摘要
利用1/100万布格重力异常图,进行了东北地区上地幔顶部深度及其深部构造特征的研究.依据东北地学大断面深地震测深剖面的成果资料,参考本区及其邻区有关物探成果,结合东北地区复杂的地质构造背景,在东经115°～133°,北纬36°～50°范围内,切割了71条重力计算剖面,取得了10185个重力值。采用多边形线性积分与sinx/x计算方法,求得了东北地区上地幔顶部深度及其深部构造分布特征并对其进行了初步的分析与研究。
The top depth of upper mantle and deep tectonic characteritics in Northeastern China is studied in this paper by means of the Bouguer gravity anomaly map With the ratio of one to a million. According to resulting data in DSS of the geoscience transection in Norteastern China, refering to the region and neighbor about other geophysical exploration results and Combining with geological tectonic background, 10185 gravity values which is from 7 computing profile of gravity have been obtained in the range 115°—133°E and 38°—50°N. Making use of linear integral of polygon and calculation method of sinx/x, we obtain top depth of upper mantle and deep tectonic characteristics, and give preparative analyses and discussion.
出处
《防灾减灾学报》
1993年第1期25-36,共12页
Journal of Disaster Prevention And Reduction
关键词
东北地区
上地幔顶部深度
深部构造
Northeastern China
top depth of upper mantle
deep tectonic
