龙门山造山带岩石圈演化的动力学模式

在对龙门山的构造变形、沉积环境、地层古生物、石油地质、遥感地质、地球物理、同位素地质等专题研究基础上,综合归纳出龙门山造山带岩石圈演化的动力学模式——为多层次、乡阶段、深层破裂控制浅层变形的陆内俯冲模式。它不同于A型俯冲带模式,也不同于阿尔卑斯碰撞型造山模式,而是具有中国特色的C型(中国型)俯冲造山模式。     

Geochronology of source materials from high-pressure and ultrahigh-pressure metamorphic rocks in Jurassic sedimentary rocks of Hefei Basin

Eclogite cobbles were discovered by Wang et al. (2001) in the Fenghuangtai Formation of the northern margin of Dabie Mountains in the Dushan area of Anhui Province, China[1]. They proposed that after the formation during the Triassic, the high-pressure (HP) and ultra-high-pressure (UHP) metamorphic rocks reached the sur-face through exhumation and uplifting before the late Ju-rassic. However, they have not provided any evidence about isotopic ages. One kind of cobbles of HP-UHP rocks w…     

塔里木盆地变形构造格局及其动力学模式——兼论楔入造山推覆成盆作用

通过对塔里木沉积盆地及周缘造山带的构造研究，重点讨论了陆内前陆盆地基底性质、变形构造样式、沉积盆地与周围造山带的几何结构特征，提出沉积盆地及盆山耦合关系的楔入造山推覆成盆作用的大陆变形动力学模式     

First SHRIMP zircon U-Pb ages for Hutuo Group in Wutaishan： Further evidence for Palaeoproterozoic amalgamation of North China Craton

A felsic tuffaceous rock, obtained from a metamorphosed sequence of volcanics and sediments of the Hutuo Group, 8 km south of Taihuai in Wutaishan, contains two zircon populations. These record SHRIMP 207Pb/206Pb weighted mean ages of 2180±5 Ma and 2087±9 Ma, respectively. The older date is within error of the age of the Dawaliang Granite in Wutaishan and is considered to be     

华北克拉通西北部早元古代逆冲构造及其意义

华北克拉通西北部发育一系列早元古代的逆冲构造，它们在岩石组成、构造样式、产状、运动方式和时代等方面的特征具有明显的一致性，表明该地区在早元古代经历了一次强烈的造山作用．这次造山作用使华北克拉通西北部形成．     

中国矽卡岩型金矿的成矿时间、空间、地球动力学背景和成矿模式

矽卡岩型金矿床是我国最主要的金矿类型之一,目前已确定至少14个矿床为大型,24个为中型,占我国黄金总储量的15%。中国矽卡岩型金矿床的成矿时间与其所在地区最晚的碰撞造山作用时间吻合,就位于碰撞造山作用的晚期;中国矽卡岩型金矿床分布在碰撞造山带、断裂岩浆带和陆缘活动带,它们都经历了强烈的显生宙碰撞造山作用;成矿地球动力学背景为碰撞造山作用的挤压-伸展转变期。无论是中国矽卡岩型金矿床的地质地球化学特征,还是含矿岩体的地质地球化学特征,都与碰撞造山成矿模式完全吻合,证明碰撞造山成矿模式是中国绝大多数矽卡岩型金矿床的成矿模式。     

Progress and records in the study of endogenetic mineralization during collisional orogenesis

To develop and perfect the theory of plate tectonics and regional metallogeny, metallogenesis during collisional orogenesis should be thoroughly studied and will attract increasing attention of more and more scientists. This paper presents the main aspects of research and discussions on metallogenesis during collisional orogenesis after the development of plate tectonics, and accordingly divides the study history into two stages, i.e. the junior stage during 1971–1990 and the senior stage after 1990. Beginning with the negation of mineralization in the collision regime by Guild (1971), the focus of study was put on whether there occurred any mineralization during collisional orogenesis at the junior stage. At the senior stage, which is initiated by the advance of metallogenic and petrogenic model for collisional orogenesis, scientists begin to pay their attention to the geodynamic mechanism of metallogenesis, spatial and temporal distribution of ore deposits, ore-forming fluidization, relationship between petrogenesis and mineralization in collisional orogenesis, etc. Abundance of typical collisional orogens such as Himalayan, China has best natural conditions to study collisional metallogenesis. Great progress in the study of metallogenesis during collisional orogenesis has been made by Chinese geologists. Therefore, we hope that the’ Chinese geologists and Chinese governments at various levels to pay more attention to the study of collisional metallogenesis. Some urgent problems are suggested to be solved so as to bring about breakthroughs in the aspects concerned.     

喜马拉雅碰撞造山作用与(超)大型矿集区的形成:科学问题与思考

青藏高原及邻区是中国唯一的一块具有世界规模级的成矿富集区 ,迄今所发现的大型、超大型矿床 /矿集区 ,在时间抑或空间上均与喜马拉雅碰撞造山作用有着密切的联系 ,反映了与喜马拉雅碰撞造山作用过程相伴随的青藏高原周边及内部岩石圈薄弱地带的壳幔置换过程、层圈交换作用、流体活动及其地球化学分馏过程 ,是控制大型、超大型矿床 /矿集区形成的主要因素。青藏高原成矿大陆动力学研究是阐明该区矿产资源分布规律和进一步发现大型、超大型矿床 (矿集区 )的科学基础