃相包裹体为主，丰度低、成熟度低，对油气成藏贡献小；第2期发生于晚三叠世-白垩纪中晚期，有机包裹体主要分布于孔洞充填方解石及孔洞充填石英中，丰度高，是卡拉岗组油气藏的主要形成时期；第3期发生于白垩纪晚期以后，有机包裹体主要分布于孔洞里充填的方解石中。
Through micro-FTIR analysis of bituminous coal and anthracite of Carboniferous-Permian period located in Pingdingshan mine, Zhengzhou mine and Nanpiao mine, the organic molecular characters of deformed coal and undeformed coal and their effecting factors are studied.
通过对平顶山、郑州和南票三大矿区石炭二叠纪含煤岩系中高煤级烟煤和无烟煤的显微傅立叶红外光谱分析，探讨了原生结构煤与构造煤的有机大分子结构演化特征及其影响因素。
The gas resources in the northeastern Sichuan basin is the object investigated inthis paper. Taking multidisciplinary crossing theories as guide, basing on the gasreservoir geological features and the high sulphur content feature in the district, introducing the opinion of the sustainable development, two questions, theexploitation and utilization of the gas resource in the northeastern Sichuan basin, specially in Dazhou and realization of the sustainable development of economy, society and environment in the old regions, are expounded here and some conclusionsare gotten as follow: On the basis of the comprehensive study of petrology, mineralogy, reservoirsedimentology and isotope geochemistry, the sedimentary facies of Permian andTriassic carbonate formation are analysed and the corresponding sedimentationmodels are formed; The plane distribution of sedimentary facies are drawed and thegeometric shape, distribution and evolution of the facies during the differentdevolopment period are discussed; The characteristics of reservoir in the ChangxingFormation and Feixianguan Formation are analysed and it is considered thatdolomitization, corrosion and tectonic disruption are constructive diageneses andcementation and compaction are destructive diageneses. It is put forward for the firsttime that the reservoir is the result of multiphasic and multistage burieddolomitization. Owing to TSR event in deep embedding corrosion effect, the highquality reservoirs in the Changxing Formation and Feixianguan Formation in thenortheastern Sichuan basin were formed and gas resources were accumulated here. Analysed the formation condition and the origin mechanism of the high-H_2S gas inthe northeastern Sichuan basin, gypse is the requirement of forming H_2S, and thetemperature reservoir experienced and the components of hydrocarbon are key factorsof controlling the TSR reaction course and forming H_2S. Moreover the types of reservoir rocks and its space composite relation with evaporates and the seal ability ofcaprock are also the important factors of forming H_2S. So it is more difficult anddangerous for exploration and development in the northeastern Sichuan basin becauseof the high sulphur content and high-pressure characteristic and it maybe has anegative influence on ecological environment.
论文以川东北地区天然气资源为研究对象，采用多学科交叉理论知识为指导，在对川东北地区天然气成藏地质特征和高含硫特征论述基础上，引入可持续发展观，对川东北地区、特别是达州市天然气资源开发利用及其对实现老区经济、社会和环境的可持续发展问题进行了系统阐述，取得了如下认识：以系统的岩石学、矿物学、储层沉积学、微量元素和同位素地球化学的综合研究为依据，对川东北地区二、三叠系的碳酸盐岩地层进行了沉积相特征分析，并建立了相应的沉积模式；编制了气藏主要发育层位的沉积相平面展布图，讨论了沉积相在不同发育时期的几何形态、平面展布和演化特点；对长兴组和飞仙关组气藏储层特征进行了分析，认为白云岩化、溶蚀和构造破裂作用为建设性成岩作用，而胶结、压实等作用为破坏性成岩作用，首次提出储层是多期次、多阶段埋藏成岩白云岩化作用的产物，并认为川东北地区长兴组和飞仙关组优质储层的发育和天然气聚集成藏，在很大程度下得益于深埋藏溶蚀过程中发生的TSR事件；对川东北地区天然气高含H_2S的形成条件和成因机理分析认为，石膏是H_2S形成的必备条件，储层经历的温度和烃类的组成是控制TSR反应进程并形成H_2S的关键因素，储集岩类型及与膏盐空间组合关系、盖层封闭性能也是控制H_2S形成的重要因素，并提出川东北地区天然气藏高含硫、高压特性使得气藏勘探开发难度大，危险程度高，并可能会对生态环境带来的负面影响。
For some reason, most life on Earth died outabout 252 million years ago at the end of the Permian period.
由于某些原因，在25千万年前的二迭纪末地球上大部分生命消亡。
The Permian Period is an important period for geological evolution of the Tarim basin.
二叠纪是塔里木盆地演化的一个很重要阶段。
Permian The most recent period of the Paleozoic era, some 280-250 million years ago.
二叠纪：古生代的最后一纪，大约2.8亿～2.5亿年前。
For some reason, most life on Earth died out about 252 million years ago at the end of the Permian period.
由于某些原因，在25千万年前的二迭纪末地球上大部分生命消亡。
The largest mass extinction that ever occurred was the one that happened at the end of the Permian period 251 million years ago, which wiped out some 95 percent of all species living at the time.
规模最大的大灭绝事件是发生在251，000，000年前二迭纪晚期，其毁灭了当时存在的大约95%的物种。
Cycads are plants extending back 250 million years to the early Permian period, before dinosaurs roamed the Earth.
苏铁类植物是可追溯二点五零亿年以早二叠纪时期，在恐龙出没的地球。
At the end of the Permian Period have been complex amalgams of climate change perhaps rooted in plate tectonics movements.
：地质构造论中二迭纪发生的大范围地壳运动和气候的复杂多变可以解释这次起码到现在为止是最大规模的大量物种灭绝。
Scutosaurus was a genus of armour-covered Permian period pareiasaur.
斯龙是二叠纪时期全身披甲的巨颊龙的一种。
On the basis of the framework of high resolution sequence stratigraphy, thearticle systematically studied the sedimentary faciesIn virtue of analysis of well logging facies, seismic facies and intervalvelocity-lithological prediction, the type and distribution of sedimentary facies werestudied. These results show: during Cambrian-Ordovician period, it mostly develop aset of carbonate rock sedimentary system, there are different distribution between theeast and west of Luntai area; a series of continental-source clastic sedimentary systemdeveloped during Silurian-Devonian period, in the mass, it belongs to deep watertrough mare basin and onshore environment; during Carboniferous-Permian period, aset of basalt was mostly deposited, which was continental facies and onshore-shallowsea sedimentary system.5. Through analyzing the assemblage of resource, reservoir and seal rocks, thefavorable zone was predicted.
在高分辨率层序地层格架的基础上，进行沉积特征研究通过单井测井相和地震相分析，对两北地区沉积相的类型及空间分布进行了研究，研究表明：寒武系-奥陶系是一套以碳酸盐为主的沉积体系，为台地相沉积；志留系-泥盆系为一套陆源碎屑沉积体系，从总体上看，属深水凹槽海盆环境和滨岸环境中的陆源碎屑沉积；石炭系-二叠系为一套碎屑岩夹玄武岩为主的陆相-滨浅海沉积体系。5。
Any of various large, segmented aquatic arthropods of the order Eurypterida that existed from the Ordovician Period to the Permian Period.
板足鲎目的一种巨大的、有节的，属于板足鲎目的水生节肢动物，生存于奥陶纪到二叠纪时期
Coelurosauravus are roughly iguana sized lizard-like diapsid reptiles native to the Permian period.
空尾蜥是土生土长在二叠纪的，一种外表酷似鬣蜥体形与蜥蜴一般大小的双窝类爬行动物。
Based on the above, the paper also elaborates systematically the evolution of δ 13C and δ 18O in the Permian marine carbonate rocks and its relation with sea level change and establishes the evolution curves of the carbon and oxygen isotopes in the Permian period.
在此基础上系统阐述了整个二叠纪海相碳酸盐岩的δ13C和δ18O的演化与海平面升降的关系，第一次系统建立了二叠纪古海洋碳酸盐岩的碳、氧同位素演化曲线。
Besides, we also find that there are magma thermal actions during the Carboniferous period and early Permian period.
此外，还发现有早期（石炭纪&二叠纪）岩浆热力作用事件。
The currently developed reservoirs are low resistivity reservoirs in Tertiary and Cretaceous, low porosity and low permeability reservoirs in Jurassic and sand-conglomerate reservoirs in Permian and Triassic as well as volcanic rock in carboniferous period.
现已探明开发的油藏主要有第三系和白垩系的低电阻率油藏、侏罗系低孔隙度低渗透率油藏、二叠系和三叠系的砂砾岩油藏以及石炭系的火山岩油藏等。
I propose that those basins be compared to the Black Sea and Caspian Basins, and suggest that Junggar was formed during the Carboniferous Period, and Tarim and Qaidam during the Permian Period, as back-arc basins behind volcanic arcs on the southern active margin of Paleozoic Asia.
作者主张这些盆地可以与黑海和里海盆地相比较，并提出准噶尔盆地形成在石碳纪，塔里木和柴达木盆地形成在二叠纪，它们是古生代亚洲南部活动边缘火山弧后面的残留盆地。