新疆东准噶尔北部荒漠区金属矿床白茎绢蒿植物地球化学异常特征及其找矿意义

发布时间：2018-01-27 02:14

本文关键词： 找矿意义植物地球化学异常白茎绢蒿金属矿床荒漠东准噶尔北部新疆　出处：《大地构造与成矿学》2017年01期 　论文类型：期刊论文

【摘要】：东准噶尔北部荒漠区植被属土砾质荒漠植被类型,占优势的植物群落为白茎绢蒿(Seriphidium terrae-albae(Krasch)Poljak),覆盖度为20%~25%。为探讨植物地球化学方法在荒漠区找矿的有效性,本文选择了隐伏于荒漠覆盖下的喀拉通克铜镍矿、希勒库都克铜钼矿和阿克塔斯金铜矿作为实例,研究生长在这些矿床地表的白茎绢蒿植物地球化学异常特征及其与矿化的关系。研究发现:这些矿床上部均发育植物地球化学综合异常,综合异常的宽度略大于矿体或矿化带的宽度,异常元素组合具有套合性和分带性。本文认为:(1)植物异常中强度较高、清晰度及连续性较好、规模较大的主导元素组合及其异常参数可以作为区分不同矿化类型的标志或指标,进而圈定成矿靶区;(2)植物综合异常的空间分布及其套合性和分带性,能大致确定隐伏矿床(体)的位置;(3)植物异常的元素组合、异常规模和异常强度,能大致推测隐伏矿床(体)的埋藏深度和矿化规模。
[Abstract]:The vegetation in the desert area in the north of East Junggar belongs to the type of soil and gravel desert vegetation. The dominant plant community was Seriphidium terrae-albae Kraschchon Poljak. The coverage is 20 / 25. In order to explore the validity of phytogeochemical methods for prospecting in desert areas, the Karatonk copper-nickel deposit, which is hidden under desert cover, is selected in this paper. The Shiller Kuduk copper-molybdenum deposit and the Aktas gold and copper deposit are used as examples. The geochemical anomalies of Artemisia albicans grown on the surface of these deposits and their relationship with mineralization are studied. It is found that the upper part of these deposits is characterized by comprehensive phytogeochemical anomalies. The width of the comprehensive anomaly is slightly larger than that of the orebody or the mineralization zone, and the anomalous element assemblage has the concatenation and zonation. This paper holds that the plant anomaly has higher intensity, better clarity and better continuity. The larger dominant element assemblage and its anomalous parameters can be used as markers or indicators to distinguish different mineralization types and then delineate the ore-forming target area. (2) the spatial distribution of the plant Synthetical anomaly, its intercalation and zonation can roughly determine the location of the concealed deposit (body); 3) the element assemblage of plant anomaly, anomaly scale and anomalous intensity, can roughly infer the buried depth and mineralization scale of concealed deposit (body).
【作者单位】：桂林理工大学广西隐伏金属矿产勘查重点实验室/地球科学学院;广东工业大学计算机学院;北京矿产地质研究院;
【基金】：国家自然科学基金项目(41363003、40972220)资助
【分类号】：P632.4;P618.2
【正文快照】： 哈萨克斯坦、乌兹别克斯坦等国很早就在荒漠景观区对贵金属、有色金属和放射性金属等矿床开展过不同程度的植物地球化学找矿工作(Ботова等,1963;Kонстaнтинов,1964;别克扎诺夫等,1974;Купустина和Ущаков,1986;Tалипов,1988)。近年来,这

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