青海沱沱河地区遥感蚀变信息提取

陈建平; 王倩; 董庆吉; 丛源

青海沱沱河地区遥感蚀变信息提取

陈建平^{1, 2,},
王倩^{1, 2},
董庆吉^{1, 2},
丛源^{1, 2}

1.
中国地质大学国土资源与高新技术研究中心, 北京 100083
2.
北京市国土资源信息开发研究重点实验室, 北京 100083

基金项目:

“十一五”国家科技支撑计划项目子课题 2006BAB01A08

详细信息

作者简介:
陈建平(1959-), 男, 博士, 教授, 博士生导师, 主要从事矿产资源预测与评价研究.E-mail: 3s@cugb.edu.cn

中图分类号: P627
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- 被引次数: 0
出版历程
- 收稿日期: 2008-12-22
- 刊出日期: 2009-03-25

Extraction of Remote Sensing Alteration Information in Tuotuohe, Qinghai Province

CHEN Jian-ping^{1, 2
,},
WANG Qian^{1, 2},
DONG Qing-ji^{1, 2},
CONG Yuan^{1, 2}

1.
Institute of Land Resources and High Techniques, China University of Geosciences, Beijing 100083, China
2.
Beijing Key Laboratory of Research and E xploration Information of Land Resources, China University of Geosciences, Beijing 100083, China

摘要

摘要:
青海沱沱河位于西南“三江”成矿带的西北端, 具有优越的成矿地质背景和巨大成矿潜力, 已发现一批大中型以上规模的铅、锌、银、铜找矿靶区.沱沱河地区属于高寒区, 野外地质工作难于开展, 因此在该地区开展遥感找矿的研究是一种经济、便捷、有效的勘查手段.在ENVI软件的支持下, 根据与蚀变矿物组合相关的波谱特征, 利用掩膜+主成分分析+色度调整(MPH) 的方法从TM多光谱影像中提取与金属矿化有关的铁染与羟基蚀变遥感信息异常, 并结合地质资料, 区划成矿远景区和圈定找矿靶区, 取得了很好的应用效果.
- MPH /
- 主成分分析 /
- 铁染蚀变 /
- 羟基蚀变 /
- 沱沱河
Abstract:
Tuotuohe is located at the north-west section of "Sanjiang" metallogenic belt, Qinghai Province.This area boasts favorable mineralization background and great ore mineral potential.Prospecting targets for large-and/or middle-sized lead, zinc, sliver, and copper deposits have been delineated.Tuotuohe area belongs to cold grassy highland where some of the traditional geological field survey and mapping are difficult to conduct.Remote sensing technology is expected to provide low cost and efficient means to facilitate mineral exploration.Based on the spectrum information of mineral associations involved in mineralization-associated alteration zones and with the support of ENVI software, the authors used an integrated masking-principal component analysis-histogram classification (MPH) method to process the TM multi-spectral image to extract patterns related to iron stained alteration and hydroxyl alteration of mineralization form.Geological data are integrated with the results of remote sensing image processing to divide prospective districts and delineate prospecting targets.
- MPH /
- main component analysis /
- iron stained alteration /
- hydroxyl alteration /
- Tuotuohe

HTML全文

图 1 沱沱河地区遥感影像地质图

Fig. 1. Geological map of remote sensing image in Tuotuohe area

下载: 全尺寸图片幻灯片

图 2 沱沱河地区铁染蚀变异常分布

Fig. 2. Distribution of iron stained alteration anomaly in Tuotuohe area

下载: 全尺寸图片幻灯片

图 3 沱沱河地区羟基蚀变异常分布

Fig. 3. Distribution of hydroxyl alteration anomaly in Tuotuohe area

下载: 全尺寸图片幻灯片

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