Previous   |    Close   |    Next

Table T19. Core disturbance intervals, Sites U1428 and U1429.

Core, section,
interval (cm) 		Comments on disturbance Drilling disturbance intensity Comments
346-U1428A-
1H-1, 0–140 Soupy Slight  
1H-2, 0–130 Soupy and mixed with ash    
1H-CC, 0–15   Slight  
2H-1, 0–50 Slightly mixed sediments    
2H-6, 67–108 Soupy and mixed with ash    
3H-CC, 0–21   Slight  
4H-CC, 0–42   Slight  
5H-3, 10–62 Soupy and mixed with ash    
5H-4, 55–152 White soupy ash    
5H-5, 0–7 White soupy ash    
5H-5, 63–149 Soupy and mixed with gray ash    
5H-6, 0–92 Soupy gray ash-pumice    
6H-1, 0–18 Disturbed Severe  
6H-5, 55–85 Ash patches    
6H-5, 85–97 Microfault    
8H-4, 0–70 Ash and mixed layers    
10H-1, 0–151 Soupy ash Moderate Not measured
10H-2, 0–136 Soupy ash   Not measured
10H-3, 0–150 Soupy ash   Not measured
10H-4, 0–150 Soupy ash   Not measured
10H-5, 0–150 Soupy ash   Not measured
10H-6, 0–151 Soupy ash   Not measured
10H-7, 0–54 Soupy ash   Not measured
11H-1, 0–51 Excluded on rig floor    
11H-1, 0–51 Void    
11H-2, 80–89   Slight to moderate  
11H-4, 79–84 Red-brown ash    
11H-7, 20–27 Gas expansion    
11H-7, 85–110 Gas expansion    
12H-1, 0–47 Void    
12H-2, 80–89 Void    
12H-2, 111–117 Soupy ash    
12H-4, 62–73 Gas expansion    
12H-4, 143–147 Void    
12H-5, 25–26 Crack    
12H-6, 0–90 White + gray ash mixed with sediments    
12H-6, 138–150 Void    
13H-1, 35–62 Ash    
13H-1, 138–146 Microfault    
13H-1, 147–150 Void    
13H-4, 145–150 Void    
13H-5, 145–150 Void    
13H-7, 29–30 Crack    
14H-2, 108–111 Crack    
14H-5, 56–60 Void    
14H-5, 110–125 Ash + mixed sediments    
14H-6, 108–122 Void    
14H-7, 66–71 Gas expansion Slight  
15H-2, 93–94 Void    
15H-2, 110–126 Sand    
15H-3, 0–10 Sand    
15H-5, 0–73 Sand   Not measured
15H-6, 0–101 Sand   Not measured
16H-1, 0–132 Sand   Not measured
16H-2, 0–131 Sand   Not measured
16H-3, 0–123 Sand   Not measured
16H-4, 0–139 Sand   Not measured
16H-5, 0–84 Sand   Not measured
18H-1, 0–122 Sand   Not measured
18H-2, 0–104 Sand   Not measured
18H-3, 0–113 Sand   Not measured
18H-4, 0–118 Sand   Not measured
18H-5, 0–131 Sand   Not measured
18H-6, 0–109 Sand   Not measured
19H Only CC    
21H-1, 0–141 Sand   Not measured
23H-1, 25–60 Gas expansion High  
23H-4, 50–130 Mass transfer deposit High  
23H-5, 98–118 Gas expansion    
23H-5, 0–17 Sand High  
23H-6, 36–75 Gas expansion High  
23H-6, 125–135 Sand High  
23H-7, 0–102 Soupy ash High  
24H-1, 0–84 Sand High Not measured
24H-2, 0–111 Sand   Not measured
24H-3, 0–85 Sand   Not measured
24H-4, 0–109 Sand   Not measured
26H-1, 0–85 Suck in High Not measured
26H-2, 0–92 Sand   Not measured
26H-3, 0–82 Sand   Not measured
26H-4, 0–76 Sand   Not measured
26H-5, 0–100 Sand   Not measured
32H-1, 0–114 Sand   Not measured
32H-2, 0–100 Sand   Not measured
32H-3, 0–122 Sand   Not measured
32H-4, 0–116 Sand   Not measured
346-U1428B-
1H-1, 0–39 Soupy Slight  
1H-2, 78–89 Soupy ash    
2H-1, 0–39 Soft tephra layer Slight  
3H-1, 0–11 Mousselike Slight to moderate  
3H-3, 0–150 Soupy ash + suck in    
4H-1, 0–17 Soupy    
4H-CC, 0–21   Slight  
5H-1, 0–23 Soupy Slight to moderate  
5H-1, 22–49 Crack Moderate to high  
5H-5, 122–150 Soupy ash    
5H-7, 0–57 Soupy ash    
5H-CC, 0–11   Slight  
6H-1, 0–150 Mousselike ash Moderate to high  
6H-2, 0–58 Mousselike ash Moderate  
7H-1, 0–5 Mousselike Slight  
7H-1, 18–70 Sand mixed    
8H-1, 0–55 Mousselike Slight to moderate  
8H-2, 77–80 Crack    
8H-6, 108–151 Ash    
8H-7, 0–29 Ash + gas expansion    
8H-7, 50–51 Crack    
8H-CC, 0–29   Slight  
9H-1, 0–38 Mousselike Moderate  
9H-5, 25–151 Ash mixed    
9H-6, 0–57 Ash mixed    
9H-CC, 0–29   Slight  
10H-2, 50–57 Gas expansion    
10H-2, 57–63 Void    
10H-2, 119–125 Crack    
10H-3, 53–60 Void    
10H-4, 0–130 Soupy ash    
10H-5, 0–150 Soupy ash and sand suck in High Not measured
10H-6, 0–117 Soupy ash and sand suck in High Not measured
10H-7, 0–98 Soupy ash and sand suck in High Not measured
10H-CC, 0–33 Soupy ash and sand suck in High Not measured
11H-1, 0–54 Mousselike High  
11H-3, 120–121 Crack    
11H-4, 28–29 Crack Slight  
11H-4, 40–40 Crack    
11H-4, 49–55 Crack    
11H-6, 65–66 Crack    
11H-6, 104–105 Crack    
11H-7, 24–27 Gas expansion Moderate  
11H-7, 34–38 Crack    
11H-CC, 0–34   Moderate  
12H-7, 0–41 Disturbed    
13H-1, 0–40 Soupy High  
13H-1, 100–103 Crack    
13H-1, 126–130 Gas expansion    
13H-2, 26–35 Gas expansion    
13H-2, 145–150 Void    
13H-3, 66–98 Ash    
13H-4, 29–70 Gas expansion    
13H-6, 80–80 Crack    
13H-6, 102–109 Gas expansion    
14H-1, 0–26 Gas expansion Moderate  
14H-2, 45–56 Gas expansion + void    
14H-3, 95–100 Void    
14H-4, 29–42 Gas expansion    
14H-5, 37–48 Gas expansion    
15H-1, 0–11 Gas expansion    
15H-4, 52–56 Sand mixed    
15H-4, 116–141 Sand    
15H-7, 22–58 Sand    
16H-1, 0–19 Sand mixed   Not measured
16H-1, 57–69 Gas expansion + void   Not measured
16H-1, 70–109 Sand mixed   Not measured
16H-2, 0–94 Sand   Not measured
16H-3, 0–133 Sand   Not measured
16H-4, 0–107 Sand   Not measured
16H-5, 0–140 Sand   Not measured
16H-6, 0–118 Sand   Not measured
16H-7, 0–80 Sand   Not measured
346-U1429A-
1H-1, 0–150 Soupy    
1H-2, 0–150 Soupy + ash    
2H-1, 0–145 Mixed sediments?    
3H-1, 0–150 Soupy ash    
5H-1, 20–26 Microfault    
6H-1, 0–66 Gray ash    
6H-3, 0–150 Suck in High  
6H-4, 0–150 Suck in High Not measured
6H-5, 0–123 Suck in High Not measured
7H-1, 0–44 Ash fall-in Slight  
8H-3, 60–116 Ash    
9H-1, 0–16 Soupy High  
9H-2, 50–52 Void    
9H-3, 147–150 Void    
10H-5, 15–55 Ash    
11H-3, 78–79 Crack    
11H-4, 45–55 Crack    
12H-1, 0–130 Ash    
12H-1, 130–150 Void    
12H-2, 0–149 Ash    
12H-3, 0–17 Disturbance    
12H-3, 145–150 Void    
12H-CC, 0–26   Slight  
13H-4, 0–149 mixed with ash    
13H-5, 0–103 Soupy ash    
13H-6, 0–80 Soupy ash   Not measured
15H-1, 0–73 Fall-in + sand Moderate  
15H-1, 144–150 Void    
15H-2, 59–65 Void    
15H-CC, 0–35   Slight  
16H-7, 20–31 Gas expansion    
16H-CC, 0–31   Slight  
17H-1, 23–31 Gas expansion    
17H-7, 30–56 Gas expansion    
17H-CC, 0–34   Slight  
18H-2, 80–114 Ash    
18H-3, 0–55 Ash    
18H-5, 73–82 Gas expansion Moderate to high  
18H-CC, 0–27 Suck in Moderate to high  
20H-1, 0–15 Fall-in Moderate  
20H-2, 0–4   Moderate  
20H-CC, 0–30   Slight  
21H-1, 0–8   Slight  
21H-2, 125–149 Ash    
21H-3, 0–8 Ash    
21H-CC, 0–23   Slight  
22H-3, 85–127 Sand + soupy Suck in?  
22H-4, 0–102 Sand + soupy Suck in? Not measured
22H-5, 0–103 Sand + soupy Suck in? Not measured
22H-6, 0–88 Sand + soupy Suck in? Not measured
22H-7, 0–67 Sand + soupy Suck in? Not measured
22H-CC, 0–16 Sand + soupy Suck in?  
23H-1, 0–93 Sand + soupy Suck in? Not measured
23H-2, 0–77 Sand + soupy   Not measured
23H-3, 0–91 Sand + soupy   Not measured
23H-4, 0–97 Sand + soupy   Not measured
346-U1429B-
1H-1, 0–30 Soupy    
1H-2, 45–124 Ash + suck in High  
2H-1, 0–13 Soupy    
2H-1, 110–149 Ash patches    
3H-1, 0–20 Soupy High  
3H-4, 0–47 Soupy High  
4H-1, 0–10 Soupy    
4H-2, 70–105 Soupy    
5H-1, 0–12 Soupy    
6H-5, 80–150 Ash + suck in Severe  
6H-6, 0–150 Soupy ash suck in Severe Not measured
6H-7, 0–66 Soupy ash suck in Severe Not measured
6H-CC, 0–10 Suck in Severe  
7H-1, 0–150 Soupy ash suck in Severe  
7H-3, 0–150 Ash High  
8H-1, 0–18 Disturbed    
9H-1, 0–19 Soupy    
9H-4, 34–36 Crack    
9H-6, 125–140 Gas expansion    
10H-1, 0–18 Soupy    
10H-7, 31–34 Void    
10H-2, 39–41 Crack    
10H-7, 32–46 Void    
11H-1, 0–33 Gas expansion    
11H-1, 100–140 Ash    
11H-3, 40–41 Crack    
12H-3, 54–56 Crack    
12H-4, 0–152 Ash High  
12H-5, 0–150 Ash High  
12H-6, 0–13 Ash High  
12H-7, 0–96 Suck in High  
13H-1, 0–26 Extruded onto the drill floor Slight Not measured
13H-3, 144–150 Void    
13H-5, 20–22 Crack    
13H-5, 30–32 Crack    
14H-1, 0–150 Suck in Severe Not measured
14H-2, 0–68 Soupy ash suck in   Not measured
14H-3, 0–78 Soupy ash suck in   Not measured
14H-4, 0–88 Soupy ash suck in   Not measured
14H-5, 0–57 Soupy ash suck in   Not measured
14H-6, 0–36 Soupy ash suck in   Not measured
15H Suck in High Not measured
16H-1, 0–16 Fall-in Moderate to high  
16H-3, 10–21 Disturbed    
16H-3, 142–150 Void    
16H-7, 10–91 Disturbed   Not measured
17H-1, 0–45 Fall-in Moderate  
17H-3, 0–22 Gas expansion Slight to moderate  
17H-4, 143–149 Void    
17H-5, 104–118 Gas expansion    
17H-5, 135–146 Gas expansion    
17H-6, 139–141 Crack    
17H-7, 38–43 Gas expansion    
18H-1, 0–3 Fall-in Moderate to High  
18H-2, 55–56 Crack    
18H-3, 23–27 Gas expansion Moderate  
18H-5, 35–43 Gas expansion    
18H-5, 82–92 Soupy tephra Slight to moderate  
18H-6, 98–108 Gas expansion Moderate  
18H-6, 117–123 Gas expansion    
18H-6, 134–137 Gas expansion    
19H-1, 0–12 Disturbed    
19H-1, 147–150 Void    
19H-2, 98–100 Crack    
19H-2, 115–149 Soupy ash    
19H-3, 0–12 Ash    
19H-3, 77–113 Ash    
19H-6, 115–120      
19H-7, 9–109 Mousselike, crushed core liner, massive disturbance High  
20H-1, 0–4 Fall-in High  
20H-7, 0–34 Ash    
21H-4, 0–10 Sand    
21H-4, 100–150 Sand    
21H-7, 61–64 Void    
22H-1, 0–89 Sand High Not measured
22H-2, 0–107 Sand   Not measured
22H-3, 0–132 Sand   Not measured
22H-4, 0–128 Sand   Not measured
22H-5, 0–125 Sand   Not measured
22H-6, 0–136 Sand   Not measured
346-U1429C-
1H-1, 0–147 Mixed sediments?    
1H-2, 0–151 Ash    
1H-CC, 0–20   Slight  
2H-1, 0–50 Soupy    
2H-CC, 0–36   Slight to moderate  
3H-1, 0–35 Mousselike    
3H-3, 0–63 Soupy ash    
3H-CC, 0–30   Slight to moderate  
4H-1, 0–27 Mousselike Slight to moderate  
4H-CC, 0–16   Slight  
5H-1, 0–50 Mousselike Slight to moderate  
5H-3, 0–100 Crack within sediment vertically Slight to moderate  
6H-1, 0–16 Soupy Slight to moderate  
6H-2, 120–150 Soupy    
8H-1, 0–20 Soupy Slight to moderate  
8H-2, 0–150 Soupy ash   Not measured
8H-2, 0–17 Sand    
9H-1, 0–10 Soupy Slight to moderate  
9H-6, 15–20 Disturbed?    
10H-1, 0–13 Disturbed?    
10H-1, 140–150 Ash    
10H-2, 0–27 Ash    
12H-1, 0–10 Disturbed    
12H-3, 130–151 Ash    
12H-4, 0–19 Ash    
13H-6, 70–149 Ash    
13H-7, 0–71 Ash    
14H-1, 0–82 Ash    
14H-2, 25–27 Crack    
15H-3, 15–134 Ash    
15H-4, 0–55 Suck in High Not measured
15H-CC, 0–24 Suck in High  
16H-1, 0–56 Suck in High  
16H-2, 0–129 Sand   Not measured
16H-3, 0–131 Sand   Not measured
16H-4, 0–128 Sand   Not measured
16H-5, 0–125 Sand   Not measured
16H-6, 0–118 Sand   Not measured
18H-1, 0–18 Sand Slight  
18H-5, 143–148 Ash    
19H-1, 0–10 Crack    
19H-3, 112–123 Crack    
20H-1, 0–58 Extruded on rig floor, disturbed    
20H-2, 75–78 Crack    
20H-2, 133–139 Ash    
20H-3, 45–48 Ash patches    
20H-5, 0–59 Soupy ash   Not measured
21H-1, 0–20 Fall-in    
21H-2, 135–149 Ash    
21H-3, 0–13 Ash    
21H-3, 80–101 Sand    
21H-7, 48–79 Disturbed    
22H-1, 0–10 Fall-in    
22H-3, 52–57 Crack    
22H-6, 54–62 Crack    
22H-7, 53–69 Ash    
23H-1, 0–15 Fall-in    
23H-4, 95–150 Sand-mixed    
24H-1, 50–141 Sand    

Previous   |    Close   |    Next   |    Top of page