Results 51 to 60 of about 3,074 (215)

Highly Enriched and Heterogeneous Mantle Signals Recorded in Mantle Pyroxenite Veins

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The Earth's mantle is inherently heterogeneous, reflecting ongoing mantle depletion and crustal recycling driven by plate tectonics. Radiogenic isotopes in oceanic basalts are commonly used to characterize mantle reservoirs, but the full chemical diversity of mantle‐derived melts may be obscured by magma mixing during melt transport and ...
Zhen‐Yu Zhang, Chuan‐Zhou Liu, Yan Liang, Tong Liu, Chang Zhang, Bo‐Da Liu, Wen‐Bin Ji, Wei‐Qi Zhang, Ke Huang   +8 more
wiley   +1 more source

Effect of Lunar Rotation on Antipodal Ejecta Deposition

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract The Moon's crust exhibits strong magnetic anomalies that likely record ancient magnetic fields produced by a core dynamo. Lunar materials have low magnetic susceptibility, but impactor material with high susceptibility may record the Moon's ancient dynamo. Some magnetic anomalies are antipodal to lunar basins and it is hypothesized that impact
S. Wakita, B. C. Johnson
wiley   +1 more source

Calcite is an efficient and low-cost material to enhance benthic weathering in shelf sediments of the Baltic Sea

Communications Earth & Environment
Recent studies have proposed calcite and dunite as possible alkaline materials for enhanced benthic weathering in shallow depocenters of the Baltic Sea as a marine carbon dioxide removal strategy.
Michael Fuhr, Andrew W. Dale, Klaus Wallmann, Rebecca Bährle, Habeeb Thanveer Kalapurakkal, Stefan Sommer, Timo Spiegel, Ryo Dobashi, Björn Buchholz, Mark Schmidt, Mirjam Perner, Sonja Geilert   +11 more
doaj   +1 more source

PETROLOGICAL EVIDENCES OF SYNDEFORMATION SEGREGATION OF CHROMITES DURING DUNITE FORMATION: EXAMPLE OF KRAKA OPHIOLITES, SOUTH URALS [PDF]

Минералогия, 2016
Results of structural and mineralogical studies of chromitite-bearing zone localized in spinel peridotites of the Middle Kraka ophiolite massif are presented.
D.E. Saveliev, E.V. Belogub, I.A. Blinov, D.A. Kozhevnikov, V.A. Kotlyarov   +4 more
doaj  

Earth's oldest mantle fabrics indicate Eoarchaean subduction

Nature Communications, 2016
Subduction is a main component of Phanerozoic plate tectonics, although the timing of initiation is controversial. Here, the authors present microstructural data from two 3.72 billion year old dunite lenses of Isua in Greenland, which suggest that ...
Mary-Alix Kaczmarek, Steven M. Reddy, Allen P. Nutman, Clark R. L. Friend, Vickie C. Bennett   +4 more
doaj   +1 more source

Origin, Tectonic Processes, and Metasomatism of Serpentinite in the Shimanto Accretionary Complex, SW Japan: Possible Diapiric Intrusion of Serpentinized Oceanic Lithosphere

Tectonics, Volume 45, Issue 7, July 2026.
Abstract Serpentinite plays a major role in the geodynamics of subduction zones. However, the processes by which serpentinite is incorporated into accretionary complexes, and the extent to which it interacts chemically and physically with accretionary lithologies, remain unclear.
Yusuke Shimura, Shunsuke Endo, Yoshihiro Asahara, Toshiki Haji, Kentaro Ushimaru, Koshi Yamamoto   +5 more
wiley   +1 more source

ACEME: Direct aqueous mineral carbonation of dunite rock

, 2019
This research explores the use of serpentinized dunite (which is comprised of 61% lizardite) as a feedstock for aqueous mineral carbonation. In initial experiments, dunite was heat-activated (630°C, 4 h), adopting a procedure which is similar to that ...
Michael Stockenhuber (21132050), Geoff F. Brent (5978348), Emad Benhelal (7821236), Faezeh Farhang (21278540), Mark S. Rayson (2112238), Eric Kennedy (21134012), Muhammad I. Rashid (8576865), Timothy Oliver (21139760)   +7 more
core  

Syn- and epigenetic nickel mineralization in the Kamchatka plutonic mafite-ultramafite formations

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2019
The paper presents data on known objects in the sulfide copper-nickel ore formation in Kamchatka, as well as other ore occurrences and points of nickel mineralization related to certain magmatic formations.
Novakov R.M.
doaj   +1 more source

Effects of Phase Interconnection and Chemical Interactions on the Strength of Experimentally Deformed Quartz‐Phlogopite Mixtures

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract To gain insigths into rheology and deformation mechanisms of phyllosilicate‐bearing crustal shear zones, deformation experiments on quartz‐phlogopite assemblages were conducted in general shear, with varying proportions of phlogopite (from 0% to 100%), at 800°C, 1 GPa and a bulk strain rate of ∼2 × 10−5s−1.
Laura Airaghi, Khadija Alaoui, Gabriel Serrano‐López, Hugues Raimbourg, Holger Stünitz, Jacques Précigout, Ida Di Carlo, Cécile Genevois, Weijia Zhan   +8 more
wiley   +1 more source

Podiform Chromitites in the Sorkhband Ultramafic Complex, Southern Iran: Evidence for [PDF]

Journal of Sciences, Islamic Republic of Iran, 2008
The podiform chromitite deposits of the Ordovician Sorkhband ultramafic complex, southwestern Makran, are the largest chromitite deposits in Iran. The Sorkhband ultramafic complex comprises of a northern part of dunite, podiform chromitite, olivine ...
doaj