Results 71 to 80 of about 38,766 (189)

The Geochemistry of the Arabian Lithospheric Mantle--a Source for Intraplate Volcanism? [PDF]

Journal of Petrology, 2007
DANISH LITHOSPHERE CENTRE, STER VOLDGADE 10, COPENHAGEN, 1350K, DENMARK DEPARTMENT OF GEOLOGY, ROYAL HOLLOWAY UNIVERSITY OF LONDON, EGHAM TW20 0EX, UK SCHOOL OF EARTH SCIENCES, VICTORIA UNIVERSITY OF WELLINGTON, PO BOX 600, WELLINGTON, NEW ZEALAND DEPARTMENT OF EARTH SCIENCES, OREGON STATE UNIVERSITY, CORVALLIS, OR97331-5506, USA DEPARTMENT OF EARTH ...
J. E. Shaw, J. A. Baker, A. J. R. Kent, K. M. Ibrahim, M. A. Menzies   +4 more
openaire   +1 more source

Scaling the Swell: Plume‐Lithosphere Interaction and Its Signal in Dynamic Seafloor Topography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract Hotspot swells provide key constraints for understanding plume‐lithosphere interaction. However, quantitative relationships between plume properties and swell morphology remain poorly constrained. Here, we use 3D regional geodynamic models with composite diffusion‐dislocation creep rheology to investigate plume‐lithosphere interaction for ...
Ziqi Ma, Maxim Ballmer, Antonio Manjón‐Cabeza Córdoba   +2 more
wiley   +1 more source

Intraplate Lithospheric Deformation Forms Large Volcanic Regions

, 2023
Large igneous systems form either in areas of thin lithosphere at or near plate boundaries or by mantle-melting anomalies in intraplate settings with comparatively thicker lithosphere. Decompression melting or flux melt dominate at plate boundaries. Intraplate magmatism relates to thermal or compositional anomaly in the mantle.
César R. Ranero, Laura Gomez de la Peña, Manel Prada, Estela Jimenez, Patricia Cadenas, Alejandra Neri, Irene Merino, Arantza Ugalde, Ingo Grevemeyer   +8 more
openaire   +2 more sources

Focused Mantle Upwelling Beneath the Southeastern Asian Basalt Province Revealed by Seismic Surface Wave Tomography

Geophysical Research Letters
Following the termination of seafloor spreading in the South China Sea (SCS) basin, abundant intraplate volcanism widely spreads in the Indochina block, SCS basin, and Leiqiong area, forming the Southeastern Asian Basalt Province (SABP).
Xingli Fan, Zhen Guo, Ling Chen, Qi‐Fu Chen, Ting Yang, Chuntao Liang   +5 more
doaj   +1 more source

Marine Geophysical Investigation of a Fault Ruptured During the 2012 Mw 8.6 Wharton Basin Earthquake

Tectonics, Volume 45, Issue 10, October 2026.
Abstract The 2012 Mw 8.6 and 8.2 Wharton Basin earthquakes, within an intraplate deformation zone in the Indian Ocean, are the largest instrumentally recorded strike‐slip earthquakes on Earth that challenged the prevailing view that great earthquakes occur only at well‐defined plate boundaries.
Saksham Rohilla, Hélène Carton, Satish C. Singh, Muriel Laurencin, Nugroho Hananto, Mihai Roharik, Yanfang Qin, Sudipta Sarkar, Mark Noble, Mari Hamahashi, Paul Tapponnier   +10 more
wiley   +1 more source

Magma Channeling and Crustal Structure of a STEP Fault From Integrated Geological and Geophysical Data: The Central Aeolian Volcanoes (Southern Tyrrhenian Sea)

Tectonics, Volume 45, Issue 10, October 2026.
Abstract Arc volcanism is commonly interpreted as the surface expression of subduction‐related magmatism and its spatial organization is often controlled by lithospheric structures. In arc‐back‐arc systems, slab retreat may promote the transition from compression to extension and the development of Subduction‐Transform Edge Propagator (STEP) faults ...
L. Cocchi, F. Muccini, F. Greco, M. Palano, G. Ventura   +4 more
wiley   +1 more source

Segmented Moho Uplift and Implications for Magmatic Underplating Beneath the Datong Basin

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Understanding how the deep crust responds to coupled tectonic and magmatic processes is essential for deciphering intracontinental rifting. We apply high‐resolution passive‐source reverse time migration to teleseismic P‐wave receiver functions recorded by a dense seismic array to image the Moho beneath the Datong Basin. Our observations reveal
Chunlong Li, Huai Zhang, Yu Jeffrey Gu, Yicun Guo, Pei He, Guangyao Yin, Yaolin Shi   +6 more
wiley   +1 more source

Plume‐Fed Magmatic Fluids Weakened Crust and Promoted a Large Intraplate Earthquake in Northern Hainan (South China)

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images reveal two shallow low‐velocity zones extending to ∼10 km depth: a stronger ...
Lue Yang, Lun Li, Chen Cai, Jialong He, Hongyi Li, Yulong Xue, Jinming Zhang, Yuan Gao, Ziwei Li, Rui Gao   +9 more
wiley   +1 more source

Short-lived and discontinuous intraplate volcanism in the South Pacific: Hot spots or extensional volcanism? [PDF]

South Pacific intraplate volcanoes have been active since the Early Cretaceous. Their HIMU-EMI-EMII mantle sources can be traced back into the West Pacific Seamount Province (WPSP) using plate tectonic reconstructions, implying that these distinctive ...
Staudigel, Hubert, Pringle, Malcolm S., Koppers, Anthony A. P., Wijbrans, Jan R.   +3 more
core   +2 more sources

Evidence for long-lived (>100 Myr) continental intraplate volcanism: Mongolia since the last ocean closure [PDF]

Since the closure of the Mongol-Okhotsk Ocean in the Mesozoic, Mongolia has been in an intraplate tectonic setting; the nearest plate boundary being ∼3,000 km to the east, at the active Pacific subduction front.
Barry, Tiffany, Papadopoulou, Martha, Sherlock, Sarah C., Sherlock, Sarah, Hunt, Alison C., Dash, Batulzii, Barry, Tiffany L., Halton, Alison, Hunt, Alison, Halton, Alison M.   +9 more
core   +3 more sources