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 |
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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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