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

摘要： 应用数学分析方法并结合化学-生物地层学手段, 对广西巴漆、谷闭、堵金等 3 个中-上泥盆统剖面进行了系统的化学元素分析测试数据的数值旋回模拟。分析结果表明: 能反映一定区域环境意义的相关元素的组合是客观稳定的;数值分析可在地层剖面上揭示出稳定、清晰的波动旋回; 这些旋回可以将牙形石谱系带进行更精细的带内划分, 并且可在不同的剖面间进行牙形石谱系带内旋回与旋回之间的对比, 提高了牙形石谱系带内地层划分对比的精度和分辨率。

关键词: 高分辨率, 化学-生物地层学, 数值旋回模拟, 广西