|
|
Planktonic foraminiferal biohorizon
|
Diatom biohorizon
|
Age
(Ma) |
Core, section,
interval (cm) |
Core, section,
interval (cm) |
Depth
(mbsf) |
Core, section,
interval (cm) |
Depth
(mbsf) |
|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
178-1150A- | 178-1150B- |
|
178- 1151A- |
|
|
|
|
LO Proboscia curvirostris | 0.300 | 5H-CC/6H-CC | ND | 46.33/55.73 | ND | ND |
|
|
|
LO Actinocyclus oculatus | 1.01-1.46 | 11H-CC/12H-CC | ND | 102.66/112.15 | 3R-CC/4R-CC | 92.50/99.51 |
| (1) | LO Neogloboquadrina asanoi | 14X-5, 42-44/16X-1, 40-44 | ND | 122.82/136.00 | 6R-1, 42-45/7R-3, 40-44 | 113.04/125.62 | ||
| LO Neodenticula koizumii | 2.000 | 15X-CC/16X-CC | ND | 130.20/139.58 | 5R-CC/6R-CC | 105.90/118.07 | ||
| (2) | LO Globorotalia puncticulata | 17X-2, 40-42/18X-4, 38-42 | ND | 147.10/159.68 | 7R-3, 40-44/9R-1, 40-43 | 125.62/141.82 | ||
| (3) | FO Globorotalia inflata (modern form) | 18X-4, 38-42/25X-2, 40-44 | ND | 159.68/224.10 | 9R-3, 40-43/10R-5, 40-44 | 144.82/157.40 | ||
|
|
|
LCO Neodenticula kamtschatica | 2.61-2.68 | 21X-CC/22X-CC | ND | 192.01/202.94 | 11R-CC/12R-CC | 168.86/179.96 |
|
|
|
FO N. koizumii | 3.53-3.95 | 27X-CC/28X-CC | ND | 251.16/260.33 | 14R-CC/15R-CC | 199.19/208.87 |
| (4) | FO N. asanoi |
|
|
36X-6, 40-42/39X-4, 40-42 | ND | 335.78/362.10 | 16R-1, 40-43/16R-3, 40-43 | 209.32/212.32 |
| (5) | LO Globorotalia ikebei |
|
|
44X-6, 40-44/48X-6, 39-43 | ND | 413.10/451.59 | 16R-3, 40-43/18R-1, 40-43 | 212.32/228.52 |
| (6) | FO G. ikebei |
|
|
64X-2, 39-42/66X-6, 40-43 | ND | 599.89/625.20 | 35R-1, 55-57/41R-1, 38-41 | 392.66/449.90 |
| (7) | LO Globigerina nepenthes |
|
|
ND | 7R-1, 40-44/11R-1, 40-43 | 758.30/796.90 | 50R-1, 40-43/54R-1, 39-43 | 536.42/575.11 |
|
|
|
FCO N. kamtschatica | 6.400 | ND | 21R-CC/22R-CC | 898.32/910.67 | 77R-CC/79R-CC | 800.62/816.95 |
|
|
|
LCO Thalassionema schraderi | 7.600 | ND | 35R-CC/36R-CC | 1031.50/1044.70 | 79R-CC/80R-CC | 816.95/834.47 |
|
|
|
LCO Denticulopsis simonsenii | 8.600 | ND | 40R-CC/41R-CC | 1079.20/1094.50 | 90R-CC/91R-CC | 926.10/939.54 |
|
|
|
LO Denticulopsis dimorpha | 9.16 | ND | 42R-CC/43R-CC | 1103.90/1111.30 | 90R-CC/91R-CC | 926.10/939.54 |
| (8) | LO Globoquadrina dehiscens |
|
|
ND | 45R-2, 40-42/46R-4, 39-41 | 1125.80/1138.16 | 89R-3, 40-43/92R-5, 40-44 | 914.62/946.52 |
|
|
|
FO D. dimorpha | 9.90 | ND | 48R-CC/49R-CC | 1157.70/1170.60 | 95R-CC/99R-CC | 970.00/1009.53 |
Note: The interval in which the first/last occurrence was observed and the actual depth (mbsf) shown for all three holes. The diatom data of Sites 1150 and 1151 are quoted from Maruyama and Shiono (this volume). ND = no data. LO = last occurrence, FO = first occurrence, LCO = last common occurrence, FCO = first common occurrence.