Investigation for South Fill Area, United States Military Academy, West Point, New York Page: 14 of 262
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PART II: DESCRIPTION OF SITE
15. The South Fill area is within the alluvial plain of the Hudson
River. At West Point, the river occupies a narrow gorge cut through
granite and gneiss. The sides of the gorge rise about 200 ft above the
alluvial plain. Glaciation has modified the bedrock, plastered it lo-
cally with glacial detritus, and otherwise affected the hills overlooking
the river where the principal Military Academy buildings are located.
Figure 1 shows the general plan and geology of the West Point area. The
local and regional geologies are presented in WES Technical Report No.
North Dock Slide Area
16. During construction of a major housing project on the Military
Academy grounds in 1960, it was decided to use the excavated material as
landfill for athletic fields along the tidal flats in the North Dock
area (Figure 1). In June 1960, the fill material, consisting of rock,
boulders, and soil excavated for the housing construction area, was
hauled in by truck. About 313,000 cu yd of fill were placed shortly
before the slide occurred on 25 August 1961. During the fill operation,
mud waves, several minor slides, and abrupt settlements occurred, some
of which were of major consequence. One severe subsidence caused suspen-
sion of work for a week. The North Dock failure resulted in property
damage because of wave action and underwater slides, but no loss of life
South Fill Area
17. Some fill had been placed in the South Fill area in 1941.
Additional fill, amounting to 210,000 cu yd, was placed in 1960, the
material being of the same type and origin as that used for the North
Dock area. The dumped rock fill at the South Fill area accounts for
approximately the top 20 to 40 ft in the soil profile.
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Taylor, Hugh M., Jr.; Poplin, Jack K. & Mitchell, Gerald B. Investigation for South Fill Area, United States Military Academy, West Point, New York, report, August 1980; Vicksburg, Mississippi. (https://digital.library.unt.edu/ark:/67531/metadc303971/m1/14/: accessed June 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.