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Table T15. Inclination-only averages for lithologic units, Hole U1372A.

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 Sandy foraminiferal ooze 0.00 13.50                    
IIA NA Multicolor basalt breccia 13.50 18.00 40 1.1 1.6 46.5 15.3 5 8.2 8.4 16.1 15.5
IIB NA Foraminiferal limestone 18.00 18.34                    
IIC NA Multicolor basalt breccia 18.34 26.26 70 7.5 9.0 42.0 10.0 10 1.1 1.6 39.0 25.8
IID NA Multicolor basalt conglomerate 26.26 39.53 172**         6 29.6 38.2 43.6 41.2
IIE NA Bluish-gray basalt conglomerate 39.53 45.57 55**         4**        
III 1 3 Lava flow with peperitic top 45.57 46.75 47 –66.5 –67.5 9.7 2.5 1 –67.3      
III 2 3 Lava flow with scoriaceous top 46.75 48.07 42 –65.8 –66.8 9.6 2.6 2 –57.9 –57.9 0.2 0.7
III 3 3 Lava flow with peperitic top 48.07 49.07 17 –57.8 –58.0 4.3 1.9          
III 4 3 Lava flow with peperitic top 49.07 52.94 79 –65.1 –66.2 10.6 2.1 6 –64.0 –64.3 5.7 4.8
III 5 3 Lava flow with peperitic top 52.94 54.02 16 –68.2 –68.6 6.1 2.8 2 –67.9 –68.2 4.8 15.0
IV 6 3 Lava flow with peperitic top 54.02 63.73 130(141) –64.3 –69.5 19.0 3.0 23 –58.9 –90.0 35.9 14.7
V 7 3 Lava flow 63.73 65.21 7 –66.7 –67.1 6.6 4.9 4 –70.2 –71.4 9.4 10.7
V 8 3 Lava flow with scoriaceous top 65.21 67.47 34 –44.6 –49.1 27.8 8.9 6 –41.1 –45.2 27.8 24.2
V 9 3 Lava flow with scoriaceous top 67.47 69.67 42(46) –49.8 –56.0 28.4 8.2 3**        
V 10N* 3 Lava flow with scoriaceous top 69.67 72.81 24 –63.4 –65.0 12.5 4.6 4 –62.6 –63.4 9.2 10.6
V 10R* 3 Lava flow with scoriaceous top 69.67 72.81 34 61.3 61.9 8.9 2.7 2 63.3 63.5 5.2 16.1
VI 11 3 Lava flow with scoriaceous top 72.81 78.93 25 –37.0 –49.8 43.0 17.6 5 –52.1 –53.9 16.6 16.0
VI 12 3 Lava flow with scoriaceous top 78.93 79.96 10 –47.3 –48.3 13.9 8.4 2 –36.7 –38.2 20.4 67.7
VI 13 3 Lava flow 80.50 83.08 45 –59.1 –61.8 17.5 4.7 3 –64.8 –66.5 12.6 19.5
VI 14 3 Lava flow 83.08 84.53 4 –46.7 –46.7 1.0 1.1 1 –46.8      
VI 15 3 Lava flow 84.53 85.97 19 –50.8 –51.3 9.0 3.7 3 –46.3 –46.6 8.4 12.9
VI 16 3 Scoriaceous top to Unit 18 90.10 92.43 2 –49.7 –49.7 3.9 12.0 1 –49.7      
VI 17 0 Lava flow 92.43 92.62                    
VI 18 3 Scoriaceous top to Unit 20 92.62 92.74                    
VI 19 0 Lava flow 92.74 93.18 8 –61.5 –61.8 6.2 4.2 1 –61.7      
VI 20 3 Lava flow? 93.18 96.13 3 –59.1 –59.4 6.3 9.6 1 –59.2      
VII 21 1 Breccia 96.13 100.96 17 –35.5 –62.3 53.7 29.9 4 –29.6 –41.5 47.2 63.2
VII 22 0 Lava flow 100.96 101.32 1 –74.4       1 –74.4      
VII 23 3 Breccia 101.32 102.68 30 –60.2 –60.4 5.1 1.7 3 –59.6 –59.7 3.3 5.0
VIII 24 0 Lava flow 102.68 102.81 5 –64.5 –65.6 10.3 9.8          
VIII 25 3 Lava flow (?pillow fragments) 102.81 119.46 85(89)†‡ –83.1       10**        
IX 26 1 Hyaloclastite breccia 119.46 120.26                    
IX 27 NA Lava flow (?pillow fragments) 120.26 121.49 2 –65.3 –65.9 7.9 24.6 2 –65.3 –65.9 7.9 24.6
X 28 2 Hyaloclastite breccia 121.49 128.92 36**         9**        
XI 29 NA Lava flow (?pillow fragments) 128.92 129.06 3 –61.9 –71.6 26.2 42.0 1 –62.3      
XI 30 1 Hyaloclastite breccia 129.06 129.61 18 55.1 55.2 5.1 2.2 1 55.3      
XI 31 NA Lava flow (?pillow fragments) 129.61 129.75                    
XI 32 0 Lava flow (?pillow fragments) 129.75 129.84                    
XI 33 0 Lava flow (?pillow fragments) 129.84 129.90                    
XI 34 0 Hyaloclastite breccia 129.90 129.99                    
XI 35 NA Lava flow (?pillow fragments) 129.99 130.03                    
XI 36 0 Hyaloclastite breccia 130.03 130.10                    
XI 37 NA Lava flow (?pillow fragments) 130.10 130.11                    
XI 38 0 Hyaloclastite breccia 130.11 130.17                    
XI 39 NA Lava flow (?pillow fragments) 130.17 130.26                    
XI 40 1 Lava flow (?pillow fragments) 130.26 130.95 5 0.6 0.6 1.2 1.2 1 0.6      
XI 41 0 Lava flow (?pillow fragments) 130.95 130.99                    
XI 42 1 Lava flow (?pillow fragments) 130.99 131.32 5 30.6 30.6 3.1 2.9 1 30.6      
XI 43 0 Lava flow (?pillow fragments) 131.32 131.47                    
XI 44 NA Hyaloclastite breccia 131.47 131.59                    
XI 45 0 Lava flow (?pillow fragments) 131.59 131.80                    
XII 46 NA Hyaloclastite breccia 131.80 138.26 13 0.0 0.0 0.3 0.2 1 –0.3      
XII 47 NA Vitric-lithic volcanic sand and gravel 138.26 141.54 18 –63.7 –64.8 10.6 4.6 4**        
XIII 48 NA Hyaloclastite breccia 141.54 142.25 2 –7.4 –7.4 0.6 2.0          
XIII 49 0 Lava flow (?pillow fragments) 143.00 143.26                    
XIII 50 NA Hyaloclastite breccia 143.26 143.33                    
XIII 51 1 Lava flow (?pillow fragments) 143.33 145.54 6 –54.2 –55.2 12.2 10.2 3 –51.0 –51.8 11.8 18.2
XIII 52 NA Hyaloclastite breccia 145.54 145.67                    
XIV 53 1 Lava flow (?pillow fragments) 145.67 146.56                    
XIV 54 NA Hyaloclastite breccia 146.56 146.76                    
XIV 55 2 Lava flow (?pillow fragments) 146.76 148.10 2 –43.8 –44.0 6.9 21.6 1 –43.8      
XIV 56 NA Hyaloclastite breccia 148.10 148.50                    
XIV 57 1 Lava flow (?pillow fragments) 148.50 149.28                    
XIV 58 0 Lava flow (?pillow fragments) 149.28 149.34                    
XIV 59 NA Hyaloclastite breccia 149.34 150.09 1 –85.0       1 –85.0      
XIV 60 1 Lava flow (?pillow fragments) 150.09 151.78 7 –64.7 –65.0 6.0 4.5 2 –61.4 –61.8 6.5 20.3
XIV 61 NA Hyaloclastite breccia 156.20 171.32 8**         2**        
XIV 62 2 Lava flow (?pillow fragments) 171.32 172.71 16 –49.7 –51.8 18.0 8.4 4 –42.2 –45.6 25.5 30.3
XIV 63 NA Hyaloclastite breccia 172.71 173.23 5 –56.5 –56.6 3.2 3.0 2 –55.7 –55.7 2.1 6.3
XIV 64 NA Vitric-lithic volcanic sand 173.23 173.39                    
XV 65 NA Hyaloclastite breccia 173.39 180.81 26 –7.2 –7.4 30.1 11.2 5 5.4 6.2 32.3 32.7
XV 66 1 Lava flow (?pillow fragments) 180.81 181.22 8 –0.2 –0.2 2.0 1.4 2 –0.5 –0.5 1.6 4.8
XV 67 NA Hyaloclastite breccia 180.20 180.46                    
XV 68 0 Lava flow (?pillow fragments) 180.46 180.64 1 –30.7       1 –30.7      
XV 69 NA Hyaloclastite breccia 180.64 193.06 83 5.7 1.4 34.3 7.1 22 –0.4 –0.3 32.8 13.5
XV 70 NA Vitric-lithic volcanic sand and gravel 194.60 194.89                    
XVI 71 2 Lava flow (?pillow fragments) 194.89 196.28 8**         4**        
XVI 72 NA Hyaloclastite breccia 196.28 196.65                    
XVI 73 0 Lava flow (?pillow fragments) 196.65 204.53 1 –64.1       1 –64.1      
XVI 74 NA Hyaloclastite breccia 204.53 214.88 5**         3 –35.4 –59.3 58.6 135.8
XVI 75 1 Lava flow (?pillow fragments) 214.88 215.16 2 –64.2 –64.3 3.0 9.2 1 –64.4      
XVI 76 NA Hyaloclastite breccia 215.16 215.30                    
XVI 77 1 Lava flow (?pillow fragments) 215.30 215.68                    
XVI 78 NA Hyaloclastite breccia 215.68 216.07                    
XVI 79 1 Lava flow (?pillow fragments) 218.60 218.99 1 –51.9       1 –51.9      
XVI 80 NA Hyaloclastite breccia 218.99 228.35                    
XVII 81 3 Lava flow 228.35 232.60 33 –67.7 –68.8 9.9 3.1 8 –68.1 –70.0 12.3 8.5

* = no solution for initial distribution; results split into normal (N) and reversed (R) polarity groups. † = no solution possible with initial distribution (initial n in parentheses); results are reported for dominant polarity. ‡ = inclination consistently steep but did not converge. ** = no solution possible. — = no lithologic unit. ISCI = in situ confidence index (see “Igneous petrology and volcanology” in the “Methods” chapter [Expedition 330 Scientists, 2012]). 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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