000			02572nab a2200241 4500
005			20260520000321.0
008			260224s2016 xxu ing
041			_aInglés
245	0	0	_aPorosity and pore size distribution in mudrocks from the Belle Fourche and Second White Specks Formations in Alberta, Canada
260			_a _b _cago. 2016
270			_a31/08/2016 ; 31/08/2016
300			_a23 p. ; 1265-1288
520			_aTranscripción del resumen del autor: The distribution of porosity was examined on seven drill cores from west–central Alberta encompassing the Belle Fourche and Second White Specks Formations. These Cenomanian–Turonian mudrocks from the Western Canada Sedimentary Basin exhibit good organic richness (>2 wt. % total organic carbon) and marine kerogen type II with limited kerogen type III. With the increasing thermal maturity from approximately 0.43% vitrinite reflectance (Ro) to approximately 0.90% Ro, the total porosity decreases from approximately 9 to approximately 1 vol. %. This change translates to a reduction in total pore volume from approximately 0.05 to approximately 0.005 cm3/g and is accompanied by changes in relative proportions of micropore, mesopore, and macropore volumes. Variations in total porosity for the seven cores with different thermal maturities across Alberta are mainly related to mesoporosity and macroporosity, although the in-core variations in total porosity are mainly related to microporosity. In general, organic matter micropores contribute to the overall microporosity in the seven cores across the study area. The increase in the total pore volumes is in accordance with an increasing concentration of quartz, although increasing concentrations of chlorite and kaolinite may contribute to greater abundance of micropores in the seven cores. The in-core variations suggest that greater contents of kaolinite and illite may contribute to increasing mesopore volumes. Variations in pore volumes and pore size distribution with depth within individual cores (representing specific thermal maturity level) differ from what is observed laterally, when cores of various thermal maturity levels across Alberta are compared, indicating complex controls on porosity systems.
581			_a8
773	0		_tAAPG Bulletin _g100
942			_cARTICULO
100	1		_aFurmann, Agnieszka _955621
100	1		_aMastalerz, Maria _944042
100	1		_aBish, David _955622
100	1		_aSchimmelmann, Arndt _944043
100	1		_aPedersen, Peter Kent _955623
999			_c189724 _d189724