东部盆地群下白垩统储层物性特征与影响因素

东北地区东部盆地群下白垩统发育常规储层和非常规致密储层两种类型的储层,为了研究这两种储层的分布特征、指导勘探部署,在搜集相关资料的基础上,完成了一些新的测试,研究了下白垩统储层的物性特征及其影响因素。结果表明:东部盆地群只有汤原断陷、方正断陷、宁安盆地、延吉盆地、珲春盆地、蛟河盆地和松江盆地的下白垩统储层属于常规储层,其余盆地的下白垩统为超—特低孔超低渗致密储层;储层物性主要受沉积相、成岩作用和构造抬升剥蚀的影响。从原型盆地的边缘到沉积中心,水动力减弱,粒度变细,储层厚度减小,物性变差。随储层成岩作用的增强,储层物性变差。研究区南部浅层的致密储层是由于3250 m左右的抬升剥蚀和火山喷发过程中的高温烘烤作用所造成的。     

琼东南盆地深水区构造格局和幕式演化过程

基于大量琼东南盆地深水区高精度的地质一地球物理和钻井资料解释.确立了该盆地"南北分带.东西分块.的基本构造格局;通过构造-地层,沉降史和沉降中心厘定等方面的综合研究"在琼东南深水盆地中深人描述和分析了T70重要的构造变革界面特征.该界面之下发育了一系列分散的、NF向展布的小型断陷盆地群.该界而之上一直到T60界面发育时期.盆地的沉降中心逐渐迁移到位于琼东南盆地中央坳陷区的、旱NE WE NWW弧形展布的大型断坳式盆地内,该断坳盆地与下伏小型断陷盆地群构成显著的叠加关系;以控盆边界断层的性质和儿何学分布.确定下伏的NE向展布的小型断陷盆地群受控于NW-SE向拉伸应力场,而上覆的断坳盆地由近SN向拉伸应力作用所形成;区域对比表明该界面广泛分布于南海北部大陆边缘盆地中.具有区域性分布的特征;生物地层和区域对比表明该界面年龄为32Ma,与南海初始扩张的年龄一致.因此.该界面是一个发育于南海北部的、代表界南海扩张开始的一个区域性构造变革界而.该界面的发育导致了琼东南盆地深水区盆地结构和构造演化的复杂性.以该界面为基础,结合盆地允填序列中的其他重要界而和盆地的沉降史分析.将盆地的构造演化划分为断陷,断坳、裂后热沉降和加速沉降4个构造演化幕.从而确定了该盆地终有典型的幕式演化特征;详细讨论界盆地周缘板块运动学重组事件和岩石圈深部活动对琼东南盆地幕式发育过程的控制机制.     

班公湖—怒江结合带构造演化与成矿作用

班公湖—怒江结合带构造演化过程与成矿作用密切相关。作为青藏高原一条重要的地质界线,了解其演化历史不仅对于了解整个青藏高原的演化过程具有十分重要的意义,还同时有利于了解其周围同时期元素的富集成矿作用。本文通过研究班—怒带分别在侏罗纪、早白垩世、晚白垩世、古近纪和新近纪四个时间阶段的具体演化过程和成矿作用,发现中、新生代是主要成矿期,其中最重要的是与白垩纪相关的成矿事件,新生代为砂金、盐湖矿形成阶段。     

浅析巴里坤县下石炭统黑山头组岩石特征及沉积环境

研究区处于东天山巴里坤一带,大地构造处于哈萨克斯坦-噶尔板块、准噶尔微板块,属于北疆-兴安底层分区、北疆地层区。研究区划分为北天山和准噶尔两个地层分区,准噶尔分区仅涉及三塘湖-莫钦乌拉小区,北天山则包含博格达小区和吐哈盆地小区。三塘湖-莫钦乌拉小区主要位于白墩子大断裂的东北部。博格达小区位于巴里坤塔格南缘断裂以北和白墩子大断裂南西夹持的区域。研究区主要由沉积岩、火山岩及少量变质岩组成。区内出露地层较多,早石炭世出露地层为黑山头组,山梁砾石组等。期内地层挤压强烈,褶皱和断裂构造发育。下石炭统黑山头组的总体沉积环境为滨浅海环境,本次调查通过大量的实测剖面和主干路线,确定该套地层岩石组合为一套正常沉积碎屑岩、火山碎屑沉积岩和火山岩,发现大量海相化石和芦木属的植物,推测当时水体变浅、水动力增强的的滨海环境。     

内蒙古新右旗额仁陶勒盖银矿磁异常特征及地质找矿分析

通过对矿区内地面高精度磁法测量进行数据处理与综合研究,查明了区内不同岩(矿)石磁性特征和不同地质单元对应的磁场特征。从磁法角度给出了矿区北西部岩体与地层的关系问题—岩体早白垩世早期-晚侏罗世侵入地层;进一步确定断裂构造是矿区内重要的控矿因素;明确了矿区中部的岩体侵入边部的断陷盆地破碎区具有成矿的良好的地质条件,对找矿有重要的指示意义,提出了下一步找矿方向。     

湖南衡阳柏坊铜矿床地质特征及成因分析

柏坊铜矿床为湖南省境内中新生代陆相红层盆地(衡阳盆地)内重要的铜矿床.矿区内矿体主要赋存于白垩系红色碎屑岩系浅色砂岩层、白垩系地层与石炭系地层不整合接触带、F22断裂破碎带及下伏的石炭系壶天群灰岩内.白垩系地层和断裂构造为矿床基本成矿地质条件.白垩系赋矿围岩微量元素含量(紫色砂岩中Cu元素含量为91×10~(-6);浅色砂岩中Cu元素含量为144×10~(-6))指示白垩系地层可能为矿床的形成提供了部分成矿物质.综合矿床宏观地质特征及成矿地质条件分析,认为柏坊铜矿为沉积-改造型铜矿床.     

内蒙古巴彦乌拉铀矿床地质特征

二连盆地巴彦乌拉铀矿床是一个可地浸砂岩型铀矿床,主要受层间氧化带控制。矿区地层自下而上由下白垩统赛汉组下段(K_1s~1)、赛汉组上段(K_1s~2)、古近系伊尔丁曼哈组(E_2y),第四系(Q)组成。该区地层岩浆岩石的成分是以二叠纪、侏罗纪中的中酸性侵入岩为主。区内矿产以煤为主。矿石主要是砂岩类矿石和砾岩类矿石组成,矿物成分为碎屑物、粘土矿物、有机碳、黄铁矿和碳酸盐组成。本论文主要对巴彦乌拉铀矿床的地质特征进行分析与探讨。     

西秦岭地区元古界地层的发现及其地质意义

在1:5万区域地质调查和科研成果的基础上,依据岩石组合,变形变质程度、形成年龄等,西秦岭北带吴家山岩群应为元古界地层,是西秦岭北带基底岩系,该认识对于研究西秦岭地区地壳的形成和演化具有重要意义。     

山东省牟平宋家沟金矿床地质特征

宋家沟金矿床位于山东省牟平 ,为胶莱盆地中发现的颇具工业规模的金矿床。含矿地层为下白垩统莱阳群下段砾岩 ,矿床由多个矿体组成 ,矿石为含金砾岩。含矿地层富金 (Au =10 0 .2× 10 - 9)。围岩矿石稀土总量 2 32 87× 10 - 6 ～ 352 2× 10 - 6 ,LREE/HREE =1.88～ 12 71,稀土元素分布模式相似、同步。含矿地层是矿源层 ,燕山晚期(110～ 12 5Ma)构造岩浆活动导致该矿床形成定位 ,该矿床为沉积改造层控矿床。南地口、大崮头是此类矿床的新的找矿地段     

海拉尔盆地贝尔凹陷贝西地区南屯组层序地层特征

应用沉积学和层序地层学的原理和方法,利用地震、钻井、岩心等资料,结合盆地区域构造演化特征,建立了海拉尔盆地贝尔凹陷贝西地区南屯组层序地层格架,将南屯组划分为1个超层序、4个三级层序、11个体系域.在层序格架内共识别出扇三角洲、辫状河三角洲、湖底扇、湖泊4种主要沉积相类型及8种亚相类型.南屯组沉积时期区内经历了初始沉降一快速沉降一沉降减弱一萎缩的构造演化过程,并形成与其对应的4个三级层序:SQ1沉积时期,研究区为分割的断陷盆地,湖盆规模较小,主要发育扇(辫状河)三角洲;SQ2沉积时期,湖盆规模迅速增大,统一的湖盆基本形成,沉积格局与SQ1时期相似·但有所不同的是区内西南缘出现物源供给,形成扇三角洲沉积;SQ3沉积时期,湖盆规模最大,区内各个物源方向的扇(辫状河)三角洲沉积规模明显减小,湖底扇及滑塌浊积体等重力流深水沉积相对发育;SQ4沉积时期,湖盆萎缩,湖盆规模迅速减小,同时东南部物源供给不足,造成东南部辫状河三角洲沉积几乎消失.生储盖组合及成藏条件综合分析表明:SQ2、SQ3低位体系域及高位体系域发育优质储层,并由于紧邻规模较大的烃源岩,在邻近断裂发育地区易形成断块圈闭及断背斜圈闭;在斜坡地区和缓坡带可形成不整合面作为遮挡的不整合-岩性圈闭及以各类砂体作为储集空间的地层超覆圈闭.     

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)     

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.     

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.     

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.