Table T3. List of tephra in cores, Hole 1151C.
Number
Core, section,
interval (cm)
Depth (mbsf)
Identification
Color
Grain size
Appearance
Lower boundary
Upper boundary
Comments
Top
Bottom

186-1151C-








1 1H-2, 10.0-10.2 1.60 1.60 Pumice Light gray Granule Grain


2 1H-2, 18.0-19.0 1.68 1.69 Pumice Light gray Pebble Grains

Rounded
3 1H-2, 32.0-33.0 1.82 1.83 Pumice Light gray Pebble Grain

Rounded
4 1H-2, 39.0-39.5 1.89 1.90 Pumice Light gray Pebble Grain

Rounded
5 2H-1, 100.0-101.0 3.20 3.21 Pumice Light gray Pebble Grain

Subrounded
6 2H-1, 137.0-138.0 3.57 3.58 Pumice Light gray Granule Grains


7 2H-3, 40.0-40.5 5.60 5.61 Pumice Light gray Granule Grains

Rounded
8 2H-3, 115.0-115.5 6.35 6.36 Pumice Light gray Granule Grain

Rounded
9 2H-5, 14.0-18.0 8.34 8.38 Tephra Greenish white Fine Diffuse layer Diffuse Diffuse With gray silt
10 2H-5, 20.0-20.5 8.40 8.40 Bioturbated ash White Fine Patch


11 2H-6, 115.0-115.5 10.85 10.85 Pumice Light gray Granule Grain


12 2H-7, 31.0-34.0 11.51 11.54 Bioturbated ash Gray Silt Thin patches

With black and white grains
13 3H-1, 40.0-44.0 12.10 12.14 Tephra Gray Very fine Layer Sharp Inclined Slightly lightening
14 3H-3, 110.0-120.0 15.80 15.90 Bioturbated ash White Very fine Small patches


15 3H-3, 111.0-111.5 15.81 15.81 Pumice White Granule Grain

Rounded
16 3H-4, 111.0-112.0 17.31 17.32 Bioturbated ash Light gray Silt Patches

Flat
17 4H-3, 86.0-90.0 25.07 25.11 Rework Dark gray Sand Layer Sharp Diffuse With sand
18 4H-3, 92.0-99.0 25.13 25.20 Rework Gray Coarse Layer Sharp Gradational Light gray in top and bottom, with sand
19 4H-4, 38.0-39.0 26.11 26.12 Bioturbated ash Light gray Very fine Diffuse patches


20 4H-6, 137.0-140.0 30.14 30.17 Bioturbated ash Light gray Sand Patches

With white and black grains
21 4H-7, 30.0-31.0 30.57 30.58 Bioturbated ash White Very fine Patch


22 5H-1, 142.0-150.0 32.12 32.20 Tephra Light gray Silt Layer Wavy erosional base Diffuse Lightening upward
23 5H-3, 75.0-78.0 34.45 34.48 Bioturbated ash White Silt Small patches


24 5H-4, 42.0-56.0 35.62 35.76 Tephra Light gray Fine Layer Scoured Diffuse
25 5H-4, 78.0-79.0 35.98 35.99 Pumice Light gray Granule Grain

Rounded
26 5H-4, 144.0-147.0 36.64 36.67 Bioturbated ash White Fine Diffuse patch


27 5H-5, 7.0-8.0 36.77 36.78 Bioturbated ash White Fine Patch


28 5H-7, 16.0-17.0 39.56 39.57 Bioturbated ash Bright white Very fine Diffuse patch

Flat
29 5H-CC, 11.0-14.0 40.34 40.37 Bioturbated ash Greenish light gray Diffuse patch



30 6H-2, 24.0-24.5 41.94 41.95 Pumice Light gray Granule Grain

Rounded
31 6H-2, 63.0-63.5 42.33 42.34 Pumice Light gray Granule Grain

Rounded
32 6H-3, 64.0-72.0 43.84 43.92 Tephra White Coarse Layer Sharp Gradational Grain in lower part
33 6H-5, 25.0-25.3 46.45 46.45 Rework Gray
Thin layer


34 6H-5, 30.0-30.3 46.50 46.50 Rework Gray
Thin layer


35 6H-5, 57.0-62.0 46.77 46.82 Bioturbated ash White Fine Diffuse patches


36 6H-6, 48.0-48.2 48.18 48.18 Pumice Light gray Granule Grain

Rounded
37 6H-6, 64.0-70.0 48.34 48.40 Bioturbated ash White
Mottled patches


38 7H-1, 124.0-129.0 50.94 50.99 Tephra White Fine Layer Diffuse Diffuse
39 7H-3, 38.0-44.0 53.08 53.14 Bioturbated ash White Fine Mottled


40 7H-4, 80.0-84.0 55.00 55.04 Tephra Greenish gray Fine Sharp Diffuse

41 7H-4, 116.0-124.0 55.36 55.44 Bioturbated ash White
Mottled


42 7H-5, 25.0-26.2 55.95 55.96 Pumice
Pebble Grain

Rounded
43 7H-5, 70.0-72.0 56.40 56.42 Tephra White Fine Layer Diffuse Diffuse
44 7H-5, 124.0-126.0 56.94 56.96 Bioturbated ash White
Mottled


45 7H-CC, 6.0-8.0 59.37 59.39 Pumice
Pebble Grains

Subrounded, with silt
46 8H-1, 19.0-21.0 59.39 59.41 Bioturbated ash White Fine Mottled and scattered


47 8H-2, 115.0-130.0 61.85 62.00 Pumice White, gray Granule Scattering

Rounded to subrounded, disturbed by coring
48 8H-3, 68.0-70.0 62.88 62.90 Bioturbated ash White Fine Patches


49 8H-4, 82.0-85.0 64.52 64.55 Tephra White Coarse-fine Layer Sharp, coarse Diffuse White ash scattered below layer
50 8H-5, 59.0-69.0 65.79 65.89 Bioturbated ash White Fine Small patches


51 8H-7, 18.0-22.0 68.38 68.42 Tephra Dark gray-greenish white Sand-fine Sharp Very diffuse

52 8H-7, 40.0-42.0 68.60 68.62 Bioturbated ash Bright white
Patches


53 8H-7, 19.0-80.0 68.39 69.00 Tephra White, light gray Layer Sharp Diffuse

54 8H-CC, 18.0-24.0 69.21 69.27 Rework Gray Silt Layer Sharp Gradational Homogenous in color
55 9H-1, 5.0-16.0 68.75 68.86 Tephra Dark gray-white Coarse to fine Layer Inclined Diffuse
56 9H-1, 137.0-140.0 70.07 70.10 Bioturbated ash Gray Silt Patch


57 9H-2, 104.0-110.0 71.24 71.30 Bioturbated ash White Silt Patches


58 9H-3, 14.0-19.0 71.84 71.89 Tephra
Sand Layer Sharp Gradational
59 9H-4, 27.0-29.0 73.47 73.49 Bioturbated ash White
Small diffuse patches


60 9H-4, 138.0-142.0 74.58 74.62 Bioturbated ash Black and white Patches



61 9H-4, 146.0-146.2 74.66 74.66 Pumice
Granule Grain


62 9H-5, 140.0-150.0 76.10 76.20 Tephra Blight white
Layer Sharp Diffuse Some mottling below layer
63 9H-6, 76.0-78.0 76.96 76.98 Bioturbated ash White
Diffuse patch


64 9H-6, 81.0-84.0 77.01 77.04 Bioturbated ash White
Patch


65 9H-6, 98.0-99.0 77.18 77.19 Pumice
Pebble Grain


66 10H-1, 27.0-28.0 78.47 78.48 Bioturbated ash Light gray
Patches


67 10H-1, 55.0-57.0 78.75 78.77 Pumice
Granule Grains


68 10H-1, 119.0-123.0 79.39 79.43 Tephra White Very fine Layer Sharp Irregular With prefall ash
69 10H-1, 133.0-137.0 79.53 79.57 Tephra White Very fine Layer Sharp Irregular
70 10H-2, 27.0-47.0 79.97 80.17 Pumice Gray Granule Scattering


71 10H-4, 15.0-18.0 82.85 82.88 Tephra Light gray Fine Layer Sharp Irregular With prefall, and patch above
72 10H-4, 117.0-120.0 83.87 83.90 Tephra Light gray-gray Fine-coarse Layer Sharp Sharp With very fine light gray base part
73 10H-5, 68.0-70.0 84.88 84.90 Rework Light gray-gray Fine Layer Irregular Irregular With sand
74 10H-6, 15.0-17.0 85.85 85.87 Pumice Light gray Granule Grains


75 10H-6, 87.0-88.0 86.57 86.58 Pumice Gray Pebble Grain

Subrounded
76 10H-6, 133.0-136.0 87.03 87.06 Pumice Gray Granule and pebble Grains

Subangular
77 10H-7, 21.0-21.5 87.41 87.42 Pumice Gray Granule Grain

Subrounded
78 10H-7, 29.0-35.0 87.49 87.55 Pumice Light gray-gray Granule Scattered layer


79 10H-CC, 8.0-19.0 88.17 88.28 Bioturbated ash Light gray Very fine Small patches


80 10H-CC, 24.0-26.0 88.33 88.35 Pumice Light gray Pebble and granule Grains


81 11H-2, 34.0-35.0 89.54 89.55 Pumice Light gray Granule Grain


82 11H-2, 46.0-50.0 89.66 89.70 Bioturbated ash Light gray Fine Patches


83 11H-3, 38.0-38.5 91.08 91.09 Pumice Gray Granule Grain

Rounded
84 11H-3, 76.0-80.0 91.46 91.50 Pumice Light gray Granule Scattered layer

Subrounded, with green small patch
85 11H-4, 134.0-135.0 93.54 93.55 Pumice Gray Granule Grain

Subrounded
86 11H-5, 13.0-13.3 93.83 93.83 Pumice Gray Granule Grain

Rounded
87 11H-5, 21.0-22.0 93.91 93.92 Pumice Gray Granule Grains

Rounded
88 11H-5, 44.0-44.5 94.14 94.14 Bioturbated ash Yellowish gray Fine Patch


89 11H-5, 46.0-53.0 94.16 94.23 Tephra White-light gray Very fine-fine Layer Sharp Irregular With two parts
90 11H-5, 53.0-55.0 94.23 94.25 Rework Dark-light gray Fine-medium Layer Sharp Grading
91 11H-5, 60.0-60.5 94.30 94.31 Pumice Gray Pebble Grain

Angular
92 11H-5, 64.0-70.0 94.34 94.40 Bioturbated ash Light gray Fine Patch

With glauconitic patch
93 11H-5, 80.0-80.5 94.50 94.51 Pumice Gray Granule Grain


94 11H-6, 11.0-15.0 95.31 95.35 Bioturbated ash Light gray
Patch


95 11H-6, 20.0-24.0 95.40 95.44 Rework Light-brownish and white Fine Layer Erosional base Irregular Two parts
96 11H-6, 62.0-64.0 95.82 95.84 Bioturbated ash Light gray Very fine Patch


97 11H-6, 117.0-119.0 96.37 96.39 Bioturbated ash Light gray Fine Patch