Gold Minerogenetic Prognosis Using Satellite Data:Case Study of Paishanlou Gold Mine, Liaoning Provi

来源 :Journal of China University of Geosciences | 被引量 : 0次 | 上传用户:sukey2
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
The major scientific goal of using satellite data for mineral prospecting in the study area was two-fold: (a) mapping geology, faults and fractures that localize ore deposits; (b) recognizing hydrothermally altered rocks by interpreting their spectral signatures. The lithology, properties, and geological relations of the rocks were key to understanding such varied phenomena as convection, melting and transport mechanisms, rock deformation and alteration, the sources of magnetic anomalies, and the hydrothermal circulation and formation of gold deposits. Satellite data were enhanced using the following techniques: band combinations, ratios, directional sharpening filtering, Laplacian transform, spatial convolution, and density slicing. By mapping a larger area, the Paishanlou Gold Mine was discovered to be located within an accommodation zone, with three significant populations of faults having bearings of 95, 145, and 180 degrees. Faults bearing 145 degrees make up the faults of the main shear zone. The faults bearing 180 degrees have large sinistral offsets, typically 1.5 km, and form a synthetic-antithetic set with the faults bearing 145 degrees, which have dextral displacements of tens of meters. In the Landsat ETM+ image composed of bands 7-4-2 RGB, gneiss rocks were clearly seen as red purple, and granitic and plagioclase bodies in pale brown/pink. The strongest alteration signature in the image was found along the detachment fault antiform located closest to the mine and the plutons responsible for the Paishanlou gold mineralization. Satellite image interpretation coupled with field surveys led to the identification of iron mineral composites, hydrothermally altered areas, fractures, and an accommodation zone. These anomalies finally resulted in the discovery of three new gold-mineralized sites. The major scientific goal of using satellite data for mineral prospecting in the study area was two-fold: (a) mapping geology, faults and fractures that localize ore deposits; (b) recognizing hydrothermally altered rocks by interpreting their spectral signatures. The lithology, properties, and geological relations of the rocks were key to understanding such varied phenomena as convection, melting and transport mechanisms, rock deformation and alteration, the sources of magnetic anomalies, and the hydrothermal circulation and formation of gold deposits. Satellite data were enhanced using the Following techniques: band combinations, ratios, directional sharpening filtering, Laplacian transform, spatial convolution, and density slicing. By mapping a larger area, the Paishanlou Gold Mine was discovered to be located within an accommodation zone, with three significant populations of faults with bearings of 95, 145, and 180 degrees. Faults bearing 145 degrees make up the faults of the mai The faults bearing 180 degrees have large sinistral offsets, typically 1.5 km, and form a synthetic-antithetic set with the faults bearing 145 degrees, which have dextral displacements of tens of meters. In the Landsat ETM + image composed of bands 7 -4-2 RGB, gneiss rocks were clearly seen as red purple, and granitic and plagioclase bodies in pale brown / pink. The strongest alteration signature in the image was found along the detachment fault antiform located closest to the mine and the plutons responsible for the Paishanlou gold mineralization. Satellite image interpretation coupled with field surveys led to the identification of iron mineral composites, hydrothermally altered areas, fractures, and an accommodation zone. These anomalies finally resulted in the discovery of three new gold-mineralized sites.
其他文献
广东一农民因长期受蟑螂侵扰,自己发明了“灭蟑笔”。这位老兄一不认识记者,二没钱做广告。于是,逼急了,他来到广州的一家大报社,进了编辑部的门,他把带来的一个大信封撕开,一群蟑螂
文章根据中职院校的教学现状,对汽修专业实训教学进行分析与讨论,从学校实训基地和实训教学方面进行分析,阐述了实训教学“8S”管理的含义、内容,提出了实训管理中实施“8S”
面对社会对环境艺术设计专业人才越来越严格的要求,行业高素质人才越来越激烈的竞争,社会对环境艺术设计专业创业型人才需求的增加,我们的高校教育有必要加大对环境艺术设计
随着信息技术的发展,计算机在社会各领域中得到广泛应用,在推动社会发展中占据重要地位。基于这一背景,计算机应用基础课程受到社会各界的关注,其以计算机的使用方法为基本内
新时代对高职学生的素质要求越来越高,创新能力在人才培养和市场竞争中的作用越来越明显。因此本文结合服装设计课程,探讨如何在高职院校的专业课程中进行课程改革和探索,以
由于课程教学这属于高职教学当中一个必不可少的重要环节,创新发展课程教学这是高职院校做好教学改革的一个重点课题。本文以笔者所在的九江职业大学旅游管理专业为例,通过对
随着当前科学技术迅猛发展,机械制造业不断向着机械化和自动化等方面快速发展,数控专业在现代中职教育中占有很大比重,并不断成为该行业的主导专业之一。因此传统中职教学中
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
课程改革,实训课,如何提高学生的学习兴趣。  【关键词】课程改革;为了学生的发展  “课程改革是大趋势,学习方式和教学方式的转变是必须的,从围着老师转,到围着学生转。这就是我们需要探讨的。  1 教学方法改进  学生的学习成绩,与教师的教学方法是否得当有着明显的关系。以目前职校生的现状来看,一般学习积极性都非常低迷,那么如何调整他们的学习心态就是至关重要的一项任务。我们针对机械专业,这一专业性很强
In this work, the distribution of organic carbon, DNA and lipids in the sediments of Hongfeng Reservoir were described in addition to SO42? profile in pore wate