The Sariçiçek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids
Creators: name: Unsalan, Ozan
name: Jenniskens, Peter
name: Yin, Qing-Zhu
name: Kaygisiz, Ersin
name: Albers, Jim
name: Clark, David L.
name: Granvik, Mikael
name: Demirkol, Iskender
name: Erdogan, Ibrahim Y.
name: Bengu, Aydin S.
name: Özel, Mehmet E.
name: Terzioglu, Zahide
name: GI, Nayeob
name: Brown, Peter
name: Yalcinkaya, Esref
name: Temel, Tuğba
name: Prabhu, Dinesh K.
name: Robertson, Darrel K.
name: Boslough, Mark
name: Ostrowski, Daniel R.
name: Kimberley, Jamie
name: ER, Selman
name: Rowland, Douglas J.
name: Bryson, Kathryn L.
name: Altunayar-Unsalan, Cisem
name: Ranguelov, Bogdan
name: Karamanov, Alexander
name: Tatchev, Dragomir
name: Kocahan, Özlem
name: Oshtrakh, Michael I.
name: Maksimova, Alevtina A.
name: Karabanalov, Maxim S.
name: Verosub, Kenneth L.
name: Levin, Emily
name: Uysal, Ibrahim
name: Hoffmann, Viktor
name: Hiroi, Takahiro
name: Reddy, Vishnu
name: Ildiz, Gulce O.
name: Bolukbasi, Olcay
name: Zolensky, Michael E.
name: Hochleitner, Rupert
name: Kaliwoda, Melanie
name: Öngen, Sinan
name: Fausto, Rui
name: Nogueira, Bernardo A.
name: Chukin, Andrey V.
name: Karashanova, Daniela
name: Semionkin, Vladimir A.
name: Ş, Mehmet Ye Şilta
name: Glotch, Timothy
name: Yilmaz, Ayberk
name: Friedrich, Jon M.
name: Sanborn, Matthew E.
name: Huyskens, Magdalena
name: Ziegler, Karen
name: Williams, Curtis D.
name: Schönbächler, Maria
name: Bauer, Kerstin
name: Meier, Matthias M. M.
name: Maden, Colin
name: Busemann, Henner
name: Welten, Kees C.
name: Caffee, Marc W.
name: Laubenstein, Matthias
name: Zhou, Qin
name: Li, Qiu-Li
name: Li, Xian- Hua
name: Liu, Yu
name: Tang, Guo-Qiang
name: Sears, Derek W. G.
name: McLain, Hannah L.
name: Dworkin, Jason P.
name: Elsila, Jamie E.
name: Glavin, Daniel P.
name: Schmitt-Kopplin, Philippe
name: Ruf, Alexander
name: Corre, Lucille Le
name: Schmedemann, Nico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The Sariçiçek howardite meteorite shower consisting of 343 documented stones occurred on 2 September 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 ca.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 kms-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 spectra, a group of asteroids stretching to delivery resonances, which includes (4) Vesta. Dynamical modeling of meteoroid delivery to Earth shows that the disruption of a ca.1 km sized Vesta family asteroid or a ~10 km sized impact crater on Vesta is required to provide sufficient meteoroids &lt;4 m in size to account for the influx of meteorites from this HED clan.