玉龙成矿带北段成矿多样性分析

【作者】 李志军；

【导师】 陈建平； 唐菊兴； 刘登忠；

【作者基本信息】 成都理工学院 ， 地图制图学与地理信息工程， 2001， 硕士

【摘要】 藏东地区处三江构造成矿带的中北段，构造位置独特，矿产资源丰富。尽管本区已经进行了大量研究工作，但还从未对本区的成矿多样性特征进行分析。因此，作者在收集大量地质、矿产、物探、化探数据资料的基础上，对本区成矿的多样性特征进行分析，以期能为探索藏东地区成矿机理，研究其成矿特征做一些有意义的基础工作。 作者首先对本区遥感图像进行处理分析，解译本区线性构造、环形构造。在解译中新发现两条北东向隐伏线性构造，认为对本区构造的发育以及玉龙斑岩铜矿床的形成均起到重要的控制作用。对解译的线性构造进行量化分析，结合地球物理、地球化学资料建立区域地质背景场。 非线性方法，地理信息系统的数据管理和空间分析技术在矿产资源与成矿预测中起着重要作用，本文利用地理信息系统的空间数据管理功能对地质、矿产、物探、化探、遥感数据进行分析，采用分形的方法研究矿床与断裂的分布关系，提出矿床在断裂带两侧具有分形分布特征，断裂两侧1-10km是矿床分布的无标度区，5.9km范围内是矿床的集中分布带；利用地壳升降系数法对本区地壳的升降程度进行分析，并对地层的含矿性特征进行解释；研究了本区元素地球化学异常分布的混沌特征，并提出元素地球化学异常分布的分形改正模型，效果明显。 通过对本区的成矿多样性特征的分析，作者进行了研究区的矿床时间谱系和空间谱系分析，总结了矿床在时间和空间上的分布规律，建立了本区的成矿预测模型。更多还原

【Abstract】 AnaIysis of Diversity of MineraIization inNorth Zone of Yulong MetaIIogenetic BeltMajor: Mapping and GIS EngineeringName: Li ZhijunSupervisor: ProL Chen JianpingAbstractThe study area is located in eastem Tibet, which consists of the middle northpart of the famous three-rhier tectonic metallogenetic be1t, where the tectonic seningis unique and the mineral resources are in abundance. Although there were manyresearch w6rk made in the area, the diversity ofmineralization of the area was nevermentioned. So, on the basis ofhavng a huge collection ofgeological, mineralgeophysical and geochemical evidences, the author studied the diversity ofmineralization in the hope of doing some significant foundation works for probing themetallogenetic mechanism and researching the mineralization characteristic.To begin with, the author processed the remote sensing images and interpretedthe linear and circular simctures. the linear and circular smictures. Through theinterPretation, two buried linear smiCtures of north-east orientation were discovered,which played an imPota role in the tectOnic development and the formation ofYulong porPhyry copper dePosit as well. On the basis ofquantitahve analysis oflinear structures, the regional geological background field was established wth the, geophysical and geochemical informahon.Both the spatial data management and spatial analysis technology of GIS andnon-linearity system were essential for metallogenehc prognosis. Therefore, throughthe process ofmultforiate data with the funchon of spatial data management of GISthe author dealt with the relahon ofminera depositS and faultS, Which behaved wthfractal featore, by means off ractal. And the crustal fiuctUahon level, which gave anexplanation to the ore-bearing resultS of the strtu, was reckoned up by the factor ofcrustal fluctuation. In addihon, the author researched the chaotic characterishc of thedistribution of geochemical anomalies and put forth a fractal correction model for it. It was proved effective.Finally, the author analyzed the regularities of distribution in time and spacethrough the analysis of time and space spectrums of mineral deposits according to the diversity of mineralization, and setup a model of metallogenetic prognosis of thenorth zone of Yulong metallogentic belt.更多还原