Table T14. Inclination-only averages for lithologic units, Hole U1373A.
|
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
|
||||||||||||||
| IA | — | NA | Sediment | 0.00 | 0.15 | ||||||||||
| IB | — | NA | Sediment | 0.15 | 2.66 | 41† | 1 | –46.2 | |||||||
| IC | — | NA | Sediments | 2.66 | 3.05 | 6 | 13.5 | 14.2 | 25.4 | 21.9 | 1 | 29.4 | |||
| II | 1 | NA | Volcanic breccia | 9.60 | 10.98 | 43 | 26.6 | 29.7 | 32.7 | 9.5 | |||||
| II | 2 | NA | Volcanic breccia | 10.98 | 11.42 | 12 | –17.4 | –18.0 | 16.8 | 9.2 | |||||
| II | 3 | NA | Volcanic breccia | 11.42 | 14.17 | 64 | 7.0 | 7.3 | 21.9 | 5.0 | 2 | 20.4 | 20.7 | 13.3 | 42.1 |
| II | 4 | NA | Volcanic breccia | 14.17 | 15.27 | 21 | –6.2 | –22.7 | 78.3 | 154.2 | 1 | –12.3 | |||
| II | 5 | NA | Volcanic breccia | 15.27 | 15.70 | 11 | –20.7 | –24.1 | 37.7 | 23.4 | |||||
| IIIA | — | NA | Sediment | 15.70 | 17.07 | 23 | 11.4 | 12.5 | 33.9 | 13.7 | |||||
| IIIB | — | NA | Sediment | 17.07 | 19.84 | 10 | 15.9 | 17.9 | 34.7 | 22.5 | 3 | 15.4 | 17.9 | 36.6 | 61.8 |
| IIIC | — | NA | Sediment | 23.80 | 29.17 | 6 | –15.0 | –16.2 | 26.5 | 23.0 | 3 | –15.3 | –16.5 | 26.5 | 42.6 |
| IIID | — | NA | Sediment | 29.17 | 33.90 | 6 | –58.6 | –60.7 | 15.7 | 13.2 | 3 | –57.7 | –64.2 | 24.6 | 39.2 |
| IV | 6 | 3 | Massive lava flow | 33.91 | 36.39 | 49 | –65.1 | –65.7 | 7.5 | 1.9 | 5 | –64.5 | –64.7 | 5.3 | 5.0 |
| IV | 7 | 3 | Pillow lava | 36.39 | 36.66 | 2 | –55.4 | –63.2 | 27.5 | 98.5 | |||||
| V | 8 | 3 | Pillow lava | 36.66 | 36.90 | 7 | –55.7 | –55.7 | 1.8 | 1.4 | 1 | –55.7 | |||
| V | 9 | 3 | Lava flow | 36.90 | 37.53 | 20 | –57.9 | –58.1 | 5.4 | 2.2 | 2 | –56.7 | –56.7 | 2.0 | 6.1 |
| V | 10 | 3 | Peperite | 37.53 | 38.14 | 11 | –45.5 | –46.0 | 10.8 | 6.1 | 3 | –44.8 | –45.3 | 10.3 | 15.9 |
| VI | 11 | 3 | Peperite | 38.14 | 39.05 | 47 | –44.6 | –45.7 | 15.6 | 4.1 | 5 | –44.3 | –44.5 | 7.2 | 6.8 |
| VI | 12 | 3 | Lava flow with peperite top and base | 39.05 | 41.02 | 33 | –39.4 | –40.0 | 12.5 | 3.9 | 6 | –35.1 | –35.6 | 12.0 | 10.1 |
| VI | 13 | 3 | Peperitic lava flow | 41.02 | 43.31 | 62 | –40.3 | –40.4 | 6.4 | 1.4 | 3 | –40.0 | –40.0 | 2.4 | 3.7 |
| VII | 14 | 3 | Peperitic lava flow | 43.31 | 43.98 | 8 | –33.4 | –33.8 | 11.9 | 8.2 | 2 | –31.5 | –31.8 | 10.6 | 33.4 |
| VII | 15 | 3 | Lava flow with peperite top | 43.98 | 66.17 | 89(94)* | –55.5 | –59.5 | 21.8 | 4.2 | 21(24)* | –53.4 | –55.0 | 12.8 | 6.3 |
* = no solution possible with initial distribution (initial n in parentheses); results are reported for dominant polarity. † = no solution possible. — = 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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