关键词: 关键词：陆相特殊沉积;古气候;粘土矿物;气候指数;氧同位素测温

Abstract:

The continental special deposits were formed on the surface of the geosphere, hydrosphere, atmosphere and biosphere, which are more effective than marine strata in recording the information of the earth surface environment. By the research of the clay mineral and climatic index of the sediment in the sedimentary rock and its temperature measured by oxygen isotope, we can get different climate information. On the basis of these research methods, we can extract from continental special deposits, such as continental red beds, desert sedimentary systems, evaporates, coal and oil shale etc., some rich climate information as the following: the desert sedimentary systems represent hotarid climate; the appearance of the continental red beds reflects the high temperature and oxidized environment, which can formed in both arid and humid tropical climate; the mirabilite implies the climatic conditions being arid and cold; the gypsum stands for hotarid, high water salinity and strong evaporation condition; the coal and oil shale generally gathered in the environment with warm and humid climate. These researches on the special deposits can be used to reconstruct paleoclimatic and continental paleoenvironment.

Key words: Key words: continental special deposit; paleoclimate; clay mineral; climatic index; temperature measurement by oxygen isotope