DOI: 10.1016/j.palaeo.2012.10.039
论文题名: Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition
作者: Incarbona A. ; Dinarès-Turell J. ; Di Stefano E. ; Ippolito G. ; Pelosi N. ; Sprovieri R.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 369 起始页码: 303
结束页码: 312
语种: 英语
英文关键词: Ionian Sea
; Middle Pleistocene Transition
; Neogloboquadrina pachyderma sinistral coiling
; Orbital climate variability
; Planktonic foraminifera
英文摘要: The Middle Pleistocene Transition (1.2-0.7Ma) is the most recent re-organization of the global climate system which includes variations in the frequency and amplitude of glacial/interglacial cycles, increased ice sheet volume, sea surface temperature cooling and a significant drop in the CO2 atmospheric levels. Here we present high-resolution planktonic foraminifera data (mean sampling resolution of about 780years) from core LC10 recovered in the Ionian Sea (eastern Mediterranean), between 1.2 and 0.9Ma. Selected taxa, among them G. ruber, T. quinqueloba and G. bulloides, show significant periodicities that can be associated to orbital cycles, mainly precession and obliquity. The planktonic foraminifera based paleoclimatic curve exhibits a cooling linear trend that can be associated to similar phenomena observed in the North Atlantic. On the other hand, we refer to the influence of the North African Monsoon the occurrence of two peaks of the low-salinity tolerant species G. quadrilobatus that fall in coincidence of sapropel layers. Finally, we discuss the distribution pattern of N. pachyderma sinistral coiling, with peaks up to about 20% between MIS 30 and 28, and compare it to middle-late Quaternary records of the Sicily Channel and western Mediterranean. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69898
Appears in Collections: 过去全球变化的重建
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作者单位: Università degli Studi di Palermo, Dipartimento di Scienze della Terra e del Mare, Via Archirafi 22, 90134 Palermo, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Rome, Italy; Consiglio Nazionale delle Ricerche, Istituto per l'Ambiente Marino Costiero, Calata Porto di Massa, Interno Porto di Napoli, 80133, Naples, Italy
Recommended Citation:
Incarbona A.,Dinarès-Turell J.,Di Stefano E.,et al. Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,369