Nanosized carbon-rich grains in carbonaceous chondrite meteorites

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)431-439
Number of pages9
JournalEarth and Planetary Science Letters
Volume224
Issue number3-4
DOIs
StatePublished - Aug 15 2004

Fingerprint

Meteorites
carbonaceous chondrites
carbonaceous chondrite
meteorites
meteorite
Carbon
carbon
carbonaceous materials
Nanospheres
Electron energy loss spectroscopy
Chemical analysis
Nanotubes
transmission electron microscopy
hollow
nanotubes
energy dissipation
spectroscopy
electron energy
Transmission electron microscopy
electron

Keywords

  • Carbonaceous chondrites
  • Carbonaceous material
  • EELS
  • Nanometer-scale variations
  • TEM

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Nanosized carbon-rich grains in carbonaceous chondrite meteorites. / Garvie, Laurence; Buseck, P R.

In: Earth and Planetary Science Letters, Vol. 224, No. 3-4, 15.08.2004, p. 431-439.

Research output: Contribution to journalArticle

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