Results 121 to 130 of about 16,936 (226)

Subducted Carbon From Mantle Plume in Mid‐Ocean Ridge Basalts

Geophysical Research Letters
Deciphering the Earth's deep carbon cycle, from mantle plumes to mid‐ocean ridges, remains incompletely understood. In this study, we analyze the magnesium isotope composition of basalts collected from the South Mid‐Atlantic Ridge (SMAR), which have been
Haitao Zhang, Quanshu Yan, Xuefa Shi, Chuanshun Li, Fang Huang, Qiuyu Wen   +5 more
doaj   +1 more source

Venus steep-sided domes: Relationships between geological associations and possible petrogenetic models [PDF]

Venus domes are characterized by steep sides, a circular shape, and a relatively flat summit area. In addition, they are orders of magnitude larger in volume and have a lower height/diameter ratio than terrestrial silicic lava domes.
Head, James W., III, Pavri, B.
core   +1 more source

Mantle plumes? [PDF]

Astronomy and Geophysics, 2003
openaire   +1 more source

Ultra‐Low Velocity Zone Beneath the Atlantic Near St. Helena

Geochemistry, Geophysics, Geosystems
There are various hotspots in the Atlantic Ocean, which are underlain by mantle plumes that likely cross the mantle and originate at the core‐mantle boundary. We use teleseismic core‐diffracted shear waves to look for an Ultra‐Low Velocity Zone (ULVZ) at
Sefira Davison, Carl Martin, Rita Parai, Sanne Cottaar   +3 more
doaj   +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 dynamics and geodesy [PDF]

Both completed work and work that is still in progress are presented. The completed work presented includes: (1) core-mantle boundary topography; (2) absolute value for mantle viscosity; (3) code development; (4) lateral heterogeneity of subduction zone ...
Albee, Arden
core   +1 more source

Partially molten plumes and magma fingers: two modes of melt transport through the mantle in terrestrial bodies

Earth, Planets and Space
The dynamics of partially molten mantle are central to the thermochemical evolution of terrestrial bodies, and partially molten plumes driven by melt buoyancy have been recognized as a crucial ingredient.
Ken’yo U, Masanori Kameyama, Takehiro Miyagoshi, Takatoshi Yanagisawa, Masaki Ogawa   +4 more
doaj   +1 more source

Recycled Components in Mantle Plumes Deduced From Variations in Halogens (Cl, Br, and I), Trace Elements, and ³He/⁴He Along the Hawaiian-Emperor Seamount Chain. [PDF]

Geochem Geophys Geosyst, 2019
Broadley MW, Sumino H, Graham DW, Burgess R, Ballentine CJ.   +4 more
europepmc   +1 more source

Deep mantle plumes feeding periodic alignments of asthenospheric fingers beneath the central and southern Atlantic Ocean. [PDF]

Proc Natl Acad Sci U S A
Munch FD, Romanowicz B, Mukhopadhyay S, Rudolph ML.   +3 more
europepmc   +1 more source

Bilateral Loa-Kea trends of the Hawaiian Islands caused by the bottom-up splitting of plume conduit. [PDF]

Sci Adv
Zhang J, Hu J, Wang K.
europepmc   +1 more source