Results 131 to 140 of about 123,170 (220)

Interplay Between Mechanical and Petrochemical Models on the Fluid Extraction From Subduction Zones

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The breakdown of hydrous minerals during subduction results in a densification of the rocks, producing volume changes that can trigger fluid pressure fluctuations and hydrofracturing. These volume changes are controlled by the Clapeyron slope of the reaction and are quantified here using a macroscopic framework that integrates a zero ...
Thorsten Andreas Markmann, Pierre Lanari   +1 more
wiley   +1 more source

Lithostratigraphy, geology and geochemistry of the volcanic rocks of the Maligât Formation and associated intrusions on Disko and Nuussuaq, Paleocene of West Greenland

Geological Survey of Denmark and Greenland Bulletin, 2018
The Paleocene volcanic rocks in the Nuussuaq Basin on Disko and Nuussuaq comprise the picritic Vaigat Formation (c. 62–61 Ma) and the overlying basaltic Maligât Formation (c. 60 Ma).
Asger Ken Pedersen, Lotte Melchior Larsen, Gunver Krarup Pedersen   +2 more
doaj  

Effect of Undercooling on Clinopyroxene Crystallization in a High K Basalt: Implications for Magma Dynamics at Stromboli Volcano

, 2023
Fabio Colle, Matteo Masotta, Simone Costa, Silvio Mollo, Patrizia Landi, Alessio Pontesilli, Stefano Peres, Lucia Mancini   +7 more
openalex   +1 more source

The nature and formation of silica minerals in eucrite meteorites: Insight into the protoplanetary magma crystallization

Meteoritics &Planetary Science, EarlyView.
Abstract Silica polymorphs in meteorites provide critical constraints on crystallization processes associated with thermal activity in the early solar system. A detailed investigation of silica polymorphs in eucrites (the largest group of achondrites) using cathodoluminescence imaging and laser‐Raman spectroscopy revealed significant variations in the ...
Rei Kanemaru, Akira Yamaguchi, Naoya Imae, Ryoga Maeda, Makoto Kimura, Kenji Horie, Takashi Mikouchi, Masaaki Miyahara, Masahiro Yasutake, Atsushi Takenouchi, Haruka Ono, Aiko Nakato, Junko Isa, Tomohiro Usui, Hirotsugu Nishido   +14 more
wiley   +1 more source

Investigation and reclassification of four mesosiderites—Implications for their formation

Meteoritics &Planetary Science, EarlyView.
Abstract Mesosiderites are rare, differentiated meteorites, so‐called stony‐iron meteorites—they are impact breccias composed of an unusual mix of crustal basalt and pyroxenite, core‐derived metal, but no mantle materials. This odd mixture makes their origin enigmatic and has inspired many different formation theories over the last several decades ...
Gabriel Zachén, Carl Alwmark, Sanna Alwmark, Ludovic Ferrière, Roger H. Hewins   +4 more
wiley   +1 more source

Effect of Different Parameters on Charpy Impact Properties of Quasi-Isotropic Epoxy Composites Reinforced with Basalt and Glass Fibers

Journal of Advanced Materials in Engineering, 2015
In this study, the effects of different parameters on charpy impact properties of pure and hybrid composite laminates reinforced with basalt and glass filaments were investigated.
M. Tehrani Dehkordi, S. H. Bahrami, R. Nategi Jahromi   +2 more
doaj  

Cosmic ray exposure and gas retention ages of the shocked angrite Northwest Africa 7203: Implications for a collisional history of angrites' parent body

Meteoritics &Planetary Science, EarlyView.
Abstract Angrites and eucrites are among the oldest basaltic rocks in the solar system. However, the shock histories of these meteorite groups differ markedly, as most angrites show little to no evidence of shock metamorphism. While some angrites exhibit weak wavy extinction in olivine, indicative of low‐level shock, only two—Northwest Africa (NWA ...
Atsushi Takenouchi, Hirochika Sumino, Hideyuki Hayashi, Takashi Mikouchi, Martin Bizzarro   +4 more
wiley   +1 more source

A LREE-depleted component in the Afar plume: Further evidence from Quaternary Djibouti basalts

, 2009
Mohamed Ahmed Daoud, René C. Maury, Jean‐Alix Barrat, Rex N. Taylor, Bernard Le Gall, Hervé Guillou, Joseph Cotten, Joël Rolet   +7 more
openalex   +2 more sources

Phase equilibrium investigations of the Adirondack class basalts from the Gusev plains, Gusev crater, Mars [PDF]

, 2007
A. G. Monders, Étienne Médard, T. L. Grove   +2 more
openalex   +1 more source

Chromite in main group pallasite meteorites: Accessory mineral tracing planetesimal differentiation

Meteoritics &Planetary Science, EarlyView.
Abstract Main group pallasite meteorites (PMG) are samples of an early, highly differentiated magmatic planetesimal dominated by olivine and metal‐sulfide‐phosphide assemblages with accessory chromite among other phases. This mineralogy reflects mantle‐ and core‐related reservoirs, but the relative contributions of each and the overall petrogenesis are
Seann J. McKibbin, Lutz Hecht, Matthew S. Huber, Christina Makarona, Stepan M. Chernonozhkin, Philippe Claeys, Steven Goderis   +6 more
wiley   +1 more source