Results 101 to 110 of about 388,584 (268)
Tectonics, Volume 45, Issue 2, February 2026.Abstract An updated approach to seismically constrained modeling of gravity data reveals two broad, NW‐trending low‐density zones in the mantle lithosphere beneath the Canadian Cordillera. The low‐density zones coincide with a shallow lithosphere‐asthenosphere boundary (LAB), a shallow Curie‐point depth, and the location of Quaternary volcanoes.
Nathan Hayward, Tark S. Hamilton
wiley +1 more source
Interplay Between Mechanical and Petrochemical Models on the Fluid Extraction From Subduction Zones
Journal of Metamorphic Geology, Volume 44, Issue 2, Page 85-111, February 2026.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 +1 more
wiley +1 more source
JGEET: Journal of Geoscience, Engineering, Environment and TechnologyBaula and Pomalaa Ophiolitic Complexes are part of East Sulawesi Ophiolite (ESO). The ultramafic rocks in the Baula and Pomalaa Ophiolite Complex mainly is peridotite and consist of harzburgite, lherzolite and olivine websterite, mostly serpentinized ...
Rio Irhan Mais Cendrajaya +7 more
doaj +1 more source
, 2014 Carbon dioxide capture and storage by mineralization has been proposed as a possible technology to contribute to the reduction of global CO 2 levels. A main candidate as a feed material, to supply Mg cations for combination with CO 2 to form carbonate ...
M. Styles +4 more
semanticscholar +1 more source
Peridotite weathering is the missing ingredient of Earth’s continental crust composition
Nature Communications, 2018 The concentration of Ni and Cr of the continental crust cannot be explained by formation models involving differentiated magmatic rocks. Here, the authors show that hydrothermal alteration and chemical weathering of ultramafic rock compensates for the ...
Andreas Beinlich +5 more
doaj +1 more source
Mineralised ultramafic rocks in South Greenland
Rapport Grønlands Geologiske Undersøgelse, 1971 In 1960 several mineralised ultramafic boulders with a remarkable content of Pt were found by M. Loretan in the neighbourhood of Sarqa fjord in the Nanortalik district, South Greenland. This stimulated interest in a closer examination of the mafic and ultramafic rocks of South Greenland and in 1962 and 1963 J. P.
openaire +2 more sources
Geophysical Research LettersPercolation of dioritic melts through ultramafic cumulate mushes and their reaction and hybridization have been documented in some arcs, but the impact of the processes on the compositions of arc igneous rocks is not yet fully understood.
Wei Xu +4 more
doaj +1 more source
JGEET: Journal of Geoscience, Engineering, Environment and TechnologyClimate change has prompted significant global interest in carbon sequestration technologies, particularly using geological formations. This study investigates the potential of ultramafic rocks from the Kolaka Ophiolite Complex in Southeast Sulawesi for ...
Syahrul +4 more
doaj +1 more source
Quantitative chemical analyses of rocks with X-ray fluorescence analyzer: (1) Major elements
Antarctic Record, 1995 Analytical procedures for major elements in rocks (Si, Ti, Al, Fe, Mn, Mg, Ca, Na, K, P), using a newly installed X-ray fluorescence analyzer (RIGAKURIX3000) at the National Institute of Polar Research, are summarized.
Yoichi Motoyoshi, Kazuyuki Shiraishi
doaj +1 more source
Workshop on Magmatic Processes of Early Planetary Crusts: Magma Oceans and Stratiform Layered Intrusions [PDF]
The significance of the lunar highland pristine cumulate samples were reevaluated with the aid of the additional insights provided by geologically constrained terrestrial investigations.
Mccallum, I. S., Walker, D.
core +1 more source