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Measuring timescales of magmatic evolution

Simon Turner and Fidel Costa
Measuring timescales of magmatic evolution (in Frontiers in textural and microgeochemical analysis, Dougal A. Jerram (editor) and Jon P. Davidson (editor))
Elements (August 2007) 3 (4): 267-272

Abstract

Advances in analytical methods have provided new insights into the timescales of magmatic processes. Data on the abundances of U-series isotopes in bulk rocks and crystal separates indicate magma differentiation over thousands of years. Residence and differentiation times of silicic magmas based on single-crystal, in situ age data vary from 10,000 to 100,000 years, with abundant evidence for crystal recycling from previous intrusive episodes. Chemical zoning patterns in single crystals indicate that processes such as mixing and mingling of magmas and crustal assimilation may occur over much shorter timescales of months to decades. Quantifying the rates of magma generation, emplacement and differentiation constrains the processes involved and may contribute to the evaluation of volcanic hazards.


ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 3
Serial Issue: 4
Title: Measuring timescales of magmatic evolution
Title: Frontiers in textural and microgeochemical analysis
Author(s): Turner, SimonCosta, Fidel
Author(s): Jerram, Dougal A.editor
Author(s): Davidson, Jon P.editor
Affiliation: Macquarie University, Department of Earth and Planetary Sciences, Sydney, N.S.W., Australia
Affiliation: Durham University, Department of Earth Sciences, Durham, United Kingdom
Pages: 267-272
Published: 200708
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 40
Accession Number: 2008-024049
Categories: Igneous and metamorphic petrologyGeochronology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: CSIC Institut de Ciencies de la Terra Jaume Almera, ESP, Spain
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200808
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