Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +11 more sources
Deformation-Induced Mechanical Instabilities at the Core-Mantle Boundary [PDF]
, 2007 Post-Perovskite: The Last Mantle Phase Transition Our understanding of the core-mantle boundary (CMB) region has improved significantly over the past several years due, in part, to the discovery of the post-perovskite phase.
Petford, Nick +2 more
core +3 more sources
Geophysical Monograph Series, Page 137-165., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov +3 more
wiley +4 more sources
Drift of Plumes in the Mantle [PDF]
, 2015 We quantified the fixity of mantle plumes relative to the mantle in high Rayleigh number numerical thermal convection with radiallyand temperature-dependent viscosity structures in a 3D spherical shell geometry. The relative velocities between plumes and the mantle increased with increasing Rayleigh number.
Brown, Luke Douglas
openaire +3 more sources
Fingerprinting secondary mantle plumes [PDF]
, 2022 Many vertical seismic velocity anomalies observed below different parts of the Eurasian plate are rooted in the transition zone between the upper and lower mantle (410–660 km), forming so-called secondary plumes.
Lavecchia, Alessio +4 more
core +6 more sources
Widespread PREMA in the upper mantle indicated by low-degree basaltic melts
Nature Communications, 2023 Studies of ocean island basalts have identified a Prevalent Mantle (PREMA) component as a fundamental feature of mantle geochemical arrays; however, its origin and distribution are highly controversial, including its potential link to plumes sourced in ...
Ronghua Cai +5 more
doaj +1 more source
The evolution of the Galápagos mantle plume
Science Advances, 2023 The lavas associated with mantle plumes may sample domains throughout Earth’s mantle and probe its dynamics. However, plume studies are often only able to take snapshots in time, usually of the most recent plume activity, leaving the chemical and geodynamic evolution of major convective upwellings in Earth’s mantle poorly constrained.
Soderman, Caroline R +5 more
openaire +2 more sources
Nature Communications, 2023 Discovering ancient mantle plumes is challenging. By combining electrical conductivity with mineral physics modelling, this work finds a remnant of an ancient plume trapped in the mantle transition zone and sheds new light on mantle plume physics.
Shiwen Li +5 more
doaj +1 more source
Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites [PDF]
, 2006 Several methods have been developed to assess the thermal state of the mantle below oceanic ridges, islands, and plateaus, on the basis of the petrology and geochemistry of erupted lavas. One leads to the conclusion that mantle potential temperature (i.e.
Lesher, C. M. +25 more
core +1 more source
Shear-induced material transfer across the core-mantle boundary aided by the post-perovskite phase transition [PDF]
, 2005 We present a novel mechanical model for the extraction of outer core material upwards across the CMB into the mantle side region of D" and subsequent interaction with the post-perovskite (ppv) phase transition.
Brodholt, John +4 more
core +3 more sources