Results 81 to 90 of about 2,459 (233)

Rift‐Related Low‐Pressure–High‐Temperature Granulite Facies Metamorphism Generates Widespread Peraluminous Crustal Melts: Evidence From the Early Jurassic Mexican Crust

Geochemistry, Geophysics, Geosystems
High heat fluxes occurring in rift settings are expected to generate partially melted low‐pressure–high‐temperature granulites (LP–HTG). Therefore, studying these rocks can offer valuable insights into crustal reworking during extension.
Anthony Ramírez‐Salazar, Mattia Parolari, Arturo Gómez‐Tuena, Fernando Ortega‐Gutiérrez, Mariano Elías‐Herrera   +4 more
doaj   +1 more source

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

Giant lithium-rich pegmatites in Archean cratons form by remelting refertilised roots of greenstone belts

Communications Earth & Environment
Around 80% of the world’s hard-rock lithium supply comes from pegmatites formed in the Archean Eon, yet our understanding of how Lithium-pegmatites form assumes magma source compositions not relevant to those Archean cratons hosting most of the giant ...
Robert H. Smithies, Yongjun Lu, David C. Champion, Marcus T. Sweetapple, Jack R. Lowrey, Nathan H. Bowman, Kevin F. Cassidy, Tim J. Ivanic, Anthony I. S. Kemp, Rose E. Turnbull, Klaus Gessner, Fawna J. Korhonen   +11 more
doaj   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

Geochronology and geochemistry of the Paleogene Magdalena Suite of anatectic granites in northern Sonora, México

Revista Mexicana de Ciencias Geológicas
New zircon U-Pb geochronology, zircon geochemistry, and whole rock geochemistry are presented from the Magdalena granites in northern Sonora, Mexico that outcrop in the footwall of the Magdalena-Madera metamorphic core complex.
James B. Chapman, Carlos M. González-León, Luigi A. Solari, Elizard González-Becuar, Jonathan A. Nourse, Michelle Vázquez, Teresita Sánchez Navarro, Rufino Lozano Santacruz, Ofelia Pérez Arvizu, Estefany Grijalva Espinoza   +9 more
doaj   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Effect of the addition of yacon flour (Smallanthus sonchifolius) and freezing on baking performance

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Yacon (Smallanthus sonchifolius), a tuber rich in fructans, presents potential for application in breadmaking due to its nutritional properties and cryoprotectant activity. The aim of this study was to evaluate the incorporation of yacon flour in bread formulations (50 g/kg and 100 g/kg on flour mixture basis) and its impact on ...
Gabriel A. Atanazio‐Silva, Raquel Garzon, Giulliana P. Torrano, Carmen C. Tadini, Cristina M. Rosell   +4 more
wiley   +1 more source

Magmatic trees: a method to compare processes between igneous systems

Volcanica
This paper presents the motivation, instructions, and applications for a new graphical method to construct ‘magmatic trees’, which summarize the petrologic and geochemical processes that formed a particular igneous rock unit or eruption.
Christy B. Till
doaj   +1 more source

A Study on the Distribution Characteristics of Salinity and Nutrients and the Migration Mechanism of Soil Salt in the Delingha Saline‐Alkali Soil Profile of the Qaidam Basin

Land Degradation &Development, EarlyView.
ABSTRACT Soil salinization negatively impacts the economic development and ecological environment, particularly in the arid and semiarid regions of China. The Qaidam Basin constitutes a major distribution area of saline‐alkali land in the country. However, the distribution patterns of salinity and nutrients within soil profiles and the underlying salt ...
Hongpan Xue, Chenyu Wang, Yiyan Chen, Binkai Li, Aiyin Cheng, Hongyu Li, Bo Dong, Xiuyun Min, Haicheng Wei   +8 more
wiley   +1 more source

Petrogenesis of late triassic high-silica granites in the North Qiangtang terrane, central Tibetan Plateau

Frontiers in Earth Science
Although high-silica granites can provide unique insights into the maturity of the continental crust and rare metal enrichment, the origin of high-silica granitic magmatism remains uncertain.
Changjun Ji, Bin Liu, Yun Chen, Zhenhan Wu, Chong Chen   +4 more
doaj   +1 more source