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10Be application to soil development on Marion Island, southern Indian Ocean
Department of Conservation Ecology and Entomology, Stellenbosch University, South Africa.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
2010 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 268, no 7-8, 1058-1061 p.Article in journal (Refereed) Published
Abstract [en]

Marion Island, located in the southern Indian Ocean, constitutes the summit of an active shield volcano. It is a small terrestrial environment where glacially abraded bedrock became exposed c × 10 kyr ago. These conditions provide an interesting possibility for the assessment of 10Be accumulation rates and their application to soil erosion studies on the island. 10Be concentrations were measured in precipitation, soil profiles and an Azorella selago cushion plant. The data reveal a 10Be precipitation flux several times higher than model prediction. Estimation of the 10Be accumulation based on the soil inventory suggests a span between 2000 and 7000 yr. This time span is not in accordance with the accepted notion that the island was covered with ice about 10,000 yr ago and suggests either removal of 10Be from the soil profile, an overestimated Holocene 10Be-flux or a delayed soil development history. Our results provide new data on 10Be concentrations from the sub-Antarctic islands and contribute towards enlarging the southern-hemisphere 10Be database.

Place, publisher, year, edition, pages
2010. Vol. 268, no 7-8, 1058-1061 p.
Keyword [en]
10Be; Sub-Antarctic; Azorella selago
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-129161DOI: 10.1016/j.nimb.2009.10.097ISI: 000277462300092OAI: oai:DiVA.org:uu-129161DiVA: diva2:332448
Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Aldahan, AlaBoelhouwers, Jan

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