湖南省韧性剪切系统基本特征

河南省的地壳结构是不均一的。它的基本特征是以雪峰弧形韧性剪切带和其它几条NE、NW向的韧性剪切带与菱形弱应变区有规律的组合。这些大型韧性剪切带都是不同尺度的构造边界，对它们的深入研究有助于省内某些重大基础地质问题的解决。 通过对雪峰弧形和永州－株洲NE向韧性剪切带较详细的研究，指出在中浅变质岩区，强直面理化带是韧性剪切带的基本特征之一。     

湖南省矿产资源形势与发展战略问题探讨

湖南省矿产资源比较丰富，有色金属及非金属矿产具有明显优势，但矿产资源形势严峻，保有储量不足，难选治、低品位、共伴生矿多，开发利用难度大，地勘体制改革滞后。矿产资源自给能力明显下降，且矿山数量多、规模小、利用效率低、深加工落后、矿山环境问题严重。应从建立多元化的矿产资源供应体系、调整能源结构、开展科技攻关、改善矿业开发的生态环境等方面实施一系列战略转变，采取建立矿产资源规划体系、建立矿产勘查基金、改善矿业投资环境、提高矿山地质环境保护水平等政策措施，实现湖南矿业的可持续发展。     

物探方法在湘南两个多金属矿区的找矿效果

郴州白腊水锡铅锌矿区，受断裂控制的锡矿体与花网岩存在的磁性差异，应用高精度磁测较好地圈定了矿脉（带）、找到了新矿脉，汝城清江铅锌矿区应用磁法、电法及化探等综合方法，对矿区远景进行了评价，亦找到了新的可供开采的工业矿体。     

Numerical modeling of the formation of Indo-Sinian peraluminous granitoids in Hunan Province: Basaltic underplating versus tectonic thickening

The genesis of Indo-Sinian granitic plutons with peraluminous and potassium-rich affini-ties from Hunan Province, China has been investigated by numerical modeling using the numericalcode FLAC. On the basis of the regional geological evolution in South China, we employed a real-istic numerical model in an attempt to unravel the influences of basaltic underplating and tectoniccrustal thickening on the crustal anatexis. Heat production derived from basaltic underplating (e.g.ca. 220 Ma gabbro xenoliths) can result in dehydration melting of fluid-bearing minerals in crustalrocks such as gneisses and metapelites, but its effect is limited in a relatively short time span (5-15 Ma) and on a small scale, Accordingly, it is very difficult for basaltic underplating to generate thelarge-scale Indo-Sinian granitic bathliths unless voluminous mafic magmas had been underplatedat the lower/middle crust during this period. Alternatively, crustal thickening induced by tectoniccompression can also lead to geothermal elevation, during which the temperature at the boundarybetween lower and middle crusts can be up to or greater than 700℃, triggering dehydration melt-ing of muscovite in gneiss and metapelite. The proportion of melts from muscovite-induced dehy-dration melting is close to critical melt percentage (≥20%) once the thickening factor reaches 1.3.These melts can be effectively transferred to the crust-level magma chamber and form large-scalegranitic batholiths. In combination with the Indo-Sinian convergent tectonic setting in South Chinaas well as sparse outcrops of contemporary mafic igneous rocks, we consider that tectonic crustalthickening is likely to be the predominant factor controlling the formation of the Indo-Sinian per-aluminous and potassium-rich granitoids in Hunan Province.     

湘桂地区中新生代走滑断裂系统对铀成矿的控制作用

湘桂地区是我国的重要铀成矿区之一。该区自中生代末期以来进入了全新的陆内走滑作用阶段,并经历了两次重大的构造转换,即晚三叠纪末至侏罗纪末的会聚走滑和白垩纪至第三纪早期的离散走滑。三条NNE向的主走滑断裂(PDZ)和一系列NE向的同向右侧列走滑断层(P)以及NW向的反向走滑断层(R')组成了复杂的走滑断裂网络系统,并直接控制了湘桂地区铀矿床(田)在时间和空间上的分布。     

"狗头金”的再生特征及成因--以湖南益阳南郊7号"狗头金”为例

湖南益阳南郊7号“狗头金”的金源主要来自古火山岩及其边部冷家溪群板岩中的含金矿脉与基性火山碎屑岩系，属近原甚至近于就地的沉积再生成因。该“狗头金”表现不但显示再生痕迹，而且蜂窝状洞穴中的粘土还有微细金相伴，其杂质组分与本区含金矿石的标型元素Cr、Ag、Cu相对应。     

GEOCHEMISTRY OF BASALT AND XENOLITHS AND ITS DEEP PROCESS IN DAOXIAN COUNTY,HUNAN PROVINCE

Deep xenolith are important samples for us to know composition and nature of the deep crust.There are many new volcanos which can all kinds of xenoliths such as a lower crustal graulite,and upper mantle-derived peridolite and lherzolite.In eastern China,there occured many deep xenoliths in Mesozoic-Cenzoic alkaline basalt.Besides these,some small volcanos eruptions were founded in southern Hunan province,which age is about 132-151 Ma.     

湖南早震旦世沉积建造浊流沉积及锰矿成因

主要从沉积建造角度讨论了各种不同构造古地理、古生物、古环境、地球化学及同位素地质，对早震旦世锰矿成矿的控制。并且把湖南早震旦世地层划分出五个沉积建造系列；恢复了湖南省早震旦世大地构造－沉积建造理想剖面，另一方面，对早震旦世地层的形成，提出了＂浊流成因＂的新认识，初步阐述了浊流产生的动力条件。最后提出了＂多源、生物－浊流沉积成矿模式＂。     

试论湖南境内喀斯特洞穴发育及成矿特征

指出湖南境内喀斯特洞穴，因大地构造发展的差异，使洞穴发展不平衡。据洞穴发育时代，分为六个成洞期，并对地洼区洞穴形态，成洞条件，洞穴类型等做了论述。同时对地洼洞穴矿床特征，成矿机理，矿床分类及洞穴矿床演化规律进行了探讨，指出地洼区洞穴发育及洞穴成矿的研究意义。     

湘南上二叠统长兴组生物礁基本特征

湘南生物礁发育于上二叠统长兴组。该礁体的岩石组合类型有:骨架岩、障积岩、粘结岩等。组成礁体的生物极为丰富,类型繁多。造架生物有:串管海绵、纤维海绵、Tabulozoan、水螅类、四射珊瑚等。粘结生物有:Archaeolithoporella、Tubiphytes、Tabulozoan及蓝绿藻。附礁生物有:腕足类、有孔虫等。礁体发育大致可以分为四个阶段:萌芽期、发育期、繁盛期和衰亡期。从礁体的发育关系来看,具有海侵过程中向岸推移的趋势。