Application of organic geochemistry to detect signatures of organic matter in the Haughton impact structure

J Parnell, P Lee, G R Osinski, C S Cockell

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Organic geochemistry applied to samples of bedrock and surface sediment from the Haughton impact structure detects a range of signatures representing the impact event and the transfer of organic matter from the crater bedrock to its erosion products. The bedrock dolomite contains hydrocarbon-bearing fluid inclusions which were incorporated before the impact event. Comparison of biomarker data from the hydrocarbons in samples inside and Outside of the crater show the thermal signature of an impact. The occurrence of hydrocarbon inclusions in hydrothermal mineral samples shows that organic matter was mobilized and migrated in the immediate aftermath of the impact. The hydrocarbon signature was then transferred from bedrock to the crater-fill lacustrine deposits and present-day sediments in the crater, including wind-blown detritus in snow/ice. Separate signatures are detected from modern microbial life in crater rock and sediment samples. Signatures in Haughton crater samples are readily detectable because they include hydrocarbons generated by the burial of organic matter. This type of organic matter is not expected in crater samples oil other planets, but the Haughton data show that, using very high resolution detection of organic Compounds,. any signature of primitive life in the crater rocks Could be transferred to surface detritus and so extend the sampling medium.

Original languageEnglish
Pages (from-to)1879-1885
Number of pages7
JournalMeteoritics & Planetary Sciences
Volume40
Publication statusPublished - 2005

Keywords

  • DEVON ISLAND
  • HYDROTHERMAL ACTIVITY
  • TARGET ROCKS
  • CANADA
  • SWEDEN
  • CRATER
  • FOSSILS
  • NORWAY
  • LIFE
  • OILS

Cite this

Application of organic geochemistry to detect signatures of organic matter in the Haughton impact structure. / Parnell, J ; Lee, P ; Osinski, G R ; Cockell, C S .

In: Meteoritics & Planetary Sciences, Vol. 40, 2005, p. 1879-1885.

Research output: Contribution to journalArticle

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title = "Application of organic geochemistry to detect signatures of organic matter in the Haughton impact structure",
abstract = "Organic geochemistry applied to samples of bedrock and surface sediment from the Haughton impact structure detects a range of signatures representing the impact event and the transfer of organic matter from the crater bedrock to its erosion products. The bedrock dolomite contains hydrocarbon-bearing fluid inclusions which were incorporated before the impact event. Comparison of biomarker data from the hydrocarbons in samples inside and Outside of the crater show the thermal signature of an impact. The occurrence of hydrocarbon inclusions in hydrothermal mineral samples shows that organic matter was mobilized and migrated in the immediate aftermath of the impact. The hydrocarbon signature was then transferred from bedrock to the crater-fill lacustrine deposits and present-day sediments in the crater, including wind-blown detritus in snow/ice. Separate signatures are detected from modern microbial life in crater rock and sediment samples. Signatures in Haughton crater samples are readily detectable because they include hydrocarbons generated by the burial of organic matter. This type of organic matter is not expected in crater samples oil other planets, but the Haughton data show that, using very high resolution detection of organic Compounds,. any signature of primitive life in the crater rocks Could be transferred to surface detritus and so extend the sampling medium.",
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AU - Parnell, J

AU - Lee, P

AU - Osinski, G R

AU - Cockell, C S

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N2 - Organic geochemistry applied to samples of bedrock and surface sediment from the Haughton impact structure detects a range of signatures representing the impact event and the transfer of organic matter from the crater bedrock to its erosion products. The bedrock dolomite contains hydrocarbon-bearing fluid inclusions which were incorporated before the impact event. Comparison of biomarker data from the hydrocarbons in samples inside and Outside of the crater show the thermal signature of an impact. The occurrence of hydrocarbon inclusions in hydrothermal mineral samples shows that organic matter was mobilized and migrated in the immediate aftermath of the impact. The hydrocarbon signature was then transferred from bedrock to the crater-fill lacustrine deposits and present-day sediments in the crater, including wind-blown detritus in snow/ice. Separate signatures are detected from modern microbial life in crater rock and sediment samples. Signatures in Haughton crater samples are readily detectable because they include hydrocarbons generated by the burial of organic matter. This type of organic matter is not expected in crater samples oil other planets, but the Haughton data show that, using very high resolution detection of organic Compounds,. any signature of primitive life in the crater rocks Could be transferred to surface detritus and so extend the sampling medium.

AB - Organic geochemistry applied to samples of bedrock and surface sediment from the Haughton impact structure detects a range of signatures representing the impact event and the transfer of organic matter from the crater bedrock to its erosion products. The bedrock dolomite contains hydrocarbon-bearing fluid inclusions which were incorporated before the impact event. Comparison of biomarker data from the hydrocarbons in samples inside and Outside of the crater show the thermal signature of an impact. The occurrence of hydrocarbon inclusions in hydrothermal mineral samples shows that organic matter was mobilized and migrated in the immediate aftermath of the impact. The hydrocarbon signature was then transferred from bedrock to the crater-fill lacustrine deposits and present-day sediments in the crater, including wind-blown detritus in snow/ice. Separate signatures are detected from modern microbial life in crater rock and sediment samples. Signatures in Haughton crater samples are readily detectable because they include hydrocarbons generated by the burial of organic matter. This type of organic matter is not expected in crater samples oil other planets, but the Haughton data show that, using very high resolution detection of organic Compounds,. any signature of primitive life in the crater rocks Could be transferred to surface detritus and so extend the sampling medium.

KW - DEVON ISLAND

KW - HYDROTHERMAL ACTIVITY

KW - TARGET ROCKS

KW - CANADA

KW - SWEDEN

KW - CRATER

KW - FOSSILS

KW - NORWAY

KW - LIFE

KW - OILS

M3 - Article

VL - 40

SP - 1879

EP - 1885

JO - Meteoritics & Planetary Sciences

JF - Meteoritics & Planetary Sciences

SN - 1086-9379

ER -