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Use of advanced borehole geophysical techniques to delineate fractured-rock ground-water flow and fractures along water-tunnel facilities in northern Queens County, New York

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Stumm, Frederick, Chu, Anthony, Lange, A.D., Paillet, F.L., Lane, J.H., Jr., 2001, Use of advanced borehole geophysical techniques to delineate fractured-rock ground-water flow and fractures along water-tunnel facilities in northern Queens County, New York: U.S. Geological Survey Water-Resources Investigations Report 2000–4276, 12 p., https://pubs.er.usgs.gov/publication/wri004276.

Summary

Advanced borehole geophysical methods were used to assess the geohydrology of crystalline bedrock along the course of a new water tunnel for New York City. The logging methods include natural gamma, spontaneous potential, single-point resistance, mechanical and acoustic caliper, focused electromagnetic induction, electromagnetic resistivity, magnetic susceptibility, borehole-fluid temperature and conductance, differential temperature, heat-pulse flowmeter, acoustic televiewer, borehole deviation, optical televiewer, and borehole radar. Integrated interpretation of the geophysical logs from an 825-foot borehole (1) provided information on the extent, orientation, and structure (foliation and fractures) within the entire borehole, including [...]

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Type Scheme Key
local-index unknown wri004276
local-pk unknown 33049
series unknown Water-Resources Investigations Report

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journalWater-Resources Investigations Report
parts
typePublication Place
valueReston, VA
languageEnglish
tableOfContents<ul><li>Abstract</li><li>Introduction</li><li>Geology</li><li>Hydrology</li><li>Summary</li><li>Selected references</li></ul>
citationTypeReport

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