Neogene eolian deposits within the West Qinling Mountains:Climatic and tectonic implications

• 来源期刊: 科学通报(英文版)
• 学科: 地球科学
• 关键词: 秦岭山脉 风尘堆积 构造意义 气候 新近纪 晚中新世 地球化学分析 风尘沉积
• 年，卷（期）: 2010,（15）
• 所属期刊栏目: LETTERS
• 页码范围: 1483-1487
• 页数: 5页
• 分类号: P532 U459.2
• 语种: 英文

摘要

The Qinling Mountains constitute a key climate barrier between southern and northern China.Our recent investigations revealed widely spread eolian deposits of Neogene age mantling the piedmont highlands of the intermountain basins within West Qinling.Micro-mammalian fossils dated a 150.2 m section (NL-VI) near Xihe for the late Miocene to Pliocene (～10-4 Ma).Soil micromorphology,grain-size and geochemical analysis consistently define typical loess-soil alternations for the upper (0-66 m) and lower (98-150.2...