ScholarSpace will be down for maintenance on Thursday (8/16) at 8am HST (6pm UTC)
Please use this identifier to cite or link to this item: http://hdl.handle.net/10125/41149

Double layering of a thermochemical plume in the upper mantle beneath Hawaii

Full Item Record

DC FieldValueLanguage
dc.contributor.authorBallmer, Maxim D.-
dc.contributor.authorIto, Garrett-
dc.contributor.authorWolfe, Cecily J.-
dc.contributor.authorSolomon, Sean C.-
dc.date.accessioned2016-07-01T02:01:46Z-
dc.date.available2016-07-01T02:01:46Z-
dc.date.issued2013-06-
dc.identifier.urihttp://hdl.handle.net/10125/41149-
dc.description.abstractAccording to classical plume theory, purely thermal upwellings rise through the mantle, pond in a thin layer beneath the lithosphere, and generate hotspot volcanism. Neglected by this theory, however, are the dynamical effects of compositional heterogeneity carried by mantle plumes even though this heterogeneity has been commonly identified in sources of hotspot magmas. Numerical models predict that a hot, compositionally heterogeneous mantle plume containing a denser eclogite component tends to pool at ∼300–410 km depth before rising to feed a shallower sublithospheric layer. This double-layered structure of a thermochemical plume is more consistent with seismic tomographic images at Hawaii than the classical plume model. The thermochemical structure as well as time dependence of plume material rising from the deeper into the shallower layer can further account for long-term fluctuations in volcanic activity and asymmetry in bathymetry, seismic structure, and magma chemistry across the hotspot track, as are observed.en_US
dc.format.extent10 pagesen_US
dc.language.isoen-USen_US
dc.publisherElsevieren_US
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0012821X13003385en_US
dc.rights© 2013 Elsevier B.V. All rights reserved.en_US
dc.subjectintraplate volcanismen_US
dc.subjectthermochemical mantle plumeen_US
dc.subjectseismic resolution testen_US
dc.subjectHawaiien_US
dc.subjecthotspoten_US
dc.titleDouble layering of a thermochemical plume in the upper mantle beneath Hawaiien_US
dc.typeArticleen_US
dc.type.dcmiTexten_US
dc.identifier.doi10.1016/j.epsl.2013.06.022-
Appears in Collections:SOEST Faculty & Researcher Works


Please email libraryada-l@lists.hawaii.edu if you need this content in an ADA-compliant format.

Items in ScholarSpace are protected by copyright, with all rights reserved, unless otherwise indicated.