Paleomagnetic Polarity Research of Paleobiology Boundary(Bed27) of Meishan,Changxing,Zhejiang Province  

作　　者：Zhu Yanming Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074 Morinaga Hayao Department of Geology, Faculty of Sciences, Himeji Institute of Technology, Himeji 672 22, Japan 

出　　处：《Journal of Earth Science》1998年第3期62-63,共2页地球科学学刊（英文版）

摘　　要：The magnetostratigraphic sampling was carried out respectively in the inside part (14 cm away from the section surface along the bed) and outside part (5 cm away from the section surface along the bed) with no interval at the same bed (Bed 27) which the paleobiology boundary (PBB) of A and D sections lies in of Meishan, Changxing. This research shows that the deep samples suffered slighter secondary magnetization than the shallow ones did and in comparison with D section ’s samples, the samples of A section sustained slighter secondary magnetization. On the bases of the data, the secondary magnetization influence of which is relatively weak, this paper obtains the conclusion that the bed, in which the paleobiology boundary lies, lies within the reverse polarity subzone.The magnetostratigraphic sampling was carried out respectively in the inside part (14 cm away from the section surface along the bed) and outside part (5 cm away from the section surface along the bed) with no interval at the same bed (Bed 27) which the paleobiology boundary (PBB) of A and D sections lies in of Meishan, Changxing. This research shows that the deep samples suffered slighter secondary magnetization than the shallow ones did and in comparison with D section ’s samples, the samples of A section sustained slighter secondary magnetization. On the bases of the data, the secondary magnetization influence of which is relatively weak, this paper obtains the conclusion that the bed, in which the paleobiology boundary lies, lies within the reverse polarity subzone.

关 键 词：MAGNETOSTRATIGRAPHY secondary magnetization paleobiology boundary MEISHAN Changxing Zhejiang Province. 

分 类 号：Q911[天文地球—古生物学与地层学] P318.4[生物学—古生物学]