Some maps of the Chilean earthquake:
1) Henry Fountain of the NY Times writes about the geologic setting of the earthquake accompanied by tectonic and fault maps of the region.
2) The United States Geological Survey has a collection of maps and reports on their earthquake site.
3) GeoCommons, which is a public mapping site run by FortiusOne, a data visualization company, has a series of interactive GIS layers on Chile. In case you haven't come across GeoCommons, I highly recommend their data Finder and map Maker applications.