Geospatial Dataset for the Geologic Framework and Hydrostratigraphy of the Edwards and Trinity Aquifers Within Northern Medina County, Texas at 1:24,000
Dates
Publication Date
2024-09-13
Time Period
2024
Citation
Lamberts, A.P., Clark, A.K., and Morris, R.R., 2024, Geospatial dataset for the geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Medina County, Texas at 1:24,000: U.S. Geological Survey data release, https://doi.org/10.5066/P9G6G8GT.
Summary
The karstic Edwards and Trinity aquifers are classified as major sources of water in south-central Texas by the Texas Water Development Board, and both are classified as major aquifers by the State of Texas. The Edwards and Trinity aquifers developed because of the original depositional history of the carbonate limestone and dolomite rocks that contain them, and the primary and secondary porosity, diagenesis, fracturing, and faulting that modified the porosity, permeability, and transmissivity of each aquifer and of the geologic units separating the aquifers. Previous studies such as those by the U.S. Geological Survey (USGS) and the Edwards Aquifer Authority (EAA) have mapped the geology, hydrostratigraphy, and structure in these [...]
Summary
The karstic Edwards and Trinity aquifers are classified as major sources of water in south-central Texas by the Texas Water Development Board, and both are classified as major aquifers by the State of Texas. The Edwards and Trinity aquifers developed because of the original depositional history of the carbonate limestone and dolomite rocks that contain them, and the primary and secondary porosity, diagenesis, fracturing, and faulting that modified the porosity, permeability, and transmissivity of each aquifer and of the geologic units separating the aquifers. Previous studies such as those by the U.S. Geological Survey (USGS) and the Edwards Aquifer Authority (EAA) have mapped the geology, hydrostratigraphy, and structure in these areas at various scales. The purpose of this data release is to present the data that were collected and compiled to describe the geologic framework and hydrostratigraphy of northern Medina county, Texas in order to help water managers, water purveyors, and local residents better understand and manage water resources. The scope of the larger work and this accompanying data release is focused on the geologic framework and hydrostratigraphy of the outcrops and hydrostratigraphy of the rocks that contain the Edwards and Trinity aquifers within northern Medina county, Texas. These digital data accompany Clark and others (2024), which supersedes Scientific Investigations Map 3461.
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Medina_Metadata.xml “Metadata” Original FGDC Metadata
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Medina_GIS.zip “GIS Data”
18.87 MB
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Related External Resources
Type: Related Primary Publication
Clark, A.K., Morris, R.R., and Lamberts, A.P., 2024, Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Medina County, Texas: Scientific Investigations Map, https://doi.org/10.3133/sim3526.
These digital data represent the geographical extent of the surficial hydrostratigraphic units and faulting in northern Medina county in south-central Texas. With a rapidly increasing population placing an increasing demand on water resources, the updated mapped hydrostratigraphic units are intended to aid in identifying units that likely facilitate groundwater recharge or discharge or function as a confining layer. These digital data accompany Clark and others (2024).
Rights
This work is marked with Creative Commons Zero v1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/).
