Results 101 to 110 of about 30,387 (283)
The United States Magnetotelluric Array and the National Impedance Map
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract The United States Magnetotelluric Array (USMTArray) data set, collected in the years 2006–2024, consists of more than 1,700 long‐period magnetotelluric stations covering the entirety of the contiguous United States on a quasi‐regular 70 km grid.
Anna Kelbert +7 more
wiley +1 more source
Sulfide saturation in evolving porphyry systems: El Abra porphyry Cu deposit, northern Chile, and the Grasberg-Ertsberg porphyry-skarn Cu-Au district, Papua, Indonesia [PDF]
, 2019 Sulfide saturation during the magmatic evolution of porphyry systems is emerging as an important control on chalcophile element fertility. Platinum group elements (PGE) have extreme sulfide melt-silicate melt partition coefficients that make them ...
Leys, Clyde A. +4 more
core
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar +6 more
wiley +1 more source
, 2014 The volcanosedimentary rocks that host the Au-rich porphyry Cu deposits of the Cadia Valley preserve the products of episodic volcanism that erupted into a large sedimentary basin.
Fox, Nathan +13 more
core +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract We present a comprehensive multidisciplinary investigation of the Healy submarine volcano in the southern Kermadec arc, northeast of New Zealand. We show the first results of sidescan‐sonar data collected at a submarine arc volcano by an Autonomous Underwater Vehicle (AUV).
A. Bagnasco +6 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract The middle Cretaceous granitoid plutons of the Shalair Valley, situated in northeastern Iraq, constitute a principal magmatic component of the Sanandaj–Sirjan Zone within the northwestern segment of the Zagros Orogenic Belt. Among these plutons, the equigranular Aulan body (AG) and the porphyritic Laladar body (LG) were crystallized at 111.0 ±
Imad Kadhim Abdulzahra +3 more
wiley +1 more source
İSPENDERE (MALATYA) YÖRESİ, SÜLFİT MİNERALLEŞMELERİNİN JEOLOJİSİ, MİNERALOJİSİ VE JEOKİMYASİ
Bulletin of the Mineral Research and Exploration, 1999 Bu çalışmada, Kızmehmet mahallesi (İspendere-Malatya), bakır-pirit cevherleşmesi ve yakın çevresinin jeolojisi, mineralojisi, petrografisi, jeokimyası, yan kayaç alterasyonu, cevher yan kayaç ilişkileri ve cevherin mikro yapı-doku ilişkileri incelenmiş ...
Halide DUMANLILAR +2 more
doaj
Grain Size Sorting and Steady Bars Formation in Straight Channels—Part 1: Laboratory Experiments
Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.Abstract Surface grain size in gravel‐bed rivers is inherently heterogeneous, with marked spatial variability that remains challenging to predict, even in the presence of regular bedforms. This study investigates surface grain size variability on self‐formed alternate bars at the scale of a single bar unit, and is divided in two parts.
Marco Redolfi +3 more
wiley +1 more source
Oceanic anoxic events, subduction style and molybdenum mineralization
Solid Earth Sciences, 2016 Nearly half of the world's Mo resources are hosted in Cenozoic porphyries along the east Pacific margin. In contrast, there are essentially no large Mo porphyry deposits along the west Pacific.
Wei-dong Sun +6 more
doaj +1 more source