5 páginas.

4 páginas.

Se presentan los resultados de la determinación de anomalías climáticas a partir de un núcleo de perforación del fondo de la laguna Huacarpay. Para tal efecto, se utilizaron proxies de diatomeas, polen, esporas y minerales que indican estadios de sequía y ambientes reductores.

The abandoned Cecilia Pb-Zn-Ag mine is located at the headwaters of the Lake Titicaca watershed in the Altiplano of Peru. The site is characterized by three months of high precipitation and nine months of limited precipitation. The environmental geochemical characterization of the abandoned mine was done to evaluate environmental risks at the site from mine wastes and mine drainage, and their potential for downstream impacts on water quality in Lake Titicaca. The approach included sampling of mine waste, water, and sediment. Composite mine waste samples were collected from six main piles (four tailings, two waste rock). The surface water was collected from (1) drainage from mine portals; (2) the Cecilia and Crucero rivers upstream of mine influences; (3) the impacted reach of the Cecilia River down to its confluence with the Crucero River; and (4) the Crucero River, which receives draina...

5 páginas.