Na 1 Nachlass Max Horkheimer, 591 - Korrespondenzen mit Friedrich (Frederick) Pollock (p. VI 38, 283-496)

4 Briefe zwischen Max Horkheimer und Nicholas Jory; 3 Briefe zwischen Nicholas Jory und Frederick Pollock, 1956; 1 Brief von Frederick Pollock an die First National City Bank (New York), 27.04.1956; 1 Brief von dem Grand Hotel & Kurhaus (Bad Tarasp) an den "Gast", März 1956; 1 Brief von Franz Ollig an Frederick Pollock, 31.01.1956; 1 Brief von Erna Schroeter an Emmy Henne, 14.01.1956; 1 Brief von The State Bar of California (San Francisco) an Leo Salon, 21.11.1956; 1 Brief von Frederick Pollock an Hans Moeller, 16.10.1956; 2 Briefe zwischen Frederick Pollock und Frederick J. Wild, 1956; 1 Brief von Frederick Pollock an Alice H. Maier, 19.06.1956; 1 Brief von Frederick Pollock an Leo Löwenthal, 16.06.1956; 1 Brief von dem Hotel "Zum Schützen" (München) an Frederick Pollock, 28.05.1956;

Ms. lat. qu. 38 - Collegium practicum in Jonstoni Ideam medicinae practicae

Vorbesitzer: Johannes Matthaeus Valentini

Ms. lat. qu. 97 Bd. 2 - Memorie originali risguardanti le belle arti, Nr. 38 - 68

Vorbesitzer: Michelangelo Gualandi;

Ms. lat. oct. 38 - Collegium casuale

Vorbesitzer: Johannes Matthaeus Valentini

Rb, Sr, Sm and Nd concentrations and isotopic composition of basalts from DSDP Leg 74 (Table 1)

Basement intersected in DSDP holes 525A, 528 and 527 on the Walvis Ridge consists of submarine basalt flows and pillows with minor intercalated sediments. These holes are situated on the crest and mid and lower northwest flank of a NNW-SSE-trending ridge block which would have closely paralleled the paleo mid-ocean ridge (Rabinowitz and LaBrecque, 1979 doi:10.1029/JB084iB11p05973, Moore et al. (1983 doi:10.1130/0016-7606(1983)94<907:TWRTDS>2.0.CO;2). The basalts were erupted approximately 70 m.y. ago, an age equivalent to that of immediately adjacent oceanic crust in the Angola Basin and coraistent with formation at the paleo mid-ocean ridge (Moore et al., 1983). The basalt types vary from aphyric quartz tholeiites on the ridge crest to highly plagioclase phyric olivine tholeiites on the ridge flank. These show systematic differences in incompatible trace element and isotopic composition. Many element and isotope ratio pairs form systematic trends with the ridge crest basalts at one end and the highly phyric ridge flank basalts at the other. The low 143Nd/144Nd (0.51238), 206Pb/204Pb (17.54), 207Pb/204Pb (15.47), 208Pb/204Pb (38.14) and high 87Sr/86Sr (0.70512) ratios of the ridge crest basalts suggest derivation from an old Nd/Sm-, Rb/Sr- and Pb/U-enriched mantle source. This isotopic signature is similar to that of alkaline basalts on Tristan da Cunha but offset to significantly lower Nd and Pb isotopic ratios. The isotopic ratio trends may be extrapolated beyond the ridge flank basalts with higher 143Nd/144Nd (0.51270), 206Pb/204Pb (18.32), 207Pb/204Pb (15.52), 208Pb/204Pb (38.77) and lower 87Sr/86Sr (0.70417) ratios in the direction of increasingly Nd/Sm-, Rb/Sr- and Pb/U-depleted source compositions. These isotopic correlations are equally consistent with mixing of depleted and enriched end member melts or partial melting of an inhomogeneous, variably enriched mantle source. However, observed Zr-Ba-Nb-Y interelement relationships are inconsistent with any simple two-component model of magma mixing, as might result from the rise of a lower mantle plume through the upper mantle. Incompatible element and Pb isotopic systematics also preclude extensive involvement of depleted (N-type) MORB material or its mantle sources. In our preferred petrogenetic model the Walvis Ridge basalts were derived by partial melting of mantle similar to an enriched (E-type) MORB source which had become heterogeneous on a small scale due to the introduction of small-volume melts and metasomatic fluids.

Strike-slip faults mediate the rise of crustal-derived fluids and mud volcanism in the deep sea

We report on newly discovered mud volcanoes located at about 4500 m water depth 90 km west of the deformation front of the accretionary wedge of the Gulf of Cadiz, and thus outside of their typical geotectonic environment. Seismic data suggest that fluid flow is mediated by a >400-km-long strike-slip fault marking the transcurrent plate boundary between Africa and Eurasia. Geochemical data (Cl, B, Sr, 87Sr/86Sr, Delta18O, DeltaD) reveal that fluids originate in oceanic crust older than 140 Ma. On their rise to the surface, these fluids receive strong geochemical signals from recrystallization of Upper Jurassic carbonates and clay-mineral dehydration in younger terrigeneous units. At present, reports of mud volcanoes in similar deep-sea settings are rare, but given that the large area of transform-type plate boundaries has been barely investigated, such pathways of fluid discharge may provide an important, yet unappreciated link between the deeply buried oceanic crust and the deep ocean.

Del libro didáctico a la secuencia de formación: propuestas de intervención pedagógica. 16H/342

Este proyecto se desprende de El LD como material para la enseñanza de PLE -Perspectivas políticas: industria editorial y trabajo simbólico culminado en 2011. El análisis de los LDs (libros didácticos) de PLE (Portugués Lengua Extranjera) nos proporcionó bases teórico-metodológicas para la reflexión sobre las configuraciones textuales, discursivas y semióticas acerca de la enseñanza del PLE en la Argentina y en nuestra región. Sin embargo, consideramos que nuestra tarea investigativa debe avanzar en una propuesta de intervención pedagógica que ayude a explorar nuevas estrategias y prácticas de comprensión y producción, a partir de materiales que favorezcan aprendizajes significativos. Para ello revisamos las conclusiones elaboradas en la etapa anterior en relación con las matrices discursivas predominantes de los LDs focalizadas en las dimensiones históricopolíticas y de gramaticalización de la lengua, en las matrices ético-culturales de la identidad brasileña y en las configuraciones editoriales del mundo de los negocios. Nuestro objetivo es elaborar propuestas de intervención para la enseñanza del PLE que ponderen críticamente los posicionamientos ideológicos respecto de la lengua y las textualidades que propicien la condición dialógica del quehacer educativo. Dichas propuestas serán consideradas como secuencias de formación, entendidas como focos del proceso polisémico de los saberes implicados en el aprendizaje de una lengua extranjera.