02715nmc a2200241 4500 20260520010331.0 260224s xxu CD I116 64 0015469 Análisis diagnético y estructural en la formación Tunas Pozo Pang001. Pérmico de la Cuenca de Claromecó. Sierras Australes de la Provincia de Buenos Aires, Argentina 10/11/2016 ; 10/11/2016 17 p. Structural and Diagenetic analysis of Tunas Formation, PANG0001 well. Permian of Claromecó Basin, Sierras Australes fold and thrust belt, Buenos Aires province, Argentina The Tunas Formation (Permian, Harrington 1947) outcrops in Sierras Australes of Buenos Aires Province and continues to the east in Claromecó Basin as subsurface record. In order to know about diagenesis level, structural evolution and tectonic context, petrographic analysis on well PANG0001 coal samples and magnetic suceptibility anisotropy (MSA) studies of outcropping samples were made. Coals are formed by collovitrinite and gelovitrinite (Vitrinite Group) belts, alternate with fusinite (Inertinite Group) belts. The values of vitrinite reflectance are between 1,3 and 2,38% R0, wich allow us to classify the coals as semianthracitic to low volatile bituminous. According to this, the Tunas Formation reaches the methane gas to wet to condensate gases window generation. The Kmax axes of AMS ellipsoids show a NW-SE direction showing a maximum stress direction from SW-NE. The Kmin axes, with a SW-NE strike, are in horizontal positions at west progressively changing to vertical positions at east, while the anisotropy magnitude decreases toward the East. All these aspects indicate a progression of the magnetic fabric, from a tectonic imprint to a sedimentary fabric, evidencing a decreasing of the deformation to the East while principal compressive stress comes from SW. This research takes into account different methods and allows a good knowledge about diagenesis degree and deformation features recording. Results inform that the Tunas Formation have reached the catagenesis-metagenesis zone and that can be characterized as a potential component of an oil/gas/coal system. CONGTP Arzadún, Guadalupe 982 Nela Tomezzoli, Renata 55755 Cisternas, María Eugenia 55756 Cesaretti, Nora Noemí 981 Fortunatti, Natalia 55757 Congreso de Exploración y Desarrollo de Hidrocarburos (9no. : 2014 nov. 3-7 : Mendoza) 54287 189827 189827 https://biblioteca.iapg.org.ar/ArchivosAdjuntos/CONEXPLOR2014/481-Analisisdiagenetico.pdf 0 0 0 0 257646 BAAB BAAB CD I116 64 0015469 2026-03-06 200062073 0 CD I116 64 0015469 200062073 2026-03-06 00:19:59 2026-03-06 ARCHIVO