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Table T40. Overview of core samples analyzed for contamination using perfluorocarbon (PFC) tracer, calculated quantitative estimates of drilling fluid and contaminant cell intrusion, and lithologic characteristics of the respective samples, Hole C0020A.

Core, section,
interval (cm)
Depth
CSF-B (m)
Cross-sectional location Concentration Drilling fluid in
pore water (%)
Predicted contamination
(cells/cm3)
Lithology Remarks
(µg PFC/cm3
sediment)
(µL drilling
fluid/g
sediment)
337-C0020A-
1R-2, 65–81 1278.42 IN 9.5E–03 46.3 26.5 2.5E+07 Fine–medium sand  
1R-2, 65–81 1278.42 H 1.1E–02 55.4 31.7 3.0E+07    
1R-2, 65–81 1278.42 EX 7.1E–03 34.6 19.7 1.9E+07    
2R-3, 60–81 1289.39 IN 1.4E–03 7.3 3.4 3.8E+06 Fine–medium sandstone  
2R-3, 60–81 1289.39 H 3.6E–03 18.3 8.4 9.6E+06    
2R-3, 60–81 1289.39 EX 1.1E–02 57.2 26.3 3.0E+07    
3R-3, 60–77 1372.59 IN 1.6E–05 0.1 0.0 4.1E+04 Clayey siltstone  
3R-3, 60–77 1372.59 EX 5.2E–03 25.6 12.4 1.4E+07    
4R-3, 64–77 1378.09 IN 8.7E–05 0.4 0.2 2.3E+05 Clayey siltstone  
4R-3, 64–77 1378.09 H 2.3E–04 1.1 0.6 6.0E+05 Sandstone  
4R-3, 64–77 1378.09 EX 5.0E–03 25.0 13.5 1.3E+07 Siltstone  
5R-3, 24–39 1492.09 IN 2.4E–03 12.4 5.4 6.3E+06 Fine–medium sandstone  
5R-3, 24–39 1492.09 H 1.7E–03 8.7 3.8 4.4E+06  
5R-3, 24–39 1492.09 EX 1.6E–03 8.2 3.6 4.2E+06    
6R-2, 0–15 1496.41 IN 4.4E–06 0.0 0.0 1.2E+04 Fine–medium sandstone  
6R-2, 0–15 1496.41 EX 7.8E–04 3.8 2.2 2.1E+06    
7R-1, 53–65 1599.53 IN [2.4E–06] 0.0 0.0 6.5E+03 Shale  
7R-1, 53–65 1599.53 H 1.2E–05 0.1 0.0 3.3E+04    
7R-1, 53–65 1599.53 EX 1.5E–03 7.2 3.9 3.9E+06    
8L–5, 20–35 1607.36 IN 9.5E–06 0.1 0.0 2.5E+04 Shale vs. silt  
8L–5, 20–35 1607.36 H [2.0E–06] 0.0 0.0 5.4E+03    
8L–5, 20–35 1607.36 EX 2.0E–03 10.1 4.9 5.4E+06    
8L–9, 0–16 1611.17 IN [2.2E–06] 0.0 0.0 5.9E+03 Fine siltstone + plant remains  
8L–9, 0–16 1611.17 EX 5.1E–02 262.6 122.6 1.4E+08    
9R-4, 0–20 1628.34 IN 7.9E–06 0.0 0.0 2.1E+04 Siltstone  
9R-4, 0–20 1628.34 EX 1.9E–03 9.7 4.9 5.1E+06    
10R-2, 53–70 1631.44 IN [3.2E–06] 0.0 0.0 8.6E+03 Fine–medium sandstone  
10R-2, 53–70 1631.44 H 4.1E–06 0.0 0.0 1.1E+04    
10R-2, 53–70 1631.44 EX 1.3E–02 74.6 27.6 3.6E+07    
11R-2, 0–40 1738.88 OUT 1.4E–02 68.3 32.6 3.6E+07 Fine–medium sandstone  
11R-3, 0–18 1739.63 IN 3.3E–05 0.2 0.1 8.8E+04 Fine sandstone  
11R-3, 0–18 1739.63 H 3.5E–05 0.2 0.1 9.4E+04    
11R-3, 0–18 1739.63 EX 3.2E–03 16.2 7.7 8.5E+06    
11R-5, 58–75 1743.08 IN 9.9E–06 0.1 0.0 2.6E+04 Siltstone + sandstone  
11R-5, 58–75 1743.08 EX 1.0E–02 52.0 24.6 2.7E+07    
12R-6, 39–44 1753.82 IN [2.6E–06] 0.0 0.0 6.8E+03 Siltstone  
12R-6, 39–44 1753.82 EX 2.6E–05 0.1 0.3 6.9E+04    
12R-7, 15–30 1754.69 IN [3.2E–06] 0.0 0.0 8.5E+03 Fine sandstone  
12R-7, 15–30 1754.69 H 6.1E–06 0.0 0.0 1.6E+04    
12R-7, 15–30 1754.69 EX 8.6E–05 0.4 0.3 2.3E+05    
12R-7, 30–50 1754.84 OUT 4.6E–03 21.2 14.7 1.2E+07 Fine sandstone  
13R-2, 4.5–44 1757.91 OUT 1.2E–02 56.3 39.1 3.2E+07 Silty fine sandstone  
13R-2, 44–59 1758.31 IN 3.7E–05 0.2 0.1 9.7E+04 Fine sandstone  
13R-2, 44–59 1758.31 H 1.1E–05 0.1 0.0 2.8E+04    
13R-2, 44–59 1758.31 EX 4.3E–03 19.7 13.7 1.1E+07    
13R-8, 60–76 1765.16 IN [3.0E–06] 0.0 0.0 8.1E+03 Fine sandstone  
13R-8, 60–76 1765.16 H 4.8E–05 0.2 0.2 1.3E+05    
13R-8, 60–76 1765.16 EX 2.3E–04 1.1 0.7 6.2E+05    
14R-2, 105–120 1822.46 IN [2.6E–06] 0.0 0.0 6.9E+03 Fine sandstone silt with shale lamination  
14R-2, 105–120 1822.46 H 1.2E–04 0.5 0.4 3.2E+05    
14R-2, 105–120 1822.46 EX 2.6E–03 11.6 9.0 6.9E+06    
14R-3, 0–45 1821.41 OUT 2.0E–02 88.8 73.1 5.3E+07 Fine sandstone  
15R-2, 0–17 1920.40 IN 1.1E–05 0.1 0.0 2.9E+04 Coal  
15R-2, 0–17 1920.40 EX 7.0E–04 5.4 2.5 1.9E+06    
15R-5, 0–21 1923.64 IN [2.4E–06] 0.0 0.0 6.5E+03 Coaly shale  
15R-5, 0–21 1923.64 H 4.4E–05 0.2 0.2 1.2E+05    
15R-5, 0–21 1923.64 EX 7.0E–04 3.1 3.1 1.9E+06    
15R-5, 21–40 1923.85 OUT 5.2E–06 0.0 0.0 1.4E+04    
15R-7, 18–33 1925.65 IN 1.3E–04 0.6 0.1 3.3E+05 Silty fine sand  
15R-7, 18–33 1925.65 EX 2.9E–04 1.4 0.9 7.8E+05    
15R-7, 33–41 1925.80 IN [1.9E–06] 0.0 0.01 5.1E+03    
15R-7, 33–41 1925.80 H [2.1E–06] 0.0 0.0 5.6E+03    
15R-7, 33–41 1925.80 EX 5.7E–03 26.6 17.6 1.5E+07    
16R-2, 0–18 1929.51 IN 1.7E–04 0.8 0.5 4.6E+05 Fine–middle sand  
16R-2, 0–18 1929.51 H 2.2E–02 107.0 62.4 5.9E+07    
16R-2, 0–18 1929.51 EX 8.0E–03 38.7 22.6 2.1E+07    
16R-2, 18–77 1929.69 EX 2.6E–03 12.5 6.9 6.9E+06    
17R-1, 45–60 1936.45 IN 2.2E–05 0.1 0.1 5.9E+04   From sand layer
17R-1, 45–60 1936.45 H 5.6E–03 26.1 18.1 1.5E+07 Layers of middle sand + silty shale From sand layer
17R-1, 45–60 1936.45 EX 8.5E–03 39.5 27.4 2.3E+07   From sand layer
17R-1, 45–60 1936.45 IN 2.4E–04 1.1 0.8 6.3E+05   From coal layer
17R-1, 45–60 1936.45 H 9.1E–04 4.2 2.9 2.4E+06   From coal layer
17R-1, 45–60 1936.45 EX 3.9E–03 18.3 12.7 1.0E+07   From coal layer
17R-1, 60–100 1936.60 EX 2.0E–05 0.1 0.1 5.3E+04 Middle sand + clay clasts/layers  
17R-1, 137–141 1937.37 IN 3.2E–03 16.3 7.8 8.6E+06    
17R-4, 65–85 1939.35 EX 1.0E–03 4.9 2.9 2.7E+06 Cemented sandstone with mud clasts  
17R-4, 85–95 1939.55 IN 3.3E–05 0.2 0.1 8.7E+04    
17R-4, 85–95 1939.55 H 6.6E–05 0.3 0.2 1.8E+05    
17R-4, 85–95 1939.55 EX 5.5E–03 26.1 15.3 1.5E+07    
17R-4, 137–141 1940.07 IN 1.1E–03 5.1 3.0 2.8E+06    
17R-6, 62–66 1941.49 IN 5.6E–06 0.0 0.0 1.5E+04    
17R-8, 116.5–120.5 1944.10 IN 6.5E–06 0.0 0.0 1.7E+04    
17R-9, 10–25 1944.24 IN 7.7E–06 0.0 0.0 2.0E+04 Fine sandstone  
17R-9, 10–25 1944.24 H 1.4E–03 6.8 3.9 3.7E+06    
17R-9, 10–25 1944.24 EX 3.1E–03 15.1 8.7 8.3E+06    
17R-9, 25–51 1944.39 EX 3.5E–04 1.6 1.1 9.4E+05    
18R-1, 105–115 1946.55 IN 9.8E–05 0.8 0.3 2.6E+05 Coal  
18R-1, 105–115 1946.55 H 2.4E–05 0.2 0.1 6.4E+04    
18R-1, 105–115 1946.55 EX 4.6E–04 3.8 1.5 1.2E+06    
18R-1, 111–115 1946.61 IN 1.1E–04 0.9 0.3 2.8E+05    
19R-1, 85–115 1950.85 EX 3.4E–05 0.2 0.1 9.0E+04 Silty shale-organic matter rich + fine sand  
19R-1, 115–141 1951.15 IN [3.1E–06] 0.0 0.0 8.2E+03    
19R-1, 115–141 1951.15 H [3.8E–06] 0.0 0.0 1.0E+04    
19R-1, 115–141 1951.15 EX 1.4E–05 0.1 0.1 3.8E+04    
19R-1, 137–141 1951.37 IN 2.3E–04 1.0 0.9 6.0E+05    
19R-3, 137–141 1953.37 IN [4.8E–06] 0.0 0.0 1.3E+04    
19R-4, 86–90 1954.16 IN 5.4E–05 0.3 0.2 1.4E+05 Shale  
19R-5, 0–27 1954.13 EX 3.4E–04 1.3 10.5 9.2E+05 Silt/carbonate cemented silt  
19R-7, 137–141 1957.91 IN 1.5E–03 6.9 5.9 4.1E+06    
19R-8, 60–77 1958.44 IN 2.7E–06 0.0 0.0 7.2E+03 Sand with plant remains  
19R-8, 60–77 1958.44 H 9.5E–05 0.5 0.2 2.5E+05    
19R-8, 60–77 1958.44 EX 1.1E–04 0.6 0.2 2.9E+05    
19R-9, 0–20 1958.55 IN 2.5E–03 12.6 6.3 6.7E+06 Silty sand  
19R-9, 0–20 1958.55 H 1.4E–03 7.1 3.6 3.8E+06    
19R-9, 0–20 1958.55 EX 6.1E–03 30.5 15.2 1.6E+07    
19R-9, 30–60 1958.85 EX 2.1E–04 1.1 0.5 5.6E+05    
20R-2, 62–66 1961.53 IN [5.3E–06] 0.0 0.0 1.4E+04    
20R-3, 0–13 1961.57 IN [2.0E–06] 0.0 0.0 5.4E+03 Sandy silt  
20R-3, 0–13 1961.57 H 1.1E–05 0.1 0.0 2.9E+04    
20R-3, 0–13 1961.57 EX 2.7E–04 1.2 0.8 7.1E+05    
20R-3, 23–77.5 1961.80 EX 1.3E–03 5.8 3.8 3.4E+06    
20R-6, 47–51 1965.65 IN 4.0E–06 0.0 0.0 1.1E+04    
20R-7, 0–52 1965.69 EX 1.0E–04 0.5 0.4 2.8E+05 Organic-rich silty shale  
20R-7, 62–76 1966.31 IN 1.7E–05 0.1 0.1 4.5E+04 Silty fine sand  
20R-7, 62–76 1966.31 H 10.0E–05 0.4 0.4 2.7E+05    
20R-7, 62–76 1966.31 EX 3.2E–04 1.4 1.2 8.6E+05    
21R-1, 138–142 1970.38 IN 1.8E–04 0.8 0.6 4.9E+05    
21R-4, 0–32 1969.00 EX 2.5E–05 0.1 0.1 6.7E+04    
21R-4, 32–42 1969.32 IN [2.0E–06] 0.0 0.0 5.3E+03 Fine sand vs. coaly layers  
21R-4, 32–42 1969.32 H [2.3E–06] 0.0 0.0 6.0E+03    
21R-4, 32–42 1969.32 EX 5.9E–05 0.3 0.2 1.6E+05    
22R-4, 0–4 1977.19 IN 1.8E–03 8.3 6.2 4.8E+06    
23R-1, 95–96 1982.45 IN 5.2E–05 0.2 0.2 1.4E+05    
23R-1, 95–96 1982.45 OUT 3.3E–03 14.7 12.5 8.7E+06    
23R-3, 139–140 1985.19 IN 3.4E–04 1.5 1.3 8.9E+05    
23R-3, 139–140 1985.19 OUT 8.7E–04 3.9 3.4 2.3E+06    
23R-5, 99.5–100.5 1987.13 IN 7.6E–06 0.0 0.0 2.0E+04    
23R-5, 99.5–100.5 1987.13 OUT 3.4E–04 1.5 1.6 9.2E+05    
23R-6, 48–76 1987.64 EX 2.3E–06 0.0 0.0 6.2E+03 Shale with plant remains + coaly shale (?)  
23R-6, 75–76 1987.91 IN 5.9E–06 0.0 0.0 1.6E+04    
23R-6, 75–76 1987.91 OUT 5.8E–04 2.6 2.7 1.5E+06    
23R-7, 0–1 1987.90 IN 7.6E–05 0.3 0.3 2.0E+05    
23R-7, 0–1 1987.90 OUT 3.2E–03 14.3 12.6 8.5E+06    
23R-8, 0–15 1989.27 IN [1.6E–06] 0.0 0.0 4.2E+03 Silt with plant remains  
23R-8, 0–15 1989.27 H 1.6E–02 71.9 54.2 4.2E+07    
23R-8, 0–15 1989.27 EX 5.6E–03 25.4 19.2 1.5E+07    
24R-1, 100–101 1992.00 IN [4.3E–06] 0.0 0.0 1.2E+04    
24R-1, 100–101 1992.00 OUT 1.4E–02 68.4 37.4 3.7E+07    
24R-3, 55–65 1993.77 IN 2.1E–05 0.2 0.1 5.6E+04 Coal  
24R-3, 55–65 1993.77 EX 5.7E–04 4.7 1.5 1.5E+06    
24R-3, 74.5–75.5 1993.96 IN 5.7E–06 0.1 0.0 1.5E+04    
24R-3, 74.5–75.5 1993.96 OUT 2.5E–03 20.6 6.8 6.8E+06    
25R-1, 140–141 1996.40 IN [3.7E–06] 0.0 0.0 9.8E+03    
25R-1, 140–141 1996.40 OUT 5.9E–03 27.5 18.3 1.6E+07    
25R-2, 70–85 1997.11 IN 1.7E–05 0.1 0.1 4.5E+04    
25R-2, 70–85 1997.11 H 1.8E–04 0.8 0.7 4.7E+05    
25R-2, 70–85 1997.11 EX 4.5E–04 2.0 1.9 1.2E+06    
25R-2, 140–141 1997.81 IN 2.7E–05 0.1 0.1 7.2E+04    
25R-2, 140–141 1997.81 OUT 3.8E–03 17.1 15.8 1.0E+07    
25R-3, 120–141 1999.02 IN [2.2E–06] 0.0 0.0 5.9E+03    
25R-3, 120–141 1999.02 H [2.2E–06] 0.0 0.0 5.8E+03    
25R-3, 120–141 1999.02 EX 1.1E–04 0.5 0.5 3.0E+05    
25R-3, 140–141 1999.22 IN 1.6E–05 0.1 0.1 4.2E+04    
25R-3, 140–141 1999.22 OUT 2.3E–03 1.0 9.7 6.2E+06    
25R-4, 0–15 1999.23 IN [7.0E–06] 0.0 0.0 1.9E+04 Silty shale  
25R-4, 0–15 1999.23 H 9.9E–05 0.4 0.5 2.6E+05    
25R-4, 0–15 1999.23 EX 2.3E–02 98.2 105.4 6.1E+07    
25R-5, 139.5–140.5 2001.39 IN 6.0E–04 2.8 1.9 1.6E+06    
25R-5, 139.5–140.5 2001.39 OUT 7.9E–03 36.9 24.6 2.1E+07    
26R-2, 0–9 2111.38 IN 3.4E–05 0.2 0.1 9.0E+04 Coal ?  
26R-2, 0–9 2111.38 H 1.5E–05 0.1 0.1 4.0E+04 Shale  
26R-2, 0–9 2111.38 EX 6.2E–03 27.9 21.5 1.7E+07    
26R-4, 139–140 2114.85 IN 3.3E–05 0.2 0.1 8.8E+04    
26R-4, 139–140 2114.85 OUT 3.8E–03 17.2 12.8 1.0E+07 Shale  
26R-6, 0–15 2115.58 IN [3.0E–06] 0.0 0.0 8.0E+03 Shale-silty  
26R-6, 0–15 2115.58 H 1.1E–05 0.1 0.0 3.0E+04    
26R-6, 0–15 2115.58 EX 8.0E–03 35.9 25.9 2.1E+07    
26R-7, 0–1 1226.97 IN [2.3E–06] 0.0 0.0 6.1E+03    
26R-7, 0–1 1226.97 OUT 8.6E–04 3.9 2.7 2.3E+06    
26R-7, 84–101 1227.81 IN [9.3E–06] 0.0 0.0 2.5E+04 Shale  
26R-7, 84–101 1227.81 H 1.5E–05 0.1 0.1 3.9E+04    
26R-7, 84–101 1227.81 EX 1.7E–03 7.7 5.6 4.5E+06    
27R-2, 0–1 2201.00 IN [6.5E–06] 0.0 0.0 1.7E+04    
27R-2, 0–1 2201.00 OUT 2.9E–03 12.8 11.3 7.7E+06    
27R-2, 61–80 2201.61 IN 2.2E–06 0.0 0.0 5.8E+03 Silt  
27R-2, 61–80 2201.61 H 2.4E–05 0.1 0.1 6.5E+04    
27R-2, 61–80 2201.61 EX 1.7E–04 0.8 0.7 4.7E+05    
27R-3, 143–144 2203.23 IN 4.2E–06 0.0 0.0 1.1E+04    
27R-3, 143–144 2203.23 OUT 5.8E–03 26.1 21.6 1.5E+07    
28R-2, 140–141 2302.81 IN 2.1E–05 0.1 0.1 5.6E+04    
28R-2, 140–141 2302.81 OUT 3.4E–03 15.6 11.2 9.0E+06    
28R-3, 0–24 2302.82 IN [2.9E–06] 0.0 0.1 7.8E+03 Siltstone  
28R-3, 0–24 2302.82 EX 3.6E–05 0.1 0.6 9.5E+04    
28R-3, 0–24 2302.82 H 2.3E–06 0.0 0.0 6.1E+03    
28R-3, 24–75 2303.06 EX 4.8E–04 1.8 7.3 1.3E+06    
28R-5, 140–141 2306.39 IN [6.3E–06] 0.0 0.0 1.7E+04    
28R-5, 140–141 2306.39 OUT 2.6E–03 11.8 9.1 7.0E+06    
28R-6, 0–30 2306.39 EX 9.1E–06 0.0 0.0 2.4E+04 Fine sandstone with clay clasts  
28R-6, 30–45 2306.69 IN [1.6E–06] 0.0 0.0 4.3E+03 Fine sandstone with clay clasts  
28R-6, 30–45 2306.69 EX 3.0E–03 13.5 10.9 8.1E+06    
28R-6, 30–45 2306.69 H 2.1E–06 0.0 0.0 5.6E+03    
29R-1, 139.5–140.5 2401.40 IN [3.5E–06] 0.0 0.0 9.4E+03    
29R-1, 139.5–140.5 24001.40 OUT 1.1E–03 4.8 3.9 2.8E+06    
29R-2, 17.5–27 2401.58 IN 1.9E–05 0.1 0.1 5.1E+04 Silty sandstone  
29R-2, 17.5–27 2401.58 H 3.3E–05 0.2 0.1 8.8E+04    
29R-2, 17.5–27 2401.58 EX 2.5E–02 112.7 90.6 6.7E+07    
29R-2, 27–47 2401.68 EX 2.7E–06 0.0 0.0 7.3E+03    
29R-3, 137–138 2403.54 IN [8.2E–06] 0.0 0.1 2.2E+04    
29R-3, 137–138 2403.54 OUT 1.8E–02 72.2 102.2 4.7E+07    
29R-3, 138–141 2403.55 IN 4.7E–05 0.2 0.3 1.2E+05    
29R-3, 138–141 2403.55 OUT 1.6E–02 63.7 90.1 4.1E+07    
29R-5, 59–81 2405.57 IN 6.9E–05 0.3 0.3 1.8E+05 Fine sandstone  
29R-5, 59–81 2405.57 H 6.8E–06 0.0 0.0 1.8E+04    
29R-5, 59–81 2405.57 EX 5.6E–02 254.3 206.3 1.5E+08    
29R-5, 81–101 2405.79 EX [5.9E–06] 0.0 0.0 1.6E+04 Fine sand  
29R-7, 139.5–140.5 2408.15 IN 2.5E–04 1.0 1.8 6.8E+05    
29R-7, 139.5–140.5 2408.15 OUT 1.7E–02 65.3 114.1 4.4E+07    
30R-3, 0–1 2448.68 IN 4.2E–04 1.9 1.6 1.1E+06    
30R-3, 0–1 2448.68 OUT 4.0E–03 17.5 15.4 1.1E+07    
30R-4, 0–1 2449.70 IN 1.4E–03 6.3 5.8 3.8E+06    
30R-4, 0–1 2449.70 OUT 4.4E–03 19.5 18.0 1.2E+07    
30R-4, 44–81 2450.14 EX 1.6E–04 0.7 0.7 4.2E+05    
30R-4, 6–23 2449.76 IN [2.1E–06] 0.0 0.0 5.5E+03 Fine sand  
30R-4, 6–23 2449.76 H [1.9E–06] 0.0 0.0 5.0E+03    
30R-4, 6–23 2449.76 EX 4.9E–04 2.2 2.0 1.3E+06    
32R-1, 144–145 2457.94 IN 7.8E–05 0.3 0.3 2.1E+05 Fine sandstone  
32R-1, 144–145 2457.94 OUT 1.4E–04 0.6 0.6 3.7E+05 Silty shale  
32R-2, 43–65 2458.38 IN 7.6E–05 0.3 0.3 2.0E+05    
32R-2, 43–65 2458.38 H 2.6E–06 0.0 0.0 6.9E+03    
32R-2, 43–65 2458.38 EX 3.4E–02 147.4 140.4 9.0E+07    
32R-6, 70–71 2463.64 IN 2.6E–05 0.1 0.1 6.9E+04    
32R-6, 70–71 2463.64 OUT 3.1E–03 13.6 13.3 8.3E+06    

Samples in which PFC was below detection, values were calculated assuming the detection amount (8 pg) and are shown in brackets. BD = below detection. IN = innermost part of core, H = halfway between liner and core center, EX = outer centimeter of core after removal of contaminated outer surface, OUT = contaminated outer surface of core that is in contact with core liner.

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