Results 71 to 80 of about 12,575 (215)
Investigating Layered Cratonic Lithosphere in the Fennoscandian Shield
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.Abstract Cold, thick, and chemically depleted lithosphere with high seismic velocity and low attenuation characterizes continental cratons. However, discrepancies between xenolith‐based thermal constraints and those inferred from surface‐wave seismic models, together with the widespread observation of mid‐lithosphere discontinuities, challenge the ...
Yiran Huang +2 more
wiley +1 more source
Journal of Economic Geology, 2019 Introduction Clinopyroxene is one of the most common of the rock forming minerals. Its long formation period (from the earliest crystallization of magma in the core of phenocrysts to the final microcrystalline crystallization in the rock background) can
Marzieh Ghadirpour +3 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.Abstract A better understanding of how trace element partition coefficients vary with melt and mineral composition, temperature, pressure, oxygen fugacity and fluid composition is essential to geochemical modeling of magmatic rocks. The Nernst partition coefficient D is the ratio of the concentration (by weight) of a trace element in a solid phase ...
Jean H. Bédard
wiley +1 more source
Magnetic anisotropy in clinopyroxene and orthopyroxene single crystals [PDF]
, 2015 Pyroxenes constitute an important component in mafic igneous and metamorphic rocks. They often possess a prismatic habit, and their long axis, the crystallographic c axis, helps define a lineation in a textured rock. Anisotropy of magnetic susceptibility
Christian Bender Koch +9 more
core +2 more sources
Tectonics, Volume 45, Issue 9, September 2026.Abstract The mechanisms by which new subduction zones form remain highly debated. Here we use Permo‐Triassic strata to evaluate potential mechanisms for initiation of the Talkeetna‐Bonanza Arc of the northern North American Cordillera. New mapping and analysis of Permian and Upper Triassic strata on the Alaska Peninsula suggest a period of uplift ...
Brandon M. Keough +2 more
wiley +1 more source
Petrological features of Subei Basin (Eastern China) lithospheric mantle and their relationships with H2O contents in NAMs [PDF]
, 2010 The Subei basin is located east of the Tanlu fault, a major discontinuity which separates the Archean North China Craton from the Proterozoic Yangtze Craton.
Hao, Yantao
core
The effect of fluorine on clinopyroxene/melt trace-element partitioning
, 2020 International audienceThe impact of fluorine on phase relations and clinopyroxene-melt element partitioning has been explored experimentally to better understand the effect of this halogen on the residual enrichment of the REE and HFSE during ...
van Hinsberg, Vincent J. +3 more
core +1 more source
Crystal growth of clinopyroxene in mafic alkaline magmas
, 2021 Recent experimental and natural studies have shown that igneous crystals can start to crystallize through skeletal or dendritic growth, and then backfill progressively to form polyhedral crystal morphologies, in contrast to the traditional tree-ring ...
Zhou, Jin-Sheng +7 more
core +1 more source
Journal of Metamorphic Geology, Volume 44, Issue 8, Page 585-610, September 2026.ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva +7 more
wiley +1 more source
Crystallographic orientations and timing relationships of clinopyroxene inclusions in diamond [PDF]
, 2022 Diamonds are the deepest “fragments” of the primordial Earth that reach the Earth’s surface after traveling a long path through the interior of our planet.
Antignani, Pia
core