Spin Transition of Iron in Deep‐Mantle Ferromagnesite
Geophysical Monograph Series, Page 115-125., 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 ...
Jiachao Liu, Suyu Fu, Jung‐Fu Lin
wiley +6 more sources
The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces
Geophysical Monograph Series, Page 229-246., 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.
Alexander J. Dickson +2 more
wiley +4 more sources
A subduction influence on ocean ridge basalts outside the Pacific subduction shield
Nature Communications, 2021 We discover a pervasive subduction influence in the Arctic, Atlantic and Indian mantle, which is nearly absent in the Pacific mantle. Such a hemispheric-scale upper mantle heterogeneity reflects the control of a “subduction shield” that has surrounded ...
A. Y. Yang +5 more
doaj +1 more source
Geochemical Constraints on the Structure of the Earth's Deep Mantle and the Origin of the LLSVPs
Geochemistry, Geophysics, Geosystems, 2021 Geophysical analysis of the Earth's lower mantle has revealed the presence of two superstructures characterized by low shear wave velocities on the core‐mantle boundary.
Matthew Gleeson +4 more
doaj +1 more source
Low‐Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation
Geophysical Research Letters, 2023 The upper mantle is heterogeneous in Fe isotope compositions, but the origin of the heterogeneity needs understanding. Recent studies on oceanic basalts demonstrate that the upper mantle Fe isotope heterogeneity results from low‐degree melt metasomatism.
Pengyuan Guo +7 more
doaj +1 more source
Cenozoic plate driving forces [PDF]
, 1995 Past studies of plate driving forces have concluded that the forces due to subducted slabs in the upper mantle and those due to the thickening of the oceanic lithosphere are the principal driving forces. We reexamine the balance of driving forces for the
Lithgow‐Bertelloni, C, Richards, MA
core +1 more source
Annals of Geophysics, 2015 We conduct joint tomographic inversions of P and S travel time observations to obtain models of delta v_P and delta v_S in the entire mantle. We adopt a recently published method which takes into account the geodynamic coupling between mantle ...
Gaia Soldati +3 more
doaj +1 more source
Primordial Earth mantle heterogeneity caused by the Moon-forming giant impact [PDF]
, 2019 The giant impact hypothesis for Moon formation successfully explains the dynamic properties of the Earth-Moon system but remains challenged by the similarity of isotopic fingerprints of the terrestrial and lunar mantles.
Ballmer, Maxim D. +6 more
core +3 more sources
Introduction to special section: Hawaii Scientific Drilling Project [PDF]
, 1996 Intraplate or "hot spot" volcanic island chains, exemplified by Hawaii, play an important role in plate tectonic theory as reference points for absolute plate motions, but the origin of these volcanoes is not explained by the plate tectonic paradigm ...
DePaolo, Donald J. +2 more
core +1 more source
Melting and Mixing States of the Earth's Mantle after the Moon-Forming Impact [PDF]
, 2015 The Earth's Moon is thought to have formed by an impact between the Earth and an impactor around 4.5 billion years ago. This impact could have been so energetic that it could have mixed and homogenized the Earth's mantle. However, this view appears to be
Nakajima, Miki, Stevenson, David J.
core +4 more sources