Results 21 to 30 of about 2,132,735 (177)

Assessing the role of thermal disequilibrium in the evolution of the lithosphere-asthenosphere boundary: An idealized model of heat exchange during channelized melt-transport

Solid Earth, 2022
. This study explores how the continental lithospheric mantle (CLM) may be heated during channelized melt transport when there is thermal disequilibrium between (melt-rich) channels and surrounding (melt-poor) regions. Specifically, I explore the role of
M. Roy
semanticscholar   +1 more source

Lithosphere–asthenosphere boundary beneath the Sea of Japan from transdimensional inversion of S-receiver functions

Earth, Planets and Space, 2021
The evolution history of the Sea of Japan back-arc basin remains under debate, involving the opening of sub-basins such as the Japan and Yamato Basins.
T. Akuhara, K. Nakahigashi, M. Shinohara, Tomoaki Yamada, H. Shiobara, Y. Yamashita, K. Mochizuki, K. Uehira   +7 more
semanticscholar   +1 more source

Global distribution of the lithosphere-asthenosphere boundary: a new look [PDF]

Solid Earth, 2012
New global maps of the depth to the boundary between the lithosphere and the asthenosphere are presented. The maps are based on updated global databases for heat flow and crustal structure.
V. M. Hamza, F. P. Vieira
doaj   +1 more source

New Insights Into Lithospheric Structure and Melting Beneath the Colorado Plateau

Geochemistry, Geophysics, Geosystems, 2022
The Colorado Plateau and its surroundings serve as an archetypal case to investigate the interaction of mantle melting processes and lithospheric structure.
E. M. Golos, K. M. Fischer
doaj   +1 more source

The lithospheric S-wave velocity structure beneath the NE Tibetan Plateau and its surrounding craton basins

Frontiers in Earth Science, 2023
It is essential to investigate the spatial distribution of the lithosphere and asthenosphere in detail, to further obtain the understanding of the effect of plate collision and the process of orogenic movement.
Weilai Wang, Guangyao Cai, Jianping Wu, Lihua Fang   +3 more
doaj   +1 more source

A dynamic lithosphere–asthenosphere boundary near the equatorial Mid-Atlantic Ridge

Earth and Planetary Science Letters, 2021
In plate tectonic theory a weak asthenosphere is required to facilitate the motions of the rigid plates. Partial melt could weaken the mantle, in turn impacting convection, but to date the existence of persistent melt has remained controversial.
C. Rychert, S. Tharimena, N. Harmon, Shun-Min Wang, S. Constable, J. Kendall, P. Bogiatzis, M. Agius, D. Schlaphorst   +8 more
semanticscholar   +1 more source

Evolution of the Oceanic Lithosphere in the Equatorial Atlantic From Rayleigh Wave Tomography, Evidence for Small‐Scale Convection From the PI‐LAB Experiment

Geochemistry, Geophysics, Geosystems, 2020
The oceanic lithosphere is a primary component of the plate tectonic system, yet its evolution and its asthenospheric interaction have rarely been quantified by in situ imaging at slow spreading systems.
Nicholas Harmon, Catherine A. Rychert, J. Michael Kendall, Matthew Agius, Petros Bogiatzis, Saikiran Tharimena   +5 more
doaj   +1 more source

Reduced Viscosity of Mg2GeO4 with Minor MgGeO3 between 1000 and 1150 °C Suggests Solid-State Lubrication at the Lithosphere–Asthenosphere Boundary

Minerals, 2021
Tectonic plates are thought to move above the asthenosphere due to the presence of accumulated melts or volatiles that result in a low-viscosity layer, known as lithosphere–asthenosphere boundary (LAB).
T. Ferrand, D. Deldicque
semanticscholar   +1 more source

Western Gondwana imaged by S receiver-functions (SRF): new results on Moho, MLD (mid-lithospheric discontinuity) and LAB (lithosphere-asthenosphere boundary)

Gondwana Research, 2021
We study the Moho, the mid-lithospheric discontinuity (MLD), and the lithosphere-asthenosphere boundary (LAB) from southern Africa to northern Arabia, from Archean cratons to active rifts, at 1° resolution using our comprehensive new database of shear ...
Lin Liu, S. Klemperer, A. Blanchette
semanticscholar   +1 more source

HIGH-MG LAVAS FROM THE DARIGANGA VOLCANIC FIELD IN THE SOUTHEASTERN MONGOLIA: PETROGENETIC MODEL OF MAGMATISM AT THE ASTHENOSPHERE–LITHOSPHERE BOUNDARY

Геодинамика и тектонофизика, 2015
It is revealed that high-Mg lavas (MgO=11.0–15.8 wt. %) are spatially controlled by linear zones extending for more than 90 km and demonstrate chemically distinct differences from moderately-Mg compositions (MgO=3.0–11.0 wt.
Irina S. Chuvashova, Sergey V. Rasskazov, Tatiana A. Yasnygina, Ekaterina A. Mikheeva   +3 more
doaj   +1 more source