Article
Geochemistry & Geophysics
Xiao Bian, Yuping Su, Jianping Zheng, Qing Xiong, Xiang Zhou, Hongkun Dai, Abing Lin, Jian Wang, Liang Zhou
Summary: Peridotite xenoliths from the northern North China Craton exhibit lithological and chemical heterogeneity, likely related to mantle accretion and metasomatism, providing insights into the evolution of the lithospheric mantle beneath the region.
Article
Spectroscopy
Igor S. Sharygin, Alexander Golovin, Alexey A. Tarasov, Anna M. Dymshits, Elizaveta Kovaleva
Summary: Identifying the composition of primary/primitive mantle melts by studying melt inclusions in mantle xenoliths provides key information about mantle evolution and magmatism. This study characterized mineral assemblages of unexposed crystallized secondary melt inclusions in olivine from the sheared garnet peridotites, suggesting an alkali-rich carbonate melt origin at depths greater than 150 km, genetically related to the kimberlite magmatism that formed the Bultfontein pipe.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Multidisciplinary Sciences
Ilya N. Bindeman, Dmitri A. Ionov, Peter M. E. Tollan, Alexander V. Golovin
Summary: The study focuses on the oxygen isotopic ratios in the mantle, revealing a subtle but significant decrease in δ O-18 in the shallow continental lithospheric mantle, which may be related to plate tectonics and subduction.
NATURE COMMUNICATIONS
(2022)
Review
Geosciences, Multidisciplinary
Yanjie Tang, Jifeng Ying, Yuepeng Zhao, Xinrang Xu
Summary: The mantle lithosphere beneath the North China Craton underwent significant transformations from the Paleozoic to the Cenozoic, with changes in thickness, composition, and isotopic signature. The destruction of the craton was influenced by Paleozoic subductions and Mesozoic dynamic processes like mechanical intrusion, melt fluid erosion, and local delamination, leading to lithospheric thinning and extension.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Francisco E. Apen, Roberta L. Rudnick, Dmitri A. Ionov, John M. Cottle, Jean-Francois Moyen, Alexander Golovin, Andrey Korsakov
Summary: Coupled U-Pb and trace-element analyses of crustal xenoliths from the Siberian craton reveal the temperature and heat production of the lower crust during kimberlite eruption. The study shows that the U-Pb dates of rutile and apatite in the lower-crustal garnet granulites extend from 1.8 billion years to 360 million years, contrasting with the solely Paleoproterozoic apatite found in upper-crustal tonalites and amphibolites. The data suggest that the lower crust experienced neocrystallization and re-heating less than 1 million years before the eruption, indicating a cooler long-term ambient lower-crustal temperature. The xenolith data imply low crustal heat production for the Siberian craton but also suggest that the surface heat flow measurements may be inaccurate.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geochemistry & Geophysics
Alla M. Logvinova, Igor S. Sharygin
Summary: Potassium sulfide KFeS2 (hanswilkeite) was found in polymineralic inclusions in a diamond from the Udachnaya kimberlite pipe. It is the second occurrence of hanswilkeite in nature and the first in mantle-derived samples. The crystal structure of sulfide KFeS2 is monoclinic, with chains of [FeS2] frameworks connected by edges. The discovery of hanswilkeite and other rare minerals in the diamond inclusion supports the role of metasomatic processes in diamond formation.
Article
Geochemistry & Geophysics
Yao Xu, Hong-Fu Zhang, A-Bing Lin
Summary: This study investigates the composition and isotopic composition of xenoliths from central North China Craton, providing insights into the effects of plate subduction on the ancient lithospheric mantle. The results show that the central North China Craton has undergone multistage mantle metasomatism, with recent influxes of asthenospheric melts playing a critical role.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2022)
Article
Geochemistry & Geophysics
Andres Sandoval-Velasquez, Andrea Luca Rizzo, Maria Luce Frezzotti, Ricardo Saucedo, Alessandro Aiuppa
Summary: The isotopic characterization of fluid inclusions in mantle xenoliths from Central Mexico reveals a complex evolution history, including mixing of atmospheric fluids and mantle materials, accompanied by different metasomatic and refertilization processes.
Article
Geochemistry & Geophysics
Xiao Bian, Yuping Su, Jianping Zheng, Qing Xiong, Hongkun Dai, Xiang Zhou, Xi Chen, Liang Zhou, Jian Wang
Summary: This study investigates the effects of heating, melts/fluids, and tectonic stress on the circumcratonic mantle using peridotite xenoliths from the northwestern Tarim Craton. It reveals the complex geochemical signatures and provides insights into the formation and evolution of the mantle in response to plume and convergent events. The study emphasizes the interactions between different dynamic events and their cumulative effects on the mantle evolution.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Geosciences, Multidisciplinary
N. S. Tychkov, A. M. Agashev, N. P. Pokhilenko
Summary: Comprehensive studies of peridotitic xenoliths from the Udachnaya kimberlite in the Siberian craton show an inverse correlation between garnet percentage and Cr2O3 contents in refertilizated peridotites. The modeling of composition changes in these peridotites reveals that garnet percentages are directly proportional to clinopyroxene and inversely proportional to olivine. The average refertilization degree of lithospheric mantle in the region is estimated from more than 800 garnet xenocrysts in the Udachnaya kimberlite.
DOKLADY EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Xianquan Ping, Xiangli Wang, Jianping Zheng, Yongsheng Liu, Yuping Su, Haihong Chen, Ying Wei, Hongkun Dai, Lei Ai
Summary: The stable chromium isotope composition of Earth's mantle is heterogeneous, with peridotites and basalts being similar to the Bulk Silicate Earth, while pyroxenites and chromitites have lighter and heavier isotopic compositions, respectively. This suggests the presence of a complementary light chromium isotope reservoir in the mantle.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Yumi Kitayama, Emilie Thomassot, Albert Galy, Andrey Korsakov, Alexander Golovin, Elisabeth d'Eyrames
Summary: Chloride-carbonate nodules in kimberlites are important constituents that represent snapshots of the latest stage liquid in the kimberlite system, with isotopic compositions consistent with their host kimberlites. The study suggests the presence of a recycled component with high Rb/Sr in the mantle sampled by some kimberlites.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
A. G. Dessai, A. Viegas, W. L. Griffin
Summary: The study conducted detailed petrographic analysis of the mantle beneath the Western Dharwar Craton of the Indian shield, revealing changes in the thermal architecture and the reactivation of the ancient craton lithosphere during the Cenozoic. The thermal high, thinned continental lithosphere, and replacement of ancient lithosphere by non-cratonic mantle and magmatic accretions by the end of the Palaeocene in the Western Dharwar Craton signify a decratonization process.
Article
Multidisciplinary Sciences
Sonja Aulbach, Thomas Stachel
Summary: A study shows that eclogitic minerals trapped in the mantle beneath continents billions of years ago have remained in a stable redox state, as evidenced by the lack of change in minerals found inside ancient diamonds. This suggests that eclogite, a type of rock formed through subduction, is an efficient system for maintaining oxygen balance over long periods of time. It also highlights the importance of eclogite as a source rock for diamonds.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Wan-Feng Zhang, Xiao-Ping Xia, Sato Yuto, Takahashi Eiichi, Ze-Xian Cui, Yan-Qiang Zhang, Qing Yang, Ya-Nan Yang, Li Li, Yi-Gang Xu
Summary: Secondary ion mass spectrometry (SIMS) is a powerful technique for measuring trace amounts of water in minerals. The matrix effect caused by the substrate's structure and chemistry highlights the importance of using reference materials with similar properties for calibration. This study investigates newly developed reference materials for SIMS water content analysis and confirms their suitability for use as reference materials.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)