因子分析在地球化学分区中的应用及指示意义——以山东省莒县—五莲地区1:5万水系沉积物测量数据为例

卢文东, 孙斌, 李光杰, 魏伟, 夏小兴, 潘丙磊, 沙晴, 吕小红, 李元春, 乔娜

Application of factor analysis in geochemical zoning and its implications: A case study of 1:50,000 stream sediment survey in the Juxian-Wulian area, Shandong Province

LU Wen-Dong, SUN Bin, LI Guang-Jie, WEI Wei, XIA Xiao-Xing, PAN Bing-Lei, SHA Qing, LYU Xiao-Hong, LI Yuan-Chun, QIAO Na

图1 研究区大地构造背景图(a,据张增奇[7]修改)及区域地质图(b) 1—第四系;2—上白垩统-古新统王氏群;3—下白垩统大盛群;4—下白垩统青山群;5—下白垩统莱阳群;6—寒武-奥陶系;7—青白口系-震旦系土门群;8—中太古界沂水岩群;9—早白垩世崂山序列;10—早白垩世大店序列;11—早白垩世伟德山序列;12—早白垩世埠柳序列;13—晚侏罗世玲珑序列;14—晚三叠世柳林庄序列;15—新元古代铁山序列;16—新元古代月季山序列;17—新元古代梭罗树序列;18—新元古代荣成序列;19—中元古代海阳所序列;20—新太古代红门序列;21—新太古代沂水序列;22—新太古代泰山序列;23—早白垩世辉石二长岩;24—早白垩世安山玢岩;25—早白垩世闪长玢岩;26—早白垩世粗安斑岩脉;27—闪长玢岩脉;28—花岗斑岩脉;29—正长斑岩脉;30—二长斑岩脉;31—石英斑岩脉;32—辉绿岩脉;33—沙沟玄武岩;34—压扭性断裂/性质不明断裂/张扭性断裂;35—推测断裂;36—地质界线;37—金矿(点);38—铜矿(点);39—黄铁矿;40—铅矿点;41—锌矿点;42—多金属矿点;43—铅锌矿点;44—铁矿点;45—银矿点;46—钾矿点;47—稀土矿点;48—研究区范围

Fig. 1 Geotectonic background map of the study area (a, modified by Zhang[7]) and regional geological map of the study area (b) 1—Quaternary system; 2—upper Cretaceous-Paleocene series Wangshi Group; 3—lower Cretaceous Dasheng Group; 4—lower Cretaceous Qingshan Group; 5—lower Cretaceous Laiyang Group; 6—Cambrian-Ordovician system; 7—Qingbaikou-Sinian Tumen Group; 8—middle Paleozoic Yishui Rock Group; 9—early Cretaceous Laoshan sequence; 10—early Cretaceous Dadian sequence; 11—early Cretaceous Weideshan sequence; 12—early Cretaceous Buliu sequence; 13—late Jurassic Linglong sequence; 14—late Triassic Liulinzhuang sequence; 15—Neoproterozoic Tieshan sequence; 16—Neoproterozoic Yuejishan sequence; 17—Neoproterozoic Suoluoshu sequence; 18—Neoproterozoic Rongcheng sequence; 19—Mesoproterozoic Haiyangsuo sequence; 20—Newarchean Hongmen sequence; 21—Newarchean Yishui sequence; 22—Neoarchean Taishan sequence; 23—early Cretaceous pyroxene diorite; 24—early Cretaceous andesite; 25—early Cretaceous diorite porphyry; 26—early Cretaceous Coarse andesite vein; 27—diorite porphyry vein; 28—granite porphyry vein; 29—syenite porphyry vein; 30—diorite vein; 31—Quartz porphyry vein; 32—diabase veins; 33—Shagou basalt; 34—compressive torsional fracture/fracture with unknown properties/tensile torsional fracture; 35—speculation of fracture; 36—geological boundary; 37—gold mine(point); 38—copper mine(point); 39—pyrite; 40—lead ore occurrence; 41—zinc ore occurrence; 42—multi metallic mineral occurrences; 43—lead zinc mineral occurrences; 44—iron ore deposit; 45—silver mining site; 46—potassium ore occurrence; 47—rare earth mineral occurrences; 48—scope of the research area