Magnetotelluric Data, San Luis Valley, ColoradoEntry ID: USGS_OFR_2007_1405
Abstract: The San Luis Valley region population is growing. Water shortfalls could have serious consequences. Future growth and land management in the region depend on accurate assessment and protection of the region's ground-water resources. An important issue in managing the ground-water resources is a better understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary ... deposits that fill the Rio Grande rift, which contain the principal ground-water aquifers. The shallow unconfined aquifer and the deeper confined Santa Fe Group aquifer in the San Luis Basin are the main sources of municipal water for the region.
The U.S. Geological Survey (USGS) is conducting a series of multidisciplinary studies of the San Luis Basin located in southern Colorado. Detailed geologic mapping, high-resolution airborne magnetic surveys, gravity surveys, an electromagnetic survey (called magnetotellurics, or MT), and hydrologic and lithologic data are being used to better understand the aquifers. The MT survey primary goal is to map changes in electrical resistively with depth that are related to differences in rock types. These various rock types help control the properties of aquifers. This report does not include any data interpretation. Its purpose is to release the MT data acquired at 24 stations. Two of the stations were collected near Santa Fe, New Mexico, near deep wildcat wells. Well logs from those wells will help tie future interpretations of this data with geologic units from the Santa Fe Group sediments to Precambrian basement.
[Summary provided by the USGS.]
Data Set Citation
Dataset Originator/Creator: Rodriguez, B.D. and Williams, J.M.
Dataset Title: Magnetotelluric Data, San Luis Valley, Colorado
Dataset Series Name: Open File Report
Dataset Release Date: 2008
Dataset Publisher: U.S. Geological Survey
Issue Identification: 2007-1405Online Resource: http://pubs.usgs.gov/of/2007/1405/
TERRESTRIAL HYDROSPHERE > GROUND WATER > AQUIFERS
SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > CRUSTAL MOTION
SOLID EARTH > GEOMAGNETISM
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > BEDROCK LITHOLOGY
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTARY ROCKS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTS
ISO Topic Category
Role: TECHNICAL CONTACT
Email: ask at usgs.gov
Denver Federal Center
Province or State: CO
Postal Code: 80225
Rodriguez, B.D. and Williams, J.M., 2008, Magnetotelluric data, San Luis Valley, Colorado: U.S. Geological Survey Open-File Report 2007-1405, 227 p.
Creation and Review Dates
DIF Creation Date: 2008-01-22
Last DIF Revision Date: 2008-04-25