MAGNETOSTRATIGRAPHY OF PRECAMBRIANCAMBRIAN BOUNDARY AT MEISHUCUN SECTION, YUNNAN PROVINCE

作     者：刘椿 梁其中 李燕平 

作者机构：Institute of Geology Academia Sinica Beijing 100011 PRC Yunnan Institute of Geology Kunming 650011 PRC Department of Geophysical Stanford University Stanford California USA 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：1990年第33卷第1期

页      面：79-86页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

主　　题：Sinian-Cambrian boundary magnetostratigraphy mixed polarity zone. 

摘      要：Magnetostratigraphic studies of 112 cores specimens (249 samples) in a Precambrian-Cambrian section at Meishucun, Jinning County, Yunnan Province reveal the following: (ⅰ) Around the Sinian-Cambrian boundary in the Meishucun section existed a mixed polarity zone in which the Meishucun fauna went through an evolution of appearance—flourish—extinction. (ⅱ) The Meishucun section had a paleolatitude of no more than 20° during the Sinian-Cambrian, The phosphate deposits in this region and in the Zhongyicun Member were formed in the low-latitude environments.