The freeze-thaw metallogenic model of regenerated gold placers under cold low temperature conditions

来源 :Chinese Science Bulletin | 被引量 : 0次 | 上传用户:bold_gm
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
LOCATED in the mined-out areas of primary gold placers, the regenerated gold placers in permafrost zonesare a kind of special low temperature deposit formed under modem cold climate conditions. Although theregeneration phenomenon was first discovered in South America, the scale and periodicity of the regeneration are more evident in permafrost environment of Northern Hemisphere. LOCATED in the mined-out areas of primary gold placers, the regenerated gold placers in permafrost zones, a kind of special low temperature deposit formed under modem cold climate conditions. Although there was phenomenon was first discovered in South America, the scale and periodicity of the regeneration are more evident in permafrost environment of Northern Hemisphere.
其他文献
地震灾害是使人们极易造成恐慌的突发性事件,防震减灾宣传是一个十分敏感的社会问题。在过去相当长的一段时间内,由于一些领导存在着求稳怕乱的思想,害怕防震减灾宣传尺度掌握不
这次张艺谋只取严歌苓的小说《陆犯焉识》的后几十页,拍摄电影《归来》。说实话,令我很欣喜的是他没有像《山楂树》、《金陵十三钗》拍摄时那样,从选角开始,一路炒作到电影上
1人生观方面一个人最大的不幸,莫过于当祖国或集体需要你的时候,你却无能为力。一切正直的中国知识分子都把自己的理想和希望寄托于伟大祖国的富强昌盛。尽管目前在工作和生活
MINERALS,rocks and fossils are the major objects in the dating laboratory with thermolumi-nescence(TL),optical luminescence(OL)or electron spin resonance(ESR)t
As verified by the data of fluid inclusions in minerals in some paleo-hydrothermal systems, a lowering intemperature of the ore-forming fluids and a decrease in
MacroseismicformulafordetermininghypocentraldepthanditsprecisecalculativemethodXINGBEIDUAN(段星北)4EntrancetoNo.110ofBuilding... MacroseismicformulafordetermininghypocentraldepthanditsprecisecalculativemethodXINGBIDIDUAN (Duan Xing North) 4EntrancetoNo
第l期(总65期)杭州湾海底淡水含水层开发前景初探·········…… ···············……张藻陆志坚严礼川(l)上海地区地震放大效应的初步探讨····
AsourceextentanalysisoftheLancangearthquake(Ms=7.6)of1988SI-HUAZHENG(郑斯华)JIANYANG(杨健)CenterforAnalysisandprediction,ChinaSeis... AsourceextentanalysisoftheLancangearthquake (Ms = 7.6) of1988SI-HUAZHENG (Jian-Hua) JIANYANG (Yang Jian) ​​CenterforAnalysisa
期刊
王成康,四川省级非物质文化遗产资阳河川剧艺术代表性传承人,川剧艺术大师萧楷臣、康子林的关门弟子。青年时以《八阵图》成名,可将24个凤点头连绵一气,一气呵成。年轻时的王
THE wildly horizontal and vertical chemical heterogeneties, which result from the inchoate core-mantledifferentiation of the globe and the spatio-temporal diff