Results 41 to 50 of about 370 (183)

Metallogenic Geological Characteristics and Genesis of the Rb-Sn Polymetallic Deposit in Mount Tiantang, Guangdong Province

Kuangchan zonghe liyong, 2022
Tiantangshan Rb-Sn polymetallic deposit in Guangdong Province is located at the intersection of the southern part of the NNE trending Wuyishan polymetallic metallogenic belt and the eastern end of the Nanling latitudinal polymetallic metallogenic belt ...
Tiesheng Liu, Wenhui Chen, Xiangkuan Huang, Yunjiang Cao, Shun Ye, Yanming Zhao   +5 more
doaj   +1 more source

Progressive carbonation and Ca-metasomatism of serpentinized ultramafic rocks: insights from natural occurrences and hydrothermal experiments [PDF]

, 2023
Nomuulin Amarbayar, Otgonbayar Dandar, Jiajie Wang, Atsushi Okamoto, Masaoki Uno, Undarmaa Batsaikhan, Hideko Takayanagi, Yasufumi Iryu, Noriyoshi Tsuchiya   +8 more
openalex   +1 more source

The Mg‐Fe Isotope Compositions and Geochemical Effects of Supercritical Fluids: Constraints From an Ultrahigh‐Pressure Eclogite‐Vein System in the Dabie Orogen

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract Supercritical fluids are ideal media for mass transfer from the subducting slab into the mantle wedge. However, little is known about the Mg‐Fe isotope compositions of supercritical fluids in subduction zones. Here, we present the Mg‐Fe isotope data for a coesite‐bearing eclogite‐vein system, which is closely associated with supercritical ...
Tie‐Nan Chen, Ren‐Xu Chen, Yong‐Fei Zheng, Zheng‐Hua Pan, Guo‐Chao Sun, Xue‐Jing Gan   +5 more
wiley   +1 more source

Sassolite Precipitation at the Restless Campi Flegrei Volcano in Italy Points to Hydrothermal Flashing by Deep Boron‐Rich Brines

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract Studying the behavior of dormant volcanoes is a major challenge in volcanology. Here, we conducted a 10‐year survey of hydrothermal mineralization at Campi Flegrei, an active volcano near Naples in Italy, which last erupted in 1538. Our survey revealed a significant output of boric acid at the hydrothermal sulfate discharge area of Pisciarelli,
M. Piochi, A. Mormone, G. Solomita, R. Moretti   +3 more
wiley   +1 more source

Hydrothermal alteration in the lower part of an early Proterozoic greenstone complex at Palovaara, Enontekiö, northwestern Finland [PDF]

Bulletin of the Geological Society of Finland, 1988
The lower part of the early Proterozoic greenstone complex at Palovaara, northwestern Finnish Lapland, comprises a quartzite formation overlain by intermediate and felsic tuffs and tuffites with some lava flows, mostly intermediate in chemical ...
P. Eilu, H. Idman
doaj   +1 more source

Accessory minerals: a provenancing tool for steatite quarries

Archaeometry, Volume 67, Issue 5, Page 1212-1229, October 2025.
Abstract Steatite has been a widely traded material across a range of archaeological contexts. Yet, challenges inherent to determining its provenance limits our understanding of the networks and mechanisms of its exchange. We present a robust new accessory mineral provenancing “fingerprint” method based their specific growth history.
Riia Chmielowski, Kamal Badreshany, Karen Milek   +2 more
wiley   +1 more source

Phanerozoic Onset of Massive Continental Weathering

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Continental weathering acts as a nexus of global biogeochemical cycles yet its long‐term evolution remains unclear. Here we show that continental weathering may not have operated on a massive scale until the early Paleozoic based on a large‐number data compilation of mudstone geochemistry.
Shenghui Ouyang, Junfeng Ji, Chao Li, Benjamin J. W. Mills, Guang‐Yi Wei, David W. Hedding, Gaojun Li   +6 more
wiley   +1 more source

Genesis and reservoir preservation mechanism of 10 000‐m ultradeep dolomite in Chinese craton basin

Deep Underground Science and Engineering, Volume 4, Issue 3, Page 354-381, September 2025.
Potential exploration target stratum of 10 000‐m ultradeep dolomite in Sichuan Basin and Tarim Basin, China. Abstract The 10 000‐m ultradeep dolomite reservoir holds significant potential as a successor field for future oil and gas exploration in China's marine craton basin.
Guangyou Zhu, Xi Li, Bin Zhao, Hua Jiang, Yinghui Cao, Yan Zhang, Weiyan Chen, Tingting Li, Jiakai Hou   +8 more
wiley   +1 more source

Uranium Addition and Loss in Serpentinites: The Potential Role of Iron Oxides

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract Fluid‐mobile uranium serves as a tracer for water‐rock alteration in serpentinized mantle rocks, which constitute an important uranium reservoir. However, the mechanism for uranium addition, where uranium is hosted, and the stability of the uranium enriched material during subduction is not settled.
Emily H. G. Cooperdock, Juan Carlos de Obeso, Frank J. Pavia   +2 more
wiley   +1 more source

Electromagnetic studies of the western part of the Ukrainian Shield

Геофизический журнал, 2019
Results of synchronous magnetotelluric and magnetovariation researches along profiles Radomyshl—Fastiv and Ruzhin—Skvira conducted in 2015 for studying the deep structure of crust of the western part of the Ukrainian Shield, on purpose of search the ...
I. Yu. Nikolaev, A. M. Kushnir, V. A. Ilyenko, Yu. I. Nikolaev   +3 more
doaj   +1 more source