摘要
本文对采自华北地块南缘陕西铜川和韩城两条剖面上的晚石炭世至晚三叠世地层的650余块标本(35个采点)进行了系统的古地磁研究.经逐步热退磁处理和剩磁稳定性检验,在482块标本中获得稳定的特征剩磁分量,对其形成时代作了地质学分析后,以特征剩磁分量为基础,计算了华北地块在晚古生代到三叠纪的地磁极位置和纬度值,简单讨论该期内的运动形式.
Paleomagnetic samples have been collected from two sections at two locations: Tongchuan and Hancheng in Shaanxi Province. The samples were taken from sandstone and red mudstone from Upper Carboniferous to Upper Triassic. Stepwise thermal demagnetizations have been carried out on about 650 samples (53 sites). 482 samples among them have yielded successful results. High temperature characteristic components were successfully isolated from all the sites. Based on the results the paleopole positions and paleolatitudes are obtained and the movement of North China Block in these Periods are discussed.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第6期694-701,共8页
Chinese Journal of Geophysics
关键词
古地磁学
华北
地块
晚古生代
Paleomagnetism, North China Block, Late Paleozoic, Triassic.
