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

New Zealand Journal of Geology and Geophysics
By: , and 

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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.

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Publication type Article
Publication Subtype Journal Article
Title Ar-Ar age constraints on the timing of Havre Trough opening and magmatism
Series title New Zealand Journal of Geology and Geophysics
DOI 10.1080/00288306.2019.1602059
Volume 62
Issue 3
Year Published 2019
Language English
Publisher Royal Society of New Zealand
Contributing office(s) Volcano Science Center
Description 7 p.
First page 371
Last page 377
Country New Zealand
Other Geospatial Kermadec Arc–Havre Trough
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