Thermal alteration of organic matter in an impact crater and the duration of postimpact heating

John Parnell, G. R. Osinski, P. Lee, P. F. Green, M. Baron

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The 24-km-diameter Tertiary Haughton impact structure formed in rocks that contained preexisting liquid hydrocarbons. Biomarker ratios in the hydrocarbons show a consistent pattern of variation in degree of heating across the structure. The heating reached a maximum at the crater center and is attributed to hydrothermal activity following impact. Kinetic modeling suggests a time scale of similar to 5 k.y. for the heating, at a maximum temperature of 210 degrees C. The short time scale suggests that in moderate-sized craters, which are abundant on Mars, heating is not so extensive that fossil or extant organic matter would be obliterated.

Original languageEnglish
Pages (from-to)373-376
Number of pages3
JournalGeology
Volume33
DOIs
Publication statusPublished - May 2005

Keywords

  • Haughton impact structure
  • impact craters
  • biomarkers
  • thermal maturity
  • thermal alteration
  • Mars
  • ARCTIC CANADA
  • KINETIC-MODEL
  • MATURITY
  • ORIGIN
  • REFLECTANCE
  • MATURATION
  • GENERATION
  • LIFE
  • OILS

Cite this

Thermal alteration of organic matter in an impact crater and the duration of postimpact heating. / Parnell, John; Osinski, G. R.; Lee, P.; Green, P. F.; Baron, M.

In: Geology, Vol. 33, 05.2005, p. 373-376.

Research output: Contribution to journalArticle

Parnell, John ; Osinski, G. R. ; Lee, P. ; Green, P. F. ; Baron, M. / Thermal alteration of organic matter in an impact crater and the duration of postimpact heating. In: Geology. 2005 ; Vol. 33. pp. 373-376.
@article{5f4f4be89fd241a29b3a58807c46d931,
title = "Thermal alteration of organic matter in an impact crater and the duration of postimpact heating",
abstract = "The 24-km-diameter Tertiary Haughton impact structure formed in rocks that contained preexisting liquid hydrocarbons. Biomarker ratios in the hydrocarbons show a consistent pattern of variation in degree of heating across the structure. The heating reached a maximum at the crater center and is attributed to hydrothermal activity following impact. Kinetic modeling suggests a time scale of similar to 5 k.y. for the heating, at a maximum temperature of 210 degrees C. The short time scale suggests that in moderate-sized craters, which are abundant on Mars, heating is not so extensive that fossil or extant organic matter would be obliterated.",
keywords = "Haughton impact structure, impact craters, biomarkers, thermal maturity, thermal alteration, Mars, ARCTIC CANADA, KINETIC-MODEL, MATURITY, ORIGIN, REFLECTANCE, MATURATION, GENERATION, LIFE, OILS",
author = "John Parnell and Osinski, {G. R.} and P. Lee and Green, {P. F.} and M. Baron",
year = "2005",
month = "5",
doi = "10.1130/G21204.1",
language = "English",
volume = "33",
pages = "373--376",
journal = "Geology",
issn = "0091-7613",
publisher = "GEOLOGICAL SOC AMER, INC",

}

TY - JOUR

T1 - Thermal alteration of organic matter in an impact crater and the duration of postimpact heating

AU - Parnell, John

AU - Osinski, G. R.

AU - Lee, P.

AU - Green, P. F.

AU - Baron, M.

PY - 2005/5

Y1 - 2005/5

N2 - The 24-km-diameter Tertiary Haughton impact structure formed in rocks that contained preexisting liquid hydrocarbons. Biomarker ratios in the hydrocarbons show a consistent pattern of variation in degree of heating across the structure. The heating reached a maximum at the crater center and is attributed to hydrothermal activity following impact. Kinetic modeling suggests a time scale of similar to 5 k.y. for the heating, at a maximum temperature of 210 degrees C. The short time scale suggests that in moderate-sized craters, which are abundant on Mars, heating is not so extensive that fossil or extant organic matter would be obliterated.

AB - The 24-km-diameter Tertiary Haughton impact structure formed in rocks that contained preexisting liquid hydrocarbons. Biomarker ratios in the hydrocarbons show a consistent pattern of variation in degree of heating across the structure. The heating reached a maximum at the crater center and is attributed to hydrothermal activity following impact. Kinetic modeling suggests a time scale of similar to 5 k.y. for the heating, at a maximum temperature of 210 degrees C. The short time scale suggests that in moderate-sized craters, which are abundant on Mars, heating is not so extensive that fossil or extant organic matter would be obliterated.

KW - Haughton impact structure

KW - impact craters

KW - biomarkers

KW - thermal maturity

KW - thermal alteration

KW - Mars

KW - ARCTIC CANADA

KW - KINETIC-MODEL

KW - MATURITY

KW - ORIGIN

KW - REFLECTANCE

KW - MATURATION

KW - GENERATION

KW - LIFE

KW - OILS

U2 - 10.1130/G21204.1

DO - 10.1130/G21204.1

M3 - Article

VL - 33

SP - 373

EP - 376

JO - Geology

JF - Geology

SN - 0091-7613

ER -