Authors / CoAuthors
Sohn, J. | Boreham, C. | Chen, J. | Wintle, C. | Mernagh, T.P. | Dawson, G.K.W. | Golding, S.D.
Abstract
The chemical and isotopic composition of volatiles trapped in fluid inclusions provides valuable information in the formation and evolution of not only natural gases, but also sedimentary basin's fluid history. However, one of the critical issues is the difficult process in determining the isotopic composition of inclusion gases. This is mainly due to the low concentrations of gas components in the inclusions and lack of reliable process to extract and pre-concentrate the trace gas components without isotopic fractionation. Recently, the carbon isotopic compositions of fluid inclusion gases were measured in-line using an EA-IRMS and a GC-IRMS. In this study we use a hydraulic pressure crusher cell in line with a GC-IRMS. The system is designed to crush (routinely at 2500 psi) up to 2g rock samples (>0.3mm) to give a grain size distribution with a sub-micron tail, effectively decrepitating a high proportion of the fluid inclusions.
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nonGeographicDataset
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82276
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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- External PublicationAbstract
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2014-01-01T00:00:00
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