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This book mainly deals with the Quaternary chronology,
stratigraphy, palaeoclimate and palaeoenvironment of the Loess Plateau
in China. The question of water and soil conservation and collapsibility
of loess are also discussed. Several modern chronological methods have
been used such as palaeomagnetic, electron spin resonance (ESR) , thermoluminescense
(TL) and 14C, the authors first proposed that the lower boundary of loess
strata went into Gauss chron, with the age of about 2.5-2.6 Ma B.P. The
lower boundary of Quaternary has been put at 2.48 Ma B.P. The controversy
of " Nihewan Bed" and " Sanmen Formation" has been
clarified. An entirely new stratigraphical table of the Loess Plateau
has been established. The experiment shows that total iron oxide content
andδ13C of CaCO3 in loess strata are good climatic indicators. The curves
of total iron oxide andδ13C are well correlated with the deep sea oxygen
isotopic curve. Pollen-spore analysis has been done in several famous
archaeological ruins, Such as Banpo Neolithic ruins in Xi'an, palaeolithic
ruins of Dingcun Man, Dali Man, Xiujiayao Man and Hetoa Man; and Shuidonggou
neo-palaeolithic ruins. The results help us to make further classification
of the Last Glacial Stage and Holocene.By treating the loess samples with
hydrochloric acid, getting rid of all soluble salts, we know that the
collapsibility of loess not only no disappeared, but intensively increased.
It fully proved that the water-irresisting connection between the grains
in loess is mainly of clayey minerals.
Contents
1. Quaternary chrono-stratigraphical research of the loess Plateau
2. Classification and correlation of Quaternary strata in Loess Plateau
3. Paleosols and weathering crusts in loess strata
4. Palaeoclimatic records in loess strata
5. Natural environment of Dali Man and Dingcun Man
6. Palaeoenvironment of the Last Glacial Stage in Loess Plteau
7. Palaeoenvironment of Holocene in Loess Plateau
8. Erosion of loess and its conservation
9. Research on collapsibility of loess
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