Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China

Ma, Jinlong; Wei, Gangjian; Xu, Yi–Gang; Long, Wen-Guo; Sun, Weidong

doi:10.1016/j.gca.2007.03.035

Cited by 262 publications

(131 citation statements)

References 49 publications

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“…Although De Carlo et al (1998), Bau (1999), and Ohta and Kawabe (2001) reported that there is a close relationship between Ce and Fe and Mn in the weathered systems, Ce at Kanigorgeh displays a good correlation only with Mn (r = 0.85), indicating the role of Mn-oxides in fixation of this element. This high correlation coefficient also shows that, analogous to Ce, the variation in redox potential is a key factor for distribution of Mn in this profile (Ma et al, 2007). The existence of a strong and positive correlation between Mn and REE (r = 0.71 to 0.98) may also indicate the effective role of Mn-oxides in concentration of REEs at Kanigorgeh.…”

Section: Mineral Controls On the Ree Distributionmentioning

confidence: 60%

REE geochemical characteristics of titanium-rich bauxites: the Permian Kanigorgeh horizon, NW Iran

Abedini

Calagari²

2014

Turkish J Earth Sci

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IntroductionBauxite deposits are formed by alteration and weathering of parent rocks rich in alumino-silicate minerals. These residual deposits are developed principally in tropical to subtropical climatic conditions with annual rainfall exceeding 1.2 m and an average temperature of >22 °C (Bardossy and Aleva, 1990;Mondillo et al., 2011). According to Bardossy and Combes (1999), these deposits are characterized into 3 major groups: lateritic bauxite deposits, karst bauxite deposits, and Tikhvin-type bauxite deposits. The first group is the product of in situ and direct chemical weathering of alumino-silicate rocks lying beneath the surface. The second group is developed on the surface of more or less karstified carbonates (limestone and dolomite) and scarce marls. The third group is formed on the surface of eroded alumino-silicate rocks and is the erosional product of lateritic bauxite deposits. Bardossy (1982), based upon parameters such as morphology and chemical compositions, classified the bauxite deposits into 6 distinct groups: Mediterranean type, Kazakhstan type, Timan type, Salento type, Tulsk type, and Ariege type. Based upon geographical situations, these deposits occurred in 7 belts throughout the world: the northern Mediterranean coast, Caribbean basin, Urals-Siberia-Central Asia, East Asia, Irano-Himalaya, Southwest Pacific, and North America.During the last few decades, geochemical investigations proved to have practical applications for determination of various aspects of formation and evolution of bauxite deposits such as the type of parent rocks; the roles of diagenetic, epigenetic, and supergene processes in connection to ore-forming mechanisms; physicochemical conditions of the environment of the ore formation (e.g., pH, Eh, intensity of draining, and climate); the mineral controls on distribution, mobilization, and fractionation of elements [particularly trace and rare earth elements (REEs)] in the course of bauxitization; and tectonometamorphic evolutions (Özlü,

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Section: Mineral Controls On the Ree Distributionmentioning

confidence: 60%

REE geochemical characteristics of titanium-rich bauxites: the Permian Kanigorgeh horizon, NW Iran

Abedini

Calagari²

2014

Turkish J Earth Sci

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“…Bulk-rock analyses for major and trace elements were carried out in the State Key Lab of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. Major elements were obtained by wavelength-dispersive X-ray fluorescence (XRF) spectrometry, following the procedure described by previous authors Ma et al 2007;Liang et al 2009a;Liu et al 2010). Analytical errors were less than 2%.…”

Section: Methodsmentioning

confidence: 99%

High Oxygen Fugacity and Slab Melting Linked to Cu Mineralization: Evidence from Dexing Porphyry Copper Deposits, Southeastern China

Zhang

Ling

Liu

et al. 2013

The Journal of Geology

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111

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“…Analyses of major and trace elements were performed at the State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. Major elements were determined by Rigaku 100e XRF, with analytical precisions better than 1% for major elements (Ma et al 2007). Trace elements were analyzed by Perkin-Elmer ELAN 6000 ICP-MS with the solution method or by Agilent 7500a ICP-MS coupled with a RESOlution M-50 laser ablation using glass fusion method (Liang et al 2009;Tu et al 2011).…”

Section: Major and Trace Elements Zircon And U-pb Datingmentioning

confidence: 99%

Destruction of the North China Craton Induced by Ridge Subductions

Ling

Li²,

Ding

et al. 2013

The Journal of Geology

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A B S T R A C TThe destruction of the North China Craton (NCC) mainly occurred in the Cretaceous and has been attributed to a "top-down" rapid delamination, "bottom-up" long-term thermal/chemical erosions, or hydration by subductionreleased fluids. On the basis of the distribution of one Jurassic and two Early Cretaceous adakite belts and the drifting history of the paleo-Pacific Plate, we propose that three ridge subduction events dominated the large-scale decratonization in the NCC. Both physical erosion and magmatism induced by ridge subduction contributed to the destruction of the NCC; the last ridge subduction, at Ma, was the key driving force in the final destruction. We present 130 ‫ע‬ 5 mineralogical, geochemical, and isotopic data in support of the ridge subduction model: flat subduction of a spreading ridge resulted in stronger physical erosion on the thick lithosphere mantle of the NCC. Consequently, slab melting occurred during ridge subduction, forming adakites with mantle Mg isotope compositions, followed by A-type granites as a result of asthenosphere upwelling. Delaminated lower continental crust was also partially melted after reacting with hydrous magmas, as indicated by eclogite xenoliths, resulting in a zircon age spectrum similar to that of the NCC and some adakitic samples with chemical characteristics similar to those of the Dabie adakites. The final decratonization was triggered by the last ridge subduction, with both physical erosion (flat subduction) and thermal erosion (adakitic and A-type magmatisms). Given that ridge subduction has occurred throughout Earth's history, the associated decratonization processes are presumably a common phenomenon that modified the chemical compositions of the continental crust.

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Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China

Cited by 262 publications

References 49 publications

REE geochemical characteristics of titanium-rich bauxites: the Permian Kanigorgeh horizon, NW Iran

REE geochemical characteristics of titanium-rich bauxites: the Permian Kanigorgeh horizon, NW Iran

High Oxygen Fugacity and Slab Melting Linked to Cu Mineralization: Evidence from Dexing Porphyry Copper Deposits, Southeastern China

Destruction of the North China Craton Induced by Ridge Subductions

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