关键词: 高分辨率, 化学-生物地层学, 数值旋回模拟, 广西

Abstract: Combining mathematical analysis with the approach of chemo-biostratigraphy, the authors concentrated on numerical simulation of chemical cycle in the Upper-Mid Devonian sections at Baqi, Gubi and Dujin, Guangxi. The results are as follows: The relevant elemental combinations reflecting certain regional environmental changes are steady and clear; numerical analysis at these stratum sections shows the steady and clear chemical cycles, with which more refined subdivision in a conodont phylogenetic biostratigraphic zonation and cycle to cycle comparison between different sections can be made. Therefore it improves the resolution and precision of subdivision and correlation.

Key words: high resolution, chemo-biostratigraphy, numerical simulation of cycle, Guangxi