The Sari\c{c}i\c{c}ek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids
The Sari\c{c}i\c{c}ek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids
The Sari\c{c}i\c{c}ek 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 Sari\c{c}i\c{c}ek 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 Sari\c{c}i\c{c}ek 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 Sari\c{c}i\c{c}ek 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 Sari\c{c}i\c{c}ek 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 <4 m in size to account for the influx of meteorites from this HED clan.
Ayberk Yilmaz、Jason P. Dworkin、Ibrahim Y. Erdogan、Kenneth L. Verosub、Mikael Granvik、Bernardo A. Nogueira、Darrel K. Robertson、Vishnu Reddy、Ersin Kaygisiz、Nayeob GI、Ozan Unsalan、Timothy Glotch、?zlem Kocahan、Dragomir Tatchev、Douglas J. Rowland、Jim Albers、Viktor Hoffmann、Alexander Ruf、David L. Clark、Cisem Altunayar-Unsalan、Qing-Zhu Yin、Mehmet E. ?zel、Matthias M. M. Meier、Lucille Le Corre、Marc W. Caffee、Henner Busemann、Daniela Karashanova、Ibrahim Uysal、Magdalena Huyskens、Jamie E. Elsila、Kerstin Bauer、Vladimir A. Semionkin、Jamie Kimberley、Maria Sch?nb?chler、Jon M. Friedrich、Maxim S. Karabanalov、Yu Liu、Guo-Qiang Tang、Sinan ?ngen、Alexander Karamanov、Derek W. G. Sears、Emily Levin、Kees C. Welten、Melanie Kaliwoda、Aydin S. Bengu、Matthias Laubenstein、Michael E. Zolensky、Peter Jenniskens、Peter Brown、Zahide Terzioglu、Rui Fausto、Gulce O. Ildiz、Michael I. Oshtrakh、Hannah L. McLain、Matthew E. Sanborn、Tu?ba Temel、Colin Maden、Kathryn L. Bryson、Alevtina A. Maksimova、Iskender Demirkol、Andrey V. Chukin、Esref Yalcinkaya、Curtis D. Williams、Selman ER、Karen Ziegler、Qiu-Li Li、Xian- Hua Li、Dinesh K. Prabhu、Bogdan Ranguelov、Qin Zhou、Mehmet Ye ?ilta ?、Daniel P. Glavin、Rupert Hochleitner、Mark Boslough、Philippe Schmitt-Kopplin、Nico Schmedemann、Takahiro Hiroi、Daniel R. Ostrowski、Olcay Bolukbasi
天文学地质学
Ayberk Yilmaz,Jason P. Dworkin,Ibrahim Y. Erdogan,Kenneth L. Verosub,Mikael Granvik,Bernardo A. Nogueira,Darrel K. Robertson,Vishnu Reddy,Ersin Kaygisiz,Nayeob GI,Ozan Unsalan,Timothy Glotch,?zlem Kocahan,Dragomir Tatchev,Douglas J. Rowland,Jim Albers,Viktor Hoffmann,Alexander Ruf,David L. Clark,Cisem Altunayar-Unsalan,Qing-Zhu Yin,Mehmet E. ?zel,Matthias M. M. Meier,Lucille Le Corre,Marc W. Caffee,Henner Busemann,Daniela Karashanova,Ibrahim Uysal,Magdalena Huyskens,Jamie E. Elsila,Kerstin Bauer,Vladimir A. Semionkin,Jamie Kimberley,Maria Sch?nb?chler,Jon M. Friedrich,Maxim S. Karabanalov,Yu Liu,Guo-Qiang Tang,Sinan ?ngen,Alexander Karamanov,Derek W. G. Sears,Emily Levin,Kees C. Welten,Melanie Kaliwoda,Aydin S. Bengu,Matthias Laubenstein,Michael E. Zolensky,Peter Jenniskens,Peter Brown,Zahide Terzioglu,Rui Fausto,Gulce O. Ildiz,Michael I. Oshtrakh,Hannah L. McLain,Matthew E. Sanborn,Tu?ba Temel,Colin Maden,Kathryn L. Bryson,Alevtina A. Maksimova,Iskender Demirkol,Andrey V. Chukin,Esref Yalcinkaya,Curtis D. Williams,Selman ER,Karen Ziegler,Qiu-Li Li,Xian- Hua Li,Dinesh K. Prabhu,Bogdan Ranguelov,Qin Zhou,Mehmet Ye ?ilta ?,Daniel P. Glavin,Rupert Hochleitner,Mark Boslough,Philippe Schmitt-Kopplin,Nico Schmedemann,Takahiro Hiroi,Daniel R. Ostrowski,Olcay Bolukbasi.The Sari\c{c}i\c{c}ek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids[EB/OL].(2021-02-07)[2025-08-18].https://arxiv.org/abs/2102.03733.点此复制
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