Nanosized carbon-rich grains in carbonaceous chondrite meteorites

被引：90

作者：

Garvie, LAJ ^{[1
]}

Buseck, PR

机构：

[1] Arizona State Univ, Dept Geol Sci, Tempe, AZ 85287 USA

[2] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 2004年 / 224卷 / 3-4期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

carbonaceous chondrites; nanometer-scale variations; carbonaceous material; TEM; EELS;

D O I：

10.1016/j.epsl.2004.05.024

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Macromolecular carbonaceous material is common in primitive meteorites. Little information exists on its form and composition, and there are no published data on nanometer-scale chemical and structural variations. Transmission electron microscopy (TEM) studies of CM meteorites reveal abundant, previously unrecognized nanosized carbonaceous grains. They have a high aromatic component as revealed by electron energy-loss spectroscopy (EELS), with up to 20 at.% substituted by S, N, and O. They occur as discrete hollow and solid nanospheres and sparse nanotubes. The grains exhibit considerable variations in composition, size, morphology, and abundance among meteorites and may represent materials from multiple reservoirs. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：431 / 439

页数：9

共 44 条

[1] The origin of chondritic macromolecular organic matter: A carbon and nitrogen isotope study [J].

Alexander, CMO ;

Russell, SS ;

Arden, JW ;

Ash, RD ;

Grady, MM ;

Pillinger, CT .

METEORITICS & PLANETARY SCIENCE, 1998, 33 (04) :603-622

[2] Structure of inorganic and carbonaceous particles emitted from heavy oil combustion [J].

Allouis, C ;

Beretta, F ;

D'Alessio, A .

CHEMOSPHERE, 2003, 51 (10) :1091-1096

[3]

Brearley A.J., 1998, PLANETARY MAT, V3, P1

[4]

BREARLEY AJ, 2002, LUN PLANT SCI C, pR33

[5]

BREARLEY AJ, 2001, LUN PLAN SCI C

[6] MATRICES OF CARBONACEOUS CHONDRITE METEORITES [J].

BUSECK, PR ;

HUA, X .

ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, 1993, 21 :255-305

[7] Primordial noble gases in "phase Q" in carbonaceous and ordinary chondrites studied by closed-system stepped etching [J].

Busemann, H ;

Baur, H ;

Wieler, R .

METEORITICS & PLANETARY SCIENCE, 2000, 35 (05) :949-973

[8] Recent discoveries in carbon black formation and morphology and their implications on the structure of interstellar carbon dust [J].

Cataldo, F ;

Pontier-Johnson, MA .

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES, 2002, 10 (01) :1-14

[9] Solid-state (1H and 13C) nuclear magnetic resonance spectroscopy of insoluble organic residue in the Murchison meteorite:: A self-consistent quantitative analysis [J].

Cody, GD ;

Alexander, CMO ;

Tera, F .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2002, 66 (10) :1851-1865

[10] The 3.3 micron and extended red emissions in interstellar clouds: Further evidence for carbon nanoparticles [J].

Duley, WW .

ASTROPHYSICAL JOURNAL, 2001, 553 (02) :575-580

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