摘要
构造倾斜会使原生剩磁偏角产生偏差，从而影响对地体构造旋转等特征的分析。对这种偏角偏差进行了理论分析和计算。倾伏褶皱在野外难以识别，即或识别，倾伏要素也很难准确测定。为此提出了利用多个参考点的古地磁资料分析地体运动特征的新方法。该方法是基于剩磁倾角数据，从而避免了偏角误差的影响，提高了分析的可靠性。利用该方法对我国西北地区的地质构造演化进行了研究，初步实现了该区古生代古地理的重建。
When we use declination data to analyze the rotation features of a terrane or plate, the declination error caused by the plunge of the fold axis can sometimes be very significant. The authors of this paper analyzes and calculates this kind of error. However, the plunge sometimes is difficult to identify, so it is necessary to find a new method which can protect the analysis of rotation features from the influence of the error caused by the plunge. For this, a paleomagnetic multireference points method is proposed. The method only use inclination data, therefore, the analysis to tectonic rotation is more reliable. It is applied to study the tectonic evolution of the western China. This will open up the new prospects for the study of the tectonic rotation.
出处
《长春科技大学学报》
CSCD
1998年第1期80-84,共5页
Journal of Changchun University of Science and Technology
关键词
古地磁
倾伏褶皱
多参考点
地体构造
构造演化
paleomagnetism, the plunge of the fold axis, multireference points, terrane tectonic
