Results 171 to 180 of about 5,040,927 (317)

Investigating the Lid Effect on the Generation of Ocean Island Basalts: 2. Geodynamical Simulations

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract The concept that oceanic lithosphere mechanically limits upwelling and decompression melting of mantle plumes is known as the lid effect and is backed up by observations of ocean island basalt (OIB) geochemistry. Nevertheless, in a recent companion study on OIB geochemistry, several additional factors were identified that further influence OIB
Shihao Jiang   +5 more
wiley   +1 more source

Why Are Plume Excess Temperatures Much Less Than the Temperature Drop Across the Lowermost‐Mantle Thermal Boundary Layer?

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract While temperature drop across the mantle's basal thermal boundary layer (TBL) is likely > ${ >} $1,000 K, the temperature anomaly of plumes believed to rise from that TBL is only up to a few hundred Kelvins. Reasons for that discrepancy are still poorly understood and a number of causes have been proposed.
Bernhard Steinberger   +3 more
wiley   +1 more source

Coerciveness and isomorphism of discontinuous Sturm-Liouville problems with transmission conditions

open access: yesJournal of New Results in Science
This study investigates a discontinuous Sturm-Liouville boundary value problem(BVP) on two intervals with functionals and transmission conditions in the direct sum ofSobolev spaces. Moreover, it presents the differential operator generated by the problem
Murat Küçük, Mustafa Kandemir
doaj   +1 more source

A Deep Dive Into a Ridge‐Transform Fault Intersection: Volcano‐Tectonic Relationships in an Enhanced Cold‐Edge Effect at the Romanche Fracture Zone

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract At mid‐ocean ridges, the mantle temperature and composition, and the lithosphere thickness control the melting conditions, which influence the feeding and structure of the neo‐volcanic areas. We present a study of the eastern intersection between the Romanche transform fault (TF) and the adjacent southward segments of the Mid‐Atlantic Ridge ...
Léa Grenet   +6 more
wiley   +1 more source

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