Results 51 to 60 of about 9,129 (164)

Unraveling the Connection Between Subsurface Stress and Geomorphic Features

Geophysical Research Letters
The tectonic stress field induces surface deformation. At long wavelengths, both lithospheric heterogeneity (changes in the thickness and density of crust and lithospheric mantle) and basal tractions from mantle convection contribute to the stress field.
B. Kuhasubpasin, S. Moon, C. Lithgow‐Bertelloni   +2 more
doaj   +1 more source

Global mantle isotopic anomalies linked to supercontinent-superocean evolution for the past 700 million years

Communications Earth & Environment
Earth’s mantle isotopic composition is highly heterogeneous, with enriched and depleted regions1–3 shaped by a complex history of depletion and re-enrichment over 4.5 billion years.
Piero A. B. de Sampaio, Zheng-Xiang Li, Luc S. Doucet   +2 more
doaj   +1 more source

Mantle heterogeneity caused by trapped water in the Southwest Basin of the South China Sea. [PDF]

Nat Commun, 2023
Tian J, Ma Z, Lin J, Xu M, Yu X, Le BM, Zhang X, Zhang F, Guo L.   +8 more
europepmc   +1 more source

Coexistence of calc-alkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy)

Geologica Acta, 2011
The volcanic complex of Mts. Cimini (~0.90-1.30Ma) represents the geographical and chronological transition between the Tuscan Magmatic Province (TMP) and the Roman Magmatic Province (RMP), in central Italy.
M. AULINAS, D. GASPERINI, D. GIMENO TORRENTE, P. MACERA, J.L. FERNÁNDEZ TURIEL, C. CIMARELLI   +5 more
doaj  

How P‐Wave Scattering Throughout the Entire Mantle Mimics the High‐Frequency Pdiff and Its Coda

Geophysical Research Letters
We document the arrival of seismic energy in the core shadow zone up to large distances beyond 150° more than 100 s prior to the core phases. Numerical simulations of the energy transport in an established heterogeneity model show that scattering ...
Tuo Zhang, Christoph Sens‐Schönfelder, Marcelo Bianchi, Klaus Bataille   +3 more
doaj   +1 more source

The Use of Azimuthal Variation in ScS–S Differential Travel Times to Investigate Possible Anisotropy in the Lowermost Mantle Beneath the Philippines

Geosciences
We collected approximately 500 ScS–S differential travel times passing beneath the Philippines with various azimuths to discuss whether there were azimuthal variations in the ScS–S time residuals.
Satoru Tanaka
doaj   +1 more source

Is the Deep Martian Mantle Heterogeneous? A Reappraisal of Seismological Evidences

Geophysical Research Letters
It has been proposed that the deep Martian mantle contains distributed heterogeneities preserved since the accretion of the planet. This result relies on a multiple‐scattering interpretation of frequency‐dependent arrival times of P‐waves detected in the
L. Margerin
doaj   +1 more source

Evidences for mantle heterogeneities in the western Mediterranean

, 2015
Goldschmidt 2015, 16.08 - 21.08.2015 , Prague, Czech ...
Melchiorre, Massimiliano, Vergés Masip, Jaume, Fernández Ortiga, Manel, Coltorti, Massimo, Torné, Montserrat, Casciello, Emilio   +5 more
openaire   +2 more sources

Impact of Mantle Velocity Uncertainty on Receiver‐Function Imaging of the Transition Zone

Geophysical Research Letters
Seismological estimates of the 400‐km and 670‐km mantle discontinuities (d400 and d670) are crucial for understanding the thermochemical structure and dynamics of the mantle transition zone (MTZ).
Carlos A. M. Chaves, Felipe P. Corral, Jeroen Ritsema   +2 more
doaj   +1 more source

Heterogeneity in the mantle [PDF]

Astronomy & Geophysics, 2004
openaire   +1 more source