山东临朐铁寨金矿区地球化学特征   总被引：1，自引：1，他引：0  

周斌  仲崇学 《世界地质》2000,19(2):160-166

通过对铁寨金矿区各类岩石、矿石、成矿作用及矿体的地球化学特征的研究,提出了该矿区的原生地球化学找矿模式,即该区岩浆岩、沉积岩、蚀变岩及成矿作用的地球化学标志和矿体原生晕的分带性标志.  相似文献   

广西丹池锡多金属成矿带的带状分布及演化模型   总被引：1，自引：0，他引：1  

黄民智  原森民 《现代地质》1995,9(4):488-494

摘要：详细论述了丹池地区热变质岩、矿床类型、矿物组合及相应的硫、铅、碳、氧、氢稳定同位素和成矿物理化学环境的分带性和演化特征,指出矿带的形成在时间和成因上与燕山晚期地壳重熔型含锡花岗岩有着密切的关系,它们共同构成了该区构造一岩浆成矿演化的统一整体,建立了丹池锡多金属成矿带的分带演化模型。  相似文献   

http://www.sciencedirect.com/science/article/pii/S1674987111000223     

Chongwen Yu 《地学前缘(英文版)》2011,2(2):147-156

By applying the ‘theory of synchronization’ from the science of complexity to studying the regional regularity of ore formation within the Nanling region of southern China, a characteristic targetpattern regional ore zonality has been discovered. During the early and late Yanshanian epoch (corresponding respectively to the Jurassic and Cretaceous periods), two centers of ore formation emerged successively in the Nanling region; the former is mainly for rare metals (W, Sn,Mo, Bi, Nb) and one rare-earth element (La) and was generated in the Jurassic period; whereas the latter is mainly for base metals (Cu, Pb, Zn, Sb, Hg), noble metals (Au, Ag), and one radioactive element (U) and was generated in the Cretaceous period. Centers of ore formation were brought about by interface dynamics respectively at the Qitianling and Jiuyishan districts in southernHunan province. The characteristic giant nonlinear target-pattern regional ore zonality was generated by spatio-temporal synchronization process of the Nanling complex metallogenic system. It induced the collective dynamics and cooperative behavior of the system and displayed the configuration of the regional ore zonality. Then dynamical clustering transformed the configuration into rudimentary ordered coherent structures. Phase dynamics eventually defined the spatio-temporal structures of the target-pattern regional ore zonality and determined their localization and distribution. A new methodology for revealing regional ore zonality is developed, which will encourage further investigation of the formation of deep-seated ore resources and the onset of large-scale mineralization.  相似文献   

The characteristic target-pattern regional ore zonality of the Nanling region,China(Ⅰ)     

Chongwen Yu School of the Earth Sciences  Resources  China University of Geosciences  Beijing  China 《地学前缘(英文版)》2011,(2)

By applying the 'theory of synchronization' from the science of complexity to studying the regional regularity of ore formation within the Nanling region of southern China,a characteristic target-pattern regional ore zonality has been discovered.During the early and late Yanshanian epoch(corresponding respectively to the Jurassic and Cretaceous periods),two centers of ore formation emerged successively in the Nanling region;the former is mainly for rare metals(W,Sn.Mo.Bi,Nb) and one rare-earth element(La...  相似文献   

从森林植被特点看广东海岛自然地带属性     

邓义 《热带地理》1996,16(2):152-159

本文通过对广东省海岛森林植被的特点与性质的分析，论证了广东省海岛的自然地带属性问题。  相似文献   

ZONALITY OF DISTRIBUTION OF PHYSICO-GEOGRAPHICAL ZONES IN CHINA     

蒋忠信 《中国地理科学(英文版)》1993,3(4):308-325

With the methods of regression analysis and trend surface analysis, taking the bottom and top lines of dark conifer forest, bottom line of permafrost and the snowline of the latest glaciation in China as examples, this paper discusses the zonality regulaties of the distribution of physico-geographical zones in China. (1) Latitude zonality obeys the mathematical model of normal frequency distribution, being approximate to descending straightly within the latitude of China. (2) Longitude zonality shows that the elevation of physico-geographical zone rises straightly with the distance to east coast. (3) The combination of latitude and longitude zonalities appears a plane inclining from SSW to NNE. The decline of physico-geographical zone resembles a semiellipse- sphere inclining from the Qinghai-Xizang (Tibet) Plateau to northeast China, reflecting the effect of relief. (5) Physico-geographical zonation depends on the combination of hydrothermal conditions. Thus the factors influencing the distribution reg  相似文献   

胶东邓格庄金矿深部地球化学及预测   总被引：6，自引：4，他引：6       下载免费PDF全文

张连昌  王家法等 《地质与勘探》2001,37(1):27-29,37

通过对胶东邓格庄金矿深部（－225m～-345m)进行地球化学原生晕研究，结果表明Ⅰ2号脉的原生晕具有正向分带的特征，Ⅱ号脉的原生晕呈反向分带。据此推测在－345m以下地段Ⅰ2号矿体延伸不大，而Ⅱ号脉在－345m以下地段还有盲矿体的叠加。  相似文献   

确定地球化学异常水平分带序列方法的研究     

朴寿成  连长云  王丽华 《物探与化探》1997,21(3):168-171

通常利用异常规模或线金属量衬度确定地球化学异常水平分带序列,由此得出的序列,主要反映不同指示元素异常强度的大小,并非是异常中心在空间上的有序排列,因此不完全反映元素的相对活动性。应用重心法计算的水平分带序列,不仅反映成矿成晕作用下不同指示元素的异常中心相对于矿化中心的空间变化规律,而且也能够有效地刻划成矿成晕过程中元素的相对活动性。重心法的数学意义和地球化学意义明确,同时适用于垂直分带序列的计算。  相似文献   

水岩体系Eh-pH法及其在砂岩型铀矿体定位研究中的应用——以新疆伊犁盆地512铀矿床为例   总被引：5，自引：0，他引：5  

张卫民  刘金辉  孙占学  韦红钢 《华东地质学院学报》2002,25(2):91-96,112

512铀矿床不同氧化还原环境水岩体系Eh和pH值的研究结果表明：同一氧化还原环境的水岩体系Eh平均值极为接近；不同氧化还原环境的水岩体系Eh值差异明显，即从氧化带到还原带，水岩体系Eh值明显下降；不同氧化还原环境，其水岩体系pH值也有所不同，氧化带和还原带处于弱碱性介质环境，过渡带（矿化地段）处于中性介质环境；水岩体系Eh和pH值可以作为划分含矿层氧化还原环境分带及圈定铀矿体位置的依据。  相似文献   

甘宁蒙陕退耕还林(草)中的适地适树问题   总被引：7，自引：2，他引：5  

张景光  王新平 《中国沙漠》2002,22(5):489-494

通过对退耕还林工程中适地适树问题的探讨,我们认为在退耕还林(草)工程实施过程中一定要坚持适地适树,适地适树是造林中的一项基本原则。在退耕还林和造林过程中应该遵循生物气候带原则,演替前期植物种与演替后期植物种搭配,浅根系植物与深根系植物合理配置。植物种的选择应该坚持立地条件与生物学特性和生态学特性相适应;与地带性特点相适应;与降水条件和土壤水分条件相适应,做到"林水平衡";与植物群落的演替特征相适应。  相似文献