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

Richard J. Wysoczanski; Graham S. Leonard; James Gill; Ian C. Wright; Andrew T. Calvert; William C. McIntosh; Brian  Jicha; John Gamble; Christian Timm; Monica Handler; Elizabeth  Drewes-Todd; Alex  Zohrab

doi:10.1080/00288306.2019.1602059

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

Richard J. Wysoczanski
, Graham S. Leonard
, James Gill
, Ian C. Wright
, Andrew T. Calvert
, William C. McIntosh
, Brian Jicha
, John Gamble
, Christian Timm
, Monica Handler
, Elizabeth Drewes-Todd
, Alex Zohrab

School of Biological, Earth and Environmental Sciences

NIWA
GNS Science
New Mexico Institute of Mining and Technology
University of Wisconsin-Madison
Victoria University of Wellington
Alaska Science Center, Anchorage

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (Ireland)
Pages (from-to)	371-377
Number of pages	8
Journal	New Zealand Journal of Geology and Geophysics
Volume	62
Issue number	3
DOIs	https://doi.org/10.1080/00288306.2019.1602059
Publication status	Published - Jun 2019

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10.1080/00288306.2019.1602059

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title = "Ar-Ar age constraints on the timing of Havre Trough opening and magmatism",

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.",

author = "Wysoczanski, \{Richard J.\} and Leonard, \{Graham S.\} and James Gill and Wright, \{Ian C.\} and Calvert, \{Andrew T.\} and McIntosh, \{William C.\} and Brian Jicha and John Gamble and Christian Timm and Monica Handler and Elizabeth Drewes-Todd and Alex Zohrab",

year = "2019",

month = jun,

doi = "10.1080/00288306.2019.1602059",

language = "English (Ireland)",

volume = "62",

pages = "371--377",

journal = "New Zealand Journal of Geology and Geophysics",

issn = "0028-8306",

publisher = "John Wiley and Sons Inc",

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TY - JOUR

T1 - Ar-Ar age constraints on the timing of Havre Trough opening and magmatism

AU - Wysoczanski, Richard J.

AU - Leonard, Graham S.

AU - Gill, James

AU - Wright, Ian C.

AU - Calvert, Andrew T.

AU - McIntosh, William C.

AU - Jicha, Brian

AU - Gamble, John

AU - Timm, Christian

AU - Handler, Monica

AU - Drewes-Todd, Elizabeth

AU - Zohrab, Alex

PY - 2019/6

Y1 - 2019/6

N2 - 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.

AB - 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.

U2 - 10.1080/00288306.2019.1602059

DO - 10.1080/00288306.2019.1602059

M3 - Article

SN - 0028-8306

VL - 62

SP - 371

EP - 377

JO - New Zealand Journal of Geology and Geophysics

JF - New Zealand Journal of Geology and Geophysics

IS - 3

ER -

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

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