地球学报2011，Vol.32Issue(6)：652-658,7.DOI:10.3975/cagsb.2011.06.02
中国剩余重力异常与金属矿分布关系研究
The Relationship between the Residual Gravity Anomaly and the Distribution of Metallic Deposits in China
摘要
Abstract
Residual gravity anomaly reflects shallow crustal density and thickness of rocks and hence provides rich information for metallogenic research and exploration forecast. Four zoned gravity residual anomalies, I.e., Xin-Meng, North China, Central south and Tianshan Mountains in Xinjiang, were recognized on the basis of the relationship between the residual gravity anomalies and the distribution of metallic deposits in China. The authors found that metallic deposits are densely distributed along these zoned gravity anomalies. Metallic deposits were evenly distributed in planar form in such gravity anomaly areas as eastern Liaoning, Jilin, Heilongjiang, East China, North China and Sanjiang region. In these areas, iron and copper deposits are commonly distributed around positive gravity anomalies, and lead and zinic deposits are commonly distributed in negative gravity anomalies. In combination with tectonic and other information, the authors consider that zoned gravity anomalies reflect the knots of different terranes. In these zones, terrenes become thickened, deep metallogenic materials migrate upward, and faults are well developed, causing the zoned distribution of metallic ore deposits. The planar gravity anomaly zone reflects the geologically active zone, where metallic ore deposits are likely to be formed. According to the residual gravity anomalies and distribution of metallic ore deposits, the authors hold that the Altay region in Xinjiang, the Kunlun Mountains, the eastern edge of Tengger Desert, the Da Hinggan Ling low gravity anomaly area, and Sichuan-Yunnan-Tibet border area have favorable exploration prospects.关键词
剩余重力异常/金属矿分布/成矿规律/深部背景Key words
residual gravity anomaly/ distribution of metallic ore deposits/ metallogenic regularity/ deep background分类
天文与地球科学引用本文复制引用
黄宗理,严加永..中国剩余重力异常与金属矿分布关系研究[J].地球学报,2011,32(6):652-658,7.基金项目
本文由国家科技专项"深部矿产资源立体探测技术与试验"(编号:SinoProbe-03)和国家自然科学基金项目(编号:41104061)联合资助. （编号:SinoProbe-03）
