• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geology of Ore Deposits: A Journal of Theoretical and Applied Papers on All Aspects of Ore Genesis >Karst Role in the Formation of Diamond Placers of the Muno-Markhinskii Interfluve (Yakutsk Kiamond-Bearing Province, Russia)
【24h】

Karst Role in the Formation of Diamond Placers of the Muno-Markhinskii Interfluve (Yakutsk Kiamond-Bearing Province, Russia)

机译：喀斯特在Muno-Markhinskii Interfluve（俄罗斯雅库茨克钻石城省）的钻石砂形成中的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The paper is devoted to the karst role in the formation of aureoles of kimberlite indicator minerals (KIM) and diamond placeers in the modern alluvium of the Muna-Markha interfluve. Its territory is open, i.e., the Lower Paleozoic rocks hosting kimberlites and kimberlites themselves are exposed on the surface. Widely developed karst depressions are demonstrated to be the main suppliers of KIM and diamonds to the watercourse alluvium. These karst depressions were filled with Jurassic sedimentary material with KIM concentrations, which was mixed with authigenic iron minerals, i.e., limonite, magnetite, and hematite. This interpretation explains the high contrast in KIM distribution; i.e., sites with extremely high KIM concentrations alternate with watercourse areas devoid of heavy minerals. The revealed role of karst in KIM aureole formation in the open areas required an alteration of the panning sampling scheme, which was significantly improved. The kimberlite bodies of the Nakyn field located under the Jurassic sedimentary cover to the east from the Muna-Markha area, are accompanied by karst depressions. Some karst depressions in the open areas may also be associated with kimberlites. Therefore, the detailed study of karst and the comprehensive interpretation of magnetic anomalies are necessary for the discovery of kimberlite bodies. Most of these anomalies are produced by karst structures.
机译：该论文致力于喀斯特岩层中金伯利岩指示矿物质（KIM）和钻石沉积物中的金闪石的形成中的喀斯特作用。它的领土是开放的，即，下层生代岩石中含有金伯利岩，金伯利岩本身也暴露在地表。广泛发展的喀斯特洼地被证明是水道冲积层中主要的KIM和钻石供应商。这些喀斯特洼地充满了KIM浓度的侏罗纪沉积物质，并与自生铁矿物质（褐铁矿，磁铁矿和赤铁矿）混合。这种解释解释了KIM分布的高对比度。即，KIM浓度极高的地点与没有重矿物的河道区域交替出现。在开阔地带，岩溶在KIM金黄色素形成中的显露作用要求改变平移取样方案，这一方案得到了显着改善。 Nakyn油田的金伯利岩体位于Muna-Markha地区以东的侏罗纪沉积层之下，并伴有喀斯特洼地。开阔地带的某些岩溶洼地也可能与金伯利岩有关。因此，对于金伯利岩体的发现，对岩溶的详细研究和对磁异常的综合解释是必要的。这些异常大多数是由岩溶结构产生的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号