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Microsampling and isotopic analysis of igneous rocks: implications for the study of magmatic systems

Davidson, J. P.; Morgan, D. M.; Charlier, B. L. A.; Harlou, R. and Hora, J .M. (2007). Microsampling and isotopic analysis of igneous rocks: implications for the study of magmatic systems. Annual Review of Earth and Planetary Sciences, 35 pp. 273–311.

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Isotopic fingerprinting has long been used to trace magmatic processes and the components that contribute to magmas. Recent technological improvements have provided an opportunity to analyze isotopic compositions on the scale of individual crystals, and consequently to integrate isotopic and geochemical tracing with textural and petrographic observations. It has now become clear that mineral phases are commonly not in isotopic equilibrium with their host glass/groundmass. Isotopic ratios recorded from core to rim of a mineral grain reflect the progressive changes in the magma composition from which the mineral crystallized. The sense of these changes and the relationship between isotopic composition and petrographic features, such as dissolution surfaces, can be used to constrain magma evolution pathways involving open system processes such as magma mixing, contamination and recharge.

Item Type: Journal Item
Copyright Holders: 2007 Annual Reviews.
ISSN: 1545-4495
Keywords: crystal isotope stratigraphy; melt inclusions; recharge; contamination; Sr isotopes
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 9162
Depositing User: Bruce Charlier
Date Deposited: 21 Sep 2007
Last Modified: 07 Dec 2018 09:06
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