Depósitos lacustres holocenos en el valle del Río Jáchal (Precordillera Andina, San Juan, Argentina)

• F. Colombo ^[1] ; P. Busquets ^[1] ; N. Solé de Porta ^[1] ; N. Heredia ^[2] ; L.R. Rodríguez-Fernández ^[2] ; C.O. Limarino ^[3]
  1. [1] Universitat de Barcelona

     Universitat de Barcelona

     Barcelona, España

     
  2. [2] Instituto Geológico y Minero de España

     Instituto Geológico y Minero de España

     Madrid, España

     
  3. [3] Universidad de Buenos Aires

     Universidad de Buenos Aires

     Argentina

     

  Mostrar afiliaciones +
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 6, 2, 2004 (Ejemplar dedicado a: IV Congreso Geológico de España), págs. 47-50
• Idioma: español
• Enlaces
  • Texto Completo Ejemplar
• Resumen

  • There are Holocene significant sedimentary accumulations, characterized by fine-grained materials in the Jachal River valley. These deposits are interpreted as a sedimentary infill of shallow temporary lakes with few fossil remains such as fresh-water gastropoda and some Palynomorphs. The variability of pollen association suggests significant variations of climate in the studied area. The vegetal remains found in the Jáchal River valley suggest that the humidity climatic conditions where less marked than that in the San Juan River valley placed one hundred kilometers to the south.

    These data suggest the presence of microclimates probably controlled by the topography of the Andean Ranges