| 燕山地区重、磁场特征分析与构造分区 |
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| 关键词:Yanshan area gravity anomaly magnetic anomaly tectonic division |
| 基金项目:中国地质调查局项目“燕山造山带反射地震剖面”（编号：200213000040）;国土资源部中国岩石圈三维结构专项计划,中国岩石圈三维结构数据库项目（编号：200010101） |
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| Gravity and Magnetic Characteristics and Tectonic Divisions of the Yanshan Area |
| It is held that Yanshan area can be divided into four different parts according to gravity and magnetic features. They are from north to south ① area north of Fengning-Longhua faulted zone, ②area between Fengning-Longhua faulted zone and Miyun-Banbishan-Chengde-Pingquan district, ③ area between Miyun-Banbishan-Chengde-Pingquan district and Sanhe-Changli district, and ④area south of Sanhe-Changli district. The Fengning-Longhua faulted zone is the southern boundary of the Inner Mongolia geological axis. The three density drastically-changing zones (Fengning-Longhua, Miyun-Banbishan, and Sanhe-Changli) may extend deeply into the middle crust, and the Chengde-Pingquan zone may be somewhat shallower than the above three zones. |
| ZHANG Ji-sheng,WANG Hai-yan.2005.Gravity and Magnetic Characteristics and Tectonic Divisions of the Yanshan Area[J].Acta Geoscientica Sinica,26(4):349-354. |
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