文档介绍：
Major Element Characteristics of the Reticulate Laterites
and their Indicative Weathering Intensity in Northeastern
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10
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Guangdong Province, China during the Late Pleistocene#
WEN Xiaohao*
(School of Geography Science, South China Normal University, Guangzhou 510631)
Abstract: Reticulate laterites have been well-developed on the top regolith materials of South China.
Two typical profiles, Linjiang and Jiaoling, are selected and their ages and major elements are
determined. The data from three thermoluminescence (TL) and three optically stimulated luminescence
datas reveal that both reticulate laterites of Linjiang and Jiaoling profiles correspond well with the late
quaternary, especially the last interglacial. The geochemical data show that strong-weathered reticulate
laterites are posed of SiO2, Al2O3 and TFe, which tend to be easily assembled under warm
and wet conditions, and the distributing limits are to %, to % and to %
in Linjiang and % to %,% to %,% to %, in respect. The other major
elements such as Na2O, CaO, MgO, which tend to be easily eluviated under warm and wet conditions,
and their distributing limits were all below %, showing being violently eluviated. These
geochemical characteristics (such as major elements’ distributings, weathering eigenvalues and CIA
values) indic