4.2.3. Stone and Arrowsmith
As part of our efforts to find a suitable paleoseismic site along the
Cholame segment in the late 1990s, we (Stone, Arrowsmith, and other
colleagues) mapped about 17 km of the fault zone (Stone et al., 1998;
Stone, 1999; Fig. 7). This mapping included stereographic inspection
of aerial photography from 1930 and field inspection and compilation
on 1:10,000 printouts of the airphotos. We strictly limited the
delineation of the active faults to those which showed evidence of
recent motion by meter-sale topographic discontinuities. No features
were mapped which were not identifiable in the field. Some
alignments of features did not have clear indicators of sense of slip,
but were most probably faults, so they were mapped as lineaments.
This strictness results in fewer mapped features (Fig. 7) than Vedder
and Wallace (1970) or Zielke (see below). We also mapped recently
active landslides. The fault traces and landslide scarps and deposits
were compiled and mapped onto aerial photographs rectified to the
USGS DRGs (Stone,1999). Arrowsmith (this study) re-rectified and redigitized
the relevant mapping for this study. Location accuracy for the
Stone and Arrowsmith mapping is a few tens of meters.