Results 81 to 90 of about 38,766 (189)

Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench

Geophysical Research Letters
Petit‐spot volcanism occurs in intraplate settings along the outer rise of subducting plates. Here we present evidence for petit‐spot type of volcanism from multibeam bathymetry and backscatter data from the Puerto Rico Trench (PRT).
Nicholas Harmon, William Danforth, Uri Ten Brink, J. Pablo Canales, Shuoshuo Han, Elizabeth Vanacore, Jose‐Luis Granja‐Bruña, Wayne Baldwin, Seth Ackerman, Liam Moser, Elisaveta Sokolkova   +10 more
doaj   +1 more source

Inception and Plate Evolution of the Lau Back‐Arc Basin From Plate Boundary Refinements

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Back‐arc basins are important settings for crustal growth that form in response to both near and far‐field tectonic influences. To better understand the processes that control back‐arc basin initiation and evolution, we present a refined model of the kinematics of opening of the Lau Basin, embedded in a global plate model.
Alan T. Baxter, Mark D. Hannington, Kaitlyn Breker, Christopher Galley, Marc L. Fassbender, Erin Bethell   +5 more
wiley   +1 more source

Building the Andean Crust at ∼35°S: Arc Geochemistry Reveals Cretaceous Thinning and Rapid Neogene Thickening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Quantification of the timing and mechanisms of crustal thickening in Cordilleran orogenic hinterlands remains challenging. We address this in the Andes using whole‐rock geochemistry and zircon petrochronology from a >70 Myr volcanic record in the Tinguiririca valley of Chile (∼35° ${}^{\circ}$S), which captures a pivotal transition from ...
Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Andrés Echaurren, Matías Barrionuevo, Jesse G. Mosolf, Michelle L. Foley, Mihai N. Ducea   +8 more
wiley   +1 more source

Major element data, 40Ar/39Ar step-heating and step-crushing data for anorthoclase megacrysts from the Newer Volcanic Province, south-eastern Australia

Data in Brief, 2018
We provide the dataset associated with the research article “40Ar/39Ar ages of alkali feldspar xenocrysts constrain the timing of intraplate basaltic volcanism” Matchan et al. [1].
E.L. Matchan, D. Phillips, E. Traine, D. Zhu   +3 more
doaj   +1 more source

Testing the Seismic Detectability of Magmatic Underplating Beneath the Hawaiian Ridge: A Synthetic Wavefield Approach

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Magmatic underplating beneath the Hawaiian Ridge has been inferred from early active‐source and teleseismic studies, whereas more recent active‐source seismic imaging and reprocessed legacy data have not identified a distinct underplated layer.
Megumi Fujimoto, Robert A. Dunn
wiley   +1 more source

CARBONIFEROUS 40Ar/39Ar AGE OF THE RARE METAL-ENRICHED RHYOLITES AND IGNIMBRITES IN THE SAKMARA ALLOCHTHON OF THE SOUTHERN URALS, THEIR GEOCHEMICAL FEATURES AND GEODYNAMIC SETTING

Известия высших учебных заведений: Геология и разведка, 2018
In the structure of the Sakmara allochthon of the Southern Uralssequence with rhyolites and ignimbrites locally occures. They have Nb-Zr-REE geochemical specialization.
A. V. Ryazantsev, A. V. Pilitsina, I. A. Novikov, K. E. Degtyarev   +3 more
doaj   +1 more source

Volcanology of the Raventhorpe and Pokeno West Volcanic Complexes, South Auckland Volcanic Field [PDF]

, 2012
The South Auckland volcanic field hosts at least 82 volcanic centres throughout the Pukekohe, Bombay, Tuakau, Pukekawa and Onewhero regions. The monogenetic basaltic volcanic field was active between 1.59 to 0.51 Ma, producing tuff rings, maar craters ...
Taylor, Simon Nicholas
core  

Intraplate Basalts in Eastern Continental China Record the Subduction History of the Pacific Plate

Geophysical Research Letters
To assess whether intraplate magmatism in eastern continental China records the subduction history of the Pacific plate, we plotted elemental compositions of the volcanic rocks in this region since the Early Cretaceous as a function of age.
Pu Sun, Yaoling Niu, Pengyuan Guo, Meng Duan, Xiaohong Wang, Hongmei Gong   +5 more
doaj   +1 more source

Volcanism and seismicity in the Indo-Australian seismic belt: manifestations of intraplate tectonics

Annals of Geophysics, 1978
Disregarding the mid-oceanic ridges, the oceanic part of the Indo-<br />Australian Seismic Belt is the longest, seismically active zone in the<br />world-ocean. It begins west of Ceylon and runs towards Australia.
P. HEDERVARI
doaj   +1 more source

Intraplate Volcanism In The Western Pacific Seamount Province

, 2022
The Western Pacific Seamount Province (WPSP) is an area characterized by an abundance of large seamounts which are mostly Cretaceous aged and formed in an intraplate setting.
Sexton, Matthew
core