大巴山地区铂矿地质特征及成因初探

大巴山铂矿产于秦岭地槽与扬子准地台的接合部位——城巴深断裂两侧的断块或岩体蚀变破碎带中 ,含矿层为上震旦统至下寒武统黑色岩系 ,含矿围岩具黄铁矿化、硅化、碳化现象。成矿物质来源、矿源初始富集与聚积成矿均与城巴深断裂的多期活动及早期火山喷发、多期岩浆侵入关系密切     

广西贵港-平南铅锌成矿带矿床成因及找矿前景

贵港一平南铅锌矿床是以热水沉积为主体,构造、岩浆热液迭加改造的多种类型的铅锌多金属矿床,受一系列ＮＮＥ－ＳＳＷ向的北斜（断裂）、向斜控制。研究表明：庆丰、锡基坑和平硐铅锌矿床仍有较大的找矿前景。     

铀矿床的天然类似物研究

本文叙述连山关铀矿床内的地下水和铀矿体中的12 9I和2 39Pu的测量结果。研究表明 ,铀矿床内的地下水把12 9I从铀矿石中淋滤出来 ,12 9I在地质环境中具有活泼的地球化学特征 ;铀矿体中积累的2 39Pu自该矿床形成 190 0Ma以来未发生迁移。     

下刚果-刚果扇盆地沉积-构造演化与油气勘探领域

摘要：下刚果-刚果扇盆地位于西非海岸,因其富含油气,资源潜力大,长期以来一直引起众多研究者的关注。由于该区盐构造发育,变形复杂,盆地不同地区和不同勘探目的层勘探程度并不均衡,如何全面认识和评价盆地油气资源潜力成为指导下步勘探工作的关键。通过盆地沉积-构造演化特征研究,指出下刚果-刚果扇盆地是由下刚果盆地与刚果扇盆地垂向上叠置、平面上复合所形成的叠合复合型含油气盆地,经历了前裂谷期、陆内裂谷期、陆间裂谷期和被动陆缘期等演化阶段;在构造特征分析基础上,综合考虑油气成藏要素和运聚方式等特点,划分出新生界构造-岩性圈闭、盐上白垩系构造圈闭和盐下白垩系等三个油气勘探领域;通过各勘探领域油气成藏特征等的系统分析,指出了盆地东部陆上-浅水地区是勘探盐上白垩系构造圈闭勘探领域和盐下白垩系勘探领域的有利地区,盆地西部深水-超深水地区是勘探新生界构造-岩性圈闭勘探领域的有利地区。     

东沟坝多金属矿床喷流沉积成矿特征的稀土元素地球化学示踪

为了进一步研究东沟坝矿床的喷流沉积成矿特征,对东沟坝矿床矿石及围岩的稀土元素进行了ICP-MS测定。东沟坝矿床矿石普遍显示明显的Eu正异常和弱的Ce负异常,说明成矿热液为温度较高(250℃及其以上)、相对还原的流体。Eu正异常和弱Ce负异常同时在矿石中发育,说明矿石沉淀时较高温度的热流体与少量的海水发生了对流混合。根据矿石与围岩的稀土配分模式的相似性及矿石铅、硫同位素组成特征,推断成矿金属元素主要来自赋矿围岩。根据矿石中大量发育重晶石和矿石普遍具有的LREE富集、明显的Eu正异常和弱Ce负异常的事实,推断同生成矿流体中大量SO4^2-的出现与岩浆脱气作用有关。     

八家子多金属矿床岩石和矿石稀土元素特征及成矿物质来源

八家子矿区岩石及矿石的稀土元素特征表明,圣宗庙岩体、八家子岩体为同源岩浆侵入体,草沟英交流纹斑岩与上述两岩体在物质来源上具有相关性;炉沟、瓦房沟、碱厂及宽帮岩体亦来自同一岩浆系统。成矿作用主要与炉沟及瓦房沟岩体有关,但成矿物质除岩浆源外,还部分地来源于混合花岗岩及地层。     

Structural-tectonic features of accommodation deposits of mineral waters of Azerbaijan and their complex development

The geological structure of the territory of Azerbaijan is characterized by numerous mineral waters of various chemical, gas, microcomponental structure, temperature and medical properties which are distributed over the territories of the Republic and their physical and chemical features are closely connected to the geostructural conditions of the individual districts in which they are found.     

昆明东川区播卡金矿地质

播卡金矿紧邻小江深大断面西侧，系省内目前发现、赋存于中元古界昆阳群地层中的最大金矿之一。根据获得的资料，以已知金矿段为重点，系统介绍播卡金矿的地质特征、成矿规律及找矿标志。     

全球镍资源分布及云南镍矿床

根据近年全球镍矿勘查和开发资料，简述镍资源的全球分布，并对当前主要开发的硫化镍矿床的成因类型进行分类。以我省金平白马寨镍矿、墨江镍矿为例，介绍岩浆熔离、风化壳型镍矿两种成因类型矿床，指出后者的开发利用应加强选矿技术的研发。     

Climate induced changes in the circulation and dispersal patterns of the fluvial sources during late Quaternary in the middle Bengal Fan

From a transact along 15‡N latitude in the middle Bengal Fan, temporal and spatial variations in the granulometric parameters and clay minerals in¹⁴C dated box cores from the eastern, the central and the western regions were studied to determine climate induced changes in the hydrography. Clay assemblages have spatial and temporal changes and are markedly different in the eastern and the western bay. From a high abundance of the clay smectite, which has its major source in the Deccan Basalt in peninsular India, it is inferred that the western bay is predominantly a depocenter of ‘peninsular sources”. The eastern and the central regions of the bay, however, mostly receive sediments of the ‘Himalayan source’. Related to unstable climate, the reported dominant illite-chlorite (I + C) assemblage in the eastern region of the bay (I + C > 60% smectite <15%), between 18 and 12.6 ka BP, points to a predominant supply from the Himalayan sources through equatorwards dispersal by the winter hydrography. Higher smectite, and reduced clays of the Himalayan sources (smectite > 25%; I + C > 45%) are reported also after 12.5 ka BP from the eastern bay. These are interpreted as evidences of an intensified SW monsoon and associated change in the dispersal pattern by stronger summer monsoon hydrography which supports across bay dispersal by anticyclonic gyre. The influence of climate on hydrographic changes is consistent during the short events of arid climate (weak NE monsoon) in Holocene in core 31/1 (western bay), in which the enhanced contents of the clays of the Himalayan sources are observed (smectite < 40% I + C > 50%). These findings have implications for climate regulated influence of fluvial processes over the areas, hitherto, considered unaffected by the Indian peninsular fluvial sources