Results 51 to 60 of about 799 (197)

Geochemistry of elements associated with Late Permian coal in the Zhongliangshan mine, Chongqing, Southwest China

Energy Exploration & Exploitation, 2018
The enrichment and geochemical significance of elements associated with Late Permian coals in Southwest China have always gained widespread interest in the field of coal geology.
Shenjun Qin, Qingfeng Lu, Kang Gao, Penghui Bo, Shihao Wu   +4 more
doaj   +1 more source

Extremely reducing conditions reached during basaltic intrusion in organic matter-bearing sediments [PDF]

, 2012
International audienceRedox conditions in magma are widely interpreted as internally buffered and closely related to that of their mantle source regions.
Arndt, Nicholas, Gaillard, Fabrice, Iacono-Marziano, Giada, Marecal, Virginie, Pirre, Michel, Polozov, Alexander G., Scaillet, Bruno   +6 more
core   +3 more sources

Tectonic Settings of Magmatic Sulfide Deposits in China [PDF]

, 2002
published_or_final_versio
Keays, RR, Lesher, CM, Song, X, Zhou, MF
core  

Palaeogeothermal response and record of the effusing of Emeishan basalts in the Sichuan basin

Chinese Science Bulletin, 2009
Thermal history of the Sichuan basin is reconstructed based on vitrinite reflectance from boreholes in the basin using a paleo-heat flow method. The results show that the Sichuan basin experienced a relatively low heat flow period in the Early Paleozoic, and an elevated paleo-heat flow, ranging 60∼80 mW/m2 with a maximum as high as 100 mW/m2 around 259
ChuanQing Zhu, Ming Xu, YuSong Yuan, YongQing Zhao, JingNan Shan, ZhiGuo He, YunTao Tian, ShengBiao Hu   +7 more
openaire   +1 more source

Chemical heterogeneity of the Emeishan mantle plume: Evidence from highly siderophile element abundances in picrites [PDF]

, 2013
Highly magnesian lavas or picrites have the potential to preserve important information about the origin and thermochemical state of the mantle source(s) of large igneous provinces.
Ali, Amosse, Barnes, Becker, Bennett, Bezos, Boven, Brandon, Brandon, Brenan, Brenan, Bryan, Campbell, Campbell, Capobianco, Charlier, Chazey Iii, Chen, Chung, Coffin, Cohen, Creaser, Dale, Danyushevsky, Ely, Esser, Fan, Fiorentini, Frost, Hanski, Hanski, He, He, Herzberg, Herzberg, Ireland, Ireland, Jakobsen, Jakobsen, Jamais, Lassiter, Li, Li, Li, Lo, Maier, McDonough, McHone, Meisel, Momme, Momme, Momme, Norman, Pearson, Pitcher, Polat, Puchtel, Puchtel, Puchtel, Puchtel, Puchtel, Puchtel, Putirka, Putirka, Qi, Rehkamper, Richards, Righter, Shellnutt, Shellnutt, Shirey, Shirey, Song, Sun, Sun, Utskins-Peate, Volkening, Walker, Walker, Wang, Wang, Wang, Wang, Xiao, Xu, Xu, Zhang, Zhang, Zhang, Zhong, Zhong, Zhou, Zhou   +92 more
core   +2 more sources

Numerical Modeling of Purely Active (Plume‐Produced) Continental Rifting and Break‐Up

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract In contrast to the traditional mechanism of passive continental rifting (driven by far‐field tectonic forces), the active rifting‐to‐break‐up processes (caused by rising mantle plumes) are still poorly understood. However, most episodes of fragmentation of the last supercontinent Pangea were relatively shortly preceded (within ∼10 Myr) by the ...
Alexander Koptev, Alessio Lavecchia, Sierd Cloetingh, Michaël Pons, Enrico Marzotto, Sascha Brune, István Kovács, Magdala Tesauro, Fred Beekman, Qin Wang, Stephan V. Sobolev, Claudio Faccenna, Laurent Jolivet   +12 more
wiley   +1 more source

Anatomy of the Emeishan Mantle Plume Head: Insights From New Geochronologic, Geochemical, and Geologic Data

Geochemistry, Geophysics, Geosystems
The link between mantle plumes and the formation of large igneous provinces (LIPs) is well established although the anatomy of these remains equivocal. Recent experimental studies and geophysical data suggest that the mantle plume head is more likely to ...
Hongbo Li, Zhaochong Zhang, Ran Liu, Marc K. Reichow, Jiang Zhu, Richard Ernst, M. Santosh, Wei Wang, Changquan Li, Botong Li   +9 more
doaj   +1 more source

Source of Ore Forming Materials in Huize Super-Large Pb-Zn Deposit: Evidence from S, Pb and Fe Isotopes

Taiyuan Ligong Daxue xuebao
[Purposes] The ore concentration area in northeast Yunnan is an important part of the Sichuan-Yunnan-Guizhou polymetallic metallogenic domain. Even in the extensively studied Huize Pb-Zn deposit in the area, the source of ore-forming materials is still ...
ZHANG Yan, HAN Runsheng, WANG Lei, WEI Pingtang   +3 more
doaj   +1 more source

Humps in κ‐T Curves: Evidence for the Stable Single‐Domain to Superparamagnetic Transition in Magnetite

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Thermomagnetic susceptibility (κ‐T) curves are used widely for magneto‐mineralogical analysis. Humps in heating curves below the Curie temperature of magnetite are observed frequently. We present κ‐T curves with hump features in magnetite‐bearing flood basalt samples.
Qi Zhang, Erwin Appel, Tao Yang, Michaela Wilsch‐Bräuninger, Nathani Basavaiah, Shouyun Hu   +5 more
wiley   +1 more source

Viscosity of Dry and Hydrous Diopside Melts at High Pressures: Implications for Upper Mantle Magma Dynamics

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Viscosity of silicate melts governs magma transport and influences mantle dynamics, yet effects of pressure and water on melt viscosity remain poorly understood. Here, we report in situ falling‐sphere viscosity measurements on diopside (Di) melts with 0–3 wt.% H2O along the liquidus up to 7 GPa and 2103 K using synchrotron X‐ray radiography ...
Qi Chen, Bin Zhao, Tony Yu, Aaron Wolfgang Ashley, Yanbin Wang   +4 more
wiley   +1 more source