傅志明,李仕虎,王维钰,王世骐

• 1:中国科学院地质与地球物理研究所
• 2:中国科学院研究生院
• 3:中国科学院古脊椎动物与古人类研究所

摘要(Abstract)：

柴达木盆地作为青藏高原东北缘的关键构造单元,其巨厚的新生代沉积地层记录了高原隆升及扩展、古环境及古生物演化的重要信息。近年来,基于大量磁性地层年代学研究,结合生物地层、同位素测年及构造—沉积事件约束,研究者逐步建立了盆地新生代地层的年代框架。由于盆地早期地层缺乏可靠的生物化石、不同剖面之间地层划分和同位素测年结果的差异性,以及地层中可能存在的沉积间断,目前柴达木盆地地层年龄存在“老”和“新”两种截然不同的观点,即柴达木盆地新生代地层始于～52 Ma或～30 Ma。未来需要对柴达木盆地新生代早期地层(如路乐河组)开展更多的生物地层年代学、同位素年代学和沉积学研究,为磁性地层对比提供更加可靠的锚点,以精确限定柴达木盆地新生代地层的年代框架。

关键词(KeyWords)： 柴达木盆地;新生代沉积;年代学;青藏高原

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2023YFF0804503)资助

作者(Author): 傅志明,李仕虎,王维钰,王世骐

DOI: 10.19839/j.cnki.dcxzz.2025.0033

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