Description:
One map, covering the entire Tucson 1 x 2 degree quadrangle at
1:250,000 scale, was prepared as part of a project to test the
utility of Landsat-l (ERTS-l) multispectral images to produce
maps for practical geoscience applications. They were prepared by
inspecting and interpreting many Landsat-l images (bands 5, 6,
and 7), from different orbital passes and times of year, of the
same scenes. Map-unit boundaries were drawn on 1:250,000-scale
enlargement prints of Landsat-l images, on the basis of the
clearest evidence of the boundaries from various images. This
interpretation utilized information avai12Jle from geologic and
soil maps and my own limited field observations as purely
secondary input; i.e., the Landsat-image enlargements were used
only for plotting information that could be identified from
Landsat images. Consequently, the accuracy of this map is
constrained by the relatively poor ground resolution and
stereovision capability of the Landsat-l images; probably it is
adequate for 1:500,000 scale.
Tucson 1o x 2o Quadrangle; ease of excavation and potential erodibility--phases 4 and 5.
Scale 1:250,000