通二井田不同地质构造成分的定量分离

应用二维多项式趋势面分析方法分离出通二井田不同级别的构造成分,进而推断出研究区构造应力作用方式和方向。      

京九铁路沿线江西段地质旅游资源开发建议

江西是京九铁路沿线“资源最丰富,风景最秀丽”的区段,按地质成因,该区段沿线地质资源包括：地貌旅游资源,地质构造旅游资源,水体旅游资源,矿业旅游资源,形成了庐山,鄱阳湖,南昌,井冈山,赣州,三百山６个重点旅游区。本文在分析了沿线地质旅游资源现状,有利和不利因素的基础上提出加快“三山”（庐山,井冈山,三百山）“一线”（京九铁路沿线）地质旅游资源开发的６点建议。     

江西金山矿床地质特征及矿床成因探讨

金山金矿为赣东北地区－大型独立金矿床,其产出受金山顺层剪切控制,主要矿化类型有硅化岩及含金石英脉型两种,金的大量淀积晚于石英脉的形成。矿区岩,矿石稀土元素地球化学特征及铅,硫同位素分析表明,成矿物质主要来自元古界双桥山群浅变质地层,氢,氧同位素资料证明成矿溶液为变质水,成矿温度为２３０℃～４００℃矿床属剪刀带型中温变化变质诚因。     

Comparison of Internal Structures of Marine Manganese Deposits of Hydrogenetic, Diagenetic and Hydrothermal Origins

Abstract: Detailed microscopic observation, combined with X-ray diffraction and EPMA analyses of samples from marine manganese deposits of three different origins, suggests that characteristic internal structures are inherent in each manganse mineral; vernadite (δ–MnO₂), buserite (10Å–manganate) and todorokite (10Å–manganate).     

包裹体爆裂法测试中石英α-β峰的产生原因及找矿意义

石英在爆裂法测试中常出现α-β峰,此峰是由爆裂温度大于573℃的高温流体包裹体,在α石英相变成β石英时,包裹体发生泄漏（非爆裂）形成的.在金矿地质找矿中,用α-β峰可判断矿脉的剥蚀程度,推测矿床成因     

无机成因二氧化碳气的类型分布和成藏控制条件

从无机成因天然气成藏主控条件———气源断裂体系构造变形场的类型（收缩、伸展、走滑和旋转等）出发,综合分析了无机成因二氧化碳气藏的成因类型、分布规律和成藏控制条件等。结合实例对气源断裂体系结构作了剖析,指出二氧化碳气藏研究中值得重视的几个方面。     

An Overview Of The Origin Of Life: The Case For Biological Prospecting On Mars

Studies of the Earth's earliest biosphere have suggested a close coupling between the evolution of early life forms and the physical and chemical evolution of the planetary surface. From a biological perspective there were many similarities between early Earth and early Mars. This has led to the idea that an origin of life event may have occurred on Mars, leading to the development of microbial life. Various theories have been advanced to explain the origin of life on Earth, and these are reviewed with relevance to Mars. If traces of past or present biogenic activity are to be found on Mars, then the most likely place to prospect is several kilometers below the surface where liquid water might be stable. Such prospecting may best lend itself to human exploration. This revised version was published online in July 2006 with corrections to the Cover Date.     

Origin of hydrocarbon fluids and discussion of abnormal carbon isotopic compositions in the Lishui-Jiaojiang Sag,East China Sea Shelf Basin

The hydrocarbon gases in the L1 gas field of the Lishui-Jiaojiang Sag have been commonly interpreted to be an accumulation of pure sapropelic-type thermogenic gas. In this study, chemical components, stable isotopic compositions, and light hydrocarbons were utilized to shed light on the origins of the hydrocarbon fluids in the L1gas pool. The hydrocarbon fluids in the L1 gas pool are proposed to be a mixture of three unique components:mid-maturity oil from the middle Paleocene coastal marine Lin...     

Intersecting views of gully erosion in South Africa

Gully erosion is an environmental problem recognized as one of the worst land degradation processes worldwide. Insight into regional gully perturbations is required to combat the serious on- and off-site impacts of gullying on a catchment management scale. In response, we intersect different perspectives on gully erosion-specific views in South Africa (SA), a country that exhibits various physiographic properties and spans 1.22 million km². While the debate surrounding gully origin continues, there is consensus that anthropogenic activities are a major contemporary driver. The anthropogenic impact caused gullying to transcend climatic, geomorphic, and land-use boundaries, although it becomes more prominent in central to eastern SA. Soil erodibility plays a crucial role in what extent of gully erosion severity is attained from human impact, contributing to the east–west imbalance of erosion in SA. Soil erosion rates from gullying and badlands are limited but suggest that it ranges between 30 and 123 t ha⁻¹ yr⁻¹ in the more prominent areas. These soil loss rates are comparable to global rates where gullying is concerned; moreover, they are up to four orders of magnitude higher than the estimated baseline erosion rate. On a national scale, the complexity of gullying is evident from the different temporal timings of (re)activation or stabilizing and different evolution rates. Continued efforts are required to understand the intricate interplay of human activities, climate, and preconditions determining soil erodibility. In SA, more medium- to long-term studies are required to understand better how changing control factors affect gully evolution. More research is needed to implement and appraise mitigation measures, especially using indigenous knowledge. Establishing (semi)-automated mapping procedures would aid in gully monitoring and assessing the effectiveness of implemented mitigation measures. More urgently, the expected changes in climate and land-use necessitate further research on how environmental change affects short-term gully erosion dynamics.     

广东大亚湾海域潜在的地质灾害类型及其分布规律

根据大量地质一地球物理实测资料,分析了大亚湾海底潜在地质灾害因素,特别是基底断层、沙波、浅埋基岩、陡坎、异常堆积区等与海洋工程关系密切的地质灾害的类型、分布特征、形成机制及危害性,为海洋开发与海底工程设计提供科学依据。