Geologic mapping

By Northeast Region January 2026 (approx.)

$Geologist examines water bearing fractures.$

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Detailed Description

U.S. Geological Survey Geologist, Mercer Parker, examines water bearing fractures in gneiss rock while conducting geologic mapping in Amherst, NH.

Winter 2026 Photo Contest Winner: Greg Walsh, USGS at Work

Sources/Usage

Public Domain.

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