Chemostratigraphy of Eifelian-Givetian Stage Boundary at Liujing Section, Guangxi, South China

详细信息   

• 责任者：Liu Jiang (School of Earth and Space Sciences ; Peking University ; Beijing 100871) ; Bai Zhiqiang
• 刊名：Geological Review
• 出版年：2008
• 卷期：54(5)
• 关键词：艾菲尔阶 ; Eifelian ; 吉维特阶 ; Givetian ; 元素地层学 ; element stratigraphy ; 广西 ; Guangxi
• 页码：p.683-693, 724
• 图表：4 illus., 2 tables, 1 plate, 42 refs.
• 分类号：1200
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

摘要

This study represents the chemostratigraphical work on limestones covering the Polygnathus xylus ensensis to lower varcus zones at Liujing section, Guangxi, South China. In conjunction with biostratigraphic abservations, values/contents and trends of Ce/La, Ni/La, δ¹³C_carb of unaltered limestones presented in this study provide the most powerful biochemostratigraphic tool in recognizing a series of anoxic events, Nickel-events and bio-events. Together with the large positive excursion of δ¹³Ccarb just on the Eifelian-Givetian boundary reflecting higher productivity and burial of organic matter, the essentially pronounced negative excursions near the boundary relating to the global kacak-otomari event are well correlated by those of Volf Gorge and U dubu sedmi bratri in the Barrandian Basin, Czech Republic.