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SOUTH AMERICA (general): GEOLOGY & LANDFORMS Peakware - South America Relief Map South America Volcanoes and Volcanics From the USGS, Open File Report 97-470D: Geologic Map showing geology, oil and gas fields; Geologic Map showing oil and gas fields BRAZIL: PHYSICAL GEOGRAPHY SciELO Brazil, the Scientific Electronic Library Online, makes recent issues of some Brazilian journals available, e.g., Anais da Academia Brasileira de Ciências (2000-2003) Revista Brasileira de Geofísica (1997-2001) BRAZIL: GEOLOGY Serviço Geológico do Brasil