J.P. Joublan, A. Venegas V., R. Wilckens E., Wendy Perca Becerra,
Tópico(s): Plant Physiology and Cultivation Studies
1998 - | Agro Sur
Gustavo Miranda-Díaz, Karl Riveros-Jensen, G. Heide, Andrew Menzies, W. Griem, Erick Araya-Tabilo, Gustavo Añasco-Leyton, Eduardo Medina,
The Portezuelo de Pajas Blancas deposit, located in northern Chile, represents a unique opportunity to constrain unusual geological processes involved in the genesis of sapphire-rich metasomatites ...
Tópico(s): Geochemistry and Geologic Mapping
2021 - Elsevier BV | Ore Geology Reviews
Tópico(s): Botanical Research and Chemistry
2010 - University of Chile | Anales de la Universidad de Chile
Gustavo Miranda-Díaz, Andrew Menzies, Karl Riveros-Jensen, G. Heide, Lena Bußmann, Birk Härtel, Roald Tagle, Eduardo Medina Pardo, W. Griem,
Abstract Portezuelo de Pajas Blancas' primary metasomatic deposits host sapphires that differ in size, colour, and colour distribution through different lithological units. The discovery of sapphire-bearing secondary aeolian placer deposits enabled a detailed analysis of sapphire types to determine the causes of this heterogeneity. Representative single sapphires from the primary and secondary deposits were analysed using various techniques, including SEM-CL, OM-CL, Micro-XRF, Raman spectroscopy, ...
Tópico(s): Geology and Paleoclimatology Research
2024 - Springer Science+Business Media | International Journal of Earth Sciences
William Nanavati, Cathy Whitlock, Valeria Outes, Gustavo Villarosa,
... of A. araucana ? Location Northernmost Patagonia, Argentina and Chile (37–40°S). Taxa Araucaria araucana , Nothofagus , Poaceae. Methods Sedimentary pollen and charcoal from Laguna Portezuelo (37.9°S, 71.0°W; 1,730 ... distribution of Araucaria in the central valley of Chile. In the middle and late Holocene, decreased temperatures and greater seasonality and ENSO activity increased precipitation variability allowing Araucaria expansion at its north‐eastern limit. (b) Greater abundance of Araucaria and heightened fire activity at L. Portezuelo after 370 BP coincided with increased Mapuche‐Pehuenche ...
Tópico(s): Pleistocene-Era Hominins and Archaeology
2020 - Wiley | Journal of Biogeography
Cecilia Hernández Sandoval, Félix Briones Quiroz,
... la actividad vitivinÃcola de la localidad de Portezuelo, de la Octava región de Chile. Se pretende demostrar la permanencia en la zona ...
Tópico(s): Wine Industry and Tourism
2018 - University of Tarapacá | Idesia
Axel E. Nielsen, José Berenguer, Cecilia Sanhueza,
... road that communicate the Atacama Desert (Antofagasta Region, Chile) and the Lipez Altiplano (Department of Potosi, Bolivia). The first, which extends between Licancabur and Laguna Chojllas, was part of a road that connected the Inka node of San Pedro de Atacama with the Chicha Valleys and the Argentine Puna. The second enters Bolivia through Portezuelo del Inca, coming from the Salado River basin, ...
Tópico(s): Latin American history and culture
2006 - National University of Central Buenos Aires | Intersecciones en antropología
José A. Naranjo, Luis E. Lara,
... se formo un nuevo crater compuesto en el portezuelo entre los jovenes volcanes Nuevo y Arrau. El ...
Tópico(s): Geology and Paleoclimatology Research
2004 - National Geology and Mining Service | Revista geológica de Chile
Victoria Castro, Varinia Várela, Carlos Aldunate, Edgardo Araneda,
... Camino del Kollau" en la Puna de Atacama, Chile.Se propone el uso de la tradición oral ...
Tópico(s): Geography and Education Methods
2004 - University of Tarapacá | Chungara
Alejandro Kramarz, Alberto Rubio Garrido, Analía M. Forasiepi, Mariano Bond, Claudia P. Tambussi,
... de Cerro Bandera y noroeste de Sierra del Portezuelo; nuevos afloramientos son reconocidos aqui en la vertiente ...
Tópico(s): Bat Biology and Ecology Studies
2005 - National Geology and Mining Service | Revista geológica de Chile
Marcelo J. Kogan, Rodrigo Figueroa,
... growing seasons, two field experiments were conducted at Portezuelo (72°24' Long W -36°31' Lat S) ...
Tópico(s): Seedling growth and survival studies
1999 - Austral University of Chile | Bosque (Valdivia)
Guillermo R. Muñoz P., Claudia A. Muñoz Z.,
... sectors of 3 communes of province of Ñuble (Portezuelo, San Ignacio and Quillón) and other in the ...
Tópico(s): Public Health and Environmental Issues
2010 - | Avances en Ciencias Veterinarias
R P Guillermo Muñoz, Alcalde Muñoz,
... sectors of 3 communes of province of Nuble (Portezuelo, San Ignacio and Quillon) and other in the ...
Tópico(s): Agricultural and Food Production Studies
2010 - | Avances en Ciencias Veterinarias