新疆彩霞山铅锌矿及外围遥感蚀变信息提取及找矿应用

Extracting Alteration Remote Sensing Abnormal Information in Caixiashan Lead-zinc Deposit and Periphery and Prospecting Application

通过对彩霞山矿区成矿地质特征分析,总结区内成矿规律,分别对TM图像上已知蚀变岩分布区及地质背景采样,总结地物在不同波段的波谱特征,建立提取蚀变信息的遥感地质模型。在该模型指导下,完成彩霞山铅锌矿区及外围的蚀变遥感异常信息提取。通过野外验证,蚀变遥感异常信息分布与已知矿化带吻合度较好,证实该方法在东天山荒漠戈壁及同类地区可行。

Caixiashan lead-zinc deposit is the unique large-scale deposit in eastern Tianshan mountain now, the paper studied the extraction of ETM＋ mineralization alteration remote sensing abnormal information in this region. We could summarize its metallogenic regularities by analyzed the mineralization geological feature of mining region in Caixi- ashan. And by sampling the known alteration distribution area and geologic setting on TM image, we could summarize the Spectrum characteristics in different wave bands of the object., then, the geologic model of extracting alteration re- mote sensing abnormal information could been developed. As a result, we could accomplish the work of extracting alter- ation remote sensing abnormal information in Caixiashan lead-zinc deposit. Through field actual verification, there had good correspondence between the distributing of alteration remote sensing abnormal information and the known mineral- ization, So it proved that the methed was feasible in eastern Tianshan mountain and those regions with the similar geolog- ic background.