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Table T25. Downhole distribution of breccia types.

Core, section,
interval (cm)
Piece Depth
(mbsf)
Breccia type Comments
Incipient
brecciation
Hyaloclastite Hydrothermal
breccia
309-1256D-
78R-3, 11–28 2, 3 766.00 X      
80R-1, 4–10 2 779.29 X      
82R-1, 77–87 13 792.96 X      
83R-2, 16–21 15 800.68 X      
90R-1, 5–10 2 859.49   X    
91R-1, 48–63 12, 15 864.56 X      
100R-1, 12–24 3, 4 917.18 X      
101R-1, 70–80 11 917.67 X      
108R-1, 0–8 1, 2 958.80 X      
108R-2, 4–30 2–6 960.03 X      
113R-1, 13–35 3–8 984.14   X    
114R-1, 124–126 14 989.89   X    
117R-1, 132–142 13, 14 1004.40 X     Near cataclastic zone
119R-1, 4–7 2 1012.86 X      
122R-1, 25–147 7–19 1027.50   X    
122R-2, 0–29 1–3 1028.66   X    
122R-2, 61–85 9, 11 1029.14     X  
128R-1, 46–77 7, 11 1056.47       In rubble
135R-1, 101–130 10–13 1090.73   X   Top Unit 1256D-45
136R-1, 18–43 5, 7 1094.74   X    
137R-1, 84–105 13, 14, 15 1100.06   X   Bottom Unit 1256D-45
140R-1, 27–63 5 1114.44   X   Near igneous contact
161R-1, 67–130 11–21 1210.83   X   Near igneous contact
161R-2, 9–54 2–6 1211.56   X   Near igneous contact
163R-1, 113–121 14 1219.23   X   Near igneous contact

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