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dc.contributor.authorUnsalan, O. and Jenniskens, P. and Yin, Q.-Z. and Kaygisiz, E. and Albers, J. and Clark, D.L. and Granvik, M. and Demirkol, I. and Erdogan, I.Y. and Bengu, A.S. and Özel, M.E. and Terzioglu, Z. and Gi, N. and Brown, P. and Yalcinkaya, E. and Temel, T. and Prabhu, D.K. and Robertson, D.K. and Boslough, M. and Ostrowski, D.R. and Kimberley, J. and Er, S. and Rowland, D.J. and Bryson, K.L. and Altunayar-Unsalan, C. and Ranguelov, B. and Karamanov, A. and Tatchev, D. and Kocahan, Ö. and Oshtrakh, M.I. and Maksimova, A.A. and Karabanalov, M.S. and Verosub, K.L. and Levin, E. and Uysal, I. and Hoffmann, V. and Hiroi, T. and Reddy, V. and Ildiz, G.O. and Bolukbasi, O. and Zolensky, M.E. and Hochleitner, R. and Kaliwoda, M. and Öngen, S. and Fausto, R. and Nogueira, B.A. and Chukin, A.V. and Karashanova, D. and Semionkin, V.A. and Yeşiltaş, M. and Glotch, T. and Yilmaz, A. and Friedrich, J.M. and Sanborn, M.E. and Huyskens, M. and Ziegler, K. and Williams, C.D. and Schönbächler, M. and Bauer, K. and Meier, M.M.M. and Maden, C. and Busemann, H. and Welten, K.C. and Caffee, M.W. and Laubenstein, M. and Zhou, Q. and Li, Q.-L. and Li, X.-H. and Liu, Y. and Tang, G.-Q. and Sears, D.W.G. and Mclain, H.L. and Dworkin, J.P. and Elsila, J.E. and Glavin, D.P. and Schmitt-Kopplin, P. and Ruf, A. and LE Corre, L. and Schmedemann, N. and (The Saricicek Meteorite Consortium)
dc.date.accessioned2021-04-08T12:06:53Z
dc.date.available2021-04-08T12:06:53Z
dc.date.issued2019
dc.identifier10.1111/maps.13258
dc.identifier.issn10869379
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85063957015&doi=10.1111%2fmaps.13258&partnerID=40&md5=6368385958b60077890b72518f721ff6
dc.identifier.urihttp://acikerisim.bingol.edu.tr/handle/20.500.12898/4134
dc.description.abstractThe Sariçiçek howardite meteorite shower consisting of 343 documented stones occurred on September 2, 2015 in Turkey and is the first documented howardite fall. Cosmogenic isotopes show that Sariçiçek experienced a complex cosmic-ray exposure history, exposed during ~12–14 Ma in a regolith near the surface of a parent asteroid, and that an ~1 m sized meteoroid was launched by an impact 22 ± 2 Ma ago to Earth (as did one-third of all HED meteorites). SIMS dating of zircon and baddeleyite yielded 4550.4 ± 2.5 Ma and 4553 ± 8.8 Ma crystallization ages for the basaltic magma clasts. The apatite U-Pb age of 4525 ± 17 Ma, K-Ar age of ~3.9 Ga, and the U,Th-He ages of 1.8 ± 0.7 and 2.6 ± 0.3 Ga are interpreted to represent thermal metamorphic and impact-related resetting ages, respectively. Petrographic; geochemical; and O-, Cr-, and Ti-isotopic studies confirm that Sariçiçek belongs to the normal clan of HED meteorites. Petrographic observations and analysis of organic material indicate a small portion of carbonaceous chondrite material in the Sariçiçek regolith and organic contamination of the meteorite after a few days on soil. Video observations of the fall show an atmospheric entry at 17.3 ± 0.8 km s −1 from NW; fragmentations at 37, 33, 31, and 27 km altitude; and provide a pre-atmospheric orbit that is the first dynamical link between the normal HED meteorite clan and the inner Main Belt. Spectral data indicate the similarity of Sariçiçek with the Vesta asteroid family (V-class) spectra, a group of asteroids stretching to delivery resonances, which includes (4) Vesta. Dynamical modeling of meteoroid delivery to Earth shows that the complete disruption of a ~1 km sized Vesta family asteroid or a ~10 km sized impact crater on Vesta is required to provide sufficient meteoroids ≤4 m in size to account for the influx of meteorites from this HED clan. The 16.7 km diameter Antionia impact crater on Vesta was formed on terrain of the same age as given by the 4 He retention age of Sariçiçek. Lunar scaling for crater production to crater counts of its ejecta blanket show it was formed ~22 Ma ago. © The Meteoritical Society, 2019.
dc.language.isoEnglish
dc.sourceMeteoritics and Planetary Science
dc.titleThe Sariçiçek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids


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