000			01585nab a2200205 4500
005			20260525052259.0
008			260224s2011 xxu
100	1		_aClauer, Norbert _913870
100	1		_aJourdan, Fred _952235
100	1		_aZwingmann, Horst _946821
245	0	0	_aDating petroleum emplacement by illite 40Ar/39 laser stepwise heating _bDiscussion
260			_cdic. 2011
270			_a28/03/2012 ; 28/03/2012
300			_a4 p. ; 2107-2111
520			_aTranscripción del resumen del autor: Isotopic dating of diagenetic processes in relation to hydrocarbon charge in buried sedimentary sequences is of importance to the oil industry. Yun et al. recently published in the AAPG Bulletin (v. 94, no. 6, p. 759-771) on that topic a study entitled, "Dating Petroleum Emplacement by Illite 40Ar/39Ar Laser Stepwise Heating Technique." This study raises questions about basic aspects of 40Ar/39Ar dating fine-grained authigenic clay minerals, describes flawed methodology, and ignores important previous work. As isotopic dating of diagenetic processes may interest readers of the AAPG Bulletin that are not necessarily specialists in either isotopic geochronology or clay mineralogy, it appeared necessary to comment on both the technical aspects and the scientific interpretations of this study. We discuss especially the fact that the authors discarded 39Ar recoil followed by an evaluation of its impact on the results and the interpretations.
581			_a12
773	0		_tAAPG Bulletin _g95
942			_cARTICULO _2ddc
999			_c186905 _d186905