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Jenniskens, P.* ; Rubin, A.E.* ; Yin, Q.Z.* ; Sears, D.W.G* ; Sandford, S.A.* ; Zolensky, M.E.* ; Krot, A.N.* ; Blair, L.* ; Kane, D.* ; Utas, J.* ; Verish, R.* ; Friedrich, J.M.* ; Wimpenny, J.* ; Eppich, G.R.* ; Ziegler, K.* ; Verosub, K.L.* ; Rowland, D.J.* ; Albers, J.* ; Gural, P.S.* ; Grigsby, B.* ; Fries, M.D.* ; Matson, R.* ; Johnston, M.* ; Silber, S.* ; Brown, P.* ; Yamakawa, A.* ; Sanborn, M.E.* ; Laubenstein, M.* ; Welten, K.C.* ; Nishiizumi, K.* ; Meier, M.M.M* ; Busemann, H.* ; Clay, P.* ; Caffee, M.W.* ; Schmitt-Kopplin, P. ; Hertkorn, N. ; Glavin, D.P.* ; Callahan, M.P.* ; Dworkin, J.P.* ; Wu, Q.* ; Zare, R.N.* ; Grady, M.* ; Verchovsky, S.* ; Emel'yanenko, V.* ; Naroenkov, S.* ; Clark, D.L.* ; Girten, B.* ; Worden, P.S.* ; Novato Meteorite Consortium (*)

Fall, recovery, and characterization of the Novato L6 chondrite breccia.

Meteorit. Planet. Sci. 49, 1388-1425 (2014)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
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 had a one-stage exposure history. A two-stage exposure history is more likely, with lower shielding in the last few Ma. Thermoluminescence data suggest a collision event within the last similar to 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 proposed 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.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Unequilibrated Ordinary Chondrites; Park-forest Meteorite; Inner Solar-system; Cosmogenic Nuclides; Exposure History; Oxygen-isotope; Carbonaceous Chondrites; Innisfree Meteorite; Asteroidal Source; Stony Meteorites
Sprache englisch
Veröffentlichungsjahr 2014
HGF-Berichtsjahr 2014
ISSN (print) / ISBN 1086-9379
e-ISSN 1945-5100
Zeitschrift Meteoritics & Planetary Science
Quellenangaben Band: 49, Heft: 8, Seiten: 1388-1425 Artikelnummer: , Supplement: ,
Verlag University of Arizona, Department of Geosciences
Verlagsort Hoboken
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit BioGeoChemistry and Analytics (BGC)
POF Topic(s) 30202 - Environmental Health
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-504800-001
DOI 10.1111/maps.12323
WOS ID WOS:000340875900007
Scopus ID 84906224020
Erfassungsdatum 2014-09-22
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