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Titolo:
En echelon volcanic elongate ridges connecting intraplate Foundation Chainvolcanism to the Pacific-Antarctic spreading center (vol 189, pg 93, 2001)
Autore:
OConnor, JM; Stoffers, P; Wijbrans, JR;
Indirizzi:
Univ Kiel, GEOMAR, D-24148 Kiel, Germany Univ Kiel Kiel Germany D-24148Univ Kiel, GEOMAR, D-24148 Kiel, Germany Univ Kiel, Inst Geosci, D-24118 Kiel, Germany Univ Kiel Kiel Germany D-24118 Kiel, Inst Geosci, D-24118 Kiel, Germany Free Univ Amsterdam, Dept Isotope Geochem, NL-1081 HV Amsterdam, Netherlands Free Univ Amsterdam Amsterdam Netherlands NL-1081 HV terdam, Netherlands
Titolo Testata:
EARTH AND PLANETARY SCIENCE LETTERS
fascicolo: 4, volume: 192, anno: 2001,
pagine: 631 -
SICI:
0012-821X(20011115)192:4<631:EEVERC>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEAMOUNT CHAIN; HOTSPOT INTERACTION; MANTLE; PLUMES;
Keywords:
spreading centers; hot spots; mantle plumes; Pacific-Antarctic Ridge; Ar-40/Ar-39;
Tipo documento:
Correction, Addition
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: O'Connor, JM Univ Kiel, GEOMAR, Wischhofstr 1-3, D-24148 Kiel, Germany Univ Kiel Wischhofstr 1-3 Kiel Germany D-24148 Kiel, Germany
Citazione:
J.M. O'Connor et al., "En echelon volcanic elongate ridges connecting intraplate Foundation Chainvolcanism to the Pacific-Antarctic spreading center (vol 189, pg 93, 2001)", EARTH PLAN, 192(4), 2001, pp. 631

Abstract

The development of volcanic elongate ridges (VERs) could be controlled in many cases by complex processes related to interaction between mantle plumes and spreading centers. We report here measured ages for the Foundation Chain, SE Pacific, showing that volcanism along morphologically distinct VERscan develop occasionally as rapidly formed continuous lines of coeval volcanism extending from a region of intraplate volcanism to the Pacific-Antarctic spreading center. But a significantly more dominant trend is for coeval, yet structurally disconnected, segments of Foundation Chain VERs to develop in a series of en echelon, NE-SW elongate 'zones' of coeval hotspot volcanism, These elongate zones developed at intervals of approximately 1 Myr while maintaining a basically steady state orientation and size as the Pacific-Antarctic spreading center migrated continually closer to the Foundationplume hotspot. We infer from this new information that Foundation Chain VER development was controlled by an interplay between short-lived, local factors (e.g., location of nearest spreading center segment, lithospheric stress) and long-lived attributes of the Foundation plume hotspot (e.g., size, orientation, periodicity). (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 04:12:52