地球学报2001，Vol.22Issue(2)：141-144,4.
晚泥盆世弗拉斯期—法门期之交海水
温度变化的同位素证据
Isotopic Evidence for the Temperature Change of the Paleo-Ocean between
Late Devonian Fransnian Period and Famennian Period in South China
王大锐 1马学平 2董爱正 1朱德升1
作者信息
- 1. 中国石油勘探开发研究院,
- 2. 北京大学地质学系
- 折叠
摘要
Abstract
The shallow platform sedimentary facies is well-developed along the Laojiangchong section in Xikuangshan mine,Lengshuijiang area,Hunan Province,which includes the well-known Upper Devonian Fransian-Famennian(Fr/Fa) boundary.Long period of field studies and researches led the authors to reveal the palaeotnology as well as sedimentary associations and characteristics.The shells of brachiopod Cyrospirifer vernemili were analysed isotopically and by SEM in this study.The carbon and oxygen isotopic analyses (δ18O:-8.4‰～-9.6‰; δ13C: -2.2‰～0.5‰) show an abnormal shift around the boundary of Fr/Fa in South China,which can serve as a standard of regional tratigraphic correlation.Depending on the calculation of oxygen isotopes within the well preserved brachiopods,the authors drew the inference about temperature decreasing from late Fransian to early Famennian.关键词
晚泥盆世/弗拉斯—法门阶/稳定同位素组成/古气温分类
天文与地球科学引用本文复制引用
王大锐,马学平,董爱正,朱德升..晚泥盆世弗拉斯期—法门期之交海水
温度变化的同位素证据[J].地球学报,2001,22(2):141-144,4.
