000			02056nab a2200217 4500
005			20260520000319.0
008			260224s2015 xxu ing
041			_aInglés
245	0	0	_aInfluence of mobile shale on thrust faults _bInsights from discrete element simulations
260			_a _b _cmar. 2015
270			_a18/06/2015 ; 18/06/2015
300			_a29 p. ; 403-432
520			_aTranscripción del resumen del autor: We study the effects of sedimentary loading of a mobile shale substrate, using two-dimensional discrete element modeling. We develop an updip extensional zone connected at depth to a downdip contractional zone, allowing us to study the formation of gravity-driven fold and thrust belts, and the evolution of décollements within this system. We compare our models to the Niger Delta type locale for shale tectonics. In general, most seismic interpretations of the Niger Delta include décollement(s) at the top of the mobile shale unit, but exact locations vary depending on area of investigation. Our models, particularly ones with mobile shale thicker than 2 km (1.2 mi), show more diffuse décollements, spanning the width of the mobile shale unit, which propagate out in front of the syntectonic sediment wedge and connect normal faults in the extensional zone with toe thrusts in the contractional zone. We also look at the distributions of stress and strain within our models, plotting the distributions of BLTN14003eq1 (maximum principal stress) and relating that to the vergence of thrust faults developed in our models. We quantify the amount of strain in different sections of the models, showing that extension is much greater than compression in the fold and thrust belt(s) alone, and that compression is distributed throughout the model, including in front of the fold and thrust belt.
581			_a3
773	0		_tAAPG Bulletin _g99
942			_cARTICULO
100	1		_aDean, Sarah _954542
100	1		_aMorgan, Julia _954543
100	1		_aBrandenburg, J.P. _947079
999			_c188942 _d188942