SciELO - Scientific Electronic Library Online

 
vol.28 número1Late Triassic detrital zircons in meta-turbidites of the Chonos Metamorphic Complex, southern ChileA possible Plio-Pleistocene tsunami deposit, Hornitos, northern Chile índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Revista geológica de Chile

versión impresa ISSN 0716-0208

Resumen

CISTERNAS, Marco  y  ARANEDA, Alberto. Variaciones isotópicas (210Pb, 137Cs) antropogénicas en el registro estratigráfico de un lago de la cordillera de Nahuelbuta, Chile. Rev. geol. Chile [online]. 2001, vol.28, n.1, pp.105-115. ISSN 0716-0208.  http://dx.doi.org/10.4067/S0716-02082001000100006.

Anthropogenic isotope (210Pb, 137Cs) variations in the sedimentary record from a lake in the Nahuelbuta mountain range, Chile. The activity and distribution of 210Pb and 137Cs through the sedimentary record of a lake, which is located in the Nahuelbuta mountain range, are influenced by anthropic activity. Isotope analyses, X-rays, magnetic susceptibility, pollen and grain size analyses show both erosion rates variations-produced by land use changes within the watershed-and the 137Cs atmospheric inputs have affected on the behavior of those isotopes in the record. The role of some natural variables -as the low ratio of land to ocean in southern latitudes, and the Nahuelbuta mountain range locations are also discussed

Palabras clave : Lacustrine sedimentary record; 210Pb; 137Cs; Nahuelbuta mountain range; Central Chile.

        · resumen en Español     · texto en Español

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons