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Table T1. Coring summary, Site U1331. (See table notes.)

Site U1331
Time on site (h): 173.5 (2330 h, 14 March–0500 h, 22 March 2009)
Hole U1331A
Latitude: 12°4.088′N
Longitude: 142°9.696′W
Time on hole (h): 80.8 (2330 h, 14 March–0820 h, 18 March 2009)
Seafloor (drill pipe measurement below rig floor, m DRF): 5127.3
Distance between rig floor and sea level (m): 11.1
Water depth (drill pipe measurement from sea level, mbsl): 5116.2
Total depth (drill pipe measurement from rig floor, m DRF): 5317.9
Total penetration (drilling depth below seafloor, m DSF): 190.6
Total length of cored section (m): 190.6
Total core recovered (m): 155.1
Core recovery (%): 81
Total number of cores: 22
Hole U1331B
Latitude: 12°4.088′N
Longitude: 142°9.709′W
Time on hole (h): 38.0 (0820 h, 18 March–2200 h, 19 March 2009)
Seafloor (drill pipe measurement below rig floor, m DRF): 5127.4
Distance between rig floor and sea level (m): 11.1
Water depth (drill pipe measurement from sea level, mbsl): 5116.3
Total depth (drill pipe measurement from rig floor, m DRF): 5315.9
Total penetration (drilling depth below seafloor, m DSF): 188.5
Total length of cored section (m): 175.8
Total core recovered (m): 163.0
Core recovery (%): 93
Total number of cores: 20
Hole U1331C
Latitude: 12°4.089′N
Longitude: 142°9.720′W
Time on hole (h): 54.7 (2200 h,19 March–0500 h, 22 March 2009)
Seafloor (drill pipe measurement below rig floor, m DRF): 5128.0
Distance between rig floor and sea level (m): 11.1
Water depth (drill pipe measurement from sea level, mbsl): 5116.9
Total depth (drill pipe measurement from rig floor, m DRF): 5315.9
Total penetration (drilling depth below seafloor, m DSF): 189.0
Total length of cored section (m): 107.0
Total core recovered (m): 109.5
Core recovery (%): 102
Total number of cores: 12
Core
Date
(2009)
Local time
(h)
Depth DSF (m)
Interval advanced (m)
Depth CSF (m)
Length of core recovered
(m)
Recovery
(%)
Top of cored interval
Bottom of cored interval
Top of cored interval
Bottom of cored interval
320-U1331A-
1H 16 Mar 0830 0.0 5.2 5.2 0.0 5.2 5.19 100
2H 16 Mar 1000 5.2 14.7 9.5 5.2 15.1 9.87 104
3H 16 Mar 1115 14.7 24.2 9.5 14.7 24.4 9.69 102
4H 16 Mar 1245 24.2 33.7 9.5 24.2 34.2 9.99 105
5H 16 Mar 1410 33.7 43.2 9.5 33.7 43.0 9.32 98
6H 16 Mar 1535 43.2 52.7 9.5 43.2 52.7 9.45 99
7H 16 Mar 1655 52.7 62.2 9.5 52.7 62.7 9.95 105
8H 16 Mar 1816 62.2 71.7 9.5 62.2 72.2 10.02 105
9H 16 Mar 1956 71.7 81.2 9.5 71.7 81.7 9.96 105
10H 16 Mar 2202 81.2 90.7 9.5 81.2 90.5 9.33 98
11H 16 Mar 2330 90.7 100.2 9.5 90.7 99.5 8.82 93
12H 17 Mar 0045 100.2 109.7 9.5 100.2 110.2 10.00 105
13H 17 Mar 0220 109.7 119.2 9.5 109.7 119.6 9.93 105
14H 17 Mar 0350 119.2 128.7 9.5 119.2 129.3 10.08 106
15H 17 Mar 0530 128.7 138.2 9.5 128.7 138.6 9.90 104
16X 17 Mar 0710 138.2 147.6 9.4 138.2 139.3 1.10 12
17X 17 Mar 0830 147.6 157.3 9.7 147.6 157.1 9.46 98
18X 17 Mar 0955 157.3 160.5 3.2 157.3 157.6 0.25 8
19X 17 Mar 1200 160.5 167.0 6.5 160.5 162.4 1.91 29
20X 17 Mar 1355 167.0 176.7 9.7 167.0 167.1 0.06 1
21X 17 Mar 1505 176.7 186.4 9.7 176.7 176.7 0.00 0
22X 17 Mar 1635 186.4 190.6 4.2 186.4 187.2 0.80 19
Advanced total:
190.6
 
 
155.08 81
Total interval cored:
190.6
 
 
 
 
320-U1331B-
1H 18 Mar 1200 0.0 10.1 10.1 0.0 10.1 10.09 100
2H 18 Mar 1345 10.1 19.6 9.5 10.1 20.1 10.03 106
3H 18 Mar 1530 19.6 29.1 9.5 19.6 29.5 9.94 105
4H 18 Mar 1650 29.1 38.6 9.5 29.1 39.2 10.07 106
5H 18 Mar 1820 38.6 48.1 9.5 38.6 48.1 9.50 100
6H 18 Mar 1945 48.1 57.6 9.5 48.1 58.3 10.15 107
7H 18 Mar 2150 57.6 67.1 9.5 57.6 67.2 9.61 101
8H 18 Mar 2305 67.1 76.6 9.5 67.1 77.2 10.09 106
9H 19 Mar 0030 76.6 86.1 9.5 76.6 86.7 10.05 106
10H 19 Mar 0225 86.1 95.6 9.5 86.1 96.1 10.04 106
11H 19 Mar 0400 95.6 105.1 9.5 95.6 105.7 10.10 106
12H 19 Mar 0530 105.1 114.6 9.5 105.1 115.0 9.92 104
13H 19 Mar 0700 114.6 124.1 9.5 114.6 124.4 9.81 103
14H 19 Mar 0825 124.1 133.6 9.5 124.1 134.0 9.93 105
15H 19 Mar 0950 133.6 143.1 9.5 133.6 143.6 10.02 105
16H 19 Mar 1255 143.1 152.6 9.5 143.1 152.5 9.40 99
17H 19 Mar 1410 152.6 156.6 4.0 152.6 156.9 4.28 107
18X 19 Mar 1600 156.6 166.3 9.7 156.6 156.6 0.00 0
19D
*****Drilled from 166.3 to 177.0 m DSF*****
20H 19 Mar 1905 177.0 177.0 0.0 177.0
 
0.00 0
21D
*****Drilled from 177.0 to 179.0 m DSF*****
22X 19 Mar 2040 179.0 188.5 9.5 179.0
 
0.01 0
Advanced total:
188.5
 
 
163.04 93
Total interval cored:
175.8
 
 
 
 
320-U1331C-
1H 20 Mar 0235 0.0 9.5 9.5 0.0 9.5 9.46 100
2H 20 Mar 0430 9.5 19.0 9.5 9.5 19.5 10.02 105
3H 20 Mar 0640 19.0 28.5 9.5 19.0 28.8 9.77 103
4H 20 Mar 0810 28.5
 
9.5 28.5 38.5 9.99 105
5D
*****Drilled from 38.0 to 59.0 m DSF*****
6H 20 Mar 1230 59.0 92.5 9.5 59.0 68.5 9.54 100
7D
*****Drilled from 68.5 to 92.5 m DSF*****
8H 20 Mar 1930 92.5 102.5 9.5 92.5 101.7 9.21 97
9D
*****Drilled from 102.0 to 102.5 m DSF*****
10H 20 Mar 2045 102.5 129.0 9.5 102.5 111.0 8.48 89
11D
*****Drilled from 112.0 to 129.0 m DSF*****
12H 21 Mar 0030 129.0 138.5 9.5 129.0 139.1 10.05 106
13H 21 Mar 0130 138.5 148.0 9.5 138.5 148.6 10.09 106
14H 21 Mar 0345 148.0 177.0 9.5 148.0 156.9 8.94 94
15D
*****Drilled from 157.5 to 177.0 m DSF*****
16H 21 Mar 0850 177.0 184.0 7.0 177.0 185.46 8.46 121
17H 21 Mar 1040 184.0 189.0 5.0 184.0 189.53 5.53 111
Advanced total:
189.0
 
 
109.54 102
Total interval cored:
107.0
 
 
 
 

Notes: DRF = drilling depth below rig floor, DSF = drilling depth below seafloor, CSF = core depth below seafloor. H = APC core, X = XCB core. Local time = UTC – 10 h.

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