Sulphur isotope signature across the Early-Middle Cambrian boundary interval and its potential for the reconstruction of seawater and climate evolution, and the intercontinental correlation

目前对中、下寒武统系列硫同位素研究非常成功，但特别是将该项目扩展到碳酸盐伴生硫酸盐(CAS)、可还原铬硫(CRS)和有机结合硫(OBS)的多个硫同位素(32S、33S、34S和36S)的共同分析，为这一时间段创造了一个独特的数据集。这将有助于对硫循环和海洋成分的变化及其对中、下寒武统古生态和古气候条件的影响有一个定性和定量的了解。对西冈瓦那(西班牙、法国)、东冈瓦那(澳大利亚)、西伯利亚、劳伦西亚和东阿瓦隆尼亚的碳酸盐和混合碳酸盐-硅质碎屑岩序列的硫和碳同位素的系统研究将进一步提供有价值的代用信息，为下-中寒武统界线段的化学地层对比提供重要的潜力。

A continuation of the current very successful investigations of sulphur isotopes of Lower–Middle Cambrian successions, but, especially the extension of the project to the coeval analyses of multiple sulphur isotopes (32S, 33S, 34S, and 36S) of carbonate associated sulphate (CAS), chromium reducible sulphur (CRS), and organically bound sulphur (OBS) offers the creation of a unique data set for this time interval. This would allow developing a qualitative and quantitative understanding of changes in the sulphur cycle and in the oceanic composition, and their effects to palaeoecologic and palaeoclimatic conditions of the Lower–Middle Cambrian. The systematic investigation of sulphur and carbon isotopes from carbonate and mixed carbonate-siliciclastic successions of West Gondwana (Spain, France), East Gondwana (Australia), Siberia, Laurentia, and East Avalonia will further deliver valuable proxies, representing an important potential for chemostratigraphic correlation of the Lower–Middle Cambrian boundary interval.