新疆阿勒泰阿巴宫铁矿遥感找矿综合信息研究

A Study of Remote Sensing Prospecting Deposits Information of Abagong Iron Deposits in Altay region, Xinjiang

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阿巴宫多金属矿带的铁矿床为研究区,研究矿区蚀变信息的反射光谱特征,及在ETM+、ASTER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铁矿的构造信息、岩性信息及蚀变异常信息,提取的上述信息与实际地质情况相吻合;对研究区的地质、物探、化探、遥感等找矿信息进行综合分析,遥感异常与航磁异常、化探异常的分布趋势及范围具有较高的一致性。

Prominent effects of multi-spectrum remote sensing data in prospecting deposits have been achieved in Gobi Arid Zone, whereas there is lesser information of remote sensing in low-hill land form of Altay region. In this paper, Abagong iron deposits zone in Altay, Xinjiang, which land form is low-hill, is the study area. Study the main altered mineral assemblages in Abagong iron deposits and list their reflectance spectra. The special bands of absorptive vale of reflectance spectra have been obtained from ASTER data. The absorptive vales of altered minerals are the principle and basis for remote sensing information extraction. Structure and lithology information are extracted form ASTER remote sensing data, and the results are well consistence with the filed geological survey. Alteration anomalies information is extracted from ASTER data, extraction of alteration anomalies information is well consistence with the geology data. Synthetic analyses of remote sensing, geology data, aeromagnetic anomaly, geochemical anomaly are studied on the GIS platform. The remote sensing and the aerial-magnetic information are similar on trends and their spatial distributions.