Table T9. Control points used to calculate sedimentation rates at Site 1090.
| Code | Depth range of stratigraphic datums | Age (Ma) |
Sedimentation rate (m/m.y.) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Top | Base | Mean | |||||||||||
| Event/Zone/Chron | Core,
section, interval (cm) |
Depth (mbsf) | Depth (mcd) | Core,
section, interval (cm) |
Depth (mbsf) |
Depth (mcd) |
Depth (mbsf) |
Depth (mcd) |
|||||
| 177- | 177- | ||||||||||||
| DIAT | TOP T. lentiginosa Subzone b | 1090A-1H-CC, 10-15 | 6.97 | 6.97 | 1090E-1H-3, 110-110 | 4.1 | 7.48 | 5.54 | 7.23 | 0.19 | ~24 | ||
| CN | FO E. huxleyi | 1090B-2H-1, 130-130 | 5.50 | 5.50 | 1090B-2H-2, 30-30 | 6.00 | 6.00 | 5.75 | 5.75 | 0.26 | ~24 | ||
| DIAT | BOT T. lentiginosa Subzone b | 1090B-2H-CC, 0-10 | 13.80 | 13.80 | 1090E-2H-2, 70-70 | 10.90 | 14.49 | 12.35 | 14.15 | 0.42 | ~24 | ||
| CN | LO P. lacunosa | 1090B-3H-1, 40-40 | 14.10 | 15.85 | 1090B-3H-1, 130-130 | 15.00 | 16.75 | 14.55 | 16.30 | 0.46 | ~24 | ||
| DIAT | TOP A. ingens Subzone c | 1090D-2H-CC, 9-14 | 15.46 | 17.61 | 1090E-2H-5, 70-70 | 15.40 | 18.99 | 15.43 | 18.30 | 0.65 | ~24 | ||
| PMAG | BOT C1n (Brunhes) | 1090C-3H-4, 120-120 | 18.00 | 24.25 | 1090C-3H-5, 90-90 | 19.20 | 25.54 | 18.60 | 24.89 | 0.78 | ~35 | ||
| CN | LO R. asanoi | 1090B-4H-3, 30-30 | 26.50 | 29.01 | 1090B-4H-3, 130-130 | 27.50 | 30.01 | 27.00 | 29.51 | 0.88 | ~35 | ||
| PMAG | TOP C1r.1n (Jaramillo) | 1090C-4H-2, 130-130 | 24.60 | 30.91 | 1090C-4H-3, 70-? | 25.40 | 31.71 | 25.00 | 31.31 | 0.99 | ~35 | ||
| CN | RE Gephyrocapsa medium (4-5.5 µm) | 1090B-4H-6, 30-30 | 31.00 | 33.51 | 1090B-4H-6, 130-130 | 32.00 | 34.51 | 31.50 | 34.01 | 0.96-1.02 | ~35 | ||
| PMAG | BOT C1r.1n (Jaramillo) | 1090C-4H-4, 140-140 | 27.70 | 34.01 | 1090C-4H-5, 60-60 | 28.40 | 36.45 | 28.05 | 35.23 | 1.07 | ~35 | ||
| CN | FO R. asanoi | 1090B-4H-CC, 12-17 | 32.51 | 35.02 | 1090B-5H-1, 35-35 | 33.05 | 36.66 | 32.78 | 35.84 | 1.08 | ~35 | ||
| CN | LO Gephyrocapsa large (>5.5 µm) | 1090B-5H-1, 35-35 | 33.05 | 36.66 | 1090B-5H-1, 130-130 | 34.00 | 37.61 | 33.53 | 37.14 | 1.24 | ~12 | ||
| CN | FO Gephyrocapsa large (>5.5 µm) | 1090B-5H-3, 30-30 | 36.61 | 39.61 | 1090B-5H-3, 110-110 | 36.80 | 40.41 | 36.71 | 40.01 | 1.46 | ~12 | ||
| CN | LO C. macintyrei | 1090B-5H-5, 30-30 | 39.00 | 42.31 | 1090B-5H-5, 130-130 | 40.30 | 43.31 | 39.65 | 42.81 | 1.60 | ~12 | ||
| DIAT | TOP A. ingens Subzone a | 1090E-4H-CC, 15-20 | 35.35 | 41.50 | 1090B-5H-CC, 14-19 | 41.40 | 45.01 | 38.38 | 43.26 | 1.30 | ~12 | ||
| PMAG | TOP C2n (Olduvai) | 1090C-5H-3, 100-100 | 35.30 | 43.35 | 1090C-5H-4, 20-20 | 36.00 | 44.05 | 35.65 | 43.70 | 1.77 | ~12 | ||
| CN | FO Gephyrocapsa medium (4-5.5 µm) | 1090B-5H-6, 30-30 | 40.50 | 43.81 | 1090B-5H-6, 130-130 | 41.50 | 44.81 | 41.00 | 44.31 | 1.69 | ~12 | ||
| DIAT | TOP P. barboi Zone | 1090B-5H-6, 130-130 | 41.50 | 44.81 | 1090B-5H-CC, 14-19 | 41.40 | 45.01 | 41.45 | 44.91 | 1.80 | ~12 | ||
| PMAG | BOT C2n (Olduvai) | 1090C-5H-5, 30-30 | 37.60 | 45.65 | 1090C-5H-5, 90-90 | 38.20 | 46.25 | 37.90 | 45.95 | 1.95 | ~12 | ||
| DIAT | TOP T. kolbei-F. matuyamae Zone | 1090E-5H-2, 70-70 | 39.40 | 47.69 | 1090C-5H-CC, 9-14 | 40.19 | 48.24 | 39.80 | 47.97 | 2.00 | ~12 | ||
| PMAG | BOT C2r (Matuyama) | 1090C-6H-4, 130-130 | 46.60 | 54.42 | 1090C-6H-5, 40-40 | 47.20 | 55.02 | 46.90 | 54.72 | 2.58 | ~12 | ||
| DIAT | TOP T. insigna Subzone a | 1090B-6H-CC, 9-14 | 51.84 | 53.44 | 1090E-6H-2, 70-70 | 48.90 | 57.32 | 50.37 | 55.38 | 2.80 | ~12 | ||
| DIAT | TOP F. interfrigidara Zone | 1090E-6H-5, 70-70 | 53.40 | 61.82 | 1090E-6H-6, 20-20 | 54.90 | 62.82 | 54.15 | 62.32 | 3.26 | ~10 | ||
| DIAT | BOT F. interfrigidara Zone | 1090B-8H-2, 90-90 | 63.90 | 67.31 | 1090B-8H-2, 120-120 | 63.90 | 67.61 | 63.90 | 67.46 | 3.80 | ~10 | ||
| early Pliocene/early Miocene hiatus | 1090D-7H-CC, 17-22 | 62.90 | 68.98 | 1090B-8H-4, 90-90 | 66.60 | 70.31 | 64.75 | 69.65 | -- | ~10 | |||
| DIAT | LO T. spumellaroides | 1090E-9H-5, 70-70 | 81.90 | 91.81 | 1090B-10H-3, 70-70 | 88.40 | 98.77 | 85.15 | 95.29 | 19.0 | ~10 | ||
| DIAT | BOT T. fraga Zone | 1090E-11H-2, 70-70 | 96.40 | 106.21 | 1090E-12H-3, 70-70 | 107.40 | 116.61 | 101.90 | 111.41 | 20.9 | ~10 | ||
| RAD | TOP L. conica Zone | 1090B-13H-CC, 0-5 | 117.12 | 122.53 | 1090B-14H-CC, 0-5 | 127.51 | 131.16 | 122.32 | 126.85 | 22.5 | ~10 | ||
| DIAT | BOT T. spumellaroides Zone | 1090E-13H-1, 70-70 | 113.90 | 123.51 | 1090E-13H-5, 70-70 | 119.90 | 129.51 | 116.90 | 126.51 | 22.6 | ~10 | ||
| DIAT | LO R. vigilans | 1090B-16H-CC, 0-10 | 146.75 | 153.40 | 1090B-17H-CC, 14-24 | 154.36 | 161.86 | 150.56 | 157.63 | 25.5 | ~10 | ||
| DIAT | BOT R. gelida Zone | 1090B-18H-CC, 6-16 | 165.37 | 173.15 | 1090B-20H-CC, 22-32 | 184.42 | 192.03 | 174.90 | 182.59 | 26.5 | ~10 | ||
| RAD | TOP A. irregularis Zone | 1090B-21X-CC, 15-25 | 194.09 | 202.14 | 1090B-22X-CC, 0-10 | 203.69 | 211.30 | 198.89 | 206.72 | 24.1-?28.7 | ~10 | ||
| CN | LO R. umbilica | 1090B-23X-7, 30-30 | 213.40 | 220.70 | 1090B-23X-7, 130-130 | 214.40 | 221.70 | 213.90 | 221.20 | 31.3 | ~10 | ||
| CN | LO I. recurvus | 1090B-23X-7, 130-130 | 214.40 | 221.70 | 1090B-23X-CC, 26-36 | 213.76 | 222.16 | 214.08 | 221.93 | 31.8 | ~10 | ||
| CN | Acme Clausicoccus spp. | 1090B-24X-5, 130-130 | 221.10 | 232.06 | 1090B-24X-7, 110-110 | 222.90 | 233.86 | 222.00 | 232.96 | 33.3 | ~10 | ||
| RAD | TOP E. spinosum Zone | 1090B-25X-CC, 19-27 | 236.74 | 252.21 | 1090B-27X-CC, 13-18 | 251.53 | 263.52 | 244.14 | 257.87 | 30.9-34.7 | ~30 | ||
| CN | LO D. saipanensis | 1090B-27X-5, 120-120 | 250.10 | 262.09 | 1090B-27X-6, 30-30 | 250.70 | 262.69 | 250.40 | 262.39 | 34.2 | ~30 | ||
| CN | FO I. recurvus | 1090B-31X-6, 30-30 | 289.50 | 301.49 | 1090B-31X-7, 30-30 | 291.00 | 302.99 | 290.25 | 302.24 | 36.0 | ~30 | ||
| CN | FO R. bisecta | 1090B-38X-CC, 8-18 | 349.12 | 361.11 | 1090B-39X-1, 130-130 | 350.50 | 362.49 | 349.81 | 361.80 | 38.0 | ~30 | ||
| CN | LO Nannotetrina spp. | 1090B-41X-CC, 0-5 | 372.58 | 384.57 | 1090B-4-2X-1, 120-120 | 378.40 | 390.39 | 375.49 | 387.48 | 43.1 | ~5 | ||
Notes: Code abbreviations: DIAT = diatom, CN = calcareous nannofossil, PMAG = magnetic polarity, RAD = radiolaria. Event abbreviations: FO = first occurrence, LO = last occurrence, RE = reentrance, TOP = top of zone, BOT = bottom of zone. This table is also available in ASCII format in the TABLES directory.