Discovery of distinct lithosphere-asthenosphere boundary and the Gutenberg discontinuity in the Atlantic Ocean. [PDF]
Sci Adv, 2022 The plate tectonic theory requires a rigid lithosphere floating over a weak asthenosphere, separated by the lithosphere-asthenosphere boundary, which has been sometimes interpreted as the Gutenberg discontinuity. Using a deep seismic reflection technique,
Audhkhasi P, Singh SC.
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Wide-angle seismic reflections reveal a lithosphere-asthenosphere boundary zone in the subducting Pacific Plate, New Zealand. [PDF]
Sci Adv, 2022 New wide-angle seismic reflection data from offshore New Zealand show that the lithosphere-asthenosphere boundary (LAB) is more structured than previously thought.
Herath P +4 more
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A Complex Mantle Plume Head Below East Africa‐Arabia Shaped by the Lithosphere‐Asthenosphere Boundary Topography [PDF]
Geochemistry Geophysics Geosystems, 2022 Hot plumes rising from Earth's deep mantle are thought to cause uplift, rifting and large igneous province (LIP) emplacement. LIP volcanism in continents often spans tens of Ma and scatters unevenly over broad areas.
Chiara Civiero +2 more
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Assessing the role of thermal disequilibrium in the evolution of the lithosphere–asthenosphere boundary: an idealized model of heat exchange during channelized melt transport [PDF]
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
Mousumi Roy
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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.
Takeshi Akuhara +7 more
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A Lithosphere‐Asthenosphere Boundary and Partial Melt Estimated Using Marine Magnetotelluric Data at the Central Middle Atlantic Ridge [PDF]
Geochemistry Geophysics Geosystems, 2020 The differential motion between the lithosphere and the asthenosphere is aseismic, so the magnetotelluric (MT) method plays an important role in studying the depth and nature of the lithosphere‐asthenosphere boundary (LAB).
Shunguo Wang +3 more
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Rejuvenated lavas resolve enriched ponded melt at the lithosphere-asthenosphere boundary [PDF]
Goldschmidt2023 abstracts, 2023 Rejuvenated volcanism occurs at ocean islands that would otherwise be considered extinct, outside of the spatial-temporal evolution of the parent hotspot track.
A. F. Rogers +9 more
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The Nature of the Lithosphere‐Asthenosphere Boundary [PDF]
Journal of Geophysical Research: Solid Earth, 2020 Plate tectonic theory was developed 50 years ago and underpins most of our understanding of Earth's evolution. The theory explains observations of magnetic lineations on the seafloor, linear volcanic island chains, large transform fault systems, and deep
Catherine A. Rychert +3 more
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The lithosphere–asthenosphere boundary structure at 11–21 Ma from wide-angle seismic data in the equatorial Atlantic Ocean [PDF]
Geophysical Journal International, 2023 The lithosphere-asthenosphere boundary (LAB) separates the rigid lithospheric plate above with the ductile and convective asthenosphere below and plays a fundamental role in plate tectonic processes.
Venkata Vaddineni, S. C. Singh
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Melt focusing along lithosphere-asthenosphere boundary below Axial volcano. [PDF]
NatureBeneath oceanic spreading centres, the lithosphere–asthenosphere boundary (LAB) acts as a permeability barrier that focuses the delivery of melt from deep within the mantle towards the spreading axis1.
Kent GM +5 more
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