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Survival of reactive carbon through meteorite impact melting

Parnell, John and Lindgren, Paula LU (2006) In Geology 34(12). p.1029-1032
Abstract

Melt fragments in melt breccias from the Gardnos impact crater, Norway, contain abundant carbon. A high proportion of the carbon present in the original melt was preserved. The stripping of hydrogen from carbon during melting prevents later hydrocarbon formation, hence the carbon is fixed in place rather than volatilized. Underlying lithic breccias that were not melted record hydrocarbon generation as a response to less extreme heating. Despite the high-temperature history of the melt, the carbon from the Gardnos impact crater is highly disordered, rather than ordered crystalline graphite, and in this respect, it is comparable with carbon in chondrite chondrules. Disordered carbon bears functional groups upon weathering, and, therefore,... (More)

Melt fragments in melt breccias from the Gardnos impact crater, Norway, contain abundant carbon. A high proportion of the carbon present in the original melt was preserved. The stripping of hydrogen from carbon during melting prevents later hydrocarbon formation, hence the carbon is fixed in place rather than volatilized. Underlying lithic breccias that were not melted record hydrocarbon generation as a response to less extreme heating. Despite the high-temperature history of the melt, the carbon from the Gardnos impact crater is highly disordered, rather than ordered crystalline graphite, and in this respect, it is comparable with carbon in chondrite chondrules. Disordered carbon bears functional groups upon weathering, and, therefore, carbon preserved through impact or other melting may be available for reworking into biologically relevant organic molecules.

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organization
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type
Contribution to journal
publication status
published
subject
keywords
Carbonaceous, Chondrites, Gardnos crater, Impact crater, Meteorite, Prebiotic chemistry
in
Geology
volume
34
issue
12
pages
4 pages
publisher
Geological Society of America
external identifiers
  • scopus:33845587161
ISSN
0091-7613
DOI
10.1130/G22731A.1
language
English
LU publication?
yes
id
43438894-881a-4d44-834a-4e23fb3b66ed
date added to LUP
2017-06-26 10:06:46
date last changed
2020-09-30 05:01:48
@article{43438894-881a-4d44-834a-4e23fb3b66ed,
  abstract     = {<p>Melt fragments in melt breccias from the Gardnos impact crater, Norway, contain abundant carbon. A high proportion of the carbon present in the original melt was preserved. The stripping of hydrogen from carbon during melting prevents later hydrocarbon formation, hence the carbon is fixed in place rather than volatilized. Underlying lithic breccias that were not melted record hydrocarbon generation as a response to less extreme heating. Despite the high-temperature history of the melt, the carbon from the Gardnos impact crater is highly disordered, rather than ordered crystalline graphite, and in this respect, it is comparable with carbon in chondrite chondrules. Disordered carbon bears functional groups upon weathering, and, therefore, carbon preserved through impact or other melting may be available for reworking into biologically relevant organic molecules.</p>},
  author       = {Parnell, John and Lindgren, Paula},
  issn         = {0091-7613},
  language     = {eng},
  number       = {12},
  pages        = {1029--1032},
  publisher    = {Geological Society of America},
  series       = {Geology},
  title        = {Survival of reactive carbon through meteorite impact melting},
  url          = {http://dx.doi.org/10.1130/G22731A.1},
  doi          = {10.1130/G22731A.1},
  volume       = {34},
  year         = {2006},
}