Aeromagnetic interpretations for understanding the hydrogeologic framework of the southern Espanola Basin, New Mexico

Grauch, V.J.S.; Bankey, Viki

doi:10.3133/ofr03124

Cited by 15 publications

(35 citation statements)

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“…In anticipation of future ground-water studies to the north, the New Mexico Office of the State Engineer augmented funding to extend the high-resolution aeromagnetic coverage into the southern Española Basin in 1998 (U.S. Geological Survey and others, 1999). Subsequent interpretations of these data provided useful new information on the depth and lateral extent of Precambrian basement rocks, buried intrusive and volcanic rocks, and shallow faults (Grauch and Bankey, 2003;. This knowledge improved the understanding of aquifer thickness and depths to potential aquifers, and it allowed better prediction of groundwater storage, flow, and quality and better informed choices of drilling sites.…”

Section: Introductionmentioning

confidence: 95%

“…Interpretation derived from Grauch and Bankey (2003), who inspected magnetic anomaly patterns in comparison with mapped vents and used magnetic depth estimation techniques on profile data to indicate areas of thick magnetic sources.…”

Section: Region Of Thick Volcanic Rocks and Numerous Ventsmentioning

confidence: 99%

“…Areas of thin basalt Interpretation derived from Grauch and Bankey (2003), who used magnetic depth estimation techniques to indicate areas underlain by thin magnetic sources.…”

Section: Region Of Thick Volcanic Rocks and Numerous Ventsmentioning

confidence: 99%

“…In addition to the new aeromagnetic coverage, recent new work by others in the basin has provided motivation to update and expand the scope of the earlier aeromagnetic interpretations of Grauch and Bankey (2003) and . A major objective has been construction of a digital surface representing the base of Santa Fe Group sedimentsthe base of the basin aquifer system.…”

Section: Introductionmentioning

confidence: 99%

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Geophysical Interpretations of the Southern Espanola Basin, New Mexico, That Contribute to Understanding Its Hydrogeologic Framework

Grauch¹,

Phillips²,

Koning³

et al. 2009

Professional Paper

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Section: Introductionmentioning

confidence: 95%

Section: Region Of Thick Volcanic Rocks and Numerous Ventsmentioning

confidence: 99%

“…Areas of thin basalt Interpretation derived from Grauch and Bankey (2003), who used magnetic depth estimation techniques to indicate areas underlain by thin magnetic sources.…”

Section: Region Of Thick Volcanic Rocks and Numerous Ventsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Geophysical Interpretations of the Southern Espanola Basin, New Mexico, That Contribute to Understanding Its Hydrogeologic Framework

Grauch¹,

Phillips²,

Koning³

et al. 2009

Professional Paper

Self Cite

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“…In addition, paleochannels and/or paleovalleys hidden in the subsurface also support an inherited preferential groundwater flow and recharge [9] [12] [13]. The basis for the present hydrogeophysical survey is understanding the geological setting of the area, nature of stratigraphy and tectonism so as to have a better understanding of the prevailing hydrogeological conditions; thus delineating a buried framework suitable for groundwater flow and storage [7] [9] [14]. Processing of the gravity and aeromagnetic data sets by 3D Euler deconvolution, shaded relief, derivatives and analytic signal techniques further map/locate the important structures.…”

Section: R T Ranganai Et Al Journal Of Water Resource and Protectionmentioning

confidence: 99%

Geophysical and Hydrogeological Groundwater Prospectivity Mapping in the Kraaipan Granite-Greenstone Terrain, Southeast Botswana

Ranganai¹,

Moidaki²,

King³

et al. 2017

JWARP

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Application of regional geophysical methods for hydrogeological purposes has increased over the last two decades especially in arid and semi-arid areas. A project to map the Kraaipan granite-greenstone terrain in southeast Botswana has recently been undertaken using regional aeromagnetic and gravity data with the aim to map the rocks at depth to understand the geology while the secondary objective was to subsequently assess the mineralization and groundwater potential in the area. An integrated analysis of the aeromagnetic and gravity data and their derived/processed products is hereby investigated for groundwater for drinking and agricultural purposes. The studies include: subsurface characterisation and delineation of structural framework suitable for groundwater exploration and determination of petrophysical relationships used to link the geophysical properties (e.g., density) to hydrological properties (e.g., porosity). The results of interpretation indicate that the rocks are under ~50 m of Kalahari cover and the study area is composed of three aquifers: the extensive hard rock aquifer (granitic and volcanic), the important (fractured) karst aquifer and the minor sedimentary aquifer. The area is dissected by an ENE-to-EW-trending dyke swarm visible on the regional aeromagnetic data and much clearer on high resolution aeromagnetic data. Minor fault and/or dyke elements of NW-SE and NE-SW trend are observed. Spectral analysis reveals three main average ensample interfaces at depths of 0.7 km, 1.99 km and 4.8 km. The linear Euler solutions maps reveal that the majority depths to top of magnetic bodies range from 40 m to 400 m throughout the survey area. The shallowest depths are the most significant one in this case as they probably relate to depth of bedrock and thickness of regolith or thickest sediments. For 2695 existing boreholes analysed, maximum borehole depth is 482 m (mean 108 m), and almost half (1263) /hr) and an average water strike of 64 m. There is very little correlation between interpreted hydrogeological features and the existing borehole locations. The study shows the importance of preliminary geophysical investigations before ground borehole siting and drilling in order to improve borehole success rates and/or reduce costs inherent in groundwater projects.

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A geophysical investigation of subsurface structures and Quaternary geology at San Marcos Pueblo, New Mexico

Hinz

Ferguson

Pellerin³

et al. 2008

Archaeological Prospection

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San Marcos Pueblo site (LA 98), locatedin the Galisteo Basin south of Santa Fe,New Mexico, encompasses the remains of 43 identified room blocks, a Spanish mission and 20 middens. As part of ongoing fieldinvestigations at San Marcos, students and faculty from the Summerof Applied Geophysical Experience (SAGE) field programme are using multiple geophysical techniques to noninvasively investigate the site. Modelling of the underlying Quaternary stream terrace geology and the detection of subsurface Pueblo-era features were accomplished through the integrated interpretation of data from seismic refraction and reflection, electromagnetic, magnetic and ground-penetrating radar methods. Although to date only a targeted spatially small extent of the site has been explored using these methods, the SAGE field programme has been able detect a variety ofanthropogenic structures and debris. The SAGE field programme validated the presence of excavations in the natural stream terrace sequence over areas believed to contain kivas, mapped the geometry of walls over a closed room block, and detected an area of magnetized debris associated with smelting operations. Collectively, the data from the SAGE field programme demonstrate the value of using multiple, complementary, geophysical methods for archaeological prospection.

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Aeromagnetic interpretations for understanding the hydrogeologic framework of the southern Espanola Basin, New Mexico

Cited by 15 publications

References 0 publications

Geophysical Interpretations of the Southern Espanola Basin, New Mexico, That Contribute to Understanding Its Hydrogeologic Framework

Geophysical Interpretations of the Southern Espanola Basin, New Mexico, That Contribute to Understanding Its Hydrogeologic Framework

Geophysical and Hydrogeological Groundwater Prospectivity Mapping in the Kraaipan Granite-Greenstone Terrain, Southeast Botswana

A geophysical investigation of subsurface structures and Quaternary geology at San Marcos Pueblo, New Mexico

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