Results 31 to 40 of about 241 (183)

Double Power-Law in Leucosome Width Distribution: Implications for Recognizing Melt Movement in Migmatites

Frontiers in Earth Science, 2020
Leucosome sizes in migmatites has been shown to follow power-law distribution, which is indicative of self-organized criticality governing accumulation and transport of partial melts in anatexis.
Anna Saukko, Christian Ahläng, Kaisa Nikkilä, Alvar Soesoo, Olav Eklund   +4 more
doaj   +1 more source

A new understanding of Demala Group complex in Chayu Area, southeastern Qinghai-Tibet Plateau: Evidence from zircon U-Pb and mica 40Ar/39Ar dating

China Geology, 2021
: The Chayu area is located at the southeastern margin of the Qinghai-Tibet Plateau. This region was considered to be in the southeastward extension of the Lhasa Block, bounded by Nujiang suture zone in the north and Yarlung Zangbo suture zone in the ...
Yuan Tang, Yu-ping Liu, Peng Wang, Wen-qing Tang, Ya-dong Qin, Xiao-dong Gong, Dong-bing Wang, Bao-di Wang   +7 more
doaj   +1 more source

Thermodynamic Modeling of Lithium Enrichment During Partial Melting: The Importance of Partition Coefficients

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Predicting the partial melting conditions that generate Li‐rich peraluminous melts is of major economic and societal importance. However, existing models disagree on the optimal conditions (e.g., pressure, temperature, protolith) and, consequently, on targets for exploration.
Nicolas Riel, Owen M. Weller, Caroline R. Soderman, Elisa O. Costa, Matthew C. Morris, Evangelos Moulas, Boris J. P. Kaus   +6 more
wiley   +1 more source

Dating the Sedimentary Protolith of the Daldyn Group Quartzite, Anabar Shield, Russia: New Detrital Zircon Constraints

Geosciences, 2020
Quartzites and paragneisses of the Archean granulite series of the Anabar Shield (Siberian Craton, Russia) are described geochemically. The Sm-Nd isotope systematics of the rocks and the U-Pb age (SHRIMP II) and geochemistry of zircons from quartzites ...
Nikolay I. Gusev, Lyudmila Yu. Sergeeva, Sergey G. Skublov   +2 more
doaj   +1 more source

Supporting Information-text for diverse anatexis in MCTZ

, 2021
The supporting information files provide hand photos (Figure S1) and X-ray mapping of garnet and melt inclusions (Figure S2). Geochemical characteristics of minerals (Figure S3 & S4),migmatites and gneisses (Figure S5) as well as leucosomes (Figure S6 to S8) are shown in Figure S3 to S8.
Liu, Shuaiqi, Zhang, Guibin, Zhang, Lifei, Wang, Shuzheng, Wu, Chenguang, Wang, Jiaxing   +5 more
openaire   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, Volume 44, Issue 6, Page 440-469, July 2026.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

Eastward Growth of the Tibetan Plateau Linked to Cenozoic Orogenic Wedge Deformation and Fluctuating Melt Sources

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The India–Asia collision continuously loads the Tibetan Plateau (TP), driving its Cenozoic eastward growth. This process has caused extensive crustal deformation and a diverse magmatic response. Here, we report on newly identified 35−6.5 Ma granitoids from Kangding area in southeastern (SE) TP.
Quan Ou, Jia‐Jing Mei, Derek A. Wyman, Jian‐Qing Lai, Feng Zi, Kun Wang, Jing‐Yi Liu, Jia Liao, Zhiwu Li   +8 more
wiley   +1 more source

Origin of the Azubai Be-mineralized pegmatites, Xinjiang Altay: constraints from Li–Hf isotopes

Open Geosciences
The genetic mechanism of rare-metal pegmatites – whether they form primarily by extreme fractionation of granitic magmas or direct crustal anatexis – remains highly controversial.
Ma Zhanlong, Hai Lianfu, Zhao Shaoqing
doaj   +1 more source

Syn‐ to Post‐Collisional Tectonic History of the Paleo‐Tethyan Orogenic Belt: Insights From Triassic Igneous Rocks in the North–Central Tibetan Plateau, China

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The closure of the Paleo‐Tethys Ocean was one of the most important global geological events which formed the framework of the East Asian continent during the early Mesozoic. The Longmu Co‐Shuanghu suture zone is considered to record closure of the main basin of the Paleo‐Tethys Ocean.
Jinyong Li, Qingguo Zhai, Yiming Liu, Peiyuan Hu, Yue Tang, Lingfang Wu, Ning Yang   +6 more
wiley   +1 more source

Carbonatite complexes of the South Urals: geochemical features, ore mineralization, and geodynamic settings

Записки Горного института, 2022
The article presents the results of study of the Ilmeno-Vishnevogorsky and Buldym carbonatite complexes in the Urals. It has been established that the carbonatites of the Ilmeno-Vishnevogorsky complex are represented by high-temperature ...
Irina L. Nedosekova
doaj   +1 more source