青海五龙沟地区岩金沟金矿床地质特征

青海五龙沟金矿床是东昆仑成矿带大型矿集区之一,具有十分重要的经济价值与研究意义。五龙沟金矿区地处青海省都兰县境内,属于青藏高原北部的东昆仑山。岩金沟矿床位于五龙沟金矿区。矿区主要出露地层有太古-下元古界金水口群、中元古界小庙群、上元古界丘吉东沟群。岩金沟矿区断裂构造极为发育,金矿体产出及形态严重受限于断裂构造分布及规模,主要分布在北西向含金破碎蚀变带中,围岩蚀变以硅化、绢云母化、高岭土化和黄铁矿化为主,且黄铁矿为主要载金矿物。     

富蕴县翁格尔阔腊北金矿矿床特征及矿床成因分析

富蕴县翁格尔阔腊北金矿是阿尔泰铜、银、金多金属成矿带中规模较大的金矿点,出露地层主要为晚古生界泥盆系、石炭系地层,钙质绢云千枚岩、蚀变粉砂质板岩、钙质绿泥絹云千枚岩地层为金的矿源层。通过对矿区地质特征及成矿模式分析,翁格尔阔腊北金矿是在近地表环境中形成的浅成低温热液型金矿床。     

陕西铧厂沟金矿床地质特征及成矿规律

铧厂沟金矿床位于秦岭褶皱系南部,北距康县—略阳—勉县深大断裂4 km。金矿化严格受地层、岩性及韧性剪切带控制,主要控矿层位为蚀变细碧岩及灰岩与粉砂质千枚岩之间的过渡部位,控矿构造多为压扭性断裂。金矿体呈脉状和透镜状产出,矿化带类型以蚀变细碧岩型及蚀变碳酸盐岩型为主,黄铁矿是矿石中最主要的载金矿物。矿石中金的赋存状态主要为包裹金和裂隙金,粒间金次之,围岩蚀变主要有黄铁矿化、硅化、碳酸盐化、钠长石化和绢云母化等。黄铁矿热电系数和原生晕地球化学研究显示,本区金矿体向深部有一定的延伸,应重点加强细碧岩型矿带和砂岩矿带的地质找矿与探矿工作。     

黔东南地区蚀变岩型金矿床地质特征及找矿方向分析

蚀变岩型金矿是能够形成超大型金矿床的金矿类型之一,超大型蚀变岩金矿床在形成时间、形成期次、含矿岩系、围岩蚀变、区域及矿区构造上都有其独特性。贵州省东南部成矿条件好,与世界许多大型超大型蚀变岩型金矿有类似的成矿地质背景,该区分布的蚀变岩型金矿床特征与其他大型超大型蚀变岩金矿有很多相似之处,从含矿岩系、控矿构造、矿物共生组合及成矿温度等诸多方面均表明黔东南蚀变岩型金成矿带的深部有巨大的寻找该类型金矿床的找矿潜力。     

甘肃北金山金矿地质特征及成因

北金山金矿区位于文县—康县金矿带内,属阳山矿带7个矿段之一。目前该矿区已发现3条矿化蚀变破碎带,均产于中泥盆统三河口组第二岩性段蚀变千枚岩中。断裂是北金山金矿区成矿最主要的控制因素。该区虽未见岩浆岩出露,但构造滑动时产生的热液和邻近的阳山超大型金矿岩浆活动产生的热卤水使金的溶解度增高,促使金和其他元素活化迁移,在有利的构造部位成矿。该矿床具有黄铁矿化、硅化、绢云母化及碳酸盐化等中低温热液蚀变组合,初步认为该矿床为热液破碎蚀变岩型金矿床。     

甘肃小东沟金矿床地质特征及控矿因素分析

小东沟金矿床属于蚀变岩型金矿 ,产于西秦岭泥盆系中统碎屑岩中 ,蚀变以硅化、黄铁矿化、褐铁矿化、碳酸盐化、绢云母化为特征。矿石中金以自然金为主 ,黄铁矿、褐铁矿、石英是主要的载金矿物。断裂构造是矿床最主要的控矿因素     

湖南临湘荆竹大山金矿地质特征及成因分析

荆竹大山金矿位于湖南省临湘市北部,属于湘东北金矿矿集区。矿区处于扬子地台褶皱区的南部,新华夏系北东向沙湖-湘阴深切断裂的东侧,临湘山字型弧形构造的中心部位,区内构造复杂,有利于成矿。出露元古界冷家溪群地层,岩性较单一,岩浆岩不发育。通过对金矿床的地质特征、矿石矿物组成、成矿条件等进行系统的研究表明,该矿床受断裂构造的控制,沿断裂带局部充填石英脉,并出现硅化、绢云母化、黄铁矿化等矿化蚀变。该金矿成因类型应属于中低温热液裂隙充填型,工业类型为蚀变破碎岩型金矿和石英脉型金矿,其中蚀变破碎岩型金矿是区内的主要金矿类型。     

随县杨家祠堂金矿围岩蚀变特征与找矿分析

为了解湖北省随县杨家祠堂矿区金矿赋存规律,湖北省地质局地质八队开展了野外地质调查工作,并通过岩矿测试等工作,对矿区地层、构造、岩浆岩及三者与矿产的相互关系获得了阶段性成果,本文侧重对矿区主要岩石及成分、近矿围岩蚀变、蚀变类型、蚀变分带性、蚀变作用与矿化关系进行分析研究,认为矿床为造山蚀变岩型金矿床。     

胶东磨山金矿床主要金属矿物的矿物学特征及矿床成因研究

磨山金矿床是产于鹊山岩体东北部受小规模断裂及裂隙控制的破碎带蚀变岩型金矿。利用显微矿相学对磨山金矿床的矿石特征、主要金属矿物特征及金矿物特征进行了系统研究,确定了矿石矿物共生组合和主要矿物的生成顺序,并划分为3个矿化阶段;认为胶东型金矿的矿物组合与造山型、浅成低温热液型等其他金矿床类型有明显差异,是一种独特的金矿床类型。磨山金矿床矿石中金矿物均为自然金,且大部分为粒径＞0.037 mm的中粗粒金,偶见明金,金矿物成分、粒度与胶西北地区的蚀变岩型金矿有明显差异,由此指出磨山矿区赋矿岩石中空隙发育、矿区受早白垩世岩浆活动较高温的影响期长,是产生粗粒自然金的主要原因。     

黔东南坑头金矿成矿模式研究

黔东南金矿区是鄂西—湘西成矿带的南延部分,分布有石英脉型金矿及蚀变岩型金矿。坑头金矿是区内首次发现产于断层破碎带内的构造蚀变岩型金矿床,本文基于矿床地质特征,从其控矿因素分析,提出断层褶皱耦合控矿的金矿成矿模式。     

Religion, self-regulation, and self-control: Associations, explanations, and implications.

Many of the links of religiousness with health, well-being, and social behavior may be due to religion's influences on self-control or self-regulation. Using Carver and Scheier's (1998) theory of self-regulation as a framework for organizing the empirical research, the authors review evidence relevant to 6 propositions: (a) that religion can promote self-control; (b) that religion influences how goals are selected, pursued, and organized; (c) that religion facilitates self-monitoring; (d) that religion fosters the development of self-regulatory strength; (e) that religion prescribes and fosters proficiency in a suite of self-regulatory behaviors; and (f) that some of religion's influences on health, well-being, and social behavior may result from religion's influences on self-control and self-regulation. The authors conclude with suggestions for future research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Earnings, education, genetics, and environment

A major and well-recognized difficulty in estimating the effects of education on earnings is that the more educated are likely to be more able, irrespective of education. If ability also determines earnings and is not controlled, ordinary least squares will yield biased estimates of the education coefficient. In this study, we use data on identical twins to control for differences in ability that arise from genetic endowments and family environment. Not controlling for genetics and family environment may cause a large bias, up to two-thirds of the noncontrolled coefficient.     

Person, body, cadaver, and back

Because of the small size of their genome, viral genes have been forerunners in helping us understand gene expression. It is also because of their small size that viruses have elaborated the amazing variety of strategies that enables them to produce all the proteins they require for their multiplication. As a consequence, many of the strategies of expression known to occur in cell systems were first demonstrated in viruses. The aim of this review is to highlight the contribution of viruses to our knowledge of cell processes.     

Shyness and children's emotionality, regulation, and coping: contemporaneous, longitudinal, and across-context relations

The relations of teachers' and parents' reports of children's shyness (i.e., social inhibition) at ages 6-8, 8-10, and 10-12 years to dispositional regulation, emotionality, and coping were examined. Shyness was positively related to internalizing negative emotion, coping by doing nothing, and, for parent-rated shyness, behavioral inhibition/nonimpulsivity, attention focusing, and avoidant coping; it was negatively related to positive emotionality, instrumental coping, seeking support from teachers (at younger ages), and for teacher-rated shyness, attentional control. Often prediction held over several years and/or across reporters. Parent-reported internalizing negative emotion at age 4-6 predicted shyness at ages 6-8 and 8-10, but primarily for children low in attention shifting. Teacher-rated shyness was related to low social status; parent-rated shyness correlated with boys' adult-rated social status at age 4-6 and with style of social interaction, particularly for girls. The relation between parent- and teacher-reported shyness decreased with age. The overall pattern of findings was partially consistent with the conclusion that parent-rated shyness reflected primarily social wariness with unfamiliar people (i.e., temperamental shyness), whereas teacher-rated shyness tapped social inhibition due to social evaluative concerns.