GSTDTAP  > 地球科学
DOI10.1038/s41561-019-0377-8
Mesosiderite formation on asteroid 4 Vesta by a hit-and-run collision
Haba, Makiko K.1,2; Wotzlaw, Jorn-Frederik1; Lai, Yi-Jen1,4; Yamaguchi, Akira3; Schonbachler, Maria1
2019-07-01
发表期刊NATURE GEOSCIENCE
ISSN1752-0894
EISSN1752-0908
出版年2019
卷号12期号:7页码:510-+
文章类型Article
语种英语
国家Switzerland; Japan; Australia
英文摘要

Collision and disruption processes of protoplanetary bodies in the early Solar System are key to understanding the genesis of diverse types of main-belt asteroids. Mesosiderites are stony-iron meteorites that formed by the mixing of howardite-eucrite-diogenite-like crust and molten core materials and provide unique insights into the catastrophic break-up of differentiated asteroids. However, the enigmatic formation process and the poorly constrained timing of metal-silicate mixing complicate the assignment to potential parent bodies. Here we report the high-precision uranium-lead dating of mesosiderite zircons by isotope dilution thermal ionization mass spectrometry to reveal an initial crust formation 4,558.5 +/- 2.1 million years ago and metal-silicate mixing at 4,525.39 +/- 0.85 million years ago. The two distinct ages coincide with the timing of the crust formation and a large-scale reheating event on the eucrite parent body, probably the asteroid Vesta. This chronological coincidence corroborates that Vesta is the parent body of mesosiderite silicates. Mesosiderite formation on Vesta can be explained by a hit-and-run collision 4,525.4 million years ago that caused the thick crust observed by NASA's Dawn mission and explains the missing olivine in mesosiderites, howardite-eucrite-diogenite meteorites and vestoids.


领域地球科学 ; 气候变化
收录类别SCI-E
WOS记录号WOS:000473104300006
WOS关键词U-PB AGE ; THERMAL HISTORY ; BASALTIC EUCRITES ; PARENT BODY ; ZIRCONS ; SCALE ; GEOCHRONOLOGY ; CHRONOLOGY ; OLIVINE ; ORIGIN
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/184801
专题地球科学
气候变化
作者单位1.Swiss Fed Inst Technol, Inst Geochem & Petrol, Zurich, Switzerland;
2.Tokyo Inst Technol, Dept Earth & Planetary Sci, Tokyo, Japan;
3.Natl Inst Polar Res, Tokyo, Japan;
4.Macquarie Univ, Dept Earth & Planetary Sci, Macquarie GeoAnalyt, Sydney, NSW, Australia
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GB/T 7714
Haba, Makiko K.,Wotzlaw, Jorn-Frederik,Lai, Yi-Jen,et al. Mesosiderite formation on asteroid 4 Vesta by a hit-and-run collision[J]. NATURE GEOSCIENCE,2019,12(7):510-+.
APA Haba, Makiko K.,Wotzlaw, Jorn-Frederik,Lai, Yi-Jen,Yamaguchi, Akira,&Schonbachler, Maria.(2019).Mesosiderite formation on asteroid 4 Vesta by a hit-and-run collision.NATURE GEOSCIENCE,12(7),510-+.
MLA Haba, Makiko K.,et al."Mesosiderite formation on asteroid 4 Vesta by a hit-and-run collision".NATURE GEOSCIENCE 12.7(2019):510-+.
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