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Titolo:
Provenance of Proterozoic garnet-biotite gneiss recovered from Elan Bank, Kerguelen Plateau, southern Indian Ocean
Autore:
Nicolaysen, K; Bowring, S; Frey, F; Weis, D; Ingle, S; Pringle, MS; Coffin, MF;
Indirizzi:
Free Univ Brussels, Dept Earth & Environm Sci, B-1050 Brussels, Belgium Free Univ Brussels Brussels Belgium B-1050 Sci, B-1050 Brussels, Belgium Scottish Univ Environm Res Ctr, E Kilbride G75 0QF, Lanark, Scotland Scottish Univ Environm Res Ctr E Kilbride Lanark Scotland G75 0QF cotland Univ Texas, Inst Geophys, Austin, TX 78759 USA Univ Texas Austin TX USA 78759 Texas, Inst Geophys, Austin, TX 78759 USA MIT, Cambridge, MA 02140 USA MIT Cambridge MA USA 02140MIT, Cambridge, MA 02140 USA
Titolo Testata:
GEOLOGY
fascicolo: 3, volume: 29, anno: 2001,
pagine: 235 - 238
SICI:
0091-7613(200103)29:3<235:POPGGR>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
U-PB; BROKEN RIDGE; EVOLUTION; HOTSPOT; GEOCHEMISTRY; AUSTRALIA; PETROLOGY; MAGMATISM; BOUNDARY; BENGAL;
Keywords:
Kerguelen Plateau; geochronology; continental crust; Proterozoic; Indian Ocean;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Nicolaysen, K Lawrence Univ, Dept Geol, Appleton, WI 54912 USA Lawrence Univ Appleton WI USA 54912 Appleton, WI 54912 USA
Citazione:
K. Nicolaysen et al., "Provenance of Proterozoic garnet-biotite gneiss recovered from Elan Bank, Kerguelen Plateau, southern Indian Ocean", GEOLOGY, 29(3), 2001, pp. 235-238

Abstract

At Elan Bank of the Kerguelen Plateau in the southeast Indian Ocean, Leg 183 of the Ocean Drilling Program recovered clasts of garnet-biotite gneiss in a fluvial conglomerate intercalated with basalt flows. U-Pb and Ph-Ph dates of zircons and monazites in these clasts and an overlying sandstone range from 534 to 2547 Ma, which is much older than the surrounding Indian Ocean seafloor. These dates show that old continental crust resides in the shallow crust of the oceanic Kerguelen Plateau and that the breakup of Gondwana dispersed continental fragments into the nascent Indian Ocean lithosphere.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 23:33:10