• 中文核心期刊
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柴达木盆地第四纪孢粉组合及古气候波动

康安, 朱筱敏, 韩德馨, 王延斌, 康强

康安, 朱筱敏, 韩德馨, 王延斌, 康强. 2003: 柴达木盆地第四纪孢粉组合及古气候波动. 地质通报, 22(1): 12-15.
引用本文: 康安, 朱筱敏, 韩德馨, 王延斌, 康强. 2003: 柴达木盆地第四纪孢粉组合及古气候波动. 地质通报, 22(1): 12-15.
KANG An, ZHU Xiaomin, HAN Dexin, WANG Yanbin, KANG Qiang. 2003: Quaternary sporopollen assemblages and paleoclimatic fluctuation in the Qaidam basin. Geological Bulletin of China, 22(1): 12-15.
Citation: KANG An, ZHU Xiaomin, HAN Dexin, WANG Yanbin, KANG Qiang. 2003: Quaternary sporopollen assemblages and paleoclimatic fluctuation in the Qaidam basin. Geological Bulletin of China, 22(1): 12-15.

柴达木盆地第四纪孢粉组合及古气候波动

Quaternary sporopollen assemblages and paleoclimatic fluctuation in the Qaidam basin

  • 摘要: 柴达木盆地是中国目前保存较为完整的、连续的、巨厚的河-湖相沉积记录的盆地。通过对ZK701+801、水6孔、涩中6和涩深1井等典型剖面孢子花粉组合特征和分布规律的研究,详细地论述了第四纪孢粉组合带及其所代表的植被、气候演变进程。自1.87MaB.P.以来共识别出了59个孢粉组合带,划分出29个完整的冷暖气候旋回,并且同中国西北第四纪黄土-古土壤系列的37个气候旋回以及深海钻孔氧同位素气候旋回进行了较好的对比。
    Abstract: The Quaternary of the Qaidam basin is a successive and complete accumulation of fluvial-lacustrine sediments with a great thickness. Based on a study of Quaternary sporopollen assemblages and their vertical distribution at typical profiles of holes ZK701+801, Shui 6, Sezhong 6 and Seshen 1, this paper discusses in detail Quaternary assemblage zones and the vegetation and climatic evolution represented by them. A highly precise sporopollen climate curve is obtained, which shows that alternation of dry-cold and wet-warm climates is the basic model of the Quaternary paleoclimate evolution in the Qaidam basin. Altogether 59 sporopollen assemblage zones and 29 complete cold-warm paleoclimatic cycles since 1.87 Ma B.P. have been recognized. They can be well correlated with the 37 paleoclimate cycles derived from Quaternary loess and paleosols in northwestern China and the deep sea oxygen isotope climate records.
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