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Age, distance, and geochemical evolution within a monogenetic volcanic field : Analyzing patterns in the Auckland Volcanic Field eruption sequence
Indexado
WoS WOS:000326247700021
Scopus SCOPUS_ID:84886662509
DOI 10.1002/GGGE.20223
Año 2013
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



The Auckland Volcanic Field (AVF) is a young active monogenetic basaltic field, which contains approximate to 50 volcanoes scattered across the Auckland metropolitan area. Understanding the temporal, spatial, and chemical evolution of the AVF during the last c.a. 250 ka is crucial in order to forecast a future eruption. Recent studies have provided new age constraints and potential temporal sequences of the past eruptions within the AVF. We use this information to study how the spatial distribution of the volcanic centers evolves with time, and how the chemical composition of the erupted magmas evolves with time and space. We seek to develop a methodology which compares successive eruptions to describe the link between geochemical and spatiotemporal evolution of volcanic centers within a monogenetic volcanic field. This methodology is tested with the present day data of the AVF. The Poisson nearest neighbor analysis shows that the spatial behavior of the field has been constant overtime, with the spatial distribution of the volcanic centers fitting the Poisson model within the significance levels. The results of the meta-analysis show the existence of correlations between the chemical composition of the erupted magmas and distance, volume, and time. The apparent randomness of the spatiotemporal evolution of the volcanic centers observed at the surface is probably influenced by the activity of the source. The methodology developed in this study can be used to identify possible relationships between composition trends and volume, time and/or distance to the behavior of the source, for successive eruptions of the AVF.

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Disciplinas de Investigación



WOS
Geochemistry & Geophysics
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Le Corvec, Nicolas Hombre UNIV AUCKLAND - Nueva Zelanda
University of Auckland - Nueva Zelanda
LPI - Estados Unidos
The University of Auckland - Nueva Zelanda
2 Bebbington, Mark S. Hombre Massey Univ - Nueva Zelanda
Massey University Manawatu - Nueva Zelanda
Massey University - Nueva Zelanda
3 Lindsay, Jan M. Hombre UNIV AUCKLAND - Nueva Zelanda
University of Auckland - Nueva Zelanda
The University of Auckland - Nueva Zelanda
4 McGee, Lucy Emma Mujer UNIV AUCKLAND - Nueva Zelanda
Universidad de Chile - Chile
University of Auckland - Nueva Zelanda
The University of Auckland - Nueva Zelanda

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Financiamiento



Fuente
NZ Earthquake Commission (EQC)
Auckland Council

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Agradecimientos



Agradecimiento
We would like to thank Marco Brenna, Bruce W. Hayward, Bernhard K. Sporli, and Julie V. Rowland for helpful comments on the manuscript. Georg Zellmer and two anonymous reviewers contributed many valuable suggestions for improving the content and structure of the original manuscript. This work was carried out as part of the DEVORA (Determining VOlcanic Risk in Auckland) project cofunded by the NZ Earthquake Commission (EQC) and the Auckland Council.

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