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Table T17. Summary of inclination-only averages for lithologic units, Hole U1374A.

Strat.
unit 		Lith.
unit 		ISCI Lithology Lith. unit depth (mbsf) Averages from 2 cm archive-half core data Averages from Fisher piece averages
n Inclination (°) α63 α95 n Inclination (°) α63 α95
Arithmetic
mean 		Maximum
likelihood 		Arithmetic
mean 		Maximum
likelihood
Top Bottom
I — NA Sediment 0.00 6.64                    
IIA — NA Sediment 6.64 13.59 25 34.3 54.7 52.5 23.4 10 34.8 57.5 53.8 40.3
IIB — NA Sediment 13.59 13.78 3 13.8 13.9 9.8 15.0 1 13.9      
IIC — NA Sediment 13.78 15.05 21†         3†        
IID — NA Sediment 15.05 15.31 1 –23.4       1 –23.4      
IIE — NA Sediment 15.31 16.72 11 6.6 35.9 12.8 7.3 5 10.3 10.5 17.8 17.2
III 1 3 Lava flow 16.72 18.04 9†         1 63.1      
IV 2 3 Lava flow 20.40 29.69 130†         18(20)* 49.1 50.5 15.9 6.9
V 3 NA Volcanic breccia 29.69 33.98 21 45.5 54.5 33.9 14.4 4 36.2 42.4 35.4 43.8
VI 4 3 Lava flow 34.20 37.45 49 60.7 65.0 20.2 5.2 6 56.5 58.8 17.3 14.6
VI 5 NA Volcanic breccia 37.45 37.60           1 78.2      
VIIA 6 NA Lithic-vitric volcanic sand 37.60 38.79 13 46.7 47.2 9.3 4.8 4 45.2 45.5 8.4 9.6
VIIB 7 NA Lithic-vitric volcanic sand 38.79 41.48 35 48.0 48.1 5.9 1.8 9 46.8 47.0 6.4 4.1
VIIC 7b NA Volcanic breccia with sand and bioclast matrix 41.48 41.84 2†                  
VIII 8 NA Volcanic breccia 41.84 63.67 318†         49†        
IXA — NA Sedimentary breccia 63.67 74.78 37 –23.3 –33.8 52.3 18.9 3 –21.0 –22.1 25.7 41.0
IXB — NA Sedimentary breccia 74.78 78.20 20†         4 27.0 71.8 70.5 154.2
IXC — NA Sedimentary breccia 78.20 84.70 10†         2†        
X 9 3 Lava lobe 84.70 87.41 4 –54.3 –54.3 1.6 1.8 2 –54.3 –54.3 0.4 1.3
X 10 NA Volcanic breccia 87.20 94.25 3 –47.5 –47.5 2.8 4.3 2 –48.1 –48.1 2.2 6.8
X 11 2 Lava lobe 94.25 95.40 1 –52.4       1 –52.4      
X 12 NA Volcanic breccia 95.40 107.82 49 –54.6 –56.7 17.6 4.5 17 –55.4 –57.9 18.2 8.2
X 13 1 Lava lobe 107.82 108.92                    
X 14 NA Volcanic breccia 108.92 109.86                    
XIA — NA Sedimentary conglomerate/breccia 109.87 110.28 2 –44.6 –44.6 1.4 4.4          
XIB — NA Sedimentary conglomerate/breccia 110.28 116.45 17 47.5 55.9 34.9 16.7 4†        
XII 15 NA Volcanic peperitic breccia 116.45 119.16 77(84)* –76.6 –80.1 11.2 2.3 4†        
XII 16 1 Lava lobe 119.16 121.24 7 –70.6 –70.7 2.6 2.0 1 –70.6      
XII 17 NA Volcanic breccia 121.24 121.50 4 –75.9 –76.9 7.1 8.1          
XII 18 1 Lava flow or fragment 121.50 121.83 11 –73.4 –74.0 6.2 3.5 1 –74.5      
XII 19 NA Volcanic breccia 121.83 124.31 34†         3†        
XII 20 1 Lava flow or fragment 124.31 124.65 4 –78.5 –79.2 5.4 6.2 1 –79.9      
XII 21 NA Volcanic breccia 124.65 124.96 3 –10.2 –10.2 0.7 1.0 1 –82.2      
XII 22 0 Lava flow or fragment 124.96 125.16 4 –34.0 –35.0 17.3 20.0          
XII 23 NA Volcanic breccia 125.16 126.58 9 –55.0 –58.8 21.8 14.3 4 –52.2 –65.8 36.3 45.0
XII 24 0 Lava flow or fragment 126.58 126.75                    
XII 25 NA Volcanic breccia 126.75 127.52 5 –73.7 –75.0 8.4 8.0 1 –75.7      
XII 26 1 Lava flow or fragment 127.52 127.73 7 –81.4 –81.6 2.8 2.1          
XII 27 NA Volcanic breccia 127.73 127.86 4 –79.1 –81.2 8.3 9.5          
XII 28 1 Lava flow or fragment 127.86 128.22 5 –74.8 –76.0 7.9 7.5 1 –79.3      
XII 29 NA Volcanic breccia 128.22 128.95 19†         4†        
XII 30 0 Lava flow or fragment 128.95 129.20 7 –60.6 –60.8 5.0 3.7 1 –60.8      
XII 31 NA Volcanic breccia 129.20 146.06 250†         25†        
XIII 32 NA Volcanic breccia with sandy matrix 146.06 147.18 11†                  
XIII 33 NA Volcanic breccia 147.18 147.84 15 –69.7 –78.2 19.8 9.6 1 –78.9      
XIII 34 0 Lava fragment 147.84 147.97 3 –62.4 –62.8 6.6 10.2          
XIII 35 NA Volcanic breccia 147.97 148.42 5 –73.5 –75.7 10.6 10.2 2 –78.1 –78.1 0.7 2.2
XIII 36 0 Lava fragment 148.42 148.62 6 –63.2 –64.1 10.3 8.6          
XIII 37 NA Volcanic breccia 148.62 149.39 11†         2†        
XIII 38 0 Lava fragment 149.39 149.65 3†                  
XIII 39 NA Volcanic breccia 149.65 153.97 76(79)* –60.0 –73.4 29.0 6.2 9(10)* –61.0 –62.9 14.6 9.4
XIII 40 1 Lava fragment 153.97 154.68 1 –75.1       1 –83.6      
XIII 41 NA Volcanic breccia 154.68 155.03                    
XIII 42 1 Lava fragment 155.03 155.47 10 –80.7 –81.3 4.6 2.7 2 –78.1 –78.4 4.2 13.1
XIII 43 NA Volcanic breccia 155.47 155.57 3 –80.8 –80.8 0.6 1.0          
XIII 44 0 Lava fragment 155.57 155.77 8 –72.8 –75.8 12.6 8.7          
XIII 45 NA Volcanic breccia 155.77 155.88 3 –76.4 –76.5 0.8 1.2          
XIII 46 1 Lava lobe 155.88 156.35 12 –79.2 –79.9 5.2 2.8 1 –83.2      
XIII 47 NA Volcanic breccia 156.35 158.11 18†         2 –70.6 –82.8 22.2 74.8
XIII 48 NA Volcanic breccia 158.11 159.12 12 –0.2 –0.2 5.7 3.1 4 0.4 0.4 6.1 6.9
XIII 49 1 Lava fragment 159.12 159.65 6 –1.2 –1.2 1.4 1.2 1 –0.9      
XIII 50 NA Volcanic breccia 159.65 163.76 25†         1 –0.3      
XIII 51 NA Volcanic breccia 163.76 164.39 28†         1 88.0      
XIII 52 1 Lava lobe fragment 164.39 165.01 9†         1 89.7      
XIII 53 NA Volcanic breccia 165.01 168.35 12 1.3 2.3 26.9 15.1 3 –15.5 –19.8 51.3 100.2
XIII 54 0 Lava lobe fragment 168.35 168.59                    
XIII 55 NA Volcanic breccia with sandy matrix 168.59 169.81                    
XIII 56 1 Lava lobe fragment 169.81 170.64 2 –28.0 –49.2 59.4 154.2 2 –28.0 –49.2 59.4 154.2
XIII 57 NA Volcanic breccia with sandy matrix 170.64 176.59 10†         4†        
XIII 58 2 Lava lobe fragment 176.59 177.90 2 –70.6 –70.6 0.6 1.7 1 –70.7      
XIII 59 NA Volcanic breccia 177.50 180.61 14†         4†        
XIII 60 NA Volcanic breccia 180.61 181.22 14 –73.7 –86.0 18.3 9.2 3 –72.3 –74.1 10.5 16.1
XIII 61 0 Lava fragment 181.22 181.52                    
XIII 62 NA Volcanic breccia 181.52 182.35 1 –41.2       1 –41.2      
XIII 63 1 Lava fragment 182.35 182.84 1 –54.6       1 –54.6      
XIII 64 NA Volcanic breccia 182.84 189.72 28†         4†        
XIII 65 1 Lava lobe 189.72 190.76 5 –72.9 –74.2 8.7 8.2 1 –73.9      
XIII 66 NA Volcanic breccia 190.76 191.97 20 –72.3 –75.0 12.1 4.9 4 –70.4 –72.2 11.2 12.8
XIII 67 2 Lava lobe 191.97 193.13 14 –63.1 –63.7 8.1 4.0 3 –65.5 –66.1 7.8 11.9
XIII 68 NA Volcanic breccia 193.13 193.85 7 80.9 –81.4 4.1 3.1 2 –80.0 –80.2 2.9 9.1
XIII 69 0 Lava fragment 193.85 194.14 2 –73.7 –73.7 0.4 1.3          
XIII 70 NA Volcanic breccia 194.14 196.73 34 –75.3 –87.7 16.9 5.2 5 –72.0 –78.3 17.1 16.5
XIII 71 2 Lava lobe 196.73 198.04 9 –72.9 –73.6 6.8 4.3 2 –77.9 –82.4 11.4 35.9
XIII 72 0 Autobrecciated lava lobe 196.70 197.72 26 –72.9 –73.8 7.6 2.7 3 –73.4 –73.5 2.7 4.2
XIII 73 1 Autobrecciated lava lobe; sandy matrix at top 197.42 199.01 29 –68.3 –70.2 12.1 4.1 3 –69.0 –69.5 6.9 10.5
XIII 74 2 Autobrecciated lava lobe; sandy matrix at top 199.01 201.17 29 –76.5 –77.2 6.0 2.0 4 –78.4 –79.3 6.1 6.9
XIII 75 NA Volcanic breccia 201.17 201.50                    
XIII 76 0 Lava fragment 201.50 202.30                    
XIII 77 NA Volcanic breccia 202.30 204.62 13†         6 –35.7 –80.6 66.4 88.9
XIII 78 2 Lava lobe 204.62 205.55 5 –75.7 –76.3 5.7 5.4 3 –73.6 –73.9 4.0 6.2
XIII 79 NA Volcanic breccia 205.55 217.25 29 –74.1 –84.5 17.7 6.0 11†        
XIII 80 0 Lava lobe or fragment 217.25 218.03 2 –53.1 –53.1 1.1 3.3 2 –59.2 –59.7 8.6 27.0
XIII 81 NA Volcanic breccia 218.03 233.86 32†         12†        
XIII 82 2 Lava lobe 233.86 235.10 16 –72.3 –72.5 4.0 1.9 2 –72.0 –72.0 2.1 6.3
XIII 83 NA Volcanic breccia 235.10 246.54 11(12)* –63.2 –77.1 29.6 17.7 8†        
XIII 84 0 Lava lobe or fragment 246.54 246.94                    
XIII 85 NA Volcanic breccia 246.94 247.65                    
XIII 86 1 Lava lobe or fragment 247.65 248.22                    
XIII 87 NA Volcanic breccia 248.22 256.75 5 –10.9 –10.9 59.1 75.9 4 –17.9 –25.4 64.7 118.2
XIV 88 NA Volcanic breccia 256.75 278.73 14†         5 27.9 –34.7 42.7 45.8
XV 89 NA Volcanic breccia 278.73 287.11 166†         30†        
XV 90 0 Aphyric basalt 287.11 287.31                    
XV 91 NA Volcanic breccia 287.31 290.32 64†         4†        
XVI 92 NA Volcanic breccia with sandy matrix 290.32 291.15 2 –57.5 –74.9 34.9 153.1 1 –22.7      
XVI 93 NA Volcanic breccia 291.15 306.06 169†         33†        
XVI 94 0 Lava fragment 306.06 306.34                    
XVI 95 NA Volcanic breccia 306.34 318.35 29†         7†        
XVI 96 1 Pillow or lava lobe? 318.35 319.14 4 –86.5 –86.8 1.8 2.1 1 –86.8      
XVI 97 NA Volcanic breccia 319.14 326.41 68 –65.8 –66.5 8.4 1.8 10 –63.6 –64.3 8.3 5.0
XVI 98 1 Pillow or lava lobe? 326.41 326.84                    
XVI 99 NA Volcanic breccia 326.84 328.23 3 –48.7 –48.7 1.5 2.3 1 –48.7      
XVI 100 NA Volcanic breccia 328.23 333.25 49†         14†        
XVI 101 1 Pillow or lava lobe? 333.25 333.69                    
XVI 102 NA Volcanic breccia 333.69 336.85 20 –65.8 –66.8 9.7 4.0 5 –62.9 –63.8 9.9 9.4
XVI 103 3 Intrusive sheet 335.90 338.81 61 –75.1 –75.9 6.5 1.5 3 –75.4 –75.5 3.1 4.7
XVI 102b NA Volcanic breccia 337.75 337.92           1 –79.6      
XVI 103b 3 Intrusive sheet 337.92 338.81 42 –75.9 –76.3 4.7 1.3 2 –76.1 –76.3 2.8 8.8
XVI 104 NA Volcaniclastic breccia 338.81 351.66 78†         18†        
XVII 105 NA Volcaniclastic breccia 351.66 365.74 60†         15†        
XVII 106 3 Intrusive sheet 365.74 366.61 37 –76.9 –77.6 5.7 1.7 4†        
XVII 107 NA Volcaniclastic breccia 366.61 375.19 68 –53.9 –71.0 36.3 8.5 12†        
XVIII 108 NA Volcaniclastic breccia 375.19 384.22 190†         18 –76.6 –78.0 8.0 3.4
XVIII 109 1 Lava lobe or fragment 384.22 384.98 23 –72.7 –74.8 11.0 4.2 3 –73.8 –74.0 2.9 4.5
XVIII 110 NA Volcaniclastic breccia 384.98 385.36 16 –81.5 –82.0 4.1 1.9          
XVIII 111 1 Brecciated lava lobe or fragment 385.36 385.80 18 –75.9 –77.3 8.1 3.5          
XVIII 112 1 Lava lobe or fragment (massive base to Unit 111) 385.80 386.54 18 –74.1 –75.1 7.6 3.2 2 –79.8 –79.8 1.2 3.7
XVIII 113 NA Volcaniclastic breccia 386.54 393.11 150†         17†        
XVIII 114 1 Lava lobe or fragment 393.11 393.74 16 –67.6 –79.0 23.4 11.0 1 –52.8      
XVIII 115 NA Volcaniclastic breccia 393.74 396.07 42†         6†        
XVIII 116 3 Intrusive sheet 396.07 397.73 66 –72.9 –78.5 15.0 3.3 3 –72.1 –76.3 14.0 21.7
XVIII 117 NA Volcaniclastic breccia 397.73 402.83 123 –74.9 –80.1 13.6 2.2 18 –75.0 –76.4 8.6 3.7
XVIII 118 3 Lava lobe or fragment 402.83 403.15 11 –75.1 –75.8 6.4 3.6          
XVIII 119 NA Volcaniclastic breccia 403.15 403.88 3‡ 89.2       2†        
XVIII 120 3 Intrusive sheet 403.88 405.40 65 –74.8 –75.9 7.7 1.7 1 –71.3      
XVIII 121 NA Volcaniclastic breccia 405.40 407.99 43 –70.6 –73.2 12.6 3.4 7 –70.8 –72.2 9.6 7.2
XVIII 122 3 Intrusive sheet 407.99 408.35 4 –71.7 –73.0 9.4 10.7 1 –71.9      
XVIII 123 NA Volcaniclastic breccia 408.35 408.91 17 –75.4 –77.6 10.0 4.4 1 –72.3      
XVIII 124 3 Intrusive sheet 408.91 412.74 102†         2 –82.9 –83.0 1.9 6.0
XVIII 125 NA Brecciated margin of intrusive sheet 412.74 413.63 30†         1 –83.7      
XVIII 126 3 Intrusive sheet 413.63 415.89 98†         1 –85.1      
XVIII 127 NA Volcaniclastic breccia 415.89 416.06 7 –80.1 –82.7 8.7 6.5          
XVIII 128 3 Intrusive sheet 416.06 417.35 54 –79.2 –80.4 6.5 1.6 3 –82.2 –82.2 1.2 1.8
XVIII 129 NA Volcaniclastic breccia 417.35 425.66 120(124)* –75.5 –77.6 9.8 1.6 17†        
XVIII 130 1 Brecciated lava lobe or fragment 425.66 426.09 7 –75.3 –75.4 2.6 2.0          
XVIII 131 NA Volcaniclastic breccia 426.09 441.55 258 –74.4 –76.8 10.7 1.2 42 –75.2 –76.3 7.6 2.1
XVIII 132 1 Lava lobe or fragment 441.55 442.01 5 –29.9 –30.2 10.6 10.1 1 –29.9      
XVIII 133 NA Volcaniclastic breccia 442.01 444.16 27†         7†        
XVIII 134 1 Lava lobe or fragment 444.16 445.02 20†         1 82.0      
XIX 135 NA Volcaniclastic breccia 445.02 451.71 59 –71.7 –72.9 9.1 2.1 17 –69.7 –70.7 8.6 3.8
XIX 136 3 Intrusive sheet 451.71 453.53 3 –73.0 –73.0 2.0 3.1 1 –73.0      
XIX 137 NA Volcaniclastic breccia 453.53 470.12 318 –70.4 –71.3 8.3 0.8 37 –68.8 –69.9 9.2 2.7
XIX 138 NA Volcaniclastic breccia 470.12 491.85 397         31†        
XIX 139 3 Intrusive sheet 491.85 494.97 109         5 –82.9 –83.1 2.5 2.4
XIX 140 3 Intrusive sheet 494.97 496.64 12         5†        
XIX 141 NA Volcaniclastic breccia 496.64 498.59 8 –11.6 –12.1 22.1 15.6 4 –6.6 –6.7 21.5 25.1
XIX 142 NA Vitric-lithic volcanic sand and gravel 498.70 503.16 20†         8 –7.1 –16.5 61.2 59.2
XIX 143 NA Volcaniclastic breccia 503.16 507.98 61 –50.3 –63.6 35.5 8.7 20 –48.3 –62.7 37.1 16.4
XIX 144 0 Basalt fragment 507.98 508.30                    
XIX 145 NA Volcaniclastic breccia 508.30 508.48 1 5.5       1 5.5      
XIX 146 3 Lava flow or intrusive sheet? 508.30 515.19 76 –59.3 –59.8 7.4 1.5 7 –59.9 –61.0 11.8 8.9
XIX 147 NA Vitric-lithic volcanic gravel 515.19 518.45 25†         8†        
IX 148 3 Lava flow or intrusive sheet? 518.45 521.81 57 –60.6 –64.8 19.9 4.8 6 –57.2 –59.6 16.8 14.2

* = no solution possible with initial distribution (initial n in parentheses); results are reported for dominant polarity. † = no solution possible. ‡ = inclination consistently steep but did not converge. — = no lithologic unit. ISCI = in situ confidence index (see “Igneous petrology and volcanology” in the “Methods” chapter [Expedition 330 Scientists, 2012a]). NA = not applicable. The method of Arason and Levi (2010) was used to calculate inclination-only mean and associated statistics. α63 = circular standard deviation, α95 = 95% confidence angle.

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