| 因子分类法在黑龙江塔河地区地质填图中的应用 |
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| 引用本文： | 时艳香,郝立波,陆继龙,纪宏金.因子分类法在黑龙江塔河地区地质填图中的应用[J].吉林大学学报(地球科学版),2008,38(5):899-903. |
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| 作者姓名： | 时艳香 郝立波 陆继龙 纪宏金 |
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| 作者单位： | 吉林大学,地球探测科学与技术学院,长春,130026;吉林大学,地球探测科学与技术学院,长春,130026;吉林大学,地球探测科学与技术学院,长春,130026;吉林大学,地球探测科学与技术学院,长春,130026 |
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| 基金项目： | 中国地质调查局地质调查项目 |
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| 摘 要： | 利用因子分类法在黑龙江塔河地区进行地球化学单元识别,根据各单元的理论地球化学意义及其与地质单元的对应关系,进行浅覆盖区地质填图研究。充分提取区域化探资料中的地球化学信息,将研究区识别为具有特定地质、地球化学意义的5个地球化学单元。其中:Be、Nb、Sn、Y、Rb单元主要反映研究区古生代花岗岩和中生代酸碱性火山岩的分布;Co、TFe、Cr、Ni、V、Ti、MgO单元主要反映研究区早元古代侵入岩、变质岩和古生代基性岩体的分布;SiO2、K2O、Na2O单元反映的地质单元主要为古生代侵入岩、中生代酸碱性火山岩和沉积岩;Al2O3、Li、F单元主要反映中生代火山岩的分布;CaO、Sr、Ba单元反映的是中生代沉积岩,可能与生物沉积作用有关,代表比较稳定的沉积环境。同时,根据不同单元的分布形态和边界走向,识别和推断了研究区的北东、北西、南北及东西向断裂构造。
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| 关 键 词： | 区域化探资料 因子分类法 地质填图 地球化学单元 |
Application of Factor Classification in Geological Mapping in Tahe Area, Heilongjiang Province |
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| SHI Yan-xiang,HAO Li-bo,LU Ji-long,JI Hong-jin.Application of Factor Classification in Geological Mapping in Tahe Area, Heilongjiang Province[J].Journal of Jilin Unviersity:Earth Science Edition,2008,38(5):899-903. |
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| Authors: | SHI Yan-xiang HAO Li-bo LU Ji-long JI Hong-jin |
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| Abstract: | The geochemical unit is identified by factor classification in Tahe area,Heilongjiang Province and geological mapping of thinly-covered areas is studied according to the theoretical geochemical meaning of each unit and its relationship to the corresponding geological units.Geochemical information is extracted sufficiently from regional geochemical data and the studied area is divided into five geochemical units with clear geological and geochemical meanings.Among these,the assemblage of Be,Nb,Sn,Y and Rb shows the distribution of the Paleozoic intrusive bodies and acid or alkali volcanic rocks.The assemblage of Co,TFe,Cr,Ni,V,Ti,MgO corresponds to the distribution of the Proterozoic intrusive and metamorphic rocks and Paleozoid basic rocks.The assemblage of SiO2,K2O and Na2O reflects the Paleozoic intrusive bodies,the acid or alkali volcanic rocks,and the sedimentary rocks.The forth type,Al2O3,Li and F,implicates the distribution of Mesozoic volcanic rocks.And the fifth assemblage,CaO,Sr and Ba,largely corresponds to the Mesozoic sedimentary rocks,implying a steady deposit environment probably dominated by bio-deposition.Furthermore,The NE,NW,SN and EW faults in the area under study are deduced and recognized based on the element distribution and their boundary trends. |
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| Keywords: | regional geochemical data factor classification geological mapping geochemical unit |
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