Predicting Gold–Silver Mineralization within the Pepenveemskii Ore Zone of the Chukchi Peninsula Based on Resurs, Kanopus, and ASTER Space Imagery

Pub Date : 2024-02-20 DOI:10.1134/s0001433823120149

G. A. Milovsky, A. A. Kirsanov, K. L. Lipiyainen, A. D. Aparin

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Abstract

When decoding space sensing materials of the eastern part of the Chukchi Peninsula on a scale of 1 : 50 000, structural elements of tectonic–volcanogenic genesis are identified, represented by linear, arc, ring, zonal–concentric structural elements of various ranks. Ring structures up to 2 km in diameter and the faults cutting them, predominantly of northeastern and submeridional strike, control the localization of gold mineralization in the Pepenveemskii ore–placer zone. Based on the computer processing of ASTER IR space surveys in the Pepenveemskii zone, areas of development of hydrothermally altered rocks (berezites, secondary quartzites, and sericite–hydromica–quartz metasomatites) genetically associated with mineralization are identified. The use of high-resolution satellite imaging in combination with geophysical data has made it possible, on a scale of 1 : 10 000, to identify gold-prospective areas associated with volcano–dome structures, which are characterized by an increased density of lineaments and are associated with the formation of subvolcanic rhyolites.

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根据Resurs、Kanopus和ASTER空间图像预测楚科奇半岛Pepenveemskii矿区的金银成矿作用

摘要在对楚科奇半岛东部的空间传感材料进行 1 : 50 000 比例尺解码时，确定了构造-火山成因的结构元素，这些元素由不同等级的线形、弧形、环形、带状-同心圆结构元素代表。直径达 2 千米的环状构造及其切割断层（主要为东北走向和水下走向）控制着佩彭韦姆斯基矿采空区金矿的定位。根据对 Pepenveemskii 区 ASTER 红外空间勘测的计算机处理，确定了与矿化有遗传关联的热液蚀变岩（闪长岩、次生石英岩和绢云母-水云母-石英变质岩）的发育区域。利用高分辨率卫星成像与地球物理数据相结合，可以在 1:10 000 的比例尺上确定与火山穹隆结构相关的金矿远景区，这些地区的特点是线状体密度增加，与次火山流纹岩的形成有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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