The thermal alteration by pyrolysis of the organic component of small projectiles of mudrock during capture at hypervelocity

Bowden, Stephen and Court, R.W. and Milner, Daniel and Baldwin, Emily C. and Lindgren, Paula and Crawford, Ian A. and Parnell, John and Burchell, Mark J. (2008) The thermal alteration by pyrolysis of the organic component of small projectiles of mudrock during capture at hypervelocity. Journal of Analytical and Applied Pyrolysis, 82 (2). pp. 312-314. ISSN 0165-2370. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1016/j.jaap.2008.05.002

Abstract

In a series of experiments the pyrolytic effects of the heating induced during the hypervelocity impact (HVI) of small projectiles of high TOC mudrock were observed. Impacts at these high speeds (km s(-1)) release sufficient energy to vaporise metal projectiles, and the temperatures created greatly exceed the pyrolysis temperatures typically employed during laboratory studies of the thermal alteration of sedimentary organic matter. Despite this the organic geochemical analyses of projectiles of Orcadian Laminite impacted into targets of sand and water at hypervelocities provides evidence that the structural backbone of biomarkers has remained intact and that only a comparatively low degree of thermal alteration (pre-oil window) has occurred. While further studies are necessary, it appears that the organic component of a projectile captured at hypervelocity will be a slightly thermally altered sample of its precursor.

Item Type: Article
Uncontrolled keywords: hypervelocity impact biomarker
Subjects: Q Science > QB Astronomy
Q Science > QD Chemistry
Q Science > QE Geology > QE515 Geochemistry
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Suzanne Duffy
Date Deposited: 05 Feb 2009 09:39
Last Modified: 13 May 2014 13:56
Resource URI: http://kar.kent.ac.uk/id/eprint/14836 (The current URI for this page, for reference purposes)
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