3He,20,21,22Ne,14C,10Be,26Al, and36Cl in magnetic fractions of cosmic dust from Greenland and Antarctica

Jull, A. J. T. et al. (2007) 3He,20,21,22Ne,14C,10Be,26Al, and36Cl in magnetic fractions of cosmic dust from Greenland and Antarctica. Meteoritics and Planetary Science, 42(10), pp. 1831-1840. (doi:10.1111/j.1945-5100.2007.tb00541.x)

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Abstract

We report on studies of the concentrations of cosmogenic nuclides in the magnetic fraction of cosmic dust particles recovered from the South Pole Water Well (SPWW) and from Greenland. Our results confirm that cosmic dust material from these locations contains measurable amounts of cosmogenic nuclides. The Antarctic particles (and possibly those from Greenland as well) also contain minor amounts of solar Ne. Concentrations of cosmogenic nuclides are consistent with irradiation of this material as small objects in space, with exposure ages similar to the expected Poynting-Robertson (P-R) lifetimes of 50–200 kyr for particles 25–100 μm in size.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Schnabel, Dr Christoph and Xu, Dr Sheng and Freeman, Professor Stewart and McHargue, Dr Lanny
Authors: Jull, A. J. T., Lal, D., Taylor, S., Wieler, R., Grimberg, A., Vacher, L., McHargue, L.R., Freeman, S.P.H.T., Maden, C., Schnabel, C., Xu, S., Finkel, R. C., Kim, K. J., and Marti, K.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Meteoritics and Planetary Science
Publisher:John Wiley and Sons
ISSN:1086-9379
ISSN (Online):1945-5100

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