Results 31 to 40 of about 120,010 (213)
Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high mu (HIMU) mantle [PDF]
, 1999 Ultramafic xenoliths, basaltic lavas, and CO2 gases from the Cameroon line volcanic chain provide the first characterization of combined He, Ne, and Ar isotopes in a high-time-integrated 238U/204Pb = μ (HIMU) magmatic system. Helium isotopic compositions
Alex N. Halliday +16 more
core +1 more source
Imaging the Earth's small-scale structure using full-waveform inversion: Theory and application to the imaging of mantle plumes [PDF]
, 2013 Within the last decade, increasing computational power and theoretical advances have initiated the transition from approximation-based tomography to iterative full-waveform tomography in regional and global seismology.
Rickers, F.
core +2 more sources
The Probability of Mantle Plumes in Global Tomographic Models
Geochemistry, Geophysics, Geosystems, 2020 While the downward mass flux in the Earth's deep interior is well constrained by seismic tomography, the upward flux is still poorly understood and debated.
Augustin Marignier +2 more
doaj +1 more source
How the Indian Ocean Geoid Low Was Formed
Geophysical Research Letters, 2023 The origin of the Earth's lowest geoid, the Indian Ocean geoid low (IOGL) has been controversial. The geoid predicted from present‐day tomography models has shown that mid to upper mantle hot anomalies are integral in generating the IOGL.
Debanjan Pal, Attreyee Ghosh
doaj +1 more source
Mantle plumes and mantle dynamics in the Wilson cycle [PDF]
Geological Society, London, Special Publications, 2018 Abstract This review discusses the thermal evolution of the mantle following large-scale tectonic activities such as continental collision and continental rifting. About 300 myr ago, continental material amalgamated through the large-scale subduction of oceanic seafloor, marking the termination of one or more oceanic basins (e.g.
openaire +4 more sources
Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]
, 2014 We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
CORDIER, Patrick +6 more
core +1 more source
Plume tectonics – myth or reality?
Записки Горного института, 2017 The paper is dedicated to the role of mantle plumes in the formation of large igneous provinces. From different regions of the world facts are mentioned that contradict key points of plume tectonics.
Yu. I. Daragan-Sushchov
doaj +1 more source
Nature Communications, 2021 Magmatic productivity at passive margins is controlled by mantle temperature and rifting style. The authors reveal that melt volume at rifted margins is linearly correlated with margin width and that volcanic margins may result from depth dependent ...
Gang Lu, Ritske S. Huismans
doaj +1 more source
Earth’s mantle composition revealed by mantle plumes
, 2023 International audienceEarth's mantle is integral to many processes that shape our planet, including convection, crustal formation, crustal recycling, and global heat and volatile budgets.
Rita Parai +21 more
core +1 more source
Near Surface Geophysics, EarlyView.Abstract The United Kingdom's shallow aquifers offer significant but underdeveloped geothermal energy resource. Seismic methods can help address this by improving the understanding of aquifer heterogeneity and potentially allowing long‐term monitoring of thermal plumes.
Adam D. Booth +10 more
wiley +1 more source