Search results for: Gang-Jian Wei

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article

Boron isotopes reveal multiple metasomatic events in the mantle beneath the eastern North China Craton

Hong-Yan Li, Zhou Zhou, Jeffrey G. Ryan, Gang-Jian Wei, more

Geochimica et Cosmochimica Acta > 2016 > 194 > C > 77-90

Linkages inferred between the geochemical heterogeneity of the mantle beneath eastern Eurasia and the stagnant Pacific slab documented geophysically in its mantle transition zone are as yet not clearly characterized. In this paper we report new elemental and isotopic data for boron (B) on a suite of well-characterized Cenozoic basalts (alkali basalts, basanites and nephelinites), with ocean island...

article

Molybdenum Mass Fractions and Isotopic Compositions of International Geological Reference Materials

Pei‐Pei Zhao, Jie Li, Le Zhang, Zhi‐Bing Wang, more

Geostandards and Geoanalytical Research > 40 > 2 > 217 - 226

The double‐spike method with multi‐collector inductively coupled plasma‐mass spectrometry was used to measure the Mo mass fractions and isotopic compositions of a set of geological reference materials including the mineral molybdenite, seawater, coral, as well as igneous and sedimentary rocks. The long‐term reproducibility of the Mo isotopic measurements, based on two‐year analyses of NIST SRM 3134...

article

Copper and iron isotope fractionation during weathering and pedogenesis: Insights from saprolite profiles

Sheng-Ao Liu, Fang-Zhen Teng, Shuguang Li, Gang-Jian Wei, more

Geochimica et Cosmochimica Acta > 2014 > 146 > C > 59-75

Iron and copper isotopes are useful tools to track redox transformation and biogeochemical cycling in natural environment. To study the relationships of stable Fe and Cu isotopic variations with redox regime and biological processes during weathering and pedogenesis, we carried out Fe and Cu isotope analyses for two sets of basalt weathering profiles (South Carolina, USA and Hainan Island, China),...

article

Adsorption- and desorption-controlled magnesium isotope fractionation during extreme weathering of basalt in Hainan Island, China

Kang-Jun Huang, Fang-Zhen Teng, Gang-Jian Wei, Jin-Long Ma, more

Earth and Planetary Science Letters > 2012 > 359-360 > Complete > 73-83

Magnesium isotopic compositions of a set of clay-rich saprolites developed on the Neogene tholeiitic basalt from Hainan Island in southern China have been measured in order to document the behavior of Mg isotopes during continental weathering. Compared with unaltered basalts (δ ²⁶ Mg=−0.36‰), the overlying saprolites are strongly depleted in Mg (i.e., τ _Th,Mg =−99.1% to −92.9%), and...

article

Heavy metal pollution recorded in Porites corals from Daya Bay, northern South China Sea

Tian-Ran Chen, Ke-Fu Yu, Shu Li, Gilbert J. Price, more

Marine Environmental Research > 2010 > 70 > 3-4 > 318-326

We examined metal-to-calcium ratios (Fe/Ca, Mn/Ca and Zn/Ca) in the growth bands of two Porites corals from Daya Bay, South China Sea, in order to trace long-term trends in local ambient pollution levels. Although Fe and Mn did not show any obvious increasing trends over 32 years in the period 1976–2007, peak values of Fe/Ca and Mn/Ca occurred in the mid-late 1980s, temporally-coeval with the local...

article

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

Jin-Long Ma, Gang-Jian Wei, Yi-Gang Xu, Wen-Guo Long, more

Geochimica et Cosmochimica Acta > 2007 > 71 > 13 > 3223-3237

Major, trace and organic elements of a laterite profile developed on Neogene basalts in northern Hainan Island, South China were reported in this paper, the aim of which was to investigate element mobilization and re-distribution during extreme weathering. The results indicate that most of the elements have been mobilized and transferred downwards along the profile by aqueous solution. Organic matter...

article

High-resolution benthic foraminifer δ13C records in the South China Sea during the last 150 ka

Gang-Jian Wei, Chi-Yue Huang, Chia-Chun Wang, Meng-Yan Lee, more

Marine Geology > 2006 > 232 > 3-4 > 227-235

High-resolution δ ¹³ C ratios of benthic foraminifer, Cibicidoides wuellerstorfi, in Core MD97-2151 from the southern South China Sea (SCS) and Core SO50-31KL from the northern SCS indicate deep-water variations in the SCS during the last 150 ka. The δ ¹³ C records of both show a general variation pattern with higher δ ¹³ C during interglacial periods than glacial periods,...

article

Mid–late Holocene monsoon climate retrieved from seasonal Sr/Ca and δ18O records of Porites lutea corals at Leizhou Peninsula, northern coast of South China Sea

Ke-Fu Yu, Jian-Xin Zhao, Gang-Jian Wei, Xin-Rong Cheng, more

Global and Planetary Change > 2005 > 47 > 2-4 > 301-316

South China Sea (SCS) is a major moisture source region, providing summer monsoon rainfall throughout Mainland China, which accounts for more than 80% total precipitation in the region. We report seasonal to monthly resolution Sr/Ca and δ ¹⁸ O data for five Holocene and one modern Porites corals, each covering a growth history of 9–13 years. The results reveal a general decreasing trend in...

article

δ18O, Sr/Ca and Mg/Ca records of Porites lutea corals from Leizhou Peninsula, northern South China Sea, and their applicability as paleoclimatic indicators

Ke-Fu Yu, Jian-Xin Zhao, Gang-Jian Wei, Xin-Rong Cheng, more

Palaeogeography, Palaeoclimatology, Palaeoecology > 2005 > 218 > 1-2 > 57-73

Combined seasonal to monthly resolution coral skeletal δ ¹⁸ O, Sr/Ca, and Mg/Ca records are reported for one modern and two late Holocene Porites lutea corals from a fringing reef at Leizhou Peninsula, the northern coast of the South China Sea (SCS). All the profiles for the period 1989–2000 reveal annual cycles well correlated with instrumental sea surface temperatures (SST), and display...

article

High-frequency winter cooling and reef coral mortality during the Holocene climatic optimum

Ke-Fu Yu, Jian-Xin Zhao, Tung-Sheng Liu, Gang-Jian Wei, more

Earth and Planetary Science Letters > 2004 > 224 > 1-2 > 143-155

A detailed ecological, micro-structural and skeletal Sr/Ca study of a 3.42 m thick Goniopora reef profile from an emerged Holocene reef terrace at the northern South China Sea reveals at least nine abrupt massive Goniopora stress and mortality events occurred in winter during the 7.0–7.5 thousand calendar years before present (cal. ka BP) (within the Holocene climatic optimum). Whilst calculated Sr/Ca-SST...

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Geochimica et Cosmochimica Acta (3)
Earth and Planetary Science Letters (2)
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Search results for: Gang-Jian Wei

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