Geological prerequisites for differentiated approach to prospecting and exploration of alluvial gold placers: an example from the northeast of Russia

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• 作者：Yu. I. Goldfarb ; A. N. Petrov ; V. K. Preis…
• 关键词：gold ; placers ; gutter ; placer layer ; search ; exploration ; eastern Russia
• 刊名：Russian Journal of Pacific Geology
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：9
• 期：3
• 页码：166-177
• 全文大小：1,302 KB
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• 作者单位：Yu. I. Goldfarb (1)
  A. N. Petrov (1)
  V. K. Preis (2)
  D. A. Skurida (3)
  
  1. Shilo Northeast Interdisciplinary Science Research Institute, Far East Branch, Russian Academy of Sciences, ul. Portovaya 16, Magadan, 685000, Russia
  2. Northeast State University, per. Luksa 4, Magadan, 685000, Russia
  3. OOO Zolotodobyvayushchaya kompaniya, Kutuzovskii pr. 35/1, Moscow, 121165, Russia
  
• 刊物主题：Geology;
• 出版者：Springer US
• ISSN：1819-7159

文摘

A new approach to alluvial gold placers is suggested on the basis of research experience from northeastern Russia. Eight dynamic species of alluvial placers (brush, erosion, apron, perluvial, bar, equilibrium, aggradational, and gravitation) are distinguished based on their genetic geological differences. They are distinct in composition; volumetric structure; morphology in plan and in section; position in river valleys of various sizes; and relation to various morphostructures, gold sources, etc. In rich gold regions with numerous gold sources, the different placers are often combined and form complex placer deposits, the most complex of which occur in large valleys. All placer species and their combinations are characterized. Their features should be taken into account in projection, prospecting, exploration, and exploitation. Some directions for the differentiation of these tasks at different stages are suggested.