新疆阿巴宫铅锌矿遥感找矿信息提取及地化多元信息综合分析

Ore-Search Information Extraction From Remote Sensing Data and Integrated Analysis of Multiple Geochemical Information for the Abagong Lead-Zinc Deposit in the Altay Region,Xinjiang,China

多光谱遥感找矿技术在荒漠戈壁滩地区已取得显著成效,但遥感技术在低山丘陵地带的使用资料较少,鉴于此,本论文以低山丘陵地貌类型的新疆阿勒泰的阿巴宫多金属矿带的铅锌矿床为研究区,研究矿区的蚀变信息的反射光谱特征,及在多光谱数据中各个波段的吸收性;利用ASTER多光谱遥感数据提取阿巴宫铅锌矿的构造信息,及岩性信息及蚀变异常信息,提取的各类信息与实际地质情况相吻合;对研究区的地质、化探、遥感找矿信息进行综合分析,遥感异常与地质资料信息吻合性较高,化探异常范围表现出"面"性特点,遥感异常表现为"点"性特点,遥感技术具有快速准确地缩小矿产勘查范围的优势。

The ore-search technology based on multi-spectrum remote sensing data has been successively applied to the Gobi arid region,whereas there are relatively few data for the usage of this technique in low-mountain and hill areas.This paper takes the Abagong lead-zinc deposit in Altay,Xinjiang as the study area for this issue,where the landform is characterized by low mountains and hills.We study the main altered mineral assemblages in the Abagogn lead-zinc deposit and ltheir reflectance spectra,and the absorptive properties of each band in the multiple spectra.Using the ASTER remote sensing data,we extract the structural,lithological and alteration information of the deposit,which are well consistent with the geological data.We make integrated analysis of information from geology,geochemical exploration and remote sensing on the GIS platform.The geochemical anomalies exhibit the character of ＂surface＂ and the alteration anomalies have the character of ＂point＂.In the all,the anomaly range determined by remote sensing is smaller than that from aerial-magnetic and geochemical information,so the remote sensing can be used to reduce the scope of exploration rapidly and accurately