摘要
矿床密集区的成矿地质背景与地壳成岩、变迁及化学作用下的物质运移相关,广东地区侵入岩在入侵过程中引起各种地质作用,最终与铁金银铜等多种金属矿床成因直接相关。为了研究岩浆岩与成矿的关系,利用重力资料分析侵入岩分布,认为剩余重力负异常是岩浆岩的反应,并利用小波变换多尺度分解等处理方法,进一步分析侵入岩的大致空间分布形态、侵入可能路径,总结出矿床密集区的重力场特征表现为矿床对应于剩余重力负异常及其边界或异常奇变区,结合地质认识对矿床密集区作出在重力负异常高阶细节的边界或其奇变区为大中型矿床集中产出区的预测。这一结果将起到预测矿床规模及分布范围的作用。
The metallogenic geological setting of the ore concentration area was related to the crustal deformation during the Paleoprot-erozoic geological evolution of the crust and the substance migration under the chemical action. The intrusive rocks in Guangdong caused a variety of geological processes, and were associated with the formation of various metal deposits. In order to study the relationship be-tween magmatic rocks and mineralization, the authors used gravity data to analyze the distribution of intrusive rocks and revealed that the residual gravity anomaly resulted from the reaction of magmatic rocks. It is held that, using multi-scale wavelet decomposition ap-proach, we can analyze the spatial distribution of intrusive rocks and the intrusive path to sum up the gravity field characteristics of the ore concentration area and, in combination with geological knowledge, we can eventually predict the the ore concentration area.
出处
《物探与化探》
CAS
CSCD
2014年第3期465-470,共6页
Geophysical and Geochemical Exploration
关键词
重力异常
小波变换
多尺度分解
侵入岩
广东
矿床密集区
gravity
wavelet transform
multi-scale decomposition
intrusive rocks
Guangdong
ore concentration area
