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This study carried out comprehensive analysis on sedimentology, magnetic susceptibility(χlf) and color data of the continental sediments of the Liupanshan Group in Central China so as to obtain climatic change information during the 129.14–122.98 Ma interval. Based on the results of the ?lf and of the redness(a*), the section can be divided into two segments:(1) 129.14–126.3 Ma, with the lowest ?lf values and strongly variable relatively high values of redness and(2) 126.3–122.98 Ma, with high ?lf values and relatively low redness. Analysis of the lithology and facies as well as the magnetic minerals and their contents points to a detrital origin of the magnetic minerals and this allow us to interpret the relationship between magnetic susceptibility variations and climate changes. Our study shows that the climate was significantly dry and hot during the whole studied interval although the interval between 126.3 Ma and 122.98 was a little bit cooler with increased humidity.
This study carried out comprehensive analysis on sedimentology, magnetic susceptibility (χlf) and color data of the continental sediments of the Liupanshan Group in Central China so as to obtain climatic change information during the period of 129.14-122.98 Ma interval. Based on the results of the? lf and of the redness (a *), the section can be divided into two segments: (1) 129.14-126.3 Ma, with the lowest? lf values and strongly variable relatively high values of redness and (2) 126.3-122.98 Ma, with high? lf values and relatively low redness. Analysis of the lithology and facies as well as the magnetic minerals and their contents points to a detrital origin of the magnetic minerals and this allow us to interpret the relationship between magnetic susceptibility variations and climate changes. Our study shows that the climate was significantly dry and hot during the whole study interval although the interval between 126.3 Ma and 122.98 was a little bit cooler with increased humidity.