Geochemistry of red residua
WebGeochemistry of red residua underlying dolomites in karst terrains of Yunnan-Guizhou Plateau II. The mobility of rare earth elements during weathering Hongbing Ji *, Shijie … WebFeb 27, 2013 · The red residua is a type of red clay soil produced by the weath-ering of limestone (Durn et al., 1999). When limestone weathers, the clay contained in the rocks …
Geochemistry of red residua
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WebAug 13, 2014 · An understanding of the processes that control the behavior of major elements with respect to weathering profile is essential to calculate the mobility, … WebJan 15, 2004 · This study has revealed material sources of the Pingba red residua developed on the Triassic dolomite on the Yunnan-Guizhou Plateau and its formation …
WebJ.H.ngbing; Wang Shijie; Ouyang Ziyuan; Zhang Shen; Sun Chenxing; Liu Xiuming; Zhou Dequan 2004: Geochemistry of red residua underlying dolomites in karst terrains of Yunnan-Guizhou Plateau; II, The mobility of rare earth elements during weathering Chemical Geology 203(1-2): 29-50 WebMay 1, 2013 · The acid-insoluble residues of carbonate rock underlying the red residua has Rb/Sr ratio at 2.86 and 87 Sr/ 86 Sr ratio 0.747332 (Ji and Wang, 2008), much higher than both ratios of the red residua (Rb/Sr = 1.49–2.25, 87 Sr/ 86 Sr = 0.720657–0.726073). We have also measured one sample of acid-insoluble residues from the dissolution of the ...
WebApr 6, 2024 · We also observed that the geochemistry of As differed from that of other HMs. The element As was found to be present in soils as As(III) and As(V) in epigenetic environments, and was more prone to forming arsenates and arsenites. ... S.J.; Ouyang, Z.Y. Geochemistry of red residua underlying dolomites in karst terrains of … http://en.cgsjournals.com/article/doi/10.12029/gc20240221
WebGeochemistry of red residua underlying dolomites in karst terrains of Yunnan-Guizhou Plateau: II. The mobility of rare earth elements during weathering Ji Hongbing, Wang …
WebJul 8, 2016 · This paper reports a geochemical study on the mineralogy and major elements of mid-ridge (A), near mountaintop (B), and valley (C) profiles developed in the Lower Cambrian black shale in Northeast Chongqing, China. The primary objective was to understand the elemental mobility, mineralogical transformation, and weathering … blessed sacrament 2023 lenten scheduleWebJan 15, 2004 · The purpose of this paper is to investigate REE in the red residua underlying dolomite rocks under warm–humid subtropical climatic conditions in upland of karst terrains, Guizhou Province. Emphasis is given particularly to the REE geochemical behaviors during chemical weathering/soil formation, and fractionation and enrichment mechanism in ... freddie mac and asset depletionWebJul 4, 2024 · According to field geological investigation and biogeochemical studies of trace elements in calcareous soils (Song et al. 2006; Song 2006 ), the parent rock of the … freddie mac 2-1 buydownWebFeb 21, 2024 · [44] Ji H, Wang S, Ouyang Z, Zhang S, Sun C, Liu X and Zhou D 2004 Geochemistry of red residua underlying dolomites in karst terrains of Yunnan-Guizhou Plateau Chem. Geol. 203 1–27. Crossref Google Scholar [45] Nachtergaele F, van Velthuizen H, Batjes N H and Fischer G 2009 The harmonized world soil database p 42. … blessed sacrament catholic church burton miWebJan 1, 2024 · Five steps to construct a geochemical gene are illustrated and 7 geochemical genes have been constructed at present as lithogenes of LG01, LG02, and LG03, … blessed sacrament catholic church greenbushWebDec 22, 2006 · Table 2 The mean concentrations of dissolved REE in different river waters (ng/l) Full size table. Furthermore, the pH of these three rivers vary from 7.6 to 8.4, … blessed sacrament catholic church labuanWebDec 20, 2024 · Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550 002, China. 2. ... Dequan Z 2004 Geochemistry of red residua underlying. dolomites in karst terrains of Yunnan ... freddie mac and credit smart