瑞士阿尔卑斯山冰川径流的一个模式

本文利用自回归复回归数学模型和传递函数对瑞士阿尔卑斯山兹姆特冰川流域的流量进行了模拟计算。根据冰川消融过程的差异,将进行统计年份的消融季节划分为三个随机样本。最好的预报因子是流量本身、气温和经气温加权后的降水量。反射率的变化在模式中起着重要作用,而太阳辐射和流量之间的相关关系较微弱。     

前寒武纪基底岩石的新证据

尼日利亚大部分锡石采自冲积及残积矿床。这些矿床中的锡石米白侏罗纪碱性环状杂岩体(为较年轻的花岗岩)中的黑云母花岗岩。而不到总产量5%的锡釆自前寒武基底杂岩中的伟晶岩。基底杂     

中国与美国矿产资源类比及预测

作者运用单位区域产值矿产评价方法,估计了中华人民共和国的矿物和能源资源.资源估计主要立足于中国与美国50个州的地质比较.估计结果表明,中华人民共和国主要金属矿产和能源资源蕴藏丰富.     

Association of orogenic activity with the Ordovician radiation of marine life

The Ordovician radiation of marine life was among the most substantial pulses of diversification in Earth history and coincided in time with a major increase in the global level of orogenic activity. To investigate a possible causal link between these two patterns, the geographic distributions of 6576 individual appearances of Ordovician vician genera around the world were evaluated with respect to their proximity to probable centers of orogeny (foreland basins). Results indicate that these genera, which belonged to an array of higher taxa that diversified in the Middle and Late Ordovician (trilobites, brachiopods, bivalves, gastropods, monoplacophorans), were far more diverse in, and adjacent to, foreland basins than they were in areas farther removed from orogenic activity (carbonate platforms). This suggests an association of orogeny with diversification at that time.     

CRUSTAL CONFIGURATION OF NW HIMALAYA: EVIDENCES FROM THE ISOSTATIC AND FLEXURAL ANALYSIS OF GRAVITY DATA

CRUSTAL CONFIGURATION OF NW HIMALAYA: EVIDENCES FROM THE ISOSTATIC AND FLEXURAL ANALYSIS OF GRAVITY DATA     

Segmentation of Foreland Belts and Relationship With Basement Deformation in the Southwest Tarim Basin

SEGMENTATION OF FORELAND BELTS AND RELATIONSHIP WITH BASEMENT DEFORMATION IN THE SOUTHWEST TARIM BASIN     

Evolution of Ore-Forming Fluids and Ag-Cu Polymetal Mineralization in the Lanping Basin, Yunnan

EVOLUTION OF ORE-FORMING FLUIDS AND Ag-Cu POLYMETAL MINERALIZATION IN THE LANPING BASIN, YUNNAN“KeyProjectforResourcesandEconomics” (95 0 2 0 0 1 0 1)oftheMinistryofLandResources     

叶尼塞山变质地层中的硫化物—石英金矿床

研究了变质地层中硫化物—石英金矿化的形成条件。金矿床和矿点产于多变质作用边界条件的岩石发育区中。在导致围岩和石英脉中大量矿物共生组合形成的不大距离上,具有流体状态和变质作用温压条件明显更替的挤压带,对于金矿床的形成来说是最有利的。研究了在千枚岩和结晶片岩中石英脉带形成的机理。在造岩矿物中金的广泛发育和明显的重新分配,证明在导致矿石富集的变质作用时元素高的活动性。