Bernaola, Gilen; Monechi, Simonetta (2007): Distribution of calcareous nannofossils in Cretaceous to Paleogene sediments of ODP Hole 208-1262C at Walvis Ridge, South Atlantic Ocean (Appendix A) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.693626, Supplement to: Bernaola, G; Monechi, S (2007): Calcareous nannofossil extinction and survivorship across the Cretaceous-Paleogene boundary at Walvis Ridge (ODP Hole 1262C, South Atlantic Ocean). Palaeogeography, Palaeoclimatology, Palaeoecology, 255(1-2), 132-156, https://doi.org/10.1016/j.palaeo.2007.02.045
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Abstract:
Site 1262 in the South Atlantic Ocean has provided a stratigraphically continuous deep Cretaceous/Paleogene boundary sequence. High resolution calcareous nannofossil quantitative analyses were carried out across the K/P boundary, and provided a remarkable record of the abrupt and catastrophic extinction. The calcareous nannofossil assemblages are abundant and well preserved allowing to obtain a precise bioevent sequence and to document in detail the survivors and victims and the subsequent recovery across the K/P boundary.
Late Maastrichtian diversity and absolute abundance is high and no decrease towards the boundary has been observed. The relative abundance of Cretaceous species does not suffer important changes during the latest Maastrichtian. However, the increase in abundance of cool-water taxa, paralleled with a decrease of warm water taxa in the uppermost 2 cm of the Maastrichtian, revealed a pulse of surface water cooling.
The K/P boundary is marked by an important decrease in calcareous nannofossil absolute abundance, the increase of Cretaceous-persistent species such as Cyclagelosphaera reinhardtii together with the dinoflagellate cysts of Thoracosphaera operculata and the appearance of the new-Paleocene taxa Cyclagelosphaera alta and Biantholithus sparsus. These events are followed by the successive relative abundance increases of other Cretaceous survivors as Zeugrhabdotus sigmoides, Markalius inversus and Biscutum recognized as r-selected taxa, adapted to eutrophic and cold water environments. In the early Danian several first occurrences of small new-Paleocene species have been observed: calcareous nannoplankton evolutionary attempts to colonize vacant niches left by the extinct Cretaceous species. Only some forms succeed and become ancestors to the Cenozoic assemblages - the other disappear in few kiloyear. The presence of a reworking/mixing interval above the K/P boundary hampered to unequivocally interpret if the few Cretaceous-vanishing taxa may have survived for a very short time after the K/P extinction.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: -27.185650 * Longitude: 1.576980
Date/Time Start: 2003-03-27T21:25:00 * Date/Time End: 2003-03-29T05:15:00
Minimum DEPTH, sediment/rock: 215.16 m * Maximum DEPTH, sediment/rock: 217.14 m
Event(s):
208-1262C * Latitude: -27.185650 * Longitude: 1.576980 * Date/Time Start: 2003-03-27T21:25:00 * Date/Time End: 2003-03-29T05:15:00 * Elevation: -4753.6 m * Penetration: 212.5 m * Recovery: 125.93 m * Location: Walvis Ridge, Southeast Atlantic Ocean * Campaign: Leg208 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 122.5 m cored; 90 m drilled; 102.8 % recovery
Comment:
<1 = present
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Sample code/label | Sample label | Bernaola, Gilen | DSDP/ODP/IODP sample designation | ||
| 3 | Nannofossils | Nannos | # | Bernaola, Gilen | Smear slide analysis | abundance spp./field of view |
| 4 | Acuturris scotus | A. scotus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 5 | Ahmuellerella regularis | A. regularis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 6 | Arkhangelskiella cymbiformis | A. cymbiformis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 7 | Broinsonia spp. | Broinsonia spp. | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 8 | Calculites spp. | Calculites spp. | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 9 | Ceratolithoides aculeus | C. aculeus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 10 | Ceratolithoides kamptneri | C. kamptneri | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 11 | Chiastozygus amphipons | C. amphipons | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 12 | Chiastozygus fessus | C. fessus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 13 | Chiastozygus litterarius | C. litterarius | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 14 | Corollithion exiguum | C. exiguum | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 15 | Corollithion kennedyi | C. kennedyi | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 16 | Corollithion madagaskarensis | C. madagaskarensis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 17 | Cretarhabdus conicus | C. conicus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 18 | Cribrocorona gallica | C. gallica | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 19 | Cribrosphaerella ehrenbergii | C. ehrenbergii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 20 | Cylindralithus cf. nudus | C. cf. nudus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 21 | Cylindralithus serratus | C. serratus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 22 | Discorhabdus ignotus | D. ignotus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 23 | Eiffellithus eximius | E. eximius | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 24 | Eiffellithus gorkae | E. gorkae | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 25 | Eiffellithus parallelus | E. parallelus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 26 | Eiffellithus turriseiffelii | E. turriseiffelii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 27 | Kamptnerius magnificus | K. magnificus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 28 | Lithraphidites carniolensis | L. carniolensis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 29 | Lithraphidites praequadratus | L. praequadratus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 30 | Lithraphidites quadratus | L. quadratus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 31 | Loxolithus armilla | L. armilla | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 32 | Manivitella pemmatoidea | M. pemmatoidea | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 33 | Microrhabdulus attenuatus | M. attenuatus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 34 | Microrhabdulus belgicus | M. belgicus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 35 | Microrhabdulus cf. undosus | M. cf. undosus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 36 | Microrhabdulus decoratus | M. decoratus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 37 | Micula concava | M. concava | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 38 | Micula decussata | M. decussata | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 39 | Micula murus | M. murus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 40 | Micula prinsii | M. prinsii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 41 | Micula spp. | Micula spp. | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 42 | Micula swastica | M. swastica | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 43 | Nephrolithus frequens | N. frequens | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 44 | Prediscosphaera spp. | Prediscosphaera spp. | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 45 | Prediscosphaera cretacea | P. cretacea | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 46 | Prediscosphaera grandis | P. grandis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 47 | Prediscosphaera honjoi | P. honjoi | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 48 | Prediscosphaera intercisa | P. intercisa | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 49 | Prediscosphaera majungae | P. majungae | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 50 | Prediscosphaera spinosa | P. spinosa | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 51 | Prediscosphaera stoveri | P. stoveri | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 52 | Pseudomicula quadrata | P. quadrata | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 53 | Quadrum bengalensis | Q. bengalensis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 54 | Quadrum gartneri | Q. gartneri | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 55 | Quadrum sissinghii | Q. sissinghii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 56 | Retecapsa angustiforata | R. angustiforata | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 57 | Retecapsa crenulata | R. crenulata | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 58 | Retecapsa ficula | R. ficula | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 59 | Retecapsa schizobrachiata | R. schizobrachiata | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 60 | Retecapsa surirella | R. surirella | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 61 | Rhagodiscus angustus | R. angustus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 62 | Rhagodiscus reniformis | R. reniformis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 63 | Rhagodiscus splendens | R. splendens | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 64 | Rhombolithion rhombicus | R. rhombicus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 65 | Rotelapillus munitus | R. munitus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 66 | Rotelapillus sp. | Rotelapillus sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, Cretaceous-vanishing |
| 67 | Staurolithites laffittei | S. laffittei | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 68 | Staurolithites mielnicensis | S. mielnicensis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 69 | Stoverius cf. coangustatus | S. cf. coangustatus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 70 | Tetrapodorhabdus decorus | T. decorus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 71 | Tranolithus minimus | T. minimus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 72 | Vekshinella crux | V. crux | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 73 | Watznaueria barnesae | W. barnesae | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 74 | Watznaueria biporta | W. biporta | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 75 | Watznaueria fossacincta | W. fossacincta | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 76 | Watznaueria manivitiae | W. manivitiae | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 77 | Zeugrhabdotus embergeri | Z. embergeri | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 78 | Zeugrhabdotus sp. | Zeugrhabdotus sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, Cretaceous-vanishing |
| 79 | Zeugrhabdotus spiralis | Z. spiralis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-vanishing |
| 80 | Biscutum castrorum | B. castrorum | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 81 | Biscutum constans | B. constans | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 82 | Braarudospharea bigelowii | B. bigelowii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 83 | Cruciplacolithus primus | C. primus | # | Bernaola, Gilen | Smear slide analysis | medium, Cretaceous-persistent |
| 84 | Cruciplacolithus primus | C. primus | # | Bernaola, Gilen | Smear slide analysis | big, Cretaceous-persistent |
| 85 | Cyclagelosphaera reinhardtii | C. reinhardtii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 86 | Cyclagelosphaera sp. | Cyclagelosphaera sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, Cretaceous-persistent |
| 87 | Goniolithus fluckigeri | G. fluckigeri | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 88 | Lapideacassis spp. | Lapideacassis spp. | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 89 | Markalius apertus | M. apertus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 90 | Markalius inversus | M. inversus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 91 | Markalius walvisensis | M. walvisensis | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 92 | Neobiscutum cf. romeinii | N. cf. romeinii | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 93 | Neobiscutum parvulum | N. parvulum | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 94 | Octolithus multiplus | O. multiplus | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 95 | Zeugrhabdotus sigmoides | Z. sigmoides | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 96 | Thoracosphaera operculata | T. operculata | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 97 | Thoracosphaera saxea | T. saxea | # | Bernaola, Gilen | Smear slide analysis | Cretaceous-persistent |
| 98 | Biantholithus sparsus | B. sparsus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 99 | Cyclagelosphaera alta | Cyclagelosphaera alta | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 100 | Neocrepidolithus spp. | Neocrepidolithus spp. | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 101 | Neochiastozygus sp. | Neochiastozygus sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, New-Paleocene |
| 102 | Neocrepidolithus cruciatus | N. cruciatus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 103 | Neocrepidolitus fossus | N. fossus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 104 | Biscutum sp. | Biscutum sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, New-Paleocene |
| 105 | Futyania petalosa | F. petalosa | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 106 | Chiastozygus ultimus | C. ultimus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 107 | Holococcolithus sp. | Holococcolithus sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, New-Paleocene |
| 108 | Biantholithus hughesii | B. hughesii | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 109 | Neocrepidolithus neocrassus | N. neocrassus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 110 | Cyclolithella spp. | Cyclolithella spp. | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 111 | Neocrepidolithus sp. | Neocrepidolithus sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, New-Paleocene |
| 112 | Neocrepidolithus sp. | Neocrepidolithus sp. | # | Bernaola, Gilen | Smear slide analysis | var. 2, New-Paleocene |
| 113 | Ericsonia cf. subpertusa | E. cf. subpertusa | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 114 | Neochiastozygus primitivus | N. primitivus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 115 | Hornibrookina apellanizii | H. apellanizii | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 116 | Coccolithus cf. pelagicus | C. cf. pelagicus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 117 | Praeprinsius cf. tenuiculum | P. cf. tenuiculum | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 118 | Thoracosphaera sp. | Thoracosphaera sp. | # | Bernaola, Gilen | Smear slide analysis | var. 1, New-Paleocene |
| 119 | Neochiastozygus modestus | N. modestus | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 120 | Cruciplacolithus zachosii | C. zachosii | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
| 121 | Cruciplacolithus cf. intermedius | C. cf. intermedius | # | Bernaola, Gilen | Smear slide analysis | New-Paleocene |
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