The Creston, California, meteorite fall and the origin of L chondrites
文献类型：期刊论文
| 作者 | Jenniskens, Peter1,2; Utas, Jason3; Yin, Qing-Zhu4; Matson, Robert D.5; Fries, Marc6; Howell, J. Andreas7; Free, Dwayne7; Albers, Jim1; Devillepoix, Hadrien8; Bland, Phil8 |
| 刊名 | METEORITICS & PLANETARY SCIENCE
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 54期号:4页码:699-720 |
| ISSN号 | 1086-9379 |
| DOI | 10.1111/maps.13235 |
| 英文摘要 | It has been proposed that all L chondrites resulted from an ongoing collisional cascade of fragments that originated from the formation of the similar to 500 Ma old asteroid family Gefion, located near the 5:2 mean-motion resonance with Jupiter in the middle Main Belt. If so, L chondrite pre-atmospheric orbits should be distributed as expected for that source region. Here, we present contradictory results from the orbit and collisional history of the October 24, 2015, L6 ordinary chondrite fall at Creston, CA (here reclassified to L5/6). Creston's short 1.30 +/- 0.02 AU semimajor axis orbit would imply a long dynamical evolution if it originated from the middle Main Belt. Indeed, Creston has a high cosmic ray exposure age of 40-50 Ma. However, Creston's small meteoroid size and low 4.23 +/- 0.07 degrees inclination indicate a short dynamical lifetime against collisions. This suggests, instead, that Creston originated most likely in the inner asteroid belt and was delivered via the nu(6) resonance. The U-Pb systematics of Creston apatite reveals a Pb-Pb age of 4,497.1 +/- 3.7 Ma, and an upper intercept U-Pb age of 4,496.7 +/- 5.8 Ma (2 sigma), circa 70 Ma after formation of CAI, as found for other L chondrites. The K-Ar (age similar to 4.3 Ga) and U,Th-He (age similar to 1 Ga) chronometers were not reset at similar to 500 Ma, while the lower intercept U-Pb age is poorly defined as 770 +/- 320 Ma. So far, the three known L chondrites that impacted on orbits with semimajor axes a AU all have high (>3 Ga) K-Ar ages. This argues for a source of some of our L chondrites in the inner Main Belt. Not all L chondrites originate in a continuous population of Gefion family debris stretching across the 3:1 mean-motion resonance. |
| WOS关键词 | MOON-FORMING IMPACT ; RAY EXPOSURE AGES ; ASTEROIDAL SOURCE ; MA DISRUPTION ; NOBLE-GASES ; PARENT BODY ; PB AGE ; RECOVERY ; HISTORY ; SOLAR |
| 资助项目 | NASA Ames Asteroid Threat Assessment Program ; NASA[NNX14-AR92G] ; NASA[NNX14-AM62G] ; NASA[NNX16-AD34G] ; NSFC[41403055] ; Swiss National Science Foundation ; Academy of Finland[299543] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000462911900002 |
| 资助机构 | NASA Ames Asteroid Threat Assessment Program ; NASA Ames Asteroid Threat Assessment Program ; NASA ; NASA ; NSFC ; NSFC ; Swiss National Science Foundation ; Swiss National Science Foundation ; Academy of Finland ; Academy of Finland ; NASA Ames Asteroid Threat Assessment Program ; NASA Ames Asteroid Threat Assessment Program ; NASA ; NASA ; NSFC ; NSFC ; Swiss National Science Foundation ; Swiss National Science Foundation ; Academy of Finland ; Academy of Finland ; NASA Ames Asteroid Threat Assessment Program ; NASA Ames Asteroid Threat Assessment Program ; NASA ; NASA ; NSFC ; NSFC ; Swiss National Science Foundation ; Swiss National Science Foundation ; Academy of Finland ; Academy of Finland ; NASA Ames Asteroid Threat Assessment Program ; NASA Ames Asteroid Threat Assessment Program ; NASA ; NASA ; NSFC ; NSFC ; Swiss National Science Foundation ; Swiss National Science Foundation ; Academy of Finland ; Academy of Finland |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/91069]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Jenniskens, Peter |
| 作者单位 | 1.Carl Sagan Ctr, SETI Inst, Mountain View, CA 94043 USA 2.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA 3.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA 4.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA 5.Leidos, Seal Beach, CA 90740 USA 6.NASA, Astromat Res & Explorat Sci, Johnson Space Ctr, Houston, TX 77058 USA 7.SkySentinel LLC SSL, Spalding Allsky Camera Network, Melbourne, FL 32940 USA 8.Curtin Univ, Fac Sci & Engn, Perth, WA 6102, Australia 9.Ancient Earth Trading Co, Atascadero, CA 93423 USA 10.Meteorite Recovery Lab, Escondido, CA 92046 USA |
| 推荐引用方式 GB/T 7714 | Jenniskens, Peter,Utas, Jason,Yin, Qing-Zhu,et al. The Creston, California, meteorite fall and the origin of L chondrites[J]. METEORITICS & PLANETARY SCIENCE,2019,54(4):699-720. |
| APA | Jenniskens, Peter.,Utas, Jason.,Yin, Qing-Zhu.,Matson, Robert D..,Fries, Marc.,...&Granvik, Mikael.(2019).The Creston, California, meteorite fall and the origin of L chondrites.METEORITICS & PLANETARY SCIENCE,54(4),699-720. |
| MLA | Jenniskens, Peter,et al."The Creston, California, meteorite fall and the origin of L chondrites".METEORITICS & PLANETARY SCIENCE 54.4(2019):699-720. |
入库方式： OAI收割
来源：地质与地球物理研究所
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