摘要
分形理论的引入极大地促进了现代定量地学的发展。在成矿预测的科研和实践中,人们曾先后建立了多种分形预测模型,并取得较好的效果。作者另辟蹊径,通过引入新的分形变量幂律度(power-law),建立地质-分形联合预测模型,在理论上进行了初步探索;并以云南省宁蒗—永胜地区铜矿成矿预测为例,圈定A级找矿靶区1处、C级找矿靶区2处,已知矿点的误判率较单一地质预测模型明显降低,体现了幂律度这一分形变量在成矿预测中的优越性。
Fractal theory has greatly promoted the development of modern quantitative geosciences. In the field of theory and practice of metallogenic prognosis, researchers have established fractal prognosis models and achieve successful outcomes. This paper discusses this model by another way. The authors introduce a new fractal parameter powerlaw, set a geofractal prognosis model and then, illustrate some advantages of the new parameter with copper deposits in the NinglangYongsheng region in southwestern China. In this paper, one place in Grade A mineral prospecting target area and two places in Grade C mineral prospecting target areas are delineated. The predicting errors of known deposit points using geofractal prognosis model are much less than using geological prognosis model. Powerlaw will be a useful parameter in metallogenic prediction. This research is of theoretic and practical significance.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第5期453-456,共4页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家科技攻关计划(No.2001BA609A-02)
国家地质调查局(No.200110200009)资助项目。
关键词
分形理论
幂律度
地质异常
成矿预测
铜矿
fractal theory
power-law
geological anomaly
metallogenic prognosis
copper deposits
