Coleccionar y comprender : Voces populares en la biblioteca modernista

El coleccionismo, como lógica privada para incorporar los objetos del mundo exterior, es una de las actividades asociadas a la estructura de sentimiento modernista que, en una fase más avanzada, reorienta sus intereses artísticos hacia la conquista de lo prosaico, y comienza a revisar los estereotipos culturales de lo nativo. Entre estos estereotipos se distingue el interés por el diálogo popular, que es percibido como objet trouvé e integrado en "El gran descubrimiento: los poderes secretos del lenguaje coloquial" (Octavio Paz). El presente trabajo pretende indagar los alcances de estas actitudes que conjugan lo privado (el coleccionismo) con la aproximación al panorama de los nuevos actores sociales, el registro de sus voces, en el caso de escritores que adscriben más o menos explícitamente a las propuestas modernistas (Emilio Becher, Emilio Ortiz Grognet, Charles de Soussens, Juan José de Soiza Reilly) en algunos casos, a su vez, inmersos en los medios de prensa, el foro en el que todas las voces se reúnen y se interpelan

Organic geochemistry of sediments of the Gulf of California

The effects of intrusive thermal stress have been studied on a number of Pleistocene sediment samples obtained from Leg 64 of the DSDP-IPOD program in the Gulf of California. Samples were selected from Sites 477, 478 and 481 where the organic matter was subjected to thermal stress from sill intrusions. For comparison purposes, samples from Sites 474 and 479 were selected as representative of unaltered material. The GC and GC-MS data show that lipids of the thermally unaltered samples were derived from microbial and terrestrial higher-plant detritus. Samples from sill proximities were found to contain thermally-derived distillates and those adjacent to sills contained essentially no lipids. Curie point pyrolysis combined with GC and GC-MS was used to show that kerogens from the unaltered samples reflected their predominantly autochthonous microbial origin. Pyrograms of the altered kerogens were much less complex than the unaltered samples, reflecting the thermal effects. The kerogens adjacent to the sills produce little or no pyrolysis products since these intrusions into unconsolidated, wet sediments resulted in in situ pyrolysis of the organic matter. Examination of the kerogens by ESR showed that spin density and line width pass through a maximum during the course of alteration but ESR g-values show no correlation with maturity. Stable carbon isotope (d13C) values of kerogens decrease by 1-1.5 per mil near the sills at Sites 477 and 481 and the atomic N/C decreases slightly with proximity to a smaller sill at Site 478. Differences in maturation behavior between Site 477 and 481 and Site 478 are attributed to dissimilarities in thermal stress and to chemical and isotopic heterogeneity of Guaymas Basin protokerogen.