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    AUTHOR: Bruehl, D. H.
 MONO AUTH: Farquhar, O. C.
     TITLE: Use of geophysics in groundwater exploration in Massachusetts
MONO TITLE: Geotechnology in Massachusetts
AUTH AFFIL: Metcalf & Eddy; Boston, MA; United States
            Univ. Mass., Dep. Geol.; Amherst, MA; United States
 CONF INFO:  Geotechnology in Massachusetts, Boston, MA, United States,
            March 20-21, 1980
 PUBLISHER: Univ. Mass., Grad. Sch., Amherst, MA, United States
    SOURCE: p.87-90
REFERENCES: 2
      YEAR: 1982
  LANGUAGE: English
  PUB TYPE: Conference Publication, Book, Analytic
    FORMAT: illus., geol. sketch maps
  ABSTRACT: In general, coarse-grained stratified glacial drift deposits
            make up the most productive aquifers in Massachusetts. The use
            of the gravity method in combination with electrical resistivity
            depth soundings on a project in Manchester, Massachusetts, is
            demonstrated. Investigations on sites in Cedar Swamp and
            adjacent to Round Pond are described. On the Cedar Swamp site
            the gravity method outlined a buried bedrock valley system with
            a computed thickness of overburden of up to 90 feet. Electrical
            resistivity depth soundings were used to locate test well sites
            on this anomaly. The gravity method was also used to detect and
            map a buried bedrock valley system on the Round Pond site. A
            maximum overburden thickness of 83 feet was computed for this
            site. Electrical resistivity depth soundings were then used to
            locate test well sites. Small-diameter test wells confirmed the
            presence of thick sand and gravel deposits under as much as 20
            feet of swampy muck.--Modified book abstract.
      ISBN: 0-960-4712-00
MAJOR DESC: Massachusetts; ground water
DESCRIPTOR: hydrogeology; surveys; geophysical surveys; electrical surveys;
            New England; Eastern U.S.; United States; exploration; drift;
            clastic sediments; aquifers; resistivity; Manchester; water
            wells; Bouguer anomalies; gravity anomalies; Cedar Swamp region;
            Round Pond