Results 21 to 30 of about 2,366,156 (316)
Mantle heterogeneity during the formation of the North Atlantic Igneous Province: Constraints from trace element and Sr-Nd-Os-O isotope systematics of Baffin Island picrites [PDF]
, 2004 Sr-Nd-Os-O isotope and major and trace element data from ~62 Ma picrites from Baffin Island constrain the composition of mantle sources sampled at the inception of North Atlantic Igneous Province (NAIP) magmatism.
Eiler, J. +5 more
core +1 more source
Mantle roots of the Emeishan plume: an evaluation based on teleseismic P-wave tomography [PDF]
Solid 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
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
Finite-Frequency SKS Splitting: Measurement and Sensitivity Kernels [PDF]
, 2008 Splitting of SKS waves caused by anisotropy may be analyzed by measuring the splitting intensity, i.e., the amplitude of the transverse signal relative to the radial signal in the SKS time window. This quantity is simply related to structural parameters.
Paulssen, Hanneke +3 more
core +1 more source
Geophysical Research LettersA widely accepted global model of glacial isostatic adjustment (GIA) is based on ICE‐6G ice loading and 1D‐viscosity model VM5a, a viscosity profile which remains at odds with mantle convection constraints such as from geoid modeling.
A. Bellas‐Manley +3 more
doaj +2 more sources
Geophysical 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
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
Геофизический 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
Investigation of Petrological Characteristics of The Upper Mantle in Hadji-Abad Ophiolitic Complex (South of Iran): Based on Mineral Chemistry [PDF]
Journal of Sciences, Islamic Republic of Iran, 2021 The mantle peridotites of the Hadji-Abad ultramafic complex in Hormozgan province, show some petrological evolutions of the upper mantle of southern Iran. The complex includes harzburgite, lherzolite, dunite and chromitite.
Mojtaba SoltaniNezhad +4 more
doaj +1 more source
Chalcophile Elements and Sulfides in the Upper Mantle
, 2017 Sulfides are among the most important petrogenetic agents in magmatic systems. They are ubiquitous in most upper-mantle rock types, common as inclusions in diamonds and they host significant amounts of geochemically and economically important chalcophile
E. Kiseeva, R. Fonseca, D. Smythe
semanticscholar +1 more source