Results 121 to 130 of about 27,222 (235)

Large‐Scale Flow Toward Low‐Velocity Anomalies Reconciles Seismic and Geodynamic Constraints in the Deepest Mantle Beneath Alaska

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Deep mantle downwellings are typically located away from the two Large Low‐Velocity Provinces (LLVPs) in Earth's mantle. Geodynamic models based on global seismic tomography generally predict that convective flow at the core‐mantle boundary spreads laterally away from downwelling regions and toward LLVPs.
Jonathan Wolf
wiley   +1 more source

Anatomy of the Emeishan Mantle Plume Head: Insights From New Geochronologic, Geochemical, and Geologic Data

Geochemistry, Geophysics, Geosystems
The link between mantle plumes and the formation of large igneous provinces (LIPs) is well established although the anatomy of these remains equivocal. Recent experimental studies and geophysical data suggest that the mantle plume head is more likely to ...
Hongbo Li, Zhaochong Zhang, Ran Liu, Marc K. Reichow, Jiang Zhu, Richard Ernst, M. Santosh, Wei Wang, Changquan Li, Botong Li   +9 more
doaj   +1 more source

Origin of the Bulge Topography Within Caloris Basin, Mercury

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Caloris basin on Mercury has a massive circular bulge topography imprinted with unique fault sets. A variety of deformational processes have been proposed to have influenced their formation, including both global contraction and basin evolution, as well as the deposition and weight of the volcanic infill.
G. Schmidt, V. Galluzzi, A. Sepe, S. Buoninfante, B. De Toffoli, L. Ferranti, P. Palumbo   +6 more
wiley   +1 more source

The Impact of Orogenic Inheritance on Rifted Margin Formation

Tectonics, Volume 45, Issue 2, February 2026.
Abstract Many rifted margins form within pre‐existing orogenic belts, emphasizing the significance of structural, thermal, and compositional inheritance in shaping rift dynamics. However, a key unresolved question is how these different types of orogenic inheritance individually influence rift evolution.
Kai Li, Sascha Brune, Zoltán Erdős, Michaël Pons, Anne Glerum   +4 more
wiley   +1 more source

Nineteenth‐Century Watercolour Reproductions of Old Masters in the Ruskin Teaching Collection, Ashmolean Museum, Oxford: Materials and Techniques of ‘Heaven‐Borne’ Copyist Charles Fairfax Murray

Archaeometry, Volume 68, Issue 1, Page 64-83, February 2026.
ABSTRACT This study presents the first comprehensive analysis of the pigments and techniques used by Charles Fairfax Murray (1849–1919), a leading expert in Italian Renaissance attribution, influential art collector and primary copyist for John Ruskin.
Victoria Kemp, Andrew Beeby, Kelly Domoney, Daniel Bone   +3 more
wiley   +1 more source

Non-mantle-plume process caused the initial spreading of the South China Sea. [PDF]

Sci Rep, 2020
Yu X, Liu Z.
europepmc   +1 more source

Oxygen Isotope Variations of Basaltic Lavas and Upper Mantle Rocks [PDF]

, 2001
This chapter summarizes the oxygen isotope geochemistry of terrestrial basalts and their mantle sources, including the conceptual framework for interpreting such data and the phenomenology of known variations.
Eiler, John M.
core  

Helium Isotope Variations in Gulf of Aden Basalts and the Surface Expression of Mantle Heterogeneity During Afar Plume—Triple Junction Interaction

Geochemistry, Geophysics, Geosystems
New helium isotope data for basalt glasses from the Gulf of Tadjoura and Gulf of Aden reveal a mantle plume signal that has 3He/4He up to 17 RA. In the Gulf of Aden, plume helium is detectable ∼380 km from the Afar triple junction, up to the Shukra El ...
D. W. Graham, P. J. Michael
doaj   +1 more source

Geochronology and geochemistry of late Cenozoic volcanics on Naozhou Island, South China: insights into the interaction between the paleo-subduction slab and the Hainan mantle plume

Frontiers in Earth Science
The mechanisms and processes of interaction between paleo-subducted slabs and mantle plumes are not well understood, primarily due to the challenges associated with direct observation. The Leiqiong Area (LQA), located in the northwestern South China Sea (
Jin Xu, Jin Xu, Hui Xie, Hui Xie, Hui Xie, Hui Xie, Zixuan Luo, Zixuan Luo, Yanting Chen, Yanting Chen, Hongcai Shi, Hongcai Shi, Hongcai Shi, Hongcai Shi   +13 more
doaj   +1 more source

Seafloor evidence for pre-shield volcanism above the Tristan da Cunha mantle plume. [PDF]

Nat Commun, 2020
Geissler WH, Wintersteller P, Maia M, Strack T, Kammann J, Eagles G, Jegen M, Schloemer A, Jokat W.   +8 more
europepmc   +1 more source