本文關鍵詞： 找礦意義 植物地球化學異常 白莖絹蒿 金屬礦床 荒漠 東準噶爾北部 新疆　出處：《大地構造與成礦學》2017年01期 　論文類型：期刊論文

【摘要】：東準噶爾北部荒漠區(qū)植被屬土礫質荒漠植被類型,占優(yōu)勢的植物群落為白莖絹蒿(Seriphidium terrae-albae(Krasch)Poljak),覆蓋度為20%~25%。為探討植物地球化學方法在荒漠區(qū)找礦的有效性,本文選擇了隱伏于荒漠覆蓋下的喀拉通克銅鎳礦、希勒庫都克銅鉬礦和阿克塔斯金銅礦作為實例,研究生長在這些礦床地表的白莖絹蒿植物地球化學異常特征及其與礦化的關系。研究發(fā)現(xiàn):這些礦床上部均發(fā)育植物地球化學綜合異常,綜合異常的寬度略大于礦體或礦化帶的寬度,異常元素組合具有套合性和分帶性。本文認為:(1)植物異常中強度較高、清晰度及連續(xù)性較好、規(guī)模較大的主導元素組合及其異常參數(shù)可以作為區(qū)分不同礦化類型的標志或指標,進而圈定成礦靶區(qū);(2)植物綜合異常的空間分布及其套合性和分帶性,能大致確定隱伏礦床(體)的位置;(3)植物異常的元素組合、異常規(guī)模和異常強度,能大致推測隱伏礦床(體)的埋藏深度和礦化規(guī)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).
【作者單位】： 桂林理工大學廣西隱伏金屬礦產勘查重點實驗室/地球科學學院;廣東工業(yè)大學計算機學院;北京礦產地質研究院;
【基金】：國家自然科學基金項目(41363003、40972220)資助
【分類號】：P632.4;P618.2
【正文快照】： 哈薩克斯坦、烏茲別克斯坦等國很早就在荒漠景觀區(qū)對貴金屬、有色金屬和放射性金屬等礦床開展過不同程度的植物地球化學找礦工作(Ботова等,1963;Kонстaнтинов,1964;別克扎諾夫等,1974;Купустина和Ущаков,1986;Tалипов,1988)。近年來,這

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