Ar-Ar age constraints on the timing of Havre Trough opening and magmatism.

Wysoczanski, Richard , Leonard, Graham, Gill, James, Wright, Ian , Calvert, Andrew, McIntosh, William, Jicha, Brian, Gamble, John, Timm, Christian , Handler, Monica , Drewes-Todd, Elizabeth and Zohrab, Alex (2019) Ar-Ar age constraints on the timing of Havre Trough opening and magmatism. Open Access New Zealand Journal of Geology and Geophysics, 62 (3). pp. 371-377. DOI 10.1080/00288306.2019.1602059.

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Abstract

The age and style of opening of the Havre Trough back-arc system is uncertain due to a lack of geochronologic constraints for the region. 40Ar/39Ar dating of 19 volcanic rocks from across the southern Havre Trough and Kermadec Arc was conducted in three laboratories to provide age constraints on the system. The results are integrated and interpreted as suggesting that this subduction system is young (<2 Ma) and coeval with opening of the continental Taupo Volcanic Zone of New Zealand. Arc magmatism was broadly concurrent across the breadth of the Havre Trough.

Document Type: Article
Funder compliance: info:eu-repo/grantAgreement/EC/H2020/79308
Keywords: Havre Trough, Kermadec Arc, Ar-Ar, magmatism, back-arc basin, rifting
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS
Refereed: Yes
Open Access Journal?: No
Publisher: Royal Society of New Zealand
Projects: GoldTrace
Date Deposited: 02 Jul 2019 12:03
Last Modified: 31 Jan 2022 09:20
URI: https://oceanrep.geomar.de/id/eprint/47068

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