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High-Mg# Adakitic Rocks Formed by Lower-crustal Magma Differentiation: Mineralogical and Geochemical Evidence from Garnet-bearing Diorite Porphyries in Central Tibet

期刊: JOURNAL OF PETROLOGY, 2021; 62 (4)

Modern arc adakites with high Mg# values (molar 100 x Mg/(Mg + Fe) ratio) are generally considered products of interaction between melts derived from ......

The Effects of Source Mixing and Fractional Crystallization on the Composition of Eocene Granites in the Himalayan Orogen

期刊: JOURNAL OF PETROLOGY, 2021; 62 (7)

Granites are generally the final products of crustal anatexis. The composition of the initial melts may be changed by fractional crystallization durin......

Magmatic Water Content and Crustal Evolution Control on Porphyry Systems: Insights from the Central Asian Orogenic Belt

期刊: JOURNAL OF PETROLOGY, 2021; 62 (2)

Porphyry systems, the most important reserves of Cu and Mo with significant Au, are genetically linked to the emplacement of hydrous and oxidized inte......

Evolution of Intraplate Alkaline to Tholeiitic Basalts via Interaction Between Carbonated Melt and Lithospheric Mantle

期刊: JOURNAL OF PETROLOGY, 2021; 62 (4)

Intraplate basaltic volcanism commonly exhibits wide compositional ranges from silica-undersaturated alkaline basalts to silica-saturated tholeiitic b......

Geochemical Distinction Between Altered Oceanic Basalt- and Seafloor Sediment-Derived Fluids in the Mantle Source of Mafic Igneous Rocks in Southwestern Tianshan, Western China

期刊: JOURNAL OF PETROLOGY, 2021; 62 (1)

The role of subducting oceanic crust-derived fluids in generating mafic arc magmatism has been widely documented. However, the subducting oceanic crus......

Mg-Sr-Nd Isotopic Insights into Petrogenesis of the Xiarihamu Mafic-Ultramafic Intrusion, Northern Tibetan Plateau, China

期刊: JOURNAL OF PETROLOGY, 2021; 62 (2)

To characterize the integrated magmatic processes for magma plumbing systems from mantle sources to magma chambers, we present Mg-Sr-Nd isotopic data ......

Pyroxenite Xenoliths Record Complex Melt Impregnation in the Deep Lithosphere of the Northwestern North China Craton

期刊: JOURNAL OF PETROLOGY, 2021; 62 (2)

Transformation of refractory cratonic mantle into more fertile lithologies is the key to the fate of cratonic lithosphere. This process has been exten......

Constraints on the Formation of the Giant Daheishan Porphyry Mo Deposit (NE China) from Whole-Rock and Accessory Mineral Geochemistry

期刊: JOURNAL OF PETROLOGY, 2021; 62 (4)

There are more than 80 porphyry (or skarn) Mo deposits in northeastern China with Jurassic or Cretaceous ages. These are thought to have formed mainly......

LA-ICP-MS Analysis of Crystallized Melt Inclusions in Olivine, Plagioclase, Apatite and Pyroxene: Quantification Strategies and Effects of Post-Entrapment Modifications

期刊: JOURNAL OF PETROLOGY, 2021; 62 (4)

Melt inclusions represent a unique tool to reconstruct the composition and chemical evolution of silicate melts in magmatic systems. Laser-ablation in......

Petrologic Reconstruction of the Tieshan Magma Plumbing System: Implications for the Genesis of Magmatic-Hydrothermal Ore Deposits within Originally Water-Poor Magmatic Systems

期刊: JOURNAL OF PETROLOGY, 2020; 61 (5)

Most genetic models for magmatic-hydrothermal ore deposits are based on the prerequisite that the parental magmas associated with mineralization are e......

Partial Melts of Intermediate-Felsic Sources in a Wedged Thickened Crust: Insights from Granites in the Sulu Orogen

期刊: JOURNAL OF PETROLOGY, 2020; 61 (5)

High-pressure (>15 kbar) melts of intermediate-felsic materials have been well studied by experiments, whereas their existence in nature, especiall......

Geochemistry and Petrogenesis of Mafic and Ultramafic Inclusions in Sublayer and Offset Dikes, Sudbury Igneous Complex, Canada

期刊: JOURNAL OF PETROLOGY, 2020; 61 (6)

The c. 1.85 Ga Sudbury Igneous Complex (SIC) is the igneous remnant of one of the oldest, largest and best-preserved impact structures on Earth and co......

UHT Metamorphism Peaking Above 1100 degrees C with Slow Cooling: Insights from Pelitic Granulites in the Jining Complex, North China Craton

期刊: JOURNAL OF PETROLOGY, 2020; 61 (6)

The peak temperature and duration of ultrahigh-temperature (UHT) metamorphism are critical to identify and understand its tectonic environment. The UH......

Various Ages of Recycled Material in the Source of Cenozoic Basalts in SE China: Implications for the Role of the Hainan Plume

期刊: JOURNAL OF PETROLOGY, 2020; 61 (6)

Subduction processes introduce crustal materials into the mantle, and mantle plumes return them to the surface. However, when and how the subducted ma......

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