Pinpointing the source of a lunar meteorite:: Implications for the evolution of the moon

被引：140

作者：

Gnos, E

Hofmann, BA

Al-Kathiri, A

Lorenzetti, S

Eugster, O

Whitehouse, MJ

Villa, IM

Jull, AJT

Eikenberg, J

Spettel, B

Krähenbühl, U

Franchi, IA

Greenwood, RC

机构：

[1] Univ Bern, Inst Geol, CH-3012 Bern, Switzerland

[2] Nat Hist Museum Burgergemeinde Bern, CH-3005 Bern, Switzerland

[3] Univ Bern, Inst Phys, Abt Weltraumforsch & Planetol, CH-3012 Bern, Switzerland

[4] Swedish Museum Nat Hist, Lab Isotope Geol, SE-10405 Stockholm, Sweden

[5] Univ Arizona, Natl Sci Fdn, Arizona Accelerator Mass Spectrometry Lab, Tucson, AZ 85721 USA

[6] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[7] Max Planck Inst Chem, Abt Kosmochem, D-55020 Mainz, Germany

[8] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

[9] Open Univ, Planetary & Space Sci Res Inst, Milton Keynes MK7 6AA, Bucks, England

来源：

SCIENCE | 2004年 / 305卷 / 5684期

关键词：

D O I：

10.1126/science.1099397

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The lunar meteorite Sayh al Uhaymir 169 consists of an impact melt breccia extremely enriched with potassium, rare earth elements, and phosphorus [thorium, 32.7 parts per million (ppm); uranium, 8.6 ppm; potassium oxide, 0.54 weight percent], and adherent regolith. The isotope systematics of the meteorite record four lunar impact events at 3909 +/- 13 million years ago (Ma), similar to 2800 Ma, similar to 200 Ma, and < 0.34 Ma, and collision with Earth sometime after 9.7 ± 1.3 thousand years ago. With these data, we can link the impact-melt breccia to Imbrium and pinpoint the source region of the meteorite to the Lalande impact crater.

引用

页码：657 / 659

页数：3

共 23 条

[1]

[Anonymous], 1991, LUNAR SOURCE BOOK US

[2] RELATIVE AND ABSOLUTE AGES OF INDIVIDUAL CRATERS AND THE RATE OF INFALLS ON THE MOON IN THE POST-IMBRIUM PERIOD [J].