STABLE ISOTOPE STRATIGRAPHY OF THE LATE MIDDLE EOCENE

The primary aim of the this investigation was to examine the stabil-ity of subtropical sea-surface temperatures and reconstruct the surface-to-benthos thermal gradient. High-resolution stable isotopic analyses (δ18O and δ13C) were conducted on late middle Eocene planktonic and benthic foraminifers r...

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Bibliographic Details
Main Authors: At Site, Blake Nose, Bridget S. Wade, Richard D. Norris, Dick Kroon
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
North Atlantic
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.3200
http://geotest.tamu.edu/userfiles/42/wade2000.pdf
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Summary:The primary aim of the this investigation was to examine the stabil-ity of subtropical sea-surface temperatures and reconstruct the surface-to-benthos thermal gradient. High-resolution stable isotopic analyses (δ18O and δ13C) were conducted on late middle Eocene planktonic and benthic foraminifers recovered from Hole 1051B, Blake Nose, western North Atlantic. The sequence comprises a siliceous nannofossil and for-aminifer ooze, with well-preserved calcareous microfossils. Isotopic ex-amination was conducted on the mixed-layer dweller Morozovella spinulosa and the benthic foraminifer Nuttalides truempyi at this sub-tropical site.

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