Genetic relation between Carlin-type gold deposits and Sedex-type base metal mineralization

来源 :Chinese Science Bulletin | 被引量 : 0次 | 上传用户:Gempin
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
GOLD mineralization and Sedex-type base metal mineralization (SBM) have been separately studied for along period. This may lead geologists to ignore the important exploration meaning of SBM in goldprospecting. A typical example is related to the Carlin-type gold ore deposits, in the study of which, Hg,As, Sb and other mineralizations have been stressed but SBM has been ignored. 1 A new phenomenon In recent years, it has been discovered that many Carlin-type gold ores and SBM are distributed inthe same geology unit but are disjunctive each other. In Carlin district of USA, Emsbo et al.have reported the Sedex-type Pb-Zn orebody in thedepth of Meikle Au deposit, the same phenomenon has been described in Screamer, Golden April, Rodeo This may lead geologists to ignore the important exploration meaning of SBM in gold prospecting. A typical example is related to the Carlin-type gold ore deposits, in the study of which, Hg, As, Sb and other mineralizations have been stressed but SBM has been ignored. 1 A new phenomenon In recent years, it has been discovered that many Carlin-type gold ores and SBM are distributed inthe same geology unit but In Carlin district of USA, Emsbo et al. have reported the Sedex-type Pb-Zn orebody in thedepth of Meikle Au deposit, the same phenomenon has been described in Screamer, Golden April, Rodeo
其他文献
“否定”是一个范围广泛的概念。通常把包含否定词的句子称为否定句,但否定形式不一定表示否定意思,肯定形式亦不一定表示肯定的意思。本文旨在讨论暗含否定结构,即:肯定句中
巨细胞病毒(CMV)是我国小儿致畸致残的重要病原之一,其发生与CMV感染的时期和病型等有关,本文对31例症状性和36例亚临床性CMV感染患儿分组比较先天畸形和智能、体格.听力发育
The sliding friction of various kinds of hydrogels has been studied and it was found that the frictional behaviors ofthe hydrogels do not conform to Amonton’s
应用文,以实务为目的,尚实,不尚虚;尚简,不尚繁。要而言之,无非“事、理、格、简、明、快”六个字。写作应用文,首先要把事情、事件、事由交代明白;要把提出事情、事件、事由
中国科学院长春应用化学研究所(以下简称长春应化所)历经50年的建设与发展,目前已形成包括无机、分析、有机、物化、高分子化学与物理5个博士学位授权点所覆盖的整个化学一级
利用Na2SO4作为熔盐,ZnCl2、MnCO3和Na2SiO3.9H2O作为原材料,在900~1050℃间成功地合成了绿光发射的Zn2SiO4∶Mn荧光粉。当监测波长为524nm时,样品激发谱出现峰值位于254nm和2
为了实现对天然气资源量的定量模拟,提出“聚气系统”的概念,并利用盆地模拟技术建立了聚气系统天然气资源量动态模拟模型.聚气系统是包含一个聚气区和若干与其相关供气区的天然
小儿腹膜后恶性副神经节瘤一例报告王伟,张自顺患者,男,14岁。腹部肿块半年余,加重两周。肿瘤缓慢长大,于剧烈活动后感腰痛、腰酸,程度较轻,休息后能自行缓解。查体:中下腹膨隆,可触及一
目的 通过CT增强扫描研究脑转移瘤的CT表现特征 ,为临床提供治疗依据。方法  136例脑转移瘤患者 ,扫描采用层厚、层距各 10mm ,必要时加薄用 3mm或 5mm。单纯平扫 8例 ,平
为了估算几个物理因素对动态裂纹稳定性的影响,进行了一系列分子动力学模拟。这些因素是由各种实验潜势模拟得到的晶体结构和原子间的相互作用。对于低温下脆性裂纹的扩展,我