TY - JOUR
T1 - The Sariçiçek howardite fall in Turkey
T2 - Source crater of HED meteorites on Vesta and impact risk of Vestoids
AU - (The Sariçiçek Meteorite Consortium)
AU - Unsalan, Ozan
AU - Jenniskens, Peter
AU - Yin, Qing Zhu
AU - Kaygisiz, Ersin
AU - Albers, Jim
AU - Clark, David L.
AU - Granvik, Mikael
AU - Demirkol, Iskender
AU - Erdogan, Ibrahim Y.
AU - Bengu, Aydin S.
AU - Özel, Mehmet E.
AU - Terzioglu, Zahide
AU - Gi, Nayeob
AU - Brown, Peter
AU - Yalcinkaya, Esref
AU - Temel, Tuğba
AU - Prabhu, Dinesh K.
AU - Robertson, Darrel K.
AU - Boslough, Mark
AU - Ostrowski, Daniel R.
AU - Kimberley, Jamie
AU - Er, Selman
AU - Rowland, Douglas J.
AU - Bryson, Kathryn L.
AU - Altunayar-Unsalan, Cisem
AU - Ranguelov, Bogdan
AU - Karamanov, Alexander
AU - Tatchev, Dragomir
AU - Kocahan, Özlem
AU - Oshtrakh, Michael I.
AU - Maksimova, Alevtina A.
AU - Karabanalov, Maxim S.
AU - Verosub, Kenneth L.
AU - Levin, Emily
AU - Uysal, Ibrahim
AU - Hoffmann, Viktor
AU - Hiroi, Takahiro
AU - Reddy, Vishnu
AU - Ildiz, Gulce O.
AU - Bolukbasi, Olcay
AU - Zolensky, Michael E.
AU - Hochleitner, Rupert
AU - Kaliwoda, Melanie
AU - Öngen, Sinan
AU - Fausto, Rui
AU - Nogueira, Bernardo A.
AU - Chukin, Andrey V.
AU - Karashanova, Daniela
AU - Semionkin, Vladimir A.
AU - Glotch, Timothy
N1 - Publisher Copyright: © The Meteoritical Society, 2019.
PY - 2019/5
Y1 - 2019/5
N2 - The 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.
AB - The 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.
UR - https://www.scopus.com/pages/publications/85063957015
U2 - 10.1111/maps.13258
DO - 10.1111/maps.13258
M3 - Article
SN - 1086-9379
VL - 54
SP - 953
EP - 1008
JO - Meteoritics and Planetary Science
JF - Meteoritics and Planetary Science
IS - 5
ER -