火山岩

The characteristics of Gama-ray and DLL of volcanic vent facies,explosive facies,effusive facies and extrusive facies were picked up by researching the logging data of volcanic lithofacies in wangsheng region.

火山岩相类型多，分析难度大，一直是该储层评价技术走向成熟和完善的瓶颈。测井资料在火山岩相分析中的应用至今已有30年的历史，但应用成果不多，某些方面还不够成熟。

On the basis of ensuring T_2 cutoff value, author analyzed relationship between NMR irreducible water saturation in different cores and porosity、permeability, and established analytic method of irreducible water saturation、movable fluid saturation of vulcanite core. NMR results of some Daqing oilfield vulcanite cores and gas test results of corresponding reservoir and CT results were compared in this ***.

在保证T_2截止值正确的基础上，本文对实验岩心核磁共振束缚水饱和度与孔隙度、渗透率之间的相关性进行了细致分析，建立了火山岩岩心束缚水饱和度、可动流体饱和度分析方法，并对大庆油田部分火山岩岩心核磁分析结果与对应储层试气成果及岩心CT分析结果进行了比较。

Facing the concrete feature of Mesozoic vulcanite in Youyangou of Liaohe eastern depression,the paper uses the ratio of P-wave velocities[1～3]——the fractural analysis approach by flexural strength to study the development degree of vulcanite fracture.

本文针对辽河东部凹陷油燕沟中生界火山岩的具体特征，采用纵波波速的比值——"龟裂系数"裂缝分析法[1，2，3]，研究了火山岩裂隙发育程度。

Each of cores were carried on NMR measurement after each of six or seven different centrifugal force, author can got that 200 psi was suitable to be best centrifugal force calibrating T_2 cutoff value for glutenite cores, and 400 psi was suitable for carbonatite and vulcanite cores in this ***, and corresponding lower limit of valid throat is 0.1μm for glutenite and 0.05μm for carbonatite and vulcanite.

对本文实验选取的岩心而言，低孔、低渗砂砾岩岩心T_2截止值标定时适合的最佳离心力均大致可取200psi，而碳酸岩和火山岩岩心最佳离心力均大致可取400psi，对应的有效渗流喉道半径下限砂砾岩为0.1μm，碳酸岩和火山岩为0.05μm。

Vulcanite reservoir ; Youyangou ditch ; flexural strength ; steep angled fracture ; fractural coefficient ; vulcanite framework parameter

火山岩储集层；油燕沟；龟裂系数分析；高角度裂缝；裂隙系数；火山岩骨架参数

The large-scale volcanic activities during fault-depression period and the strong geothermal field resulted from the huge thick and stable sediment during depression period sped up the transformation of hydrocarbon source rock and resulted in the formation of large amount of abiogenetic gas.

断陷期大规模火山活动，坳陷期巨厚而又稳定的沉积产生的强地温场加速了烃源岩的转化，并有无机成因气大量产生，营城组沉积时数万平方千米范围的火山喷发，形成了爆发相和喷溢相叠合的有利相带，发育了具有孔隙和裂缝双重介质中酸性火山岩储集体，相对独立的火山岩体在巨厚的沉积盖层下形成独特的圈闭类型。

Which were found in succession in the Yili Late Paleozoic volcanic rock province in the north section of West Tianshan Mountains ,are considered as epithermal mineralizing type,and furtherly divided into adular sericite sub type and silicated rock sub type.

20世纪90年代，在新疆西天山北段晚古生代火山岩区内相继发现了阿希大型金矿床及其外围的伊尔曼得、恰布坎卓它等金矿床，并进一步确定了其系产于晚古生代火山岩内的浅成低温矿床。

Results show that the Spiti shale in Zanskar terminated 15Ma later than that in southern Tibet, while the lowermost Cretaceous quartz sandstone in Zanskar appeared 18Ma later than that in southern Tibet. The age of volcanic sandstone in southern Tibet is very poorly time constraint and their deposition occurred somewhere within Berriasian～early Albian. In Thakkhola, the Chukh Group volcanic sandstone are of late Hauterivian-early Albian age (duration about 20Ma), while in Zanskar, the volcanic sandstones facies only appeared in Albian (duration of less than 10Ma). Therefore, it can be concluded that the onsets of both quartz sandstone and volcanic sandstone occurred earlier in eastern Tethys Himalayas than in western Tethys Himalayas .

侏罗纪末～白垩纪初印度大陆的北缘同时期存在大陆向上挠曲，导致陆源碎屑输入量的快速增加，石英砂岩广泛存在；早白垩世火山岩屑砂岩对应着的印度大陆北缘地层侵蚀加深，使得较深部的深成火山岩暴露并遭受侵蚀；石英砂岩和早白垩世岩屑砂岩所代表的印度大陆剥露时间在空间上的&东早西晚&，说明构造运动首先是从特提斯喜马拉雅的东部开始（大印度与澳大利亚的彻底分离），然后逐渐波及西部的，东西时间差为15～20Ma；由于地壳均衡作用，大陆分离后原先地壳挠曲转变为地壳下沉，发生强烈的构造沉降，故Albian之后沉积一套深水环境下的海绿石、磷酸盐和黑色页岩沉积。

In east adjacent regions Toudaogou of Hami, Zhou Ji yuan found brachiopoda fossil of Early Ordovician in the same stratum of pyroclastic rock with intemediate-basic volcanics: Orthambonites sp., O.

东邻区哈密头道沟，周济元等在相当于火山岩建造的上部层位的火山碎屑岩夹中基性火山岩中发现早奥陶世腕足化石：Orthambonites sp。， O。

Hypogene high thermal or deep source epi-mesothermal condition and it is not only stressed the mantle source simply but also the crust-mantle;②in order to guid ore exploration better the artificial classification of uranium deposits should be broken and uranium ore-forming system strengthened;③much attention should be paid to searching the diabase-hosted rich uranium ore in strongly argillized cataclastic zone;④attention should be paid to the influence of basement of volcanic basin on the uranium ore formation that should be undstood both in feeling and theoretically through the ore propect process;⑤relation of red basin with uranium ore formation can be made clear from analyzing tectonics, paleo-climate and time and it is not only theoretically important but also helpful to uranium ore prediction;⑥crypto explosive pipe is an uranium ore, rich uranium ore host structure and it is the next goal for uranium ore exploration in east China.

摘要文章论述了华东火山岩型铀矿找矿值得重视的地质问题：①铀成矿既可形成于浅源浅成低温条件，也可形成于深源深成高温或深源浅成中低温条件，在强调深源时，不是简单地认为是幔源就可以了，还必须强调壳幔作用的地质过程；②打破人为的&类型&划分，加强&铀成矿系统&的研究，更好地指导找矿；③研究基性脉体与铀成矿问题应注意构造、岩石矿物成分、成因、蚀变与成矿3大问题，注意寻找泥岩化作用强烈的破碎辉绿岩脉中的富铀矿；④火山盆地基底对铀成矿的作用主要是提供铀源，将基底对铀成矿的影响从感性认识推向理性认识，有效地指导找矿；⑤红盆与铀成矿关系可以从构造、古气候及时间分析研究中得出结论，它不仅仅是一个理论问题，而且有助于铀成矿预测；⑥隐爆角砾岩筒是铀成矿、成富矿的重要储矿构造，是华东火山岩型铀矿找矿的新领域。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。