Tectosedimentary evolution of the Payogastilla Group and and its relation to Cenozoic volcanic arc, in the Calchaquí, Tonco and Amblayo valleys, Salta province, Argentina

Las características estratigráficas y sedimentológicas de los depósitos del Grupo Payogastilla son aspectos muy importantes a tener en cuenta para investigar la evolución tecto-sedimentaria de la cuenca de antepaís andino en el noroeste de la Argentina. El límite estratigráfico inferior del Grupo Payogastilla está marcado por una paraconcordancia con los depósitos de post-rift de la Formación Lumbrera (Subgrupo Santa Bárbara, Grupo Salta). El límite estratigrá- fico superior de la Formación Los Colorados, es paraconcordante y discordante; la subsidencia de la cuenca fue pareja entre ~35 a 21 Ma. En el Mioceno medio a superior, los depósitos de la Formación Angastaco, con espesores de 4550 m (río Calchaquí) y 1500 m (Tonco) reflejan una importante influencia tectónica, la que delimitó el depocentro de la cuenca de Angastaco, con un inicio en el valle El Tonco (>13,7 Ma) y posteriormente en el valle Calchaquí (~13 Ma). Con posterioridad a los ~13 Ma se habrían desarrollado incipientes barreras orográficas en el este (sierras Los Colorados y León Muerto), que durante el Mioceno superior (10 a 5 Ma) se habrían reactivado para formar cadenas orográficas importantes. Durante el Plioceno se habrían reactivado nuevamente los alzamientos tectónicos, generando sistemas fluviales entrelazados gravosos, con una marcada proveniencia desde el este. Los niveles de tobas intercalados en los depósitos de las formaciones Angastaco y Palo Pintado, muestran una clara signatura de arco indicando su proveniencia del arco activo a esos tiempos, con características que indican una componente cortical participante en sus magmas. Mientras que, los niveles piroclásticos intercalados en la Formación San Felipe, por su mayor carácter peraluminoso y sus menores contenidos en Na20 respecto a K20, que las ubican en el campo de los granitos tipo S, dando idea de componentes corticales distintas.The stratigraphic and sedimentological characteristics of Payogastilla Group deposits are very important to study tecto-sedimentary evolution of the Andean foreland basin in northwestern Argentina. The lower stratigraphic boundary of Payogastilla Group with the Lumbrera Formation (Santa Barbara Subgroup, Salta Group) deposits is a paraconformity. The upper stratigraphic boundary, the Colorados Formations is a paraconformity and a unconformity, the subsidence of the basin was uniform and the duration of the initial deposit was about ~35 to 21 Ma. During the middle to upper Miocene, represented by Angastaco Formation deposits, with a thickness of 4550 m (in Calchaquí river) and 1500 m (in Tonco) it took place a major tectonic influence, which delimited the basin depocenter in Angastaco basin. This event started in Tonco valley (>13.7 Ma) and later continued in Calchaquí valley (~13 Ma). Also in the ~13 Ma it have developed two orographic barriers (Los Colorados and León Muerto ranges), in the eastern, that during the Late Miocene (10-5 Ma) would have been reactivated to an important orographic chains form. During the Pliocene the tectonic uplifts would have reactivated, being registered as alluvial fans with a strong provenance from the east. Levels tuff deposits intercalated in Angastaco and Palo Pintado formations, show a clear signature of the arc indicating their origin of the arc active to those times with features that indicate a crustal component in their magmas participant. While pyroclastic levels intercalated in San Felipe Formation, with higher peraluminous character and lower Na20 K20 content regarding, which lie in the area of the type S granites, giving different cortical components idea.Fil: Galli, Claudia. Universidad Nacional de Salta; ArgentinaFil: Coira, Beatriz Lidia Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; ArgentinaFil: Alonso, Ricardo Narciso. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina. Universidad Nacional de Salta; ArgentinaFil: Matteini, Massimo. Universidade Do Brasilia; BrasilFil: Hauser, Natalia. Universidade Do Brasilia; Brasi

Complete genome sequence of Meiothermus silvanus type strain (VI-R2).

Meiothermus silvanus (Tenreiro et al. 1995) Nobre et al. 1996 belongs to a thermophilic genus whose members share relatively low degrees of 16S rRNA gene sequence similarity. Meiothermus constitutes an evolutionary lineage separate from members of the genus Thermus, from which they can generally be distinguished by their slightly lower temperature optima. M. silvanus is of special interest as it causes colored biofilms in the paper making industry and may thus be of economic importance as a biofouler. This is the second completed genome sequence of a member of the genus Meiothermus and only the third genome sequence to be published from a member of the family Thermaceae. The 3,721,669 bp long genome with its 3,667 protein-coding and 55 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project

Complete genome sequence of Planctomyces limnophilus type strain (Mü 290).

Planctomyces limnophilus Hirsch and Müller 1986 belongs to the order Planctomycetales, which differs from other bacterial taxa by several distinctive features such as internal cell compartmentalization, multiplication by forming buds directly from the spherical, ovoid or pear-shaped mother cell and a cell wall which is stabilized by a proteinaceous layer rather than a peptidoglycan layer. Besides Pirellula staleyi, this is the second completed genome sequence of the family Planctomycetaceae. P. limnophilus is of interest because it differs from Pirellula by the presence of a stalk and its structure of fibril bundles, its cell shape and size, the formation of multicellular rosettes, low salt tolerance and red pigmented colonies. The 5,460,085 bp long genome with its 4,304 protein-coding and 66 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project