安徽北淮阳沙坪沟钼矿区水系沉积物粒级试验研究
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摘要
通过在安徽省北淮阳沙坪沟超大型钼矿区开展水系沉积物测量粒级试验,基于沙坪沟钼矿区分散流长度试验研究,对不同粒级(截取粒级和细粒级)水系沉积物粒级占比、元素含量变化特征等进行对比分析,探讨研究区主要成矿元素含量衰减特征。通过总结不同粒级水系沉积物的构成特征,认为在北淮阳地区开展水系沉积物测量适宜采用截取粒级的采样方法,为该地区开展1∶50 000化探普查提供参考。
This study carried out granularity experiment of the stream sediments from the Shapinggou super-large molybdenum ore deposit in the northern Huaiyang area.On the basis of dispersed flow length experiment,the proportion and change features of main ore-forming elements contents in different graded stream sediments were compared so as to analyze the attenuation characteristic of the main ore-forming elements.The compositions of the varied-grain stream sediments suggest that the sampling method of intercepted granularity can be applied in the survey of stream sediment measurement.This study provides a technique basis for conducting the 1∶50 000 geochemical survey in the northern Huaiyang area.
This study carried out granularity experiment of the stream sediments from the Shapinggou super-large molybdenum ore deposit in the northern Huaiyang area.On the basis of dispersed flow length experiment,the proportion and change features of main ore-forming elements contents in different graded stream sediments were compared so as to analyze the attenuation characteristic of the main ore-forming elements.The compositions of the varied-grain stream sediments suggest that the sampling method of intercepted granularity can be applied in the survey of stream sediment measurement.This study provides a technique basis for conducting the 1∶50 000 geochemical survey in the northern Huaiyang area.
引文
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[2]刘振国,田雪莲,于德福.国土资源大调查进入收官阶段服务经济社会发展成绩卓著[N].中国国土资源报,2010-07-15.
[3]冷福荣,李志强.1∶20万区域化探方法核心技术“取样粒级”的讨论[J].物探与化探,2009,33(6):683.
[4]夏锦霞,李方林,杨东,等.用地球化学异常图和方差分析比较两种采样粒级的化探效果[J].物探与化探,2009,33(5):524-528.
[5]杨少平,弓秋丽,文志刚,等.地球化学勘查新技术应用研究[J].地质学报,2011,85(11):1844-1877.
[6]张华,张玉领,史新民.河北围场1:20万区域化探方法技术讨论[J].物探与化探,2004,28(1):35-38.
[7]王会峰,彭立华,安兴,等.森林沼泽区区域化探新旧方法技术应用效果对比[J].物探与化探,2008,32(5):502-508.
[8]杨少平,焦保权,孙忠军,等.森林沼泽景观区区域化探异常追踪方法技术[J].物探与化探,2008,32(5):480-487.
[9]徐永利,郑有业,徐广东,等.青海省大柴旦双口山荒漠戈壁景观区1:5万水系沉积物测量采样方法技术研究[J].西北地质,2012,45(1):307-316.
[10]张景,陈国光,张明,等.宁芜盆地白象山矿区物化探异常特征及找矿意义[J].华东地质,2016,37(2):147-151.
[11]刘宝山,赵立国.黑河市大新屯土壤地球化学测量应用及找矿效果[J].华东地质,2016,37(2):152-156.
[12]杨少平,刘华忠,孔牧,等.羌塘高原典型矿区水系沉积物地球化学特征与区域化探扫面方法[J].地球学报,2015,36(3):367-376.