High resolution magnetostratigraphy of the Luochuan loess-paleosol sequence in the central Chinese Loess Plateau

被引：26

作者：

Liu Wei-Ming ^{[1
]}

Zhang Li-Yuan ^{[1
]}

Sun Ji-Min ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China

来源：

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION | 2010年 / 53卷 / 04期

关键词：

Loess-paleosol; Magnetostratigraphy; Magnetic polarity boundaries; GEOMAGNETIC EXCURSIONS; MATUYAMA-BRUNHES; MAGNETISM; DEPOSITS; SECTION; RECORDS; MARINE;

D O I：

10.3969/j.issn.0001-5733.2010.04.013

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Luochuan section is one of the best sections in the central Loess Plateau, but the exact stratigraphical positions of the magnetic polarity boundaries are not well studied. In this paper, we report detailed paleomagnetic investigations of the loess-paleosol sequences at Luochuan. Our results indicate that the Matuyama/Brunhes Boundary occurs at the top of soil S-8 and the upper and lower boundaries of the Jaramillo Normal Subchron occur at the top of soil S-10 and loess L-13, respectively. The upper and lower boundaries of the Olduvai Normal Subchron occur at the top of soil S-25 and loess L-29 corresponding to the top of previous divided units WS2 and WL3. We did not find the lower boundary of Matuyama Chron in this study.

引用

页码：888 / 894

页数：7

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