Table T6. Volcanic ash layers recovered at Site 1148.
Core, section, interval (cm) | Top | Bottom | Thickness (cm) | Remarks/comments | |||
---|---|---|---|---|---|---|---|
Depth (mbsf) |
Depth (mcd) |
Depth (mbsf) |
Depth (mcd) |
||||
184-1148A- | |||||||
2H-6, 41 | 8.71 | 13.56 | <1 | Light gray volcanic ash as burrow fill | |||
3H-4, 78-81 | 15.51 | 20.36 | 15.54 | 20.39 | 3 | Black pumice lump, 4 cm long | |
4H-2, 86-89 | 22.16 | 27.01 | 22.19 | 27.04 | 3 | Light gray ash layer, mottles and burrows with ash between 79 and 92 cm | |
4H-3, 71 | 23.51 | 28.36 | <1 | Small burrow filled with beige ash | |||
4H-6, 86-90 | 28.16 | 33.01 | 28.20 | 33.05 | 4 | Black volcanic ash, overlain by a turbidite | |
6H-2, 86-91 | 41.16 | 46.96 | 41.21 | 47.01 | 5 | Beige ash in burrows | |
6H-2, 129-133 | 41.59 | 47.39 | 41.63 | 47.43 | 4 | Beige ash in burrows | |
11H-2, 133-136 | 89.13 | 97.85 | 89.16 | 97.88 | 3 | Medium gray volcanic ash layer with green clay at the bottom | |
12H-4, 39-44 | 100.69 | 110.36 | 100.74 | 110.41 | 5 | Bioturbated dark gray ash layer and ash in burrows | |
18X-2, 46-48 | 154.86 | 167.08 | 154.88 | 167.10 | 2 | Medium gray ash with green clay mottles above and below | |
33X-3, 115-120 | 301.45 | 313.67 | 301.50 | 313.72 | 5 | Dispersed ash in greenish gray reduction zone (low magnetic susceptibility) | |
33X-5, 95-101 | 304.25 | 316.47 | 304.31 | 316.53 | 6 | Black ash layer in greenish gray reduction zone (low magnetic susceptibility) | |
184-1148B- | |||||||
3H-1, 77-81 | 18.37 | 19.22 | 18.41 | 19.26 | 4 | Light gray ash layer with small ash-filled burrows below | |
5H-3, 137-138 | 44.97 | 44.62 | 44.98 | 44.63 | 1 | Pumice clast | |
5H-5, 76-77 | 47.36 | 47.01 | 47.37 | 47.02 | 1 | Light gray ash layer | |
5H-5, 89-89 | 47.49 | 47.14 | <1 | Burrow filled with light gray ash | |||
6H-5, 94-100 | 57.04 | 57.39 | 57.10 | 57.45 | 6 | Dispersed volcanic ash | |
10H-5, 135-138 | 95.45 | 97.77 | 95.48 | 97.80 | 3 | Medium gray volcanic ash layer with sharp base and gradational upper contact |