Westerhold, Thomas et al. (2011): A complete high-resolution Paleocene benthic stable isotope record for the Central Pacific (ODP Site 1209)

Leg/Site/Hole:
ODP 198
ODP 198 1209
Identifier:
2013-035829
georefid

10.1029/2010PA002092
doi

Creator:
Westerhold, Thomas
University of Bremen, Center for Marine Environmental Sciences, Bremen, Germany
author

Roehl, Ursula
University of California-Santa Cruz, United States
author

Donner, Barbara
author

McCarren, Heather K.
author

Zachos, James C.
author

Identification:
A complete high-resolution Paleocene benthic stable isotope record for the Central Pacific (ODP Site 1209)
2011
Paleoceanography
American Geophysical Union, Washington, DC, United States
26
2
We have compiled the first stratigraphically continuous high-resolution benthic foraminiferal stable isotope record for the Paleocene from a single site utilizing cores recovered at Pacific ODP Site 1209. The long-term trend in the benthic isotope record suggests a close coupling of volcanic CO (sub 2) input and deep-sea warming. Over the short-term the record is characterized by slow excursions with a pronounced periodic beat related to the short (100 kyr) and long (405 kyr) eccentricity cycle. The phase relationship between the benthic isotope record and eccentricity is similar to patterns documented for the Oligocene and Miocene confirming the role of orbital forcing as the pace maker for paleoclimatic variability on Milankovitch time scales. In addition, the record documents an unusual transient warming of 2 degrees C coeval with a 0.6 ppm carbon isotope excursion and a decrease in carbonate content at 61.75 Ma. This event, which bears some resemblance to Eocene hyperthermals, marks the onset of a long-term decline in delta (super 13) C. The timing indicates it might be related to the initiation of volcanism along Greenland margin.
English
Serial
Coverage:Geographic coordinates:
North:32.4000
West:158.3000East: 158.3100
South:32.3900

Stratigraphy; C-13/C-12; carbon; Cenozoic; chemostratigraphy; climate forcing; cores; Foraminifera; Invertebrata; isotope ratios; isotopes; Leg 198; marine sediments; microfossils; North Pacific; Northwest Pacific; O-18/O-16; Ocean Drilling Program; ODP Site 1209; orbital forcing; oxygen; Pacific Ocean; Paleocene; paleoclimatology; Paleogene; paleotemperature; Protista; sediments; Shatsky Rise; stable isotopes; Tertiary; West Pacific;

.