A5100418391- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geochemistry and Elemental Analysis
- Geochemistry and Geologic Mapping
- Paleontology and Stratigraphy of Fossils
- Nuclear materials and radiation effects
- Seismic Waves and Analysis
- Radioactive element chemistry and processing
- Coal Properties and Utilization
- Seismic Imaging and Inversion Techniques
- Geochemistry and Geochronology of Asian Mineral Deposits
- Geology and Paleoclimatology Research
- Seismology and Earthquake Studies
- Metal Extraction and Bioleaching
- Geological Modeling and Analysis
- Mineralogy and Gemology Studies
- Coal and Its By-products
- Arsenic contamination and mitigation
- Heavy metals in environment
Chinese Academy of Sciences
2015-2025
Guangzhou Institute of Geochemistry
2020-2025
China University of Geosciences
2025
Institute of Geology and Geophysics
2015-2021
University of Chinese Academy of Sciences
2015-2021
Institute of Geochemistry
2021
Rice University
2020
Shell (Netherlands)
2019
Research Center for Eco-Environmental Sciences
2016
Cornell University
2013
Abstract A new data compilation shows that in intermediate to felsic rocks, zircon Eu/Eu* [chondrite normalized Eu/ ] correlates with whole rock La/Yb, which has been be used infer crustal thickness. The resultant positive correlation between and thickness can explained by two processes favored during high-pressure differentiation: (1) supression of plagioclase (2) endogenic oxidation Eu2+ due garnet fractionation. Here we calibrate a proxy based on Eu anomalies zircons. Eu/Eu*-in-zircon...
Abstract We present petrological investigations and mineral chemistry of several Tethyan ophiolites to reveal the occurrence, origin, fate water in podiform chromitites. The results show that clinopyroxene olivine chromitites have H2O contents 801–366 53–17 ppm, respectively. highest occur massive chromitite lowest always clinopyroxene-bearing ores because much available hydrous fluids was taken up by during crystallization. major trace elemental Li isotopic compositions associated with...
Abstract Wangyanite (IMA2024-008a), ideally PdNi8S8, is a Pd end-member mineral of the pentlandite group that was discovered in J-M reef Stillwater Complex, Montana, USA. occurs as anhedral-subhedral granular crystals 200–400 µm size, associated with isoferroplatinum, braggite, pentlandite, and chalcopyrite interstitial to plagioclase grains within anorthosite. exhibits yellowish brown color black streak metallic luster. It brittle uneven fractures, has calculated density 5.14 g/cm3. The...
Abstract The southern Puna Plateau has been proposed to result from a major Pliocene delamination event that previously inferred geochemical, geological, and some preliminary geophysical data. Seventy‐five seismic stations were deployed across the in 2007–2009 by scientists U.S., Germany, Chile, Argentina test model for region. passive located between 25 28°S. Using waveform data collected PUNA experiment, we employ attenuation tomography methods resolve both compressional shear quality...
Understanding melt penetration in ophiolites is important revealing the formation and evolution of oceanic lithosphere, as well chromite deposits. We conducted situ Li isotope analysis olivine grains from harzburgite, podiform chromitite dunite envelope mantle sequence, wehrlite cumulates crustal sequence Pozantı-Karsantı ophiolite. Olivine different rocks has variable distinctive concentrations (0·95 to 2·01 ppm) δ7Li isotopic compositions (-5·43 16·65 ‰). The refractory harzburgite...
Abstract Fractional crystallization of Fe–Ti oxides can induce detectable Mg isotopic changes during late-stage basalt differentiation. Because chromite and olivine are early crystallizing phases basaltic melt differentiation, the effect on fractionation isotopes early-stage differentiation is still poorly understood. Here, we examine possibility induced isotope with a study chromite–olivine pairs in dunites chromitites collected from major types intrusive rock suites formed by fractional...
Abstract A number of bulk‐rock and mineral Fe Mg isotope data have been increasingly reported from ophiolitic rocks, but their anomalous fractionations are still not well addressed. This study presents new Fe, Mg, O isotopes published Li olivine and/or chromite in chromitite, dunite, harzburgite the Pozantı‐Karsantı ophiolite (southern Turkey) to reveal mechanisms inter‐ intra‐mineral fractionation during chromitite formation. In studied samples, both highly variable δ 56 ranging −0.125‰...
Abstract The Co, Mn, Fe, and Ni contents of olivine phenocrysts host basalts are sensitive to source mantle lithology, which suggests they may be used constrain the processes melting identify formed from non-peridotitic (i.e. pyroxenitic) sources. Here, we use a new comprehensive, forward model involving multiple parameters simulate partitioning Co Mn during partial in different tectonic settings: (1) polybaric continuous peridotite mid-ocean ridges can generate melts that show decreasing...
Abstract Although a mantle origin of carbonatites has long been advocated, few carbonatite bodies with crustal fingerprints have identified. The Eppawala in Sri Lanka are more similar to orogenic than those formed stable cratons and within plate rifts. They occur the Pan-African belt formation age ca. 475 Ma newly obtained this study no contemporary mantle-related magmatism. These higher (87Sr/86Sr)i ratios (0·70479–0·70524) enriched Nd Hf isotopic compositions reported other parts world....
We conducted petrological and mineral chemistry investigations of Cr-spinel in ultramafic rocks the Yanmenguan mafic–ultramafic complex North China Craton. The grains occur as inclusions enstatite, tschermakite, phlogopite, olivine, or interstitial among aforementioned silicate minerals, show concentric asymmetrical textures. Back-scattered electron elemental images compositional profiles spinel indicate presence Cr- Fe-rich cores Al- Mg-rich rims. host minerals display a decrease Al Mg...