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
Questioning mantle plumes [PDF]
Physics Today, 2012 N/A ; © 2012 by the American Institute of Physics.
Anderson, Don L.
openaire +5 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
Upper- and mid-mantle interaction between the Samoan plume and the Tonga-Kermadec slabs [PDF]
, 2016 Mantle plumes are thought to play a key role in transferring heat from the core\u2013mantle boundary to the lithosphere, where it can significantly influence plate tectonics. On impinging on the lithosphere at spreading ridges or in intra-plate settings,
AM Dziewoński +54 more
core +2 more sources
Fat Plumes May Reflect the Complex Rheology of the Lower Mantle
Geophysical Research Letters, 2018 Recent tomographic imaging of the mantle below major hot spots shows slow seismic velocities extending down to the core‐mantle boundary, confirming the existence of mantle plumes. However, these plumes are much thicker than previously thought.
A. Davaille, Ph. Carrez, P. Cordier
doaj +1 more source
Insights Into the Origins and Compositions of Mantle Plumes: A Comparison of Galápagos and Hawai'i
Geochemistry, Geophysics, Geosystems, 2020 The Galápagos and Hawai'i archipelagos are formed by mantle plumes originating at the large low shear velocity province (LLSVP) boundary. We report new high‐precision Pb, Sr, Nd, and Hf isotopic analyses on 83 Galápagos samples and compare them with ...
Karen S. Harpp, Dominique Weis
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Africa's Cenozoic tectonism is often attributed to mantle plumes, particularly below East Africa, but their morphology, number, location, and impact on the African lithosphere are debated.
A. Boyce +6 more
doaj +1 more source
On the location of plumes and lateral movement of thermochemical structures with high bulk modulus in the 3-D compressible mantle [PDF]
, 2011 The two large low shear velocity provinces (LLSVPs) at the base of the lower mantle are prominent features in all shear wave tomography models. Various lines of evidence suggest that the LLSVPs are thermochemical and are stable on the order of hundreds ...
Gurnis, Michael +3 more
core +1 more source
Evidence for a chemical-thermal structure at base of mantle from sharp lateral P-wave variations beneath Central America [PDF]
, 2006 Compressional waves that sample the lowermost mantle west of Central America show a rapid change in travel times of up to 4 s over a sampling distance of 300 km and a change in waveforms.
D. V. Helmberger +4 more
core +3 more sources
Scientific Reports, 2021 Rare oceanic diamonds are believed to have a mantle transition zone origin like super-deep continental diamonds. However, oceanic diamonds have a homogeneous and organic-like light carbon isotope signature (δ13C − 28 to − 20‰) instead of the extremely ...
Luc S. Doucet +2 more
doaj +1 more source