Fracture control of regional ground-water flow in a carbonate aquifer in a semi-arid region.

Citation

Material Information

Title:
Fracture control of regional ground-water flow in a carbonate aquifer in a semi-arid region.
Series Title:
Geological Society of America Bulletin
Creator:
Mayer, James R.
Sharp Jr., John M.
Publisher:
Geological Society of America
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Carbonate Rocks ( local )
Fractures ( local )
Hudspeth County Texas ( local )
Faults ( local )
Ground Water ( local )
New Mexico ( local )
Otero County New Mexico ( local )
Texas ( local )
Remote Sensing ( local )
West Texas ( local )
United States ( local )
Sedimentary Rocks ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
We integrate fracture mapping and numerical modeling to assess the role of fractures in regional round-water flow. Although the importance of fractures in ground-water flow and solute transport is accepted generally, few studies have addressed quantitatively the regional hydrogeological implications of fractures. The field-study area in west Texas and southeastern New Mexico consists primarily of subhorizontal Permian carbonate rocks cut by extensional faults and fractures. Air-photo analysis and field mapping reveal a broad fracture zone extending from the Sacramento Mountains of New Mexico to the Salt Basin near Dell City, Texas. Most fractures are subparallel to major normal faults. The most intense fracturing coincides with a prominent trough in the potentiometric surface and an apparent “plume” of relatively fresh ground water. Flow models, corroborated by geochemical data, indicate that fracturing has created a high-permeability zone that funnels recharge from the Sacramento Mountains at least 80 km southeastward to its discharge zone.
Original Version:
Geological Society of America Bulletin, Vol. 110, no. 2 (1998-02-01).

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University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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