Results 11 to 20 of about 17,328 (228)

Nitrogen Diffusion in Calcite

open access: yesGeophysical Monograph Series, Page 97-104., 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 ...
Daniele Cherniak   +2 more
wiley  

+21 more sources

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical 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  

+12 more sources

THE STRUCTURE OF LOW-VELOCITY ZONES IN THE MANTLE OF THE NORTHERN EUROPE

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The areas of low-velocity middle mantle shift into the transition zone are distinguished according to 3-d P-velocity model of the Fennoscandian shield mantle and its surroundings using Taylor approximation method.
Татьяна Цветкова   +5 more
doaj   +1 more source

Depth-dependent density change within the continental upper mantle

open access: yesContributions to Geophysics and Geodesy, 2012
The empirical model of the depth-dependent density change within the upper continental mantle is derived in this study. The density of the upper(most) mantle underlying the continental crust is obtained from the estimated values of the crust–mantle (Moho)
Robert TENZER   +2 more
doaj   +1 more source

Hemispheric Geochemical Dichotomy of the Mantle Is a Legacy of Austral Supercontinent Assembly and Onset of Deep Continental Crust Subduction

open access: yesAGU Advances, 2022
Oceanic hotspots with extreme enriched mantle radiogenic isotopic signatures—including low 143Nd/144Nd indicative of subducted continental crust—are linked to plume conduits sampling the southern hemispheric mantle.
M. G. Jackson, F. A. Macdonald
doaj   +1 more source

Mantle roots of the Emeishan plume: an evaluation based on teleseismic P-wave tomography [PDF]

open access: yesSolid Earth, 2017
The voluminous magmatism associated with large igneous provinces (LIPs) is commonly correlated to upwelling plumes from the core–mantle boundary (CMB). Here we analyse seismic tomographic data from the Emeishan LIP in southwestern China.
C. He, M. Santosh, M. Santosh
doaj   +1 more source

Kinematic Representations of Linear and Power‐Law Viscoelastic Deformation Through the Earthquake Cycle

open access: yesGeophysical Research Letters, 2022
Viscoelastic deformation below the Earth's elastic crust is modulated by stresses generated by both plate tectonic and earthquake cycle processes.
Brendan J. Meade   +2 more
doaj   +1 more source

Features of the velocity structure of the mantle under the Precambrian structures on the example of the Indian platform (according to seismic tomography)

open access: yesГеофизический журнал, 2021
The paper presents additional data, approaching to understanding the driving forces in the formation of geological structures and the development of the Indian platform.
L.N. Zaiets   +2 more
doaj   +1 more source

Mantle transition zone thickness beneath Ross Island, the Transantarctic Mountains, and East Antarctica

open access: yesGeophysical Research Letters, 2008
The thickness of the mantle transition zone beneath Ross Island, and parts of the Transantarctic Mountains and East Antarctic Craton has been mapped using data from the 2000–2003 Transantarctic Mountain Seismic Experiment to determine if, as indicated by
Angela Marie Reusch   +6 more
doaj   +1 more source

Earthquake in central Italy and velocities structure of the mantle

open access: yesГеофизический журнал, 2018
A three-dimensional P-velocity model of the European mantle built on the Taylor approximation made it possible to analyze the velocity structure of the mantle under the Mediterranean and, in particular, under Central Italy, to a depth of 2500 km. It is
T. A. Tsvetkova   +2 more
doaj   +1 more source

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