The behavior of heavy minerals in lithostream

被引：5
作者：
Akulov, N. I. [1 ]
Agafonov, B. P. [1 ]
机构：
[1] RAS, Inst Earths Crust, Siberian Branch, Irkutsk 664033, Russia
来源：
RUSSIAN GEOLOGY AND GEOPHYSICS | 2007年 / 48卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
eolian sands; heavy fraction; ilmenite; formation; Lake Baikal;
D O I：
10.1016/j.rgg.2007.02.010
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
This study is concerned with the eolian deposits on the Baikal shore. It has been established that (1) the eolian sands are distinctly divided into two sequences: Khuzhir (Late Pleistocene) and Peschanka (Holocene); (2) the ilmenite enrichment of the sands is due to the removal of sand grains (containing mainly light minerals) by strong winds up the shore, first, from a dewatered beach zone, and then, from zones of psammitic-material transition. This leads to the concentration of ilmenite and other heavy minerals, first, within the beach zone, and then, within the zones of prevailing eolian-sand transition. The accumulation-transition zones are most enriched in heavy minerals, including ilmenite; (3) the ilmenite content in the study Ti-ore placer deposit shows a high correlation (R = 0.89) with the total content of heavy minerals. (c) 2007, IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：267 / 271
页数：5
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