^1,2Malgorzata U. Sliz,^2,3Beda A. Hofmann,¹Ingo Leya,⁴Sönke Szidat,⁵Christophe Espic,⁵Jérôme Gattacceca,⁵Régis Braucher,⁵Daniel Borschneck,⁶Edwin Gnos,⁵ASTER Team
Meteoritics & Planetary Science (in Press) Open Access Link to Article [https://doi.org/10.1111/maps.13922]
¹Space Research and Planetary Sciences, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
²Natural History Museum Bern, Bernastrasse 15, 3005 Bern, Switzerland
³Institute of Geological Sciences, University of Bern, Baltzerstrasse 1+3, 3005 Bern, Switzerland
⁴Department of Chemistry and Biochemistry & Oeschger Center for Climate Change Research, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
⁵CNRS, Aix Marseille Univ, IRD, INRAE, CEREGE, Aix-en-Provence, France
⁶Natural History Museum of Geneva, Route de Malagnou 1, 1208 Geneva, Switzerland
Published by arrangement with John Wiley & Sons

Through the investigation of terrestrial ages of meteorites from Oman, we aim to better understand the time scales of meteorite accumulation and erosion in Oman and the meteorite flux in the past. Here, we present 14C and 14C-10Be terrestrial ages of seven ordinary chondrite strewn fields and two unpaired single meteorites from the Sultanate of Oman. After critical evaluation of multiple data for each strewn field, we propose “best estimate terrestrial ages,” typically based on 14C/10Be. For objects for which complex irradiation histories are known or suspected, terrestrial ages were calculated solely using 14C. The best estimate strewn field ages range from 8.1 ± 3.0 ka (SaU 001) to 35.2 ± 5.1 ka (Dho 005). Including two previously dated strewn fields, the mean and median age of nine Oman strewn fields is 15.9 ± 12.3 and 13.6 ka, respectively. The new data show a general good agreement with data previously obtained in a different laboratory, and we observe a similar general correlation between strewn field ages and mean weathering grade as in previous work based on individual meteorites. Weathering degree W4 is reached for dated samples after 20–35 ka. While the age statistics of strewn fields does not show the previously observed lack of young events, the low abundance of young (0–5 ka) individual meteorites as compared with older (~20 ka) meteorites is confirmed by our data and remains unexplained.