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Fractures form complex paths for fluid movement in fractured-rock aquifers.

Mapping rock types and fractures, where the rock is exposed, enables scientists to link

  • fracture orientation
  • interconnectivity of fractures, and
  • fracture length with the availability of water.

Bedrock Regional Aquifer Systematics Study

The Bedrock Regional Aquifer Systematics Study (BRASS) Project is within the Eastern Earth Surfaces Processes Team and is engaged in cooperative research efforts with hydrologists from the USGS and elsewhere to better understand ground water flow, availability, and quality in regions underlain by bedrock (fractured-rock aquifers).

The primary objective of BRASS is to determine bedrock geologic controls on the behavior of ground water in various geologic settings, partly in order to demonstrate how bedrock geologic mapping can be useful for solving problems related to ground water.

The cooperative hydrogeologic projects utilize a wide range of analytical approaches including--

  • mapping
  • aquifer tests
  • borehole and surface geophysics
  • structural analysis of brittle and ductile features
  • environmental-tracer age dating

The BRASS project is supported by

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U.S. Department of the Interior, U.S. Geological Survey, Reston, VA USA
Maintained by: Boris Barrios
Contact: Bill Burton
Last modification: 27-Aug-2004
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