Results 41 to 50 of about 571,249 (212)

The Influence of Magma Mixing on the Composition of Andesite Magmas and Silicic Eruption Style

Geophysical Research Letters, 2020
AbstractAlthough inhibited on established fluid mechanical grounds, extensive magma mixing can play a critical role in creating andesite magmas at volcanic arcs and triggering effusive or explosive volcanism. We use analog experiments, scaling theory, and thermodynamic modeling of natural volcanic systems to show that mechanical mixing is enhanced if ...
K. F. Hodge, A. M. Jellinek
openaire   +1 more source

Integrative Genomic and Functional Investigation of the Multi‐Layered Genetic Architecture Between Anorexia Nervosa and Bone Loss

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Bone loss is a severe and often irreversible complication of anorexia nervosa (AN), yet the genetic mechanisms underlying this comorbidity remain underexplored. This study focuses on constructing a comprehensive genetic architecture between AN and estimated calcaneal bone mineral density (eBMD).
Tao Han, Yuke Wang, Yixiong Dang, Rong Xiang, Yan Zeng, Sheng He, Ye Ju, Zilan Chen, Ting Liu, Zihao Li, Yuqi Pang, Wanyi Tan, Jue Xu, Jingwen Jiang, Xia Jiang   +14 more
wiley   +1 more source

Convergence and Residual Error Analysis of Unsteady MHD Stagnation Flow Over a Cylindrical Surface With Streamline and Isotherm Visualization

Energy Science &Engineering, EarlyView.
The novelty of the current study is that the unsteady MHD Cross nanofluid model is, for the first time, coupled with the melting heat transfer at the stagnation point over a horizontally extended cylinder in a Darcy–Forchheimer porous medium. This work connects complex rheological behaviors and phase‐change phenomena in a unique way, with the only ...
Fahad Maqbul Alamrani, Ebrahem A. Algehyne, Mounirah Areshi, Muhammad Bilal, Mustafa Bayram, Jihad Younis, Anwar Saeed   +6 more
wiley   +1 more source

Voluminous magma formation for the 30-ka Aira caldera-forming eruption in SW Japan: contributions of crust-derived felsic and mafic magmas

Frontiers in Earth Science
Understanding the origin, assembly, and evolution of voluminous magma that erupts in catastrophic caldera-forming eruptions (CCFEs) is a community imperative. A CCFE of the Aira caldera at 30 ka discharged over 350 km3 of magma, which can be grouped into
Ayumu Nishihara, Ayumu Nishihara, Ayumu Nishihara, Yoshiyuki Tatsumi, Katsuya Kaneko, Jun-Ichi Kimura, Qing Chang, Nobuo Geshi, Takashi Miyazaki, Bogdan Stefanov Vaglarov, Hironobu Hinata, Keiko Suzuki-Kamata   +11 more
doaj   +1 more source

Replacement of Ores Recorded by Textures and Chemical Compositions of Sphalerite: An Example From the Furutobe Kuroko Deposit, Akita, Japan

Geological Journal, EarlyView.
Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo, Hinako Sato   +4 more
wiley   +1 more source

The Capability of Amphibole in Tracing the Physicochemical Processes of Magma Mixing

Geophysical Research Letters
This study explores the capability of amphibole in tracing the physicochemical process of magma mixing through spatially associated gabbros, mafic microgranular enclaves (MMEs) and granodiorites from central Tibet.
Mingjian Li, Yunchuan Zeng, Massimo Tiepolo, Jifeng Xu, Enrico Cannaò, Francesca Forni, Feng Huang   +6 more
doaj   +1 more source

Oxidation during magma mixing recorded by symplectites at Kusatsu–Shirane Volcano, Central Japan

Earth, Planets and Space, 2020
Kusatsu–Shirane Volcano is an active Quaternary andesitic-to-dacitic volcano located in the Central Japan Arc. We conducted a detailed petrological investigation of orthopyroxene (opx)–magnetite (mt) symplectites associated with olivine in the Sessho ...
Kenta Ueki, Mutsuko Inui, Kenta Matsunaga, Naoya Okamoto, Kazuki Oshio   +4 more
doaj   +1 more source

Correlated petrology and seismicity indicate rapid magma accumulation prior to eruption of Kizimen volcano, Kamchatka

Communications Earth & Environment, 2022
Rapid magma mixing and destabilization prior to eruption can be recorded by correlating timescales of crystal diffusion and seismicity, according to a petrological study of Kizimen volcano ...
Lea Ostorero, Hélène Balcone-Boissard, Georges Boudon, Nikolai M. Shapiro, Alexander Belousov, Marina Belousova, Andreas Auer, Sergey L. Senyukov, Svetlana Ya. Droznina   +8 more
doaj   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source