This section will have text describing how to recognize the most common
rock and mineral types, as well as a set of pictures for each rock type
like those shown in this PDF file (1.2 MB).
This link brings up Google Maps in your browser, with tags of geologic
features such as outcrops. Click on the "Falling Rocks" marker,
and a description balloon is shown. These balloons will
eventually contain description of the rock types at the geologic
feature, any cautions about access, and links to any pictures in the
photo gallery.
This combines the Geologic map with the feature markers in the context
of Google Earth, which can be obtained as a free download. The
geologic map appears as a transparent overlay, making it easy to
determine the rock unit that geologists have mapped at any given
location. The feature markers will contain information and links
as described under "Google Maps." Also, double clicking on a
marker's name on the list to the left of the satellite view will zoom
in on the marker at a particular angle of view.