A direct-current resistivity survey near Mineral Hot Springs, San Luis Valley, Colorado

Zohdy, Adel A.R.; Bisdorf, Robert J.

doi:10.3133/ofr93282

Cited by 3 publications

(16 citation statements)

References 3 publications

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“…water present within the aquifer. Some researchers have used resistivity contrasts as a means of characterizing probable lithology, salinity and water quality and this approach would be used in this study [20,21].…”

Section: Resultsmentioning

confidence: 99%

“…The resistivity at depths of 5 m, ranged between 3.8 -6.1 Ωm in the northwestern part of the study area close to the Forcados River. In literature, saltwater resistivity values below 1.0 Ωm have been reported, in fact, sea water has an average resistivity of 0.2 Ωm [21], while the resistivity of a layer saturated by saline/salty brackish water and dissolved solids is in the range of 8.0 to 50.0 Ωm [20,21,25]. Therefore, based on these resistivity values, the results of this study emphasized the existence of strata inundated with brackish to saline water in about 10 % of the aquifer.…”

Section: Resultsmentioning

confidence: 99%

“…Analysis of twenty (20) sounding data in the study area has revealed three lithological units: sand, clayey sand and clay. Groundwater present in the shallow aquifer was generally poor in quality.…”

Section: Resultsmentioning

confidence: 99%

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A Preliminary Study of Groundwater Conditions in a Transitional Environment of Niger Delta using Direct – Current Soundings

Aweto

2020

J. Sci. Res.

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The study area Burutu lies within the transitional environment of the Niger delta. The area is sectioned by a compact network of rivers and creeks, which maintain a fragile but dynamic balance between saline, estuarine and freshwater surface bodies. Twenty direct current resistivity soundings were carried out to provide adequate information on the spatial lithological variation and groundwater conditions in Burutu. Resistivity contrasts and water analysis were used as a means of characterizing probable lithology and water type present within the pore spaces of aquiferous units. The results revealed spatial development of the aquifer architectural facies that follows a trend of mostly sand with little clay in the south to sand with abundant of clayey facies in the north near the Forcados River. The groundwater conditions indicated that salty/brackish water constituting about 4 % of water present was confined to the bank of the Forcados River and extend laterally landwards to about 120 m. Further away from the river bank, the water was mostly poor to good quality freshwater. The depth to the freshwater constituting about 96 % groundwater present varied from about 49.0 – 63.3 m near the Forcados River and became as shallow as 1.6 m in inland areas.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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A Preliminary Study of Groundwater Conditions in a Transitional Environment of Niger Delta using Direct – Current Soundings

Aweto

2020

J. Sci. Res.

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“…Other data releases in this multimedia study include analyses of rabbitbrush samples (Erdman and VanTrump, 1993) and results of a resistivity survey near Mineral Hot Springs (Zohdy and Bisdorf, 1993).…”

Section: Introductionmentioning

confidence: 99%

Concentrations of N2, O2, CO2, and He in soil gases collected in the northern San Luis Valley, Colorado

Hinkle¹

1993

Open-File Report

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“…Table 1. Concentrations of elements in spring waters (averaged) (Barrett and Pearl, 1976) (Zohdy and Bisdorf, 1993). Shaded area is a zone of low resistivity.............35 Figure 10.…”

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confidence: 99%

Geochemical and biogeochemical surveys near the Mineral and Valley View Hot Springs Known Geothermal Resource Areas, northern San Luis Valley, Colorado

Hinkle¹,

Erdman²

1995

Open-File Report

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The Mineral Hot Springs and Valley View Hot Springs Known Geothermal Resurce Areas are located in the northern part of the San Luis Valley, Colo-ado. To seek evidence for possible extensions of these hot spring systems, the U.S. Geological Survey conducted surveys of the northern San Luis Valley utilizing surficial geochendcal and biogeochendcal exploration techniques. The objective of the study was to see if analyses of surficial soil samples, soil gases, and rabbitbrush (genus Chrysathamnus) could detect extensions of the hot springs.Many of the geochendcal and biogeochendcal anomalies were observed to be associated with the large fault systems of the valley. Soil and soil-gas data suggested six causes for the various geochendcal anomalies: (1) epithermal sulfide mineralization in carbonate bedrock, (2) fossil and possible present-day geothermal activity with accompanying hot-spring deposition, (3) acid alteration along faults containing sulfide mineralization, (4) Mo and Cu sulfide mineralization, probably related to the Rito Alto stock, (5) Ag and Hg in hot-spring sinter deposits, and (6) migration of He through permeable faults. The surveys did not detect any extensions of the Valley View Hot Springs KGRA. However, some of the anomalies on the west side of the valley could be indirectly related to Mineral Hot Springs KGRA.Most of the element-concentration anomalies in soil samples collected south of the town of Villa Grove are probably due to metals carried by Kerb^r Creek from old mines of the Bonanza mining district.Anomalous concentrations of Li, B, and Mn in rabbitbrush combined with high soil-Hg concentrations and anomalous OX^ concentrations in soil gases collected nearby suggest a geothermal heat source beneath the low hills of Precambrian granites just west of Mineral Hot Springs. The areal coincidence of surficial anomalies with concealed subsurface faults detected by a resistivity survey indicated the utility of surficial geochendcal-biogeochendcal surveys a significant result of the investigation.

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A direct-current resistivity survey near Mineral Hot Springs, San Luis Valley, Colorado

Cited by 3 publications

References 3 publications

A Preliminary Study of Groundwater Conditions in a Transitional Environment of Niger Delta using Direct – Current Soundings

A Preliminary Study of Groundwater Conditions in a Transitional Environment of Niger Delta using Direct – Current Soundings

Concentrations of N<sub>2</sub>, O<sub>2</sub>, CO<sub>2</sub>, and He in soil gases collected in the northern San Luis Valley, Colorado

Geochemical and biogeochemical surveys near the Mineral and Valley View Hot Springs Known Geothermal Resource Areas, northern San Luis Valley, Colorado

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