Geology and quicksilver deposits of the New Almaden district, Santa Clara County, California

Bailey, E. B.; Everhart, Donald L.

doi:10.3133/pp360

Cited by 37 publications

(109 citation statements)

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“…In the foothills east of Los Gatos, coseismic offset along a strand of the Berrocal fault mapped by Bailey and Everhart (1964) and McLaughlin and others (1991) Damage at the Village Square shopping center coincided remarkably with a short isolated segment of faulted Quaternary alluvium mapped by Bailey and Everhart (1964). This fault segment lies along a branch of the Shannon fault that is largely concealed by alluvium (Bailey and Everhart, 1964;McLaughlin and others, 1991).…”

Section: Losgatoszonementioning

confidence: 99%

“…Concentrated damage within the Los Gatos zone, including all documented sites of postearthquake deformation, lies northeast of the mountain-front fault, on and between inferred and explicit traces of the Berrocal fault mapped by Bailey and Everhart (1964) and McLaughlin and others (1991) .…”

Section: Losgatoszonementioning

confidence: 99%

“…The Berrocal fault passes through the Los Gatos area as several subparallel strands that in detail show considerable complexity, including reverse faults that reveal northeastsouthwest shortening and related fault-parallel folds (Bailey and Everhart, 1964;McLaughlin, 1974;Sorg and McLaughlin, 1975;McLaughlin and others, 1991). The fault strands typically strike about N50W.…”

Section: Losgatoszonementioning

confidence: 99%

“…This fault segment lies along a branch of the Shannon fault that is largely concealed by alluvium (Bailey and Everhart, 1964;McLaughlin and others, 1991). 2).…”

Section: Losgatoszonementioning

confidence: 99%

See 3 more Smart Citations

Breaks in Pavement and Pipes as Indicators of Range-Front Faulting Resulting from the 1989 Loma Prieta Earthquake near the Southwest Margin of the Santa Clara Valley, California

Schmidt¹,

Ellen²,

Haugerud³

et al. 1995

Open-File Report

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Section: Losgatoszonementioning

confidence: 99%

Section: Losgatoszonementioning

confidence: 99%

Section: Losgatoszonementioning

confidence: 99%

“…This fault segment lies along a branch of the Shannon fault that is largely concealed by alluvium (Bailey and Everhart, 1964;McLaughlin and others, 1991). 2).…”

Section: Losgatoszonementioning

confidence: 99%

See 2 more Smart Citations

Breaks in Pavement and Pipes as Indicators of Range-Front Faulting Resulting from the 1989 Loma Prieta Earthquake near the Southwest Margin of the Santa Clara Valley, California

Schmidt¹,

Ellen²,

Haugerud³

et al. 1995

Open-File Report

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“…Many of the mercury mines both in the area studied and else- where are in silica-carbonate rock, which is an alteration product of serpentinite (Bailey and Everhart, 1964) in the Coastal geochemical province. Many of the mercury mines discharge bicarbonate-rich solutions that are shown (Barnes and others, 1973) to alter serpentinite to silica-carbonate rock.…”

Section: Introductionmentioning

confidence: 99%

Chemical composition of naturally occurring fluids in relation to mercury deposits in part of north-central California

Barnes¹,

Hinkle²,

Rapp³

et al. 1973

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Evaluation of mercury cycling and hypolimnetic oxygenation in mercury-impacted seasonally stratified reservoirs in the Guadalupe River watershed, California

McCord¹,

Beutel

Dent

et al. 2016

Water Resour. Res.

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Surface water reservoirs trap inorganic mercury delivered from their watersheds, create conditions that convert inorganic mercury to highly toxic methylmercury (MeHg), and host sportfish in which MeHg bioaccumulates. The Santa Clara Valley Water District (District) actively manages and monitors four mercury‐impaired reservoirs that help to serve communities in South San Francisco Bay, California. The Guadalupe River watershed, which contains three of those reservoirs, also includes the New Almaden mercury‐mining district, the largest historic mercury producer in North America. Monthly vertical profiles of field measurements and grab samples in years 2011–2013 portray annual cycling of density stratification, dissolved oxygen (DO), and MeHg. Monitoring results highlight the role that hypolimnetic hypoxia plays in MeHg distribution in the water column, as well as the consistent, tight coupling between MeHg in ecological compartments (water, zooplankton, and bass) across the four reservoirs. Following the 2011–2013 monitoring period, the District designed and installed hypolimnetic oxygenation systems (HOS) in the four reservoirs in an effort to repress MeHg buildup in bottom waters and attain regulatory targets for MeHg in water and fish tissue. Initial HOS operation in Calero Reservoir in 2014 enhanced bottom water DO and depressed hypolimnetic buildup of MeHg, but did not substantially decrease mercury levels in zooplankton or small fish.

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Geology and quicksilver deposits of the New Almaden district, Santa Clara County, California

Cited by 37 publications

References 0 publications

Breaks in Pavement and Pipes as Indicators of Range-Front Faulting Resulting from the 1989 Loma Prieta Earthquake near the Southwest Margin of the Santa Clara Valley, California

Breaks in Pavement and Pipes as Indicators of Range-Front Faulting Resulting from the 1989 Loma Prieta Earthquake near the Southwest Margin of the Santa Clara Valley, California

Chemical composition of naturally occurring fluids in relation to mercury deposits in part of north-central California

Evaluation of mercury cycling and hypolimnetic oxygenation in mercury-impacted seasonally stratified reservoirs in the Guadalupe River watershed, California

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