YANG Yun-qi1, YIN Ke1*, WANG Chao-wen2, ZHAO Lu-lu1, CHEN Shu-ling1, ZHAO Chen-lei1, CHENG Shi1, LIU Zhen-dong1, HONG Han-lie1
(1. School of Earth Sciences, China University of Geosciences, Wuhan 430074, China;
2. Gemmological Institute, China University of Geosciences, Wuhan 430074, China)
Abstract: Sediment-paleosol is an effective carrier for recording the paleoenvironmental evolution and paleoclimatic changes. To study global climate change issues by using paleoenvironmental and paleoclimatic information recorded in the sediment-paleosol has become a hot topic in current earth science researches. Hematite and goethite are secondary minerals commonly found in the sediment-paleosol. The change of their contents can effectively reflect the changes among cold, warm, dry, wet environments during the soil formation. However, hematite and goethite in the sediment-paleosol have poor crystallinity and low contents. Therefore, to effectively quantify them has always been a difficult problem in the sediment-paleosol research. In recent years, a series of great achievements have been made in researches on the quantification of hematite and goethite in the sediment-paleosol by using diffuse reflectance spectroscopy (DRS). In this study, we have systematically summarized the principle of DRS applied in researches on the quantification of hematite and goethite, and three common quantitative methods and their applications, and deeply discussed problems and development trends in researches on the quantification of hematite and goethite.
Keywords: Sediment-paleosol; iron oxides; diffuse reflectance spectroscopy; climatic environment
ACTA MINERALOGICA SINICA Vol. 40, No.1, 2020, page 92-100
