Press to Close

Table T9. Control points used to calculate sedimentation rates for Holes 1089A, 1089B, 1089C, and 1089D.

Code Depth range of stratigraphic datums Age
(Ma) 		Sedimetation rate
(m/m.y.)
Top Bottom Mean
Event/Zone/Chron Core, section,
interval (cm) 		Depth
(mbsf) 		Depth
(mcd) 		Core, section,
interval (cm) 		Depth
(mbsf) 		Depth
(mcd) 		Depth
(mbsf) 		Depth
(mcd)
~128
177- 177- ~128
DIAT/REFL MID MIS 5.3 1089B 1089B 17.56 23.00 0.099 ~128
DIAT/REFL MID MIS 5.5 1089B 1089B 23.50 27.08 0.122 ~128
DIAT/REFL MID MIS 6.5 1089C 1089C 26.50 30.08 0.171 ~128
DIAT/REFL MID MIS 7.1 1089B 1089B 31.10 35.50 0.194 ~128
DIAT/REFL MID MIS 7.5 1089B 1089B 35.45 39.20 0.240 ~128
~128
CN FO E. huxleyi 1089B-5H-2, 30-30 35.10 39.56 1089B-5H-2, 130-130 36.10 40.56 35.60 40.06 0.260 ~128
DIAT/REFL MID MIS 9.3 1089B 1089B 46.00 52.20 0.331 ~128
DIAT/REFL MID MIS 11.1 1089B 1089B 52.40 55.90 0.368 ~128
DIAT/REFL MID MIS 11.3 1089B 1089B 58.35 63.50 0.405 ~128
CN LO P. lacunosa 1089A-7H-CC, 51-56 63.40 67.54 1089A-8H-1, 30-30 64.60 69.37 63.90 68.46 0.460 ~128
~128
DIAT TOP A. ingens Subzone c, MIS 16.3 1089B-9H-CC, 15-20 80.20 89.61 1089C-10H-3, 60-60 84.00 90.49 82.10 90.05 0.640 ~128
MAG BOT C1n (Brunhes) 1089B-12H-4, 65-65 105.00 116.26 1089B-13H-4, 20-20 114.00 125.26 109.50 120.76 0.780  
CN RE Geph. medium (4-5.5 µm) 1089B-17H-2, 130-130 149.10 160.36 1089B-17H-2, 120-120 150.00 161.26 149.55 160.81 0.960  
DIAT TOP A. ingens Subzone b 1089B-16H-CC, 12-17 146.40 157.66 1089B-17H-CC, 18-23 155.30 166.54 86.65 162.10 1.070 ~110
MAG BOT C1r.1n (Jaramillo) 1089B-17H-3, 130-130 151.60 162.86 1089B-17H-5, 30-30 153.60 164.86 152.60 163.86 1.070 ~110
~110
CN FO R. asanoi 1089A-18H-3, 130-130 163.60 171.56 1089A-18H-4, 30-30 164.10 172.05 163.85 171.80 1.080 ~110
CN LO Gephyrocapsa large (>5.5 µm) 1089B-18H-CC, 13-18 165.39 176.65 1089A-19H-1, 120-120 170.00 178.01 167.69 177.33 1.240 ~110
DIAT TOP A. ingens Subzone a* 1089C-21H-CC, 19-24 185.20 197.83 1089B-20H-CC, 0-10 190.80 202.05 95.40 199.94 1.300 ~110
CN FO Gephyrocapsa large (>5.5 µm) 1089B-20H-6, 30-30 182.88 195.56 1089B-20H-CC, 0-10 185.15 197.83 184.02 196.70 1.460 ~110
CN LO C. macintyrei 1089A-23H-1, 120-120 208.00 220.30 1089A-23H-2, 30-30 208.60 220.90 208.30 220.60 1.600 ~84
~84
CN FO Gephyrocapsa medium (4-5 µm) 1089A-23H-4, 30-30 211.60 223.90 1089A-23H-4, 120-120 212.50 224.80 212.05 224.35 1.690 ~84
MAG TOP C2n (Olduvai) 1089B-23H-7, 50-50 213.80 228.90 1089B-24H-2, 50-50 215.80 230.90 214.80 229.90 1.770 ~84
DIAT TOP P. barboi Zone 1089B-23H-CC, 0-8 213.70 228.75 1089B-24H-CC, 23-28 223.40 238.53 123.20 233.64 1.800 ~84
CN LO D. brouweri 1089B-24H-6, 30-30 221.60 236.70 1089B-24H-CC, 23-28 223.43 238.53 222.52 237.62 1.950 ~84
MAG BOT C2n (Olduvai) 1089B-25H-2, 65-65 225.45 240.55 1089B-25H-3, 135-135 227.65 242.75 226.55 241.65 1.950 ~84
DIAT TOP T. kolbei/F. matuyama Zone 1089B-24H-CC, 23-28 223.40 238.53 1089B-25H-CC, 14-19 232.80 247.88 228.10 243.21 2.000 ~84

Notes: Code abbreviations: DIAT = diatom, REFL = reflectance, CN = calcareous nannofossil, MAG = magnetic polarity. Event abbreviations: FO = first occurrence, LO = last occurrence, RE = reentrance, TOP = top of interval, MID = middle of interval, BOT = bottom of interval. Age assignment of marine isotope stages (MIS) according to Imbrie et al. (1984). * = datum not included in sedimentation rate calculations. Sedimentation rates at 1.07 Ma were calculated by averaging the mean depth range between the TOP of A. ingens and the BOT of C1r.1n (Jaramillo Subchron). Shaded area indicates a disturbed interval. This table is also available in ASCII format in the TABLES directory.

Press to Close