Inc. hebr. 57 - Proverbia

Vorbesitzer: Wilhelm Carl von Rothschild

El teatro misional jesuítico en el Brasil: posibles lecturas y aportes. En: Estudios Regionales, v. 1, n° 1

La conquista que de América hicieron los países de Europa, representa, en primer término la expresión de la soberbia de creer que el mayor desarrollo tecnológico justificaba el dominio, la expollación económica o la sublimación de la voluntad de los vencidos a través de la conquista espiritual. Son muchos los documentos que dan testimonio de la utilización de representaciones dramáticas en la evangelización. Es este Teatro de carácter didáctico el que ha motivado nuestro interés. Los jesuitas lo utilizaron en las "Misiones de Indios guaranies" y también entre los Tupíes y con la misma finalidad lo usó el Padre Anchieta, en el Brasil.En ambos casos el evangelizador operó con una realidad similar: los fundamentos míticos de la cultura tupí-guaraní.

Diagenetic alteration of organic matter in DSDP Leg 57 Holes

I analyzed Leg 57 sediments organogeochemically and spectroscopically. Organic carbon and extractable organic matter prevail from the Pliocene to the Miocene. Humic acids occur widely from the Pleistocene to the lower Miocene and one portion of the Oligocene. The absence of humic acids in Oligocene and Cretaceous samples suggests that humic acids had changed to kerogen. Visible spectroscopic data reveal that humic acids in this study have a low degree of condensed aromatic-ring system, which is a feature of anaerobic conditions during deposition, and that chlorophyll derivatives that had at first combined with humic acids moved to the solvent- soluble fraction during diagenesis. The elemental compositions of humic acids show high H/C and O/C ratios, which seem appropriate to a stage before transformation to kerogen. The relation between the linewidths and g-values on the electron spin resonance data indicates that the free radicals in humic acids are quite different from those in kerogen. The low spin concentrations of kerogen and the yields of humic acids up to the lower Miocene demonstrate that organic matter in these sediments is immature. The foregoing indicate the necessity to isolate humic acids even in ancient rocks in the study of kerogen.