Benthic foraminiferal assemblages and bottom water evolution off the Portuguese margin since the Middle Pleistocene

The upper 250 meter-long sediment core of Site U1391 (1085 m water depth) retrieved from the Portuguese margin in the Northeast Atlantic Ocean was adopted for the benthic foraminiferal analyses to disclose the variations in Mediterranean Outflow Water (MOW) intensity over the last similar to 0.9 Ma....

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Bibliographic Details
Published in:Global and Planetary Change
Main Authors: Guo, QM (郭启梅), Li, BH （李保华), Kim, JK
Format: Report
Language:English
Published: ELSEVIER SCIENCE BV 2017
Subjects:
Benthic Foraminifera
Portuguese Margin
Mediterranean Outflow Water
Middle-late Pleistocene
Physical Geography
Geology
Geography
Physical
Geosciences
Multidisciplinary
Northeast Atlantic
Online Access:http://ir.nigpas.ac.cn/handle/332004/13697
https://doi.org/10.1016/j.gloplacha.2016.11.004
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Summary:The upper 250 meter-long sediment core of Site U1391 (1085 m water depth) retrieved from the Portuguese margin in the Northeast Atlantic Ocean was adopted for the benthic foraminiferal analyses to disclose the variations in Mediterranean Outflow Water (MOW) intensity over the last similar to 0.9 Ma. Benthic foraminifera are abundant at this site and mainly composed of the hyaline forms (80%, such as Cibicidoides/Cibicides spp., Globobulimina spp., Bulimina spp., Uvigerina spp., Melonis spp., Sphaeroidina bulloides, Hoeglundina elegans, Gyroidinoides spp., Lenticulina spp. and Planulina ariminensis), while the agglutinated and porcelaneous forms have only 5% and 14.1% on average, respectively.

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