Results 131 to 140 of about 17,487 (279)

Geodynamic Models of Melt Generation and Extraction at Mid-Ocean Ridges [PDF]

Oceanography, 2012
It is widely accepted that plate divergence at mid-ocean ridges drives mantle flow, mantle melting, and the formation of new oceanic crust. However, many of the details of this process remain obscure because of the inaccessibility of the mantle to direct
Patricia M. Gregg, Laura B. Hebert, Laurent G.J. Montési, Richard F. Katz   +3 more
doaj  

Modelling the controls on melt generation during continental extension and breakup

, 2008
Rifting is the process that leads to the formation of oceans. Rifting is the break up ofcontinents, leading to the formation of new oceanic floor between the two continentalplates.
Armitage, John J, Armitage, John J.
core  

Multiscale chemical heterogeneities beneath the eastern Southwest Indian Ridge (52°E–68°E): Trace element compositions of along‐axis dredged peridotites

Geochemistry, Geophysics, Geosystems, 2011
The Southwest Indian Ridge is characterized by frequent outcrops of mantle rocks in a very slow spreading context. In situ measurements of trace element concentrations in pyroxenes of these rocks, and associated petrogenetic modeling, are reported ...
Monique Seyler, Daniele Brunelli, Michael J. Toplis, Catherine Mével   +3 more
doaj   +1 more source

Petrogenetic Evolution, Geometries and Intrusive Styles of the Early Cenozoic Saucer-Shaped Sills of the Faroe Islands [PDF]

, 2011
Geometries of sills intruded into the lava pile of the Faroe Island Basalt Group (FIBG), which were targeted in this study, were mostly recorded by conventional mapping methods where measured distances and positions were plotted onto accurate topographic
HANSEN, JOGVAN
core  

Hydrous multi-stage mantle melting controls gold enrichment in mafic Kermadec arc magmas

Communications Earth & Environment
Many exceptionally Au-rich deposits are associated with subduction zones and Au-rich magmas. However, the origin of Au enrichment in arc magmas remains controversial.
Christian Timm, Maxim Portnyagin, Cornel E. J. de Ronde, Mark D. Hannington, Dieter Garbe-Schönberg, Kaj Hoernle, Philipp A. Brandl, Dan Layton-Matthews, Matthew Leybourne, Nadezhda M. Sushchevskaya, Rex N. Taylor, Richard J. Arculus   +11 more
doaj   +1 more source

Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics

, 2006
Anorogenic intra-plate magmatism was widespread in Europe from early Tertiary to Recent times, extending west to east from Spain to Bulgaria, and south to north from Sicily to northern Germany. Magmatism is spatially and temporally associated with Alpine-
Wilson, M., Downes, Hilary
core  

Geochemistry of volcanic rocks from the Sunda Arc [PDF]

, 2013
Geochemical analyses of igneous rocks can provide valuable information about processes, element fluxes, and rock lithologies not evident at the surface.
DEMPSEY, SCOTT,ROBERT
core  

Evidence for melting mud in Earth's mantle from extreme oxygen isotope signatures in zircon

, 2017
© 2017 Geological Society of America. Melting of subducted sediment remains controversial, as direct observation of sediment melt generation at mantle depths is not possible.
McDonald, B., T.D. Raub, Rollinson, H, Searle, M., M.P. Searle, Cavosie, AJ, Spencer, C. J., A.J. Cavosie, H. Jeon, Raub, T. D., Spencer, C, Cavosie, A. J., McDonald, Bradley J., Miller, J. A., Raub, T., Cavosie, Aaron J., N.J. Evans, Rollinson, Hugh, Searle, Michael P., Cavosie, A., Searle, MP, McDonald, BJ, Searle, Michael, H. Rollinson, Evans, N. J., Miller, JA, Rollinson, H., Evans, Noreen, Spencer, C., Jeon, H., Evans, Noreen J., Raub, Timothy D., Jeon, H, Searle, M. P., C.J. Spencer, Edinburgh Ion Microprobe Facility, Evans, NJ, McDonald, B. J., Edinburgh Ion Microprobe Facility, Edinburgh Ion Microprobe, J.A. Miller, null null, B.J. McDonald, Miller, Jodie A., Spencer, Christopher J., Miller, J., Raub, TD, Jeon, Heejin   +46 more
core   +1 more source

Life on Mars? The physiological perspective

Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

The redox geodynamics linking basalts and their mantle sources through space and time

, 2015
International audienceThe Earth's mantle redox state regulates the fate and transfer of metals by magmatism, buffers the igneous inputs of volcanic gases in the atmosphere and controls the depth of mantle melting.
Gaillard, Fabrice, Pichavant, Michel, Scaillet, Bruno, Iacono-Marziano, Giada   +3 more
core   +1 more source