noaa-ocean-11752
Northwest Pacific ODP882 Plio-Pleistocene Lithic and Diatom Isotope Data
Bailey, I.; Liu, Q.; Swann, G.E.A.; Jiang, Z.; Sun, Y.; Zhao, X.; Roberts, A.P.
Northwest Pacific ODP882 Plio-Pleistocene Lithic and Diatom Isotope Data
2011-06-30
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/11752
Investigator
I.
Bailey
Investigator
Q.
Liu
Investigator
G.E.A.
Swann
Investigator
Z.
Jiang
Investigator
Y.
Sun
Investigator
X.
Zhao
Investigator
A.P.
Roberts
earth science
paleoclimate
paleoceanography
depth,null,null,meter,null,paleoceanography,composited,null,N,null
earth science
paleoclimate
paleoceanography
mineral matter,null,null,count per square centimeter per kiloyear,null,paleoceanography,null,null,N,lithics > 150 um (x 103)
earth science
paleoclimate
paleoceanography
mineral matter,null,null,count per square centimeter per kiloyear,null,paleoceanography,null,null,N,lithics + fresh volcanics > 150 um (x 103)
earth science
paleoclimate
paleoceanography
identified diatom,null,null,null,null,paleoceanography,null,null,N,C. radiatus
earth science
paleoclimate
paleoceanography
age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
mineral matter,null,null,count per gram,null,paleoceanography,null,null,N,lithics > 150 um
earth science
paleoclimate
paleoceanography
identified diatom,null,null,null,null,paleoceanography,null,null,N,C. marginatus
earth science
paleoclimate
paleoceanography
mineral matter,null,null,count per gram,null,paleoceanography,null,null,N,lithics + fresh volcanics > 150 um
earth science
paleoclimate
paleoceanography
delta 18O,diatom,null,per mil VSMOW,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
identified diatom,null,null,null,null,paleoceanography,null,null,N,other diatoms
earth science
paleoclimate
paleoceanography
delta 30Si,diatom,null,per mil,null,paleoceanography,null,null,N,per mil NBS28
earth science
paleoclimate
paleoceanography
depth at sample start,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth at sample end,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
lithology
geoscientificInformation
2794800 cal yr BP
1809100 cal yr BP
Complete
50.35
50.35
167.5833
167.5833
-3244
-3244
Ocean
Pacific Ocean
North Pacific Ocean
ODP 882>LATITUDE 50.35>LONGITUDE 167.5833
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Bailey, I., Q. Liu, G.E.A. Swann, Z. Jiang, Y. Sun, X. Zhao,
and A.P. Roberts. 2011.
Iron fertilisation and biogeochemical cycles in the sub-Arctic
northwest Pacific during the late Pliocene intensification
of northern hemisphere glaciation.
Earth and Planetary Science Letters, Vol. 307, Issues 3-4,
15 July 2011, pp. 253-265. doi:10.1016/j.epsl.2011.05.029
Increases in the low-field mass-specific magnetic susceptibility (X),
dropstones and the terrigenous sediment component from Ocean Drilling
Program (ODP) Site 882 (~45°N) have been interpreted to indicate a
major onset of ice-rafting to the sub-Arctic northwest Pacific Ocean
during marine isotope stage (MIS) G6 (from ~2.75 Ma). In contrast,
studies of the terrigenous content of sediments cored downwind of
ODP Site 882 indicate that dust and disseminated volcanic ash
deposition in the sub-Arctic Pacific increased markedly during MIS G6.
To investigate the relative contribution of dust, volcanic ash and ice
rafting to the Pliocene X increase, we present new high-resolution
environmental magnetic and ice-rafted debris records from ODP Sites
882 and 885. Our results demonstrate that the X increase at both sites
across MIS G6 is predominantly controlled by a previously overlooked
mixture of aeolian dust and volcanic ash. Our findings call into
question the reliability of X as a proxy for ice-rafting to the North
Pacific. They also highlight a previously undocumented link between
iron fertilisation and biogeochemical cycling in the North Pacific
at a key stage during intensification of late Pliocene northern
hemisphere glaciation.
STUDY NOTES: Coarse lithic and diatom stable silicon isotope data
for the Plio-Pleistocene from ODP Site 882A, determined
using grain counts and a Finnigan MAT 253 stable isotope
ratio mass spectrometre (using step-wise fluorination,
with silicon collected as SiF4), respectively.
ODP Site 882 lithic count data:
Coarse lithic (>150um) abundance and flux estimates.
Data reported as lithics and lithics plus fresh volcanic
glass. Coarse lithic fluxes were calculated following
Peck et al. (2007). Sedimentation rates were estimated from
the Site 882 astronomical age model (Tiedemann and Haug, 1995)
and shipboard derived dry-bulk density and GRAPE data.
ODP Site 882 diatom isotopes:
d30Si diatom measurements (n=30) for the interval ~2.85-2.55 Ma
at ODP Site 882. Diatoms were extracted using existing techniques
with analysed (75-150um) fractions dominated by two taxa;
Coscinodiscus marginatus (Ehrenb.) and C. radiatus (Ehrenb.)
(Swann, 2010). d30Sidiatom was analysed using step-wise
fluorination at the NERC Isotope Geosciences Laboratory, U.K.,
with silicon collected as SiF4. Measurements were made on a
Finnigan MAT 253 stable isotope ratio mass spectrometre with
values corrected using NIGL within-run laboratory diatom standard
BFCmod against NBS28 (Leng and Sloane, 2008).
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bailey2011/bailey2011.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bailey2011/bailey2011.xls
USA/NOAA
DIF
Version 9.8.4
2019-04-29
2019-04-29