Eastern Tropical Pacific CaCO3 Deposition Data

NOAA Paleoclimatology Program, NCDC Paleoclimatology Branch

PALEOCEANOGRAPHY

Eastern Tropical Pacific CaCO3 Deposition Data

Lyle, M., A.C. Mix, and N.G. Pisias. 2002. Patterns of CaCO3 deposition in the eastern tropical Pacific Ocean for the last 150 kyr: Evidence for a southeast Pacific depositional spike during marine isotope stage (MIS) 2. Paleoceanography 17(2).

Data Coverage	North: 8.8 * South: -6.63
	West: -138.98 * East: -82.07
	Altitude: -4287 m

Start Year: 752050 14C yr BP * End Year: -7800 14C yr BP

Data: Please Cite Data Contributors!

lyle2002
  inmd114p-tab.txt
  r13-110l-tab.txt
  r13-115l-tab.txt
  r13-138l-tab.txt
  rc10-62l-tab.txt
  v19-27l-tab.txt
  v19-28l-tab.txt

  v19-28l-tab.txt
  v19-29l-tab.txt
  v19-30l-tab.txt
  w84-14gc-tab.txt
  y69-106-tab.txt
  y69-71l-tab.txt
  y71-101l-tab.txt
  y71-3-2l-tab.txt

Summary:

We constructed biogenic mass accumulation rate (MAR) time series for eastern Pacific core transects across the equator at ~105° and ~85°W and along the equator from 80° to 140°W. We used empirical orthogonal function (EOF) analysis to extract spatially coherent patterns of CaCO3 deposition for the last 150 kyr. EOF mode 1 (51% variance) is a CaCO3 MAR spike centered in marine oxygen isotope stage 2 (MIS 2) found under the South Equatorial Current. EOF mode 2 (19% of variance) is high north of the equator. EOF mode 3 (9% of variance) is an east-west mode centered along the North Equatorial Counter Current. The MIS 2 CaCO3 spike is the largest event in the eastern Pacific for the last 150 kyr: CaCO3 MARs are 2-3 times higher at 18 ka than elsewhere in the record, including MIS 6. It is caused by high CaCO3 production rather than minimal dissolution. EOF 2, while it resembles deep water flow patterns, nevertheless, shows coherence to Corg deposition and is probably also driven by CaCO3 production.
More Info on Paleoceanography Data

Parameters:

delta C13 PDB (Cibicidoides wuellerstorfi); delta C13 PDB (Globigerinoides ruber); radiocarbon years before 1950AD; Dry Bulk Density (g/cm^3); Opal weight percent; delta O18 PDB (Globigerinoides ruber); delta O18 PDB (Neogloboquadrina dutertrei); delta O18 PDB (Cibicidoides spp.); Calcium carbonate weight percent; Organic Carbon weight percent; delta O18 PDB (Cibicidoides wuellerstorfi); Quartz weight percent; Radiocarbon ages; delta C13 PDB (Neogloboquadrina dutertrei); delta C13 PDB (Uvigerina sp.); delta O18 PDB (Uvigerina sp.); delta C13 PDB (Cibicidoides spp.)

Complete XML Record:

noaa-ocean-2629 (Last Revised: 2008-04-10 )

	DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce ) 325 Broadway, E/CC23 Boulder, CO 80305 USA
http://www.ncdc.noaa.gov/paleo/
E-mail: bruce.a.bauer@noaa.gov
E-mail: paleo@noaa.gov
Phone: 303-497-6280 Fax: 303-497-6513