Abstract
The Mead Stream section, northern Clarence Valley, is the most complete Paleocene-early Eocene record of pelagic sedimentation in the mid-latitude (~55° S paleolatitude) Pacific Ocean. Integrated studies of sediments, siliceous and calcareous microfossils and carbon isotopes have shown that major global climate events are recorded by distinct changes in lithofacies and biofacies. The consistent and often abundant occurrence of siliceous microfossils in the section provides a rare opportunity to undertake quantitative analysis of high-latitude radiolarian population changes through the late Paleocene and early Eocene. Late Paleocene assemblages are dominated by spumellarians, although the nassellarian species Buryella tetradica is the most abundant species. The Paleocene-Eocene boundary (= base of Paleocene-Eocene thermal maximum) in the Mead Stream section is marked by major faunal turnover, including an abrupt decrease in B. tetradica, first occurrences of several low-latitude species (e.g. Amphicraspedum prolixum s.s., Lychnocanium auxilla, Podocyrtis papalis, Phormocyrtis turgida, Theocorysl phyzella) and increased abundance of large, robust spumellarians relative to small actinommids. Above an 18-m thick, lowermost Eocene interval in which radiolarians are abundant to common, radiolarian abundance declines progressively, falling to <10 individuals per gram in the marl-dominated unit that is correlated with the early Eocene climatic optimum. These trends in siliceous microfossil populations signal major changes in watermass characteristics along the northeastern New Zealand margin in the earliest Eocene. Assemblages typical of cool, eutrophic, watermasses that dominated the Marlborough Paleocene were replaced in the early Eocene by assemblages more characteristic of oligotrophic, stratified, subtropical-tropical watermasses.
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References
Berggren W., Kent D., Swisher C. & Aubry M.-P. 1995: A revised Cenozoic geochronology and chronostratigraphy. In: Berggren, W. et al. (Eds): Geochronology, time scales and global stratigraphic correlation, 129–212, SEPM Special Publication 54.
Boltovsky D. 1987: Sedimentary record of radiolarian biogeography in the equatorial to Antarctic western Pacific Ocean. Micropaleontology 33, 267–281.
Casey R. 1993: Radiolaria. In: Lipps, J.H. (Ed.): Fossil Prokaryotes and Protists, 249–284. Blackwell Scientific Publications, Oxford/London, UK.
Caulet J., Venec-Peyre M.-T., Vergnaud-Grazzini C. & Nigrini C. 1992: Variation of South Somalian upwelling during the last 160 ka: radiolarian and foraminifera records in core MD 85674. In: Summerhayes, C. et al. (Eds): Upwelling Systems: Evolution since the Early Miocene, Geological Society of London, Special Publication 64, 379–389.
Corfield R. M. & Cartlidge J. E. 1992: Océanographic and climatic implications of the Palaeocene carbon isotope maximum. Terra Nova 4, 443–455.
Crampton J., Laird M., Nicol A., Townsend D. & Van Dissen R. 2003: Palinspastic reconstructions of southeastern Marlborough, New Zealand, for Late Cretaceous to Eocene times. New Zealand Journal of Geology and Geophysics 46, 153–175.
De Wever P., Dumitrica P., Caulet J.-P., Nigrini C. & Caridroit M. 2001: Radiolarians in the sedimentary record. 533 p., Gordon and Breach Science Publishers, The Netherlands.
Hancock H., Dickens G., Strong C, Hollis C. & Field B. 2003: Foraminiferal and carbon isotope stratigraphy through the Paleocene-Eocene transition at Dee Stream, Marlborough, New Zealand. New Zealand Journal of Geology and Geophysics 46, 1–19.
Hollis C. 1996: Radiolarian faunal change through the Cretaceous-Tertiary transition of eastern Marlborough, New Zealand. In: MacLeod, N. & Keller, G. (Eds.): Cretaceous-Tertiary Mass Extinctions: Biotic and Environmental Changes, 173–204, Norton Press, New York.
-1997: Cretaceous-Paleocene Radiolaria from eastern Marlborough, New Zealand. Institute of Geological and Nuclear-Sciences Monograph 17,152 p.
-2002: Biostratigraphy and paleoceanographic significance of Paleocene radiolarians from offshore eastern New Zealand. Marine Micropaleontology 46, 265–316.
Hollis C, Dickens G., Field B., Jones C. & Strong C. 2005: The Paleocene-Eocene transition at Mead Stream, New Zealand: a southern Pacific record of early Cenozoic global change. Palaeogeography, Palaeoclimatology, Paleoecology 215,313–343.
Hollis C, Rodgers K. & Parker R. 1995: Siliceous plankton bloom in the earliest Tertiary of Marlborough, New Zealand. Geology (Boulder) 23, 835–838.
Hollis C, Waghorn D., Strong C. & Crouch E. 1997: Integrated Paleogene biostratigraphy of DSDP site 277 (Leg 29): foraminifera, calcareous nannofossils, Radiolaria, and palynomorphs. Institute of Geological & Nuclear Sciences Science Report 97/7, 1–73.
Hollis C, Rodgers K., Strong C, Field B. & Rogers K. 2003a: Paleoenvironmental changes across the Cretaceous/Tertiary boundary in the northern Clarence Valley, southeastern Marlborough, New Zealand. New Zealand Journal of Geology and Geophysics 46,209–234.
Hollis C, Strong C, Rodgers K. & Rogers K. 2003b: Paleoenvironmental changes across the Cretaceous/Tertiary boundary at Flaxbourne River and Woodside Creek, eastern Marlborough, New Zealand. New Zealand Journal of Geology and Geophysics 46,177–197.
Hollis C, Dickens G., Field B., Jones C. & Strong C. 2005: The Paleocene-Eocene transition at Mead Stream, New Zealand: a southern Pacific record of early Cenozoic global change. Palaeogeography, Palaeoclimatology, Paleoecology 215, 313–343.
Huber M. 2002: Straw man 1; preliminary view of the tropical Pacific from a global coupled climate model simulation of the early Paleogene. Proceedings of the Ocean Drilling Program, initial reports, Paleogene equatorial transect, Leg 199. Proceedings of the Ocean Drilling Program, Part A: Initial Reports 199, 30.
Keller G., Adatte T., Hollis C, Ordonez M., Zambrano I., Jimenez N., Stinnesbeck E., Aleman A. & Hale-Erlich W. 1997: The Cretaceous/Tertiary boundary event in Ecuador: reduced biotic effects due to eastern boundary current setting. Marine Micropaleontology 31, 97–133.
Killops S., Hollis C, Morgans H., Sutherland R., Field B. & Leckie D. 2000: Paleoceanographic significance of Late Paleocene dysaerobia at the shelf/slope break around New Zealand. Palaeogeography, Palaeoclimatology, Palaeoecology 156, 51–70.
King P., Naish T., Browne G., Field B. & Edbrooke S. 1999: Cretaceous to Recent sedimentary patterns in New Zealand. Institute of Geological and Nuclear Sciences Folio Series 1. 35 p.
Kurtz A., Kump L., Arthur M., Zachos J. & Paytan A. 2003: Early Cenozoic decoupling of the global carbon and sulfur cycles. Paleoceanography 18(4), 1090, doi:10.1029/2003PA000908
Lipps J. H. 1993: Fossil prokaryotes and protists. 342 p., Blackwell Scientific, Boston.
Nigrini C. & Sanfilippo A. 2000: Paleogene radiolarians from Sites 998, 999, and 1001 in the Caribbean. Proceedings of the Ocean Drilling Program, Scientific Results 165, 57–81.
Reay M. 1993: Geology of the middle part of the Clarence Valley. Institute of Geological and Nuclear Sciences Geological Map 10.144 p. + 1 map.
Sanfilippo A. & Blome C. 2001: Biostratigraphic implications of mid-latitude Palaeocene-Eocene radiolarian faunas from Hole 1051 A, ODP Leg 171B
Blake Nose, western North Atlantic. In: Kroon, D. et al. (Eds.): Western North Atlantic Palaeogene and Cretaceous palaeoceanography. Geological Society Special Publication 183,185–224.
Sanfilippo A. & Nigrini C. 1998a: Upper Paleocene-Lower Eocene deep-sea radiolarian stratigraphy and the Paleocene/Eocene Series boundary. In: Aubry, M.-P., et al. (Eds.): Late Paleocene-Early Eocene climatic and biotic events in the marine and terrestrial records, 244–276, Columbia University Press, New York.
-1998b: Code numbers for Cenozoic low latitude radiolarian biostratigraphic zones and GPTS conversion tables. Marine Micropaleontology 33,109–156.
Strong C, Hollis C. & Wilson G. 1995: Foraminiferal, radiolarian, and dinoflagellate biostratigraphy of Late Cretaceous to middle Eocene pelagic sediments (Muzzle Group), Mead Stream, Marlborough, New Zealand. New Zealand Journal of Geology and Geophysics 38,171–209.
Sutherland R., King P. & Wood R. 2001: Tectonic evolution of Cretaceous rift basins in south-eastern Australia and New Zealand: implications for exploration risk assessment. In: Hill K. & Bernecker T. (Eds.): Eastern Australasian basins symposium: a refocused energy perspective for the future. Petroleum Exploration Society of Australia Special Publication 1, 3–13.
Thompson E. & Schmitz B. 1997: Barium and the late Paleocene δ13C maximum: evidence of increased marine surface productivity. Paleoceanography 12, 239–254.
Zachos J., Pagani M., Sloan L., Thomas E. & Billups K. 2001: Trends, rhythms, and aberrations in global climate 65 Ma to present. Science 292, 686–693.
Zachos J., Wara M., Bohaty S., Delaney M., Petrizzo M., Brill A., Bralower T. & Premoli-Silva I. 2003: A transient rise in tropical sea surface temperature during the Paleocene-Eocene thermal maximum. Science 302,1551–1554.
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Hollis, C.J. (2007). Radiolarian faunal turnover through the Paleocene-eocene transition, Mead Stream, New Zealand. In: Baumgartner, P.O., Aitchison, J.C., De Wever, P., Jackett, SJ. (eds) Radiolaria. Eclogae Geologicae Helvetiae Supplement, vol 2. Birkhäuser, Basel. https://doi.org/10.1007/978-3-7643-8344-2_7
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DOI: https://doi.org/10.1007/978-3-7643-8344-2_7
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