- 责任者：Chen Yongqing (School of Earth & Mineral Resource ; China University of Geosciences ; Beijing 100083 ; China) ; Zhao Binbin
- 刊名：Geological Bulletin of China
- 出版年：2011
- 卷期：30(5)
- 关键词：金矿 ; gold ores ; 矿化作用 ; mineralization ; 重力异常 ; gravity anomaly ; 山东 ; Shandong Province
- 页码：p.661-669
- 图表：6 illus., 28 refs.
- 分类号：1001
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
Two methods of the singular value decomposition (SVD) and the Bi-dimensional empirical mode decomposition (BEMD) were applied respectively. Conclusions drawn by the comparative study are as follows: 1) the two methods consistently reveal the ore-controlling factor in the Tongshi gold orefield on the basis of original gravity data; 2) the two methods consistently reveal the spatial relationship between the ore-controlling factors and various gold mineralizations; 3) the image produced by BEMD reflects the structural features of the ore-controlling factor (Tongshi complex pluton) shows the distribution of other geological units in the Tongshi gold orefield; 4) the image produced by SVD might depict the inner structure of the Tongshi intrusion and the ringed contact metasomatic zone in more detail than that produced by BEMD; and 5) under the constraints of the ore-forming geological setting, the result obtained from the original gravity data by combination of the two methods can depict the relationship between the ore-controlling factors and the gold mineralizations more exactly than the result obtained only by one method.