Surficial geologic maps along the riparian zone of the Animas River and its headwater tributaries, Silverton to Durango, Colorado, with upper Animas River watershed gradient profiles

This product consists of Adobe Acrobat .PDF format documents for 10
surficial geologic strip maps along the Animas River watershed from its
major headwater tributaries, south to Durango, Colo. The Animas River
originates in the San Juan Mountains north of the historic mining town
of Silverton, Colo. The surficial geologic maps identify surficial
deposits, such as floodplain, and terrace gravels, alluvial fans,
glacial till, talus, colluvium, landslides, and bogs. Sixteen primary
units were mapped that included human-related deposits and structures,
eight alluvial deposits, four colluvial deposits, one glacial deposit,
one travertine deposit, and undifferentiated bedrock. Each of the
surficial geologic strip maps has .PDF links to surficial geology
photographs, which enables the user to take a virtual tour of these
deposits. Geochemical data collected from mapped surficial deposits
that pre-date and post-date mining activity have aided in determining
the geochemical baseline in the watershed. Several photographs with
their corresponding geochemical baseline profiles are accessible
through .PDF links from several of the maps. A single coverage for all
surficial deposits mapped is included as an ArcInfo shape file and as
an Arc Export format .e00 file.