Metasomatized lithospheric mantle for Mesozoic giant gold deposits in the North China craton [PDF]
, 2020 The origin of giant lode gold deposits of Mesozoic age in the North China craton (NCC) is enigmatic because high-grade metamorphic ancient crust would be highly depleted in gold.
Becker, Harry +9 more
core +1 more source
Geochemistry, Geophysics, Geosystems, 2020 The geology of southern New England reflects subduction and terrane accretion during the Appalachian Orogeny and rifting during the breakup of Pangea.
Ethan Lopes +3 more
doaj +1 more source
Geology of the Monte Banchetta – Punta Rognosa area (Troncea valley, Western Alps)
Journal of Maps, 2021 The map ‘Geology of the Monte Banchetta – Punta Rognosa area (Troncea valley, Western Alps)’ details the lithostratigraphy and structural setting of a key sector in the Alpine chain, characterized by close associations of continental and oceanic ...
Alberto Corno +3 more
doaj +1 more source
101 geodynamic modelling: how to design, interpret, and communicate numerical studies of the solid Earth [PDF]
Solid Earth, 2022 Geodynamic modelling provides a powerful tool to investigate processes in the Earth's crust, mantle, and core that are not directly observable. However, numerical models are inherently subject to the assumptions and simplifications on which they are ...
I. van Zelst +7 more
doaj +1 more source
Collision Chains among the Terrestrial Planets. III. Formation of the Moon [PDF]
Planet. Sci. J. 2:200 (2021), 2021 In the canonical model of Moon formation, a Mars-sized protoplanet "Theia" collides with proto-Earth at close to their mutual escape velocity $v_{\rm esc}$ and a common impact angle 45{\deg}. The "graze-and-merge" collision strands a fraction of Theia's mantle into orbit, while Earth accretes most of Theia and its momentum.
arxiv +1 more source
Growth and evolution of secondary volcanic atmospheres: I. Identifying the geological character of hot rocky planets [PDF]
, 2021 The geology of Earth and super-Earth sized planets will, in many cases, only be observable via their atmospheres. Here, we investigate secondary volcanic atmospheres as a key base case of how atmospheres may reflect planetary geochemistry. We couple volcanic outgassing with atmospheric chemistry models to simulate the growth of C-O-H-S-N atmospheres in
arxiv +1 more source
Evidence for a reducing Archean ambient mantle and its effects on the carbon cycle [PDF]
, 2016 Chemical reduction-oxidation mechanisms within mantle rocks link to the terrestrial carbon cycle by influencing the depth at which magmas can form, their composition, and ultimately the chemistry of gases released into the atmosphere.
Aulbach, Sonja, Stagno, Vincenzo
core +1 more source
Sulfur loss from subducted altered oceanic crust and implications for mantle oxidation [PDF]
, 2020 © The Author(s), [year]. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Walters, J. B., Cruz-Uribe, A. M., & Marschall, H. R.
Cruz‐Uribe, Alicia M. +2 more
core +1 more source
Planets or asteroids? A geochemical method to constrain the masses of White Dwarf pollutants [PDF]
, 2021 Polluted white dwarfs that have accreted planetary material provide a unique opportunity to probe the geology of exoplanetary systems. However, the nature of the bodies which pollute white dwarfs is not well understood: are they small asteroids, minor planets, or even terrestrial planets?
arxiv +1 more source