摘要
介绍了白垩纪陆相红层研究的现状及前景,特别是其在白垩纪陆相古气候恢复方面所具有的重要意义。系统讨论了白垩纪陆相红层中的特殊沉积及其古气候指示意义,并讨论了碳酸盐岩氧同位素方法定量古温度恢复的可能性及其局限性。指出白垩纪古气候具有时间上和空间上的不均匀性;并结合陆相红层的类型、特殊沉积的分布,参照古生物的地理分区对白垩纪古气候进行初步地理分区。
This paper deals with the present situation, prospect and significance of the research for continental Cretaceous red beds to reconstruction of paleoclimate in the Cretaceous period. Special deposits in the Cretaceous red beds and their significance as paleoclimate indicator as well as possibility and limitations of quantitative reconstruction of paleotemperature by oxygen isotopic method for carbonate rock are discussed. Paleoclimatc in the Cretaceous period was characterized by space - time inhomogeneity. A preliminary geographical division is made on the basis of type of the red beds, distribution of the special deposits in combination with paleobiogeographic division.
出处
《四川地质学报》
2006年第4期199-203,209,共6页
Acta Geologica Sichuan
基金
白垩纪地球表层系统重大地质事件与温室气候变化--白垩纪重要时期的古气候重建(2006CB701401)
关键词
特殊沉积
古气候
氧同位素
古温度
白垩纪
special deposit
paleoclimate
oxygen isotope
palcotemperature
Cretaceous period
