Pleasanton Fault

The Pleasanton Fault is a seismically active geological structure in Alameda County and Contra Costa County, California, US.[1] The existence of the fault is disputed as geotechnical reports have found no evidence for its existence.[2]

## Relation to hydrological features

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All the streams draining Livermore Valley merge above the Bernal Subbasin and then leave the subbasin and the valley as the Arroyo de la Laguna. Groundwater occurs throughout the valley floor portion of the Bernal Subbasin under conditions ranging from unconfined to confined. There is no inflow of groundwater across the Pleasanton Fault south of the City of Pleasanton. This consequence arises because any movement of groundwater in the southern section is essentially parallel to the Pleasanton Fault.[3]

## See also

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* Mocho Subbasin
* Tesla Fault

## References

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1. ^ "Seismic Safety Element of the Alameda County General Plan" (Archived OCR of original). Alameda County. 1982. Archived from the original on 2012-12-11. Retrieved 2018-02-24.
2. ^ Berlogar, Stevens, and Associates. (March 27, 2013). "Fault Ground-Rupture Investigation Proposed Dublin Crossing Mixed Use Development, Camp Parks Reserve Forces Training Area, Dublin CA". City of Dublin, California. Retrieved 2021-07-25. "Based on the findings from the above fault investigations, there is no substantiated evidence for the existence of the inferred Pleasanton Fault traces shown on the current A-P Earthquake Fault Zone Map"`{{cite web}}`: CS1 maint: multiple names: authors list (link)
3. ^ Earth Metrics Incorporated, ‘'Environmental Site Assessment for the Hopyard Village Shopping Center, Pleasanton, California'‘, May 24, 1989

## External links

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* Bulletin of the Seismological Society of America; December 1971; v. 61; no. 6; p. 1795-1799; 1971 Seismological Society of America, NATIONAL CENTER FOR EARTHQUAKE RESEARCH U. S. GEOLOGICAL SURVEY, MENLO PARK, CALIFORNIA

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Seismically active fault zones and tectonic blocks of California

Statewide Faults|

* San Andreas Fault
* Salinian Block

Southern California|

* Brawley Seismic Zone
* Chino Fault
* Elsinore Fault Zone
* Elysian Park Fault
* Garlock Fault
* Hollywood fault
* Hosgri Fault
* Imperial Fault Zone
* Laguna Salada Fault
* Newport–Inglewood Fault
* Northridge Blind Thrust Fault
* Peninsular Ranges
* Puente Hills Fault
* Raymond Fault
* Rose Canyon Fault
* Salton Trough
* San Cayetano Fault
* San Diego Trough Fault Zone
* San Felipe Fault Zone
* San Gabriel Fault
* San Jacinto Fault Zone
* Santa Maria River Fault
* Santa Ynez Fault
* Shoreline Fault
* Sierra Madre Fault Zone
* Ventura Fault
* White Wolf Fault
* Whittier Fault
* Yorba Linda Fault

Northern California|

* Bartlett Springs Fault
* Calaveras Fault
* Clayton-Marsh Creek-Greenville Fault
* Concord Fault
* Hayward Fault Zone
* Healdsburg Fault
* Maacama Fault
* Mendocino fracture zone
* Mendocino triple junction
* Mount Diablo Thrust Fault
* Monta Vista Fault
* Nacimiento Fault
* Pleasanton Fault
* Rinconada Fault
* San Gregorio Fault
* San Pablo Fault
* Seal Cove Fault
* Serra Fault
* Silver Creek Fault
* Tesla Fault
* West Napa Fault

Sierra Nevada|

* Death Valley Fault Zone
* Furnace Creek Fault Zone
* Honey Lake Fault Zone
* Kern Canyon Fault
* Maria fold and thrust belt
* Owens Valley Fault
* Rescue Lineament-Bear Mountains fault zone
* Sierra Nevada Batholith
* Sierra Nevada Fault
* Sierra Nevada–Great Valley Block
* Smartville Block
* Walker Lane

* Category
* California Geological Survey
* Seismic Hazards Mapping Act
* Mexico (list)

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