Results 21 to 30 of about 784,658 (343)
Frontiers in Earth Science, 2022 Lithium isotope geochemical studies of oceanic-type eclogites benefited from previous investigation of altered oceanic crust; however, processes of lithium isotope exchange operating on altered protoliths of continental-type eclogites have remained ...
Cheng-Long Yu +10 more
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, 1979 The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
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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
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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
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Rifting and Mafic Magmatism in the Hebridean Basins [PDF]
, 2015 Acknowledgements and Funding Research in the BPIP was supported by NERC grant GR9/1581, and the Carnegie Trust for the Universities of Scotland. H. Rollinson and E.
Hole, M. J. +3 more
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Geology of mantle xenoliths and maars of Dona Ana County, south-central New Mexico
New Mexico Mineral Symposium, 1992 Mark A. Ouimette, Andrea Reade
openaire +3 more sources
Crustal controls on apparent mantle pyroxenite signals in ocean-island basalts
Geology, 2019 Ocean-island basalts (OIBs) provide a unique insight into the extent of lithological heterogeneity (peridotite vs. pyroxenite) in Earth’s convecting mantle.
M. Gleeson, S. Gibson
semanticscholar +1 more source
Carbonate alteration of ophiolitic rocks in the Arabian–Nubian Shield of Egypt: sources and compositions of the carbonating fluid and implications for the formation of Au deposits [PDF]
, 2016 Ultramafic portions of ophiolitic fragments in the Arabian–Nubian Shield (ANS) show pervasive carbonate alteration forming various degrees of carbonated serpentinites and listvenitic rocks.
Azer, Mokhles K. +9 more
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Egyptian Journal of Remote Sensing and Space Sciences, 2021 Remote sensing methods are a vital alternative for regional exploration surveys. Many ore deposits (e.g., epithermal, porphyry-related, volcanogenic massive sulphides, etc.) have distinct distribution patterns of alteration zones that can be used for ...
Wanduku Tende Andongma +5 more
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