Data from Stratigraphic Test Holes Drilled at the U.S. Marine Corps Air Station, Cherry Point, North Carolina, 1994–2001, and Periodic Water Levels, 2000–2003

Open-File Report 2004–1434
By Beth M. Wrege and Philip S. Jen

Strat-4

Map showing location of Strat-4 well

Core interval and recovery from Strat-4 test hole

Lithologic log for Strat-4 test hole

Selected borehole geophysical logs collected in Strat-4 test hole

Strat-4 monitoring-well construction report

Periodic water levels in Strat-4 monitoring well

Hydrograph showing ground-water levels in Strat-4 monitoring well, September 2000–May 2002

Figure 16. Location of Strat-4 well at U.S. Marine Corps Air Station, Cherry Point, North Carolina.

**Table 10.** Core interval and recovery from Strat-4 test hole, U.S. Marine Corps Air Station, Cherry Point, North Carolina.
Cored interval, in feet	Recovery, in feet
35 – 37	2.0
55 – 57	1.9
150 – 152	2.0
180 – 182	1.4
120 – 122	2.0
Total = 10	9.3

**Table 11.** Lithologic log for Strat-4 test hole, U.S. Marine Corps Air Station, Cherry Point, North Carolina.
Depth below land surface (in feet)	Description (compiled by B.M. Wrege)
0.0 – 5.0	Sandy, clayey organic top SOIL, grading to sandy clay, trace gravel.
5.0 – 10.0	Clayey SAND, with silt, brownish gray.
10.0 – 15.0	Sand to gravel, clayey, grayish brown.
15.0 – 20.0	Sand, gravel, clay, silty.
20.0 – 25.0	Shells with clay, grayish brown.
25.0 – 30.0	Gray CLAY, some shells.
30.0 – 35.0	Gray CLAY with a few shells.
35.0 – 37.0	CLAY with shells.
37.0 – 40.0	CLAY, with shell hash, olive green, trace ochre.
40.0 – 48.0	Olive-green CLAY, dry, green clay with white and gray shell hash.
48.0 – 54.0	SAND with whitish clay stringers and some green clay with shells.
54.0 – 55.0	Olive green SAND.
55.0 – 57.0	SAND.
57.0 – 72.5	Silty, sandy CLAY.
72.5 – 79.0	Fine-grained SAND, heavy minerals, phosphate nodules.
79.0 – 82.0	Dry, dark olive-green CLAY.
82.0 – 91.0	Clayey SAND with shell hash.
91.0 – 97.0	Gray LIMESTONE with thin sand layers.
97.0 – 100.0	Gray LIMESTONE with shells, trace clay.
100.0 – 102.0	Gray SAND, trace heavy minerals.
102.0 – 119.0	Gray CLAY, tight, stiff.
119.0 – 120.5	Sandy CLAY, trace shells.
120.5 – 122.5	CLAY.
122.5 – 128.5	Very fine greenish-gray SAND, hard.
128.5 – 129.0	Dark-gray and whitish-gray SHELL layer.
129.0 – 131.0	Cherty SHELL hash, poor recovery, hard.
131.0 – 133.0	Silty SAND.
133.0 – 134.0	CLAY.
134.0 – 140.0	No sample, drills hard.
140.0 – 150.0	Green-gray CLAY.
150.0 – 151.0	Sandy CLAY, olive green.
151.0 – 152.0	Very fine SAND.
152.0 – 154.0	SHELL hash.
154.0 – 160.0	SHELL hash, sandy.
160.0 – 170.0	Dark-gray SHELL hash, sandy, some clay.
170.0 – 180.0	Dark-gray SHELL hash, sandy, some clay.
180.0 – 181.4	White LIMESTONE.
181.4 – 225.0	LIMESTONE.

Figure 17. Selected borehole geophysical logs collected in Strat-4 test hole, U.S. Marine Corps Air Station, Cherry Point, North Carolina.

Figure 18. Strat-4 monitoring-well construction report, U.S. Marine Corps Air Station, Cherry Point, North Carolina.

**Table 12.** Periodic water levels in Strat-4 monitoring well, U.S. Marine Corps Air Station, Cherry Point, North Carolina.
Date	Water level, in feet below land surface
09-21-2000	21.56
02-09-2001	22.61
05-03-2001	21.58
08-09-2001	23.12
03-29-2002	21.57
05-15-2002	23.02

Figure 19. Hydrograph of ground-water levels in Strat-4 monitoring well, U.S. Marine Corps Air Station, Cherry Point, North Carolina, September 2000–May 2002.

Abstract || Introduction || Methods || Test Hole Descriptions || Seismic Data || Marine Seismic Data || Land Seismic Data || Summary || References || Appendix

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