DOI: 10.1016/j.gloplacha.2015.10.004
论文题名: Pleistocene calcareous nannofossil biochronology at IODP Site U1385 (Expedition 339)
作者: Balestra B. ; Flores J.-A. ; Hodell D.A. ; Hernández-Molina F.J. ; Stow D.A.V.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 135 起始页码: 57
结束页码: 65
语种: 英语
英文关键词: Calcareous nannofossil bioevents
; Environmental control
; Paleoceanographic implications
; Pleistocene
Scopus关键词: Environmental engineering
; Environmental management
; Isotopes
; Sea level
; Calcareous nannofossil
; Calcareous nannofossils
; Environmental control
; Integrated ocean drilling programs
; Oxygen isotope stratigraphy
; Paleoceanographic implications
; Pleistocene
; Stratigraphic records
; Stratigraphy
; Emiliania huxleyi
; Gephyrocapsa caribbeanica
; Gephyrocapsa omega
; Helicosphaera
; Reticulofenestra asanoi
英文摘要: During Integrated Ocean Drilling Program (IODP) Expedition 339, Site U1385 (37°34'N, 10°7'W, 2578 m below sea level) was drilled in the lower slope of the Portuguese margin, to provide a marine reference section of Pleistocene millennial-scale climate variability. Five holes were cored using the Advanced Piston Corer (APC) to a depth of ~ 151 m below sea floor (mbsf) recovering a continuous stratigraphic record covering the past 1.4 Ma. Here we present results of the succession of standard and unconventional calcareous nannofossil biostratigraphic events. The quantitative study of calcareous nannofossils showed well-preserved and abundant assemblages throughout the core. Most conventional Pleistocene events were recognized and the timing of bioevents were calibrated using correlation to the new oxygen isotope stratigraphy record developed for the Site U1385. The analyses provide further data on the stratigraphic distribution of selected species and genera, such as the large Emiliania huxleyi (> 4 μm), Gephyrocapsa caribbeanica, Helicosphaera inversa, Gephyrocapsa omega and Reticulofenestra asanoi (> 6 μm) and other circular-subcircular small reticulofenestrids, resulting in new insights into the environmental control of their stratigraphic patterns. Finally, the comparison between nannofossil datums and oxygen isotope stratigraphy on the same samples has resulted in an accurate revision of timing of the events, providing valuable biochronologic information. © 2015 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954372929&doi=10.1016%2fj.gloplacha.2015.10.004&partnerID=40&md5=2c55380d9dd60e03854e125284e6be85
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11457
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: University of California Santa Cruz, Institute of Marine Science, United States
Recommended Citation:
Balestra B.,Flores J.-A.,Hodell D.A.,et al. Pleistocene calcareous nannofossil biochronology at IODP Site U1385 (Expedition 339)[J]. Global and Planetary Change,2015-01-01,135.