天文周期与异重流沉积前沿科学问题探讨

Discussion on the Scientific Issues in Frontiers of Astronomical Cycles and Hyperpycnal Flow Deposits

天文周期驱动的气候旋回与异重流沉积是当今国内外地质学研究的前沿科学问题,但二者之间的关系尚未引起足够的关注。本文在广泛的文献调研基础上,总结了相关领域的研究进展,分析了相关领域的发展趋势。分析认为①天文年代学研究向高精度、“深时”方向发展;②天文周期及气候旋回对沉积的控制作用研究向高分辨率方向发展;③异重流沉积研究由海相向陆相拓展,我国湖泊异重流沉积相关的研究成果将如雨后春笋般增长;④异重流沉积对天文周期与气候旋回的响应将成为地学研究的新趋向;⑤大量研究证实气候旋回显著影响有机质富集;⑥异重流与有机质富集的关系研究将逐渐深入;⑦天文周期分析方法及反映气候条件的地球化学指标的综合应用,将成为研究异重流沉积的有效方法之一。

Astronomical period-driven climatic cycles and hyperpycnal flow deposits have become the frontier scientific issues in geological research both at home and abroad,but the relationship between them has not attracted enough attention.Based on extensive literature consultations,this paper summarized the research progresses in related fields and analyzed the development trend of related fields.The results show that:①The study of astrochronology is developing towards high precision and“deep time”;②The study of controlling the deposition of astronomical period and climatic cycles is developing towards high resolution;③The study of hyperpycnal flow deposits is expanding from sea to land,and the research on the relationship between lacustrine hyperpycnites and the enrichment of organic matters in China will grow rapidly as“spring shoots after rain”;④The response of hyperpycnal flow deposits to astronomical cycle and climate cycles will become a new trend of geoscience research;⑤A large number of studies have confirmed the significant influence of climatic cycles on the enrichment of organic matters;⑥The study on the relationship between hyperpycnal flow deposits and organic matters will gradually deepen;⑦The combined use of astronomical cycle analysis and the comprehensive application of geochemical indexes reflecting climatic conditions will be one of the effective methods to study the hyperpycnal flow deposition.