Cosmogenic 21Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

D. Gillen; M. Honda; A. R. Chivas; I. Yatsevich; D. B. Patterson; P. F. Carr

doi:10.1016/j.quageo.2009.08.004

Cosmogenic ²¹Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

D. Gillen, M. Honda^*, A. R. Chivas, I. Yatsevich, D. B. Patterson, P. F. Carr

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

Cosmogenic ²¹Ne was utilised to determine exposure ages of young subaerial basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia. The ages (36-53 ka) determined from co-existing cosmogenic ²¹Ne and ³He in olivines separated from basalts are consistent within analytical uncertainties with ages previously determined by cosmogenic ³⁶Cl exposure dating. This paper illustrates the potential of cosmogenic neon exposure ages in studying the eruption, surface morphology, and erosion history of young volcanic rocks, which are difficult to date using other conventional methods, such as K-Ar or ⁴⁰Ar/³⁹Ar dating. The present study demonstrates that combined cosmogenic ³He and ²¹Ne dating, specifically measured cosmogenic ³He/²¹Ne ratios, on the same samples, is powerful for evaluating the validity of calculated cosmogenic ³He and ²¹Ne surface exposure ages.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	Quaternary Geochronology
Volume	5
Issue number	1
DOIs	https://doi.org/10.1016/j.quageo.2009.08.004
Publication status	Published - Feb 2010

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title = "Cosmogenic 21Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia",

abstract = "Cosmogenic 21Ne was utilised to determine exposure ages of young subaerial basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia. The ages (36-53 ka) determined from co-existing cosmogenic 21Ne and 3He in olivines separated from basalts are consistent within analytical uncertainties with ages previously determined by cosmogenic 36Cl exposure dating. This paper illustrates the potential of cosmogenic neon exposure ages in studying the eruption, surface morphology, and erosion history of young volcanic rocks, which are difficult to date using other conventional methods, such as K-Ar or 40Ar/39Ar dating. The present study demonstrates that combined cosmogenic 3He and 21Ne dating, specifically measured cosmogenic 3He/21Ne ratios, on the same samples, is powerful for evaluating the validity of calculated cosmogenic 3He and 21Ne surface exposure ages.",

keywords = "Cosmogenic Ne & He, Noble gases, Olivine, Surface exposure dating",

author = "D. Gillen and M. Honda and Chivas, {A. R.} and I. Yatsevich and Patterson, {D. B.} and Carr, {P. F.}",

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doi = "10.1016/j.quageo.2009.08.004",

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T1 - Cosmogenic 21Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

AU - Gillen, D.

AU - Honda, M.

AU - Chivas, A. R.

AU - Yatsevich, I.

AU - Patterson, D. B.

AU - Carr, P. F.

PY - 2010/2

Y1 - 2010/2

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AB - Cosmogenic 21Ne was utilised to determine exposure ages of young subaerial basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia. The ages (36-53 ka) determined from co-existing cosmogenic 21Ne and 3He in olivines separated from basalts are consistent within analytical uncertainties with ages previously determined by cosmogenic 36Cl exposure dating. This paper illustrates the potential of cosmogenic neon exposure ages in studying the eruption, surface morphology, and erosion history of young volcanic rocks, which are difficult to date using other conventional methods, such as K-Ar or 40Ar/39Ar dating. The present study demonstrates that combined cosmogenic 3He and 21Ne dating, specifically measured cosmogenic 3He/21Ne ratios, on the same samples, is powerful for evaluating the validity of calculated cosmogenic 3He and 21Ne surface exposure ages.

KW - Cosmogenic Ne & He

KW - Noble gases

KW - Olivine

KW - Surface exposure dating

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Cosmogenic ²¹Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

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