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Science 23 September 2005:
Vol. 309. no. 5743, pp. 2048 - 2051
DOI: 10.1126/science.1116034
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Reports

Dating of Multistage Fluid Flow in Sandstones

Darren F. Mark,1* John Parnell,1 Simon P. Kelley,2 Martin Lee,3 Sarah C. Sherlock,2 Andrew Carr4

Through ultraviolet laser argon-argon dating of potassium feldspar cements containing fluid inclusions, we determined temperature-composition-time data for paleofluids in a sedimentary basin, including data for an evolving episode of fluid flow recorded in distinct phases of cement. The fluid evolved from mixed aqueous oil 83 million years ago to purely aqueous by 76 million years ago, thus dating the time of oil charge in this reservoir.

1 Department of Geology and Petroleum Geology, Meston Building, Meston Walk, University of Aberdeen, Aberdeen, AB24-3UE, UK.
2 Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR), Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, MK7-6AA, UK.
3 Division of Earth Sciences, Centre for Geosciences, Lilybank Gardens, University of Glasgow, Glasgow, G12-8QQ, UK.
4 Advanced Geochemical Systems Ltd., Towles Fields, Burton on the Wolds, Leicestershire, LE12-5TD, UK.

* To whom correspondence should be addressed. E-mail: d.mark{at}abdn.ac.uk

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Resolution of regional fluid flow related to successive orogenic events on the Laurentian margin.
D. F. Mark, J. Parnell, S. P. Kelley, and S. C. Sherlock (2007)
Geology 35, 547-550
   Abstract »    Full Text »    PDF »
Reflectance spectroscopic mapping of diagenetic heterogeneities and fluid-flow pathways in the Jurassic Navajo Sandstone.
B. B. Bowen, B. A. Martini, M. A. Chan, and W. T. Parry (2007)
AAPG Bulletin 91, 173-190
   Abstract »    Full Text »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)