利用 GC/MS从浙江长兴更新世红土中检测出种类繁多但含量甚微的分子化石 ,主要包括正构烷烃、长链三环萜、五环三萜、一元正脂肪酸、正脂肪醇、正烷基 - 2 -酮等系列。红土中的这些分子化石 ,特别是正构烷烃的特征表明本区的红土是在多水的环境下形成的 ,并且其上发育了以草本植物为主的高等植被。三环萜烷与三萜烷比值 (C2 3 /C3 0 )随地层的变化与红土网纹化程度密切相关 ,可能具有潜在的古气候指示意义 A great variety of molecular fossils have been detected in the Pleistocene laterites of Changxing, Zhejiang using GC / MS, including n-alkanes, long chain tricyclic terpenes, pentacyclic triterpenes, monofatty acids, n-alkanes, Base - 2 - ketone and other series. The characteristics of these molecular fossils in the lateritic clay, especially the n-alkanes, suggest that the lateritic clay in this area was formed under a multi-water environment and that higher herbaceous vegetation was developed. The ratio of tricyclic terpane to triterpene (C2 3 / C3 0) is closely related to the degree of laterite reworking with the formation, and may have potential paleoclimatic indication