Results 101 to 110 of about 27,251 (208)

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

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

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

Evolution of midplate hotspot swells: Numerical solutions [PDF]

The evolution of midplate hotspot swells on an oceanic plate moving over a hot, upwelling mantle plume is numerically simulated. The plume supplies a Gaussian-shaped thermal perturbation and thermally-induced dynamic support.
Chase, Clement G., Liu, Mian
core   +1 more source

Mantle plumes? [PDF]

Astronomy and Geophysics, 2003
openaire   +1 more source

Dynamics of mantle plumes [PDF]

, 2016
Mantle plumes are a link between different scales in the Earth’s mantle: They are an important part of large-scale mantle convection, transporting material and heat from the core-mantle boundary to the surface, but also affect processes on a smaller scale, such as melt generation and transport and surface magmatism.
openaire  

Mantle Plume‐Lithosphere Interactions Beneath the Emeishan Large Igneous Province

Geophysical Research Letters
The formation of large igneous provinces (LIPs) has been widely believed to be linked to mantle plume activity. However, how the plume modifies the overlying lithosphere, particularly its compositional structure, remains uncertain.
Anqi Zhang, Zhen Guo, Juan Carlos Afonso, J. Gregory Shellnutt, Yingjie Yang   +4 more
doaj   +1 more source

Sea floor swells and mantle plumes [PDF]

Most of the intraplate oceanic hot spots are located on the crest of broad topographic swells in the sea floor. These swells have Gaussian shaped profiles, with up to 1.6 km of relief and half widths of 200 to 300 km.
Olson, P.
core   +1 more source

Imaging the Galápagos mantle plume with an unconventional application of floating seismometers. [PDF]

Sci Rep, 2019
Nolet G, Hello Y, Lee SV, Bonnieux S, Ruiz MC, Pazmino NA, Deschamps A, Regnier MM, Font Y, Chen YJ, Simons FJ.   +10 more
europepmc   +1 more source

Mantle plumes on Venus revisited [PDF]

The Equatorial Highlands of Venus consist of a series of quasicircular regions of high topography, rising up to about 5 km above the mean planetary radius.
Kiefer, Walter S.
core   +1 more source