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Fall, Recovery, and Characterization of the Novato L6 Chondrite Breccia

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Fall, Recovery, and Characterization of the Novato L6 Chondrite Breccia METEORITICS & PLANETARY SCIENCE EDITOR: A. J. Timothy Jull ASSOCIATE EDITORS Natalia Artemieva Nancy Chabot Walter Huebner Carlé Pieters Scott Sandford Articles Gretchen Benedix Christine Floss Christian Koeberl Michael Poelchau Edward Scott T. BRACHANIEC, K. SZOPA, and Ł. KARWOWSKI : Discovery of the most distal Ries tektites found in Lower Silesia, southwestern Poland . 1315 • Adrian Brearley Ian Franchi Randy Korotev Dina Prialnik Gopalan Srinivasan Donald Brownlee Michael Gaffey Ingo Leya Uwe Reimold Akira Yamaguchi E. DOBRICA˘ and A. J. BREARLEY : Widespread hydrothermal alteration minerals in the fi ne-grained matrices of the Tieschitz unequilibrated ordinary chondrite . 1323 Marc Caffee Cyrena Goodrich Ian Lyon Alexander Ruzicka Michael Zolensky Gordon Osinski A. KERESZTURI, Z. BLUMBERGER, S. JÓZSA, Z. MAY, A. MÜLLER, M. SZABÓ, and M. TÓTH : Alteration processes in the CV chondrite parent body based on analysis of NWA 2086 meteorite . 1350 U. OTT, S. MERCHEL, S. HERRMANN, S. PAVETICH, G. RUGEL, T. FAESTERMANN, L. FIMIANI, J. M. GOMEZ-GUZMAN, K. HAIN, G. KORSCHINEK, P. LUDWIG, M. D’ORAZIO, and L. FOLCO : Cosmic ray exposure and pre-atmospheric size of the Gebel Kamil iron meteorite . 1365 M Volume 49 Number 8 2014 August Y. W. LI, S. BUGIEL, M. TRIELOFF, J. K. HILLIER, F. POSTBERG, M. C. PRICE, A. SHU, K. FIEGE, L. A. FIELDING, S. P. ARMES, ETEORITICS Y. Y. WU, E. GRÜN, and R. SRAMA : Morphology of craters generated by hypervelocity impacts of micron-sized polypyrrole-coated olivine particles . 1375 P. JENNISKENS, A. E. RUBIN, Q.-Z. YIN, D. W. G. SEARS, S. A. SANDFORD, M. E. ZOLENSKY, A. N. KROT, L. BLAIR, D. KANE, J. UTAS, R. VERISH, J. M. FRIEDRICH, J. WIMPENNY, G. R. EPPICH, K. ZIEGLER, K. L. VEROSUB, D. J. ROWLAND, J. ALBERS, P. S. GURAL, B. GRIGSBY, M. D. FRIES, R. MATSON, M. JOHNSTON, E. SILBER, P. BROWN, A. YAMAKAWA, P & M. E. SANBORN, M. LAUBENSTEIN, K. C. WELTEN, K. NISHIIZUMI, M. M. M. MEIER, H. BUSEMANN, P. CLAY, LANETARY M. W. CAFFEE, P. SCHMITT-KOPPLIN, N. HERTKORN, D. P. GLAVIN, M. P. CALLAHAN, J. P. DWORKIN, Q. WU, R. N. ZARE, M. GRADY, S. VERCHOVSKY, V. EMEL’YANENKO, S. NAROENKOV, D. L. CLARK, B. GIRTEN, and P. S. WORDEN (The Novato Meteorite Consortium) : Fall, recovery, and characterization of the Novato L6 chondrite breccia . 1388 Q.-Z. YIN, Q. ZHOU, Q.-L. LI, X.-H. LI, Y. LIU, G.-Q. TANG, A. N. KROT, and P. JENNISKENS : Records of the Moon-forming impact and the 470 Ma disruption of the L chondrite parent body in the asteroid belt from U-Pb apatite ages of Novato (L6) . 1426 S CIENCE M. E. ENNIS and H. Y. MCSWEEN JR. : Crystallization kinetics of olivine-phyric shergottites . 1440 J. DAVIDSON, A. N. KROT, K. NAGASHIMA, E. HELLEBRAND, and D. S. LAURETTA : Oxygen isotope and chemical compositions of magnetite and olivine in the anomalous CK3 Watson 002 and ungrouped Asuka-881595 carbonaceous chondrites: 2014 August 1315–1508, pp. 8, No. 49, Vol. Effects of parent body metamorphism . 1456 J. M. TRIGO-RODRÍGUEZ, J. LLORCA, M. WEYRAUCH, A. BISCHOFF, C. E. MOYANO-CAMBERO, K. KEIL, M. LAUBENSTEIN, A. PACK, J. M. MADIEDO, J. ALONSO-AZCÁRATE, M. RIEBE, R. WIELER, U. OTT, M. TAPIA, and N. MESTRES : The Ardón L6 ordinary chondrite: A long-hidden Spanish meteorite fall . 1475 Reports A. M. GISMELSEED, Y. A. ABDU, M. H. SHADDAD, H. C. VERMA, and P. JENNISKENS : Fe-bearing phases in a ureilite fragment from the asteroid 2008 TC3 (= Almahata Sitta meteorites): A combined Mössbauer spectroscopy and X-ray diffraction study . 1485 B. A. NORONHA and J. M. FRIEDRICH : Chemical compositions and classifi cation of fi ve thermally altered carbonaceous chondrites . 1494 Book Review D. APAI : Earth: Evolution of a habitable world . 1505 Announcement A. RUZICKA, J. N. GROSSMAN, and L. GARVIE : The Meteoritical Bulletin, No. 100, 2014 June . 1507 End of fl ight fragmentation of the November 18, 2012, fi reball over the San Francisco Bay Area in California. ISSN 1086-9379 Asteroids • Comets • Craters • Interplanetary Dust • Interstellar Medium • Lunar Samples • Meteors • Meteorites • Natural Satellites • Planets • Tektites Origin and History of the Solar System mmaps_v49_i8_oc.inddaps_v49_i8_oc.indd 1 116-08-20146-08-2014 009:39:199:39:19 Meteoritics & Planetary Science 49, Nr 8, 1388–1425 (2014) doi: 10.1111/maps.12323 Fall, recovery, and characterization of the Novato L6 chondrite breccia Peter JENNISKENS1,2*, Alan E. RUBIN3, Qing-Zhu YIN4, Derek W. G. SEARS2,5, Scott A. SANDFORD2, Michael E. ZOLENSKY6, Alexander N. KROT7, Leigh BLAIR1, Darci KANE8, Jason UTAS9, Robert VERISH10, Jon M. FRIEDRICH11,12, Josh WIMPENNY4, Gary R. EPPICH13, Karen ZIEGLER14, Kenneth L. VEROSUB4, Douglas J. ROWLAND15, Jim ALBERS1, Peter S. GURAL1, Bryant GRIGSBY1, Marc D. FRIES6, Robert MATSON16, Malcolm JOHNSTON17, Elizabeth SILBER18, Peter BROWN18, Akane YAMAKAWA4, Matthew E. SANBORN4, Matthias LAUBENSTEIN19, Kees C. WELTEN20, Kunihiko NISHIIZUMI20, Matthias M. M. MEIER21,22, Henner BUSEMANN23, Patricia CLAY23, Marc W. CAFFEE24, Phillipe SCHMITT-KOPPLIN25,26, Norbert HERTKORN25, Daniel P. GLAVIN27, Michael P. CALLAHAN27, Jason P. DWORKIN27, Qinghao WU28, Richard N. ZARE28, Monica GRADY29, Sasha VERCHOVSKY29, Vacheslav EMEL’YANENKO30, Sergey NAROENKOV30, David L. CLARK18, Beverly GIRTEN2, and Peter S. WORDEN2 (The Novato Meteorite Consortium) 1SETI Institute, Carl Sagan Center, Mountain View, California 94043, USA 2NASA Ames Research Center, Moffett Field, California 94035, USA 3Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, California 90095–1567, USA 4Department of Earth and Planetary Sciences, University of California at Davis, Davis, California 95616–8605, USA 5BAER Institute, Mountain View, California 94043, USA 6Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, Texas 77801, USA 7Hawai‘i Institute of Geophysics and Planetology, University of Hawai‘i at Manoa, Honolulu, Hawai‘i 96822, USA 8Buck Institute, Novato, California 94945, USA 9Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, California 90095–1567, USA 10Meteorite Recovery Laboratory, P.O. Box 463084, Escondido, California 92046, USA 11Department of Chemistry, Fordham University, Bronx, New York 10458, USA 12Department of Earth and Planetary Sciences, American Museum of Natural History, New York, New York 10024, USA 13Lawrence Livermore National Laboratory, Glenn Seaborg Institute, Livermore, California 94550, USA 14Institute of Meteoritics, University of New Mexico, Albuquerque, New Mexico 87131–0001, USA 15Center for Molecular and Genomic Imaging, University of California at Davis, Davis, California 95616, USA 16S.A.I.C., San Diego, California 92121, USA 17US Geological Survey, Menlo Park, California 94025, USA 18Department of Physics & Astronomy, University of Western Ontario, London, Ontario N6A 3K7, Canada 19Lab. Naz. del Gran Sasso, Inst. Naz. di Fiscia Nucleare, I-67010 Assergi (AQ), Italy 20Space Sciences Laboratory, University of California, Berkeley, California 94720, USA 21Department of Earth Sciences, ETH Zurich,€ CH-8092 Zurich,€ Switzerland 22Department of Geology, Lund University, SE-22362 Lund, Sweden 23School of Earth, Atmospheric and Environmental Sciences (SEAES), University of Manchester, Manchester M13 9PL, UK 24Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA 25B.G.C., Helmholtz Zentrum Munchen,€ D-85764 Munchen,€ Germany 26A.L.C., Technische Universit€at Munchen-TUM,€ D-85354 Freising, Germany 27Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA 28Department of Chemistry, Stanford University, Stanford, California 94305–5080, USA 29Planetary and Space Science Research Institute, Open University, Milton Keynes MK7 6AA, UK 30Institute of Astronomy of the Russian Academy of Sciences (INASAN), Moscow 119017, Russia *Corresponding author. E-mail: [email protected] (Received 30 December 2013; revision accepted 07 May 2014) © The Meteoritical Society, 2014. 1388 The Novato L6 chondrite breccia 1389 Abstract–The Novato L6 chondrite fragmental breccia fell in California on 17 October 2012, and was recovered after the Cameras for Allsky Meteor Surveillance (CAMS) project determined the meteor’s trajectory between 95 and 46 km altitude. The final fragmentation from 42 to 22 km altitude was exceptionally well documented by digital photographs. The first sample was recovered before rain hit the area. First results from a consortium study of the meteorite’s characterization, cosmogenic and radiogenic nuclides, origin, and conditions of the fall are presented. Some meteorites did not retain fusion crust and show evidence of spallation. Before entry, the meteoroid was 35 5 cm in diameter (mass 80 35 kg) with a cosmic-ray exposure age of 9 1 Ma, if it hadÆ a one-stage exposure history.Æ A two-stage exposure history is moreÆ likely, with lower shielding in the last few Ma. Thermoluminescence data suggest a collision event within the last 0.1 Ma. Novato probably belonged to the class of shocked L chondrites that have a common shock age of 470 Ma, based on the U,Th-He age of 420 220 Ma. The measured orbits of Novato, Jesenice, and Innisfree are consistent with a proposedÆ origin of these shocked L chondrites in the Gefion asteroid family, perhaps directly via the 5:2 mean-motion resonance with Jupiter. Novato experienced a stronger compaction than did other L6 chondrites of shock- stage S4. Despite this, a freshly broken surface shows a wide range of organic compounds. INTRODUCTION called Novato N01), which reacted strongly to a
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