Table T2. Distribution of Cenozoic calcareous nannofossils, Hole U1376A.
|
Core, section, interval (cm) |
Top depth (mbsf) |
Bottom depth (mbsf) |
Strat. unit |
Zone | Age | Abundance | Preservation | Amaurolithus primus | Amaurolithus tricorniculatus | Calcidiscus leptoporus | Cyclicargolithus abisectus | Discoaster asymmetricus | Discoaster braarudii | Discoaster challengeri | Discoaster exilis | Discoaster kugleri | Discoaster moorei | Sphenolithus belemnos | Sphenolithus ciperoensis | Sphenolithus heteromorphus | Triquetrorhabdulus rugosus | Triquetrorhabdulus carinatus |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 330-U1376A- | ||||||||||||||||||||||
| 1R-1W, 1 | 0.01 | 0.01 | IA | P | ||||||||||||||||||
| 1R-1W, 41 | 0.41 | 0.41 | IA | CN9 | late Miocene | P | R | R | F | R | ||||||||||||
| 1R-1W, 76 | 0.76 | 0.76 | IA | CN5b | middle–late Miocene | P | C | R | F | R | R | R | R | R | R | R | R | |||||
| 1R-7, 49–50 | 8.96 | 8.97 | IC | ND | Unidentified | B | ||||||||||||||||
| 2R-6, 121–122 | 17.48 | 17.49 | IC | ND | Unidentified | B | ||||||||||||||||
| 3R-6, 117–120 | 26.73 | 26.76 | IIA | ND | Unidentified | B | ||||||||||||||||
| 4R-1W, 1 | 28.61 | 28.61 | IIA | ND | Unidentified | B | ||||||||||||||||
| 4R-3W, 107 | 32.56 | 32.56 | IIA | ND | Unidentified | B | ||||||||||||||||
| 4R-4W, 88 | 33.75 | 33.75 | IIA | ND | Unidentified | B | ||||||||||||||||
ND = not defined. Abundance: C = common, F = few, R = rare, B = barren. Preservation: P = poor.
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