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Titolo:
Change of tectono-stratigraphic regime in the Australian plate during the 99 Ma (mid-Cretaceous) and 43 Ma (mid-Eocene) swerves of the Pacific
Autore:
Veevers, JJ;
Indirizzi:
Macquarie Univ, Dept Earth & Planetary Sci, Australian Plate Res Grp, Sydney, NSW 2109, Australia Macquarie Univ Sydney NSW Australia 2109 Grp, Sydney, NSW 2109, Australia Macquarie Univ, Dept Earth & Planetary Sci, Key Ctr Geochem Evolut & Metallogeny Continents, Sydney, NSW 2109, Australia Macquarie Univ Sydney NSW Australia 2109 nts, Sydney, NSW 2109, Australia
Titolo Testata:
GEOLOGY
fascicolo: 1, volume: 28, anno: 2000,
pagine: 47 - 50
SICI:
0091-7613(200001)28:1<47:COTRIT>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEW-ZEALAND; MOTION; HISTORY; AGE;
Keywords:
Australia; mid-Cretaceous; mid-Eocene; Pacific; hotspot bends;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Veevers, JJ Macquarie Univ, Dept Earth & Planetary Sci, Australian Plate Res Grp, Sydney, NSW 2109, Australia Macquarie Univ Sydney NSW Australia 2109 NSW 2109, Australia
Citazione:
J.J. Veevers, "Change of tectono-stratigraphic regime in the Australian plate during the 99 Ma (mid-Cretaceous) and 43 Ma (mid-Eocene) swerves of the Pacific", GEOLOGY, 28(1), 2000, pp. 47-50

Abstract

The clockwise bend at 99 Ma (mid-Cretaceous) in linear volcanic chains in the tropical Pacific coincides with a change from pre-99 Ma head-on Chilean-type subduction of the Pacific plate beneath eastern Gondwana to 99-43 Ma sinistral oblique Mariana-type subduction and strike-slip breakup by simplesea-floor spreading between Australia and Antarctica and by backarc spreading in the southwest Pacific. The 99 Ma breakup of Australia from Antarctica is documented by a mid-Cretaceous unconformity, This tectono-stratigraphic change founded modern Australia, with a mountain chain along an upper plate margin in the east and lowlands on the lower plate margin in the south. The counterclockwise bend at 43 Ma (mid-Eocene)-the Emperor-Hawaiian bend-coincides with the onset of structure in the Challenger Rift of New Zealand,the Eromanga-Cooper basin of central Australia, and the oil-shale grabens of coastal Queensland.

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Documento generato il 04/04/20 alle ore 20:48:53