Earth-fissure movements associated with fluctuations in ground-water levels near the Picacho Mountains, south-central Arizona, 1980-84
Open-File Report
90-561
By: Michael C. Carpenter
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Abstract
The Picacho earth fissure transects subsiding alluvial sediments near the east periphery of the Picacho basin in south-central Arizona. The basin has undergone land subsidence of as much as 3.8 meters since the 1930's owing to compaction of the aquifer system in response to ground-water-level declines that have exceeded 100 meters. The fissure, which extends generally north-south for 15 kilometers, exhibits horizontal tensile failure and as much as 0.6 meter of normal dip-slip movement at the land surface. The west side of the fissure is downthrown. The fissure was observed as early as 1927 and is the longest earth fissure in Arizona.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Earth-fissure movements associated with fluctuations in ground-water levels near the Picacho Mountains, south-central Arizona, 1980-84 |
| Series title | Open-File Report |
| Series number | 90-561 |
| DOI | 10.3133/ofr90561 |
| Year Published | 1991 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | vi, 64 p. |
| Country | United States |
| State | Arizona |
| Other Geospatial | Picacho Mountains |