The fall, recovery, orbit, and composition of the Tagish Lake meteorite: A new type of carbonaceous chondrite

被引：275

作者：

Brown, PG ^{[1
]}

Hildebrand, AR

Zolensky, ME

Grady, M

Clayton, RN

Mayeda, TK

Tagliaferri, E

Spalding, R

MacRae, ND

Hoffman, EL

Mittlefehldt, DW

Wacker, JF

Bird, JA

Campbell, MD

Carpenter, R

Gingerich, H

Glatiotis, M

Greiner, E

Mazur, MJ

McCausland, PJA

Plotkin, H

Mazur, TR

机构：

[1] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada

[2] Univ Western Ontario, Dept Philosophy, London, ON N6A 3K7, Canada

[3] Univ Calgary, Dept Geol & Geophys, Calgary, AB T2N 1N4, Canada

[4] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA

[5] Nat Hist Museum, Dept Mineral, London SW7 5BD, England

[6] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[7] Univ Chicago, Dept Chem, Chicago, IL 60637 USA

[8] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA

[9] ET Space Syst, Camarillo, CA 93012 USA

[10] Sandia Natl Labs, Org 5909, Albuquerque, NM 87185 USA

[11] Univ Western Ontario, Dept Earth Sci, London, ON N6A 5B7, Canada

[12] Activat Labs Ltd, Ancaster, ON L9G 4V5, Canada

[13] Lockheed Martin SO, Houston, TX 77058 USA

[14] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

SCIENCE | 2000年 / 290卷 / 5490期

关键词：

D O I：

10.1126/science.290.5490.320

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 preatmospheric mass of the Tagish Lake meteoroid was about 200,000 kilograms. Its calculated orbit indicates affinity to the Apollo asteroids with a semimajor axis in the middle of the asteroid belt, consistent with a linkage to low-albedo C, D, and P type asteroids. The mineralogy, oxygen isotope, and bulk chemical composition of recovered samples of the Tagish Lake meteorite are intermediate between CM and Cl meteorites. These data suggest that the Tagish Lake meteorite may be one of the most primitive solar system materials yet studied.

引用

页码：320 / 325

页数：6

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