Calcium carbonate global LGM Burial rate data


Global databases of calcium carbonate concentrations and mass accumulation rates in Holocene and last glacial maximum sediments were used to estimate the deep-sea sedimentary calcium carbonate burial rate during these two time intervals. Sparse calcite mass accumulation rate data were extrapolated across regions of varying calcium carbonate concentration using a gridded map of calcium carbonate concentrations and the assumption that accumulation of noncarbonate material is uncorrelated with calcite concentration within some geographical region. Mean noncarbonate accumulation rates were estimated within each of nine regions, determined by the distribution and nature of the accumulation rate data. For core-top sediments the regions of reasonable data coverage encompass 67% of the high-calcite (>75%) sediments globally, and within these regions we estimate an accumulation rate of 55.9 ± 3.6 x 1011 mol/yr. The same regions cover 48% of glacial high-CaCO3 sediments (the smaller fraction is due to a shift of calcite deposition to the poorly sampled South Pacific) and total 44.1 ± 6.0 x 1011 mol/yr. Projecting both estimates to 100 % coverage yields accumulation estimates of 8.3 x 1012 mol/yr today and 9.2 x 1012 mol/yr during glacial time. This is little better than a guess given the incomplete data coverage, but it suggests that glacial deep sea calcite burial rate was probably not considerably faster than today in spite of a presumed decrease in shallow water burial during glacial time.

Supplement to: Catubig, Nina R; Archer, David E; Francois, Roger; deMenocal, Peter B; Howard, William R; Yu, Ein-Fen (1998): Global deep-sea burial rate of calcium carbonate during the last glacial maximum. Paleoceanography, 13(3), 298-310

Related Identifier IsSupplementTo
Metadata Access
Creator Catubig, Nina R; Archer, David E; Francois, Roger; deMenocal, Peter B (ORCID: 0000-0002-7191-717X); Howard, William R; Yu, Ein-Fen
Publisher PANGAEA
Publication Year 1998
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (-0.050W, -77.441S, 4.522E, 72.183N); North Pacific/PLAIN; North Pacific/RIDGE; North Pacific; North Pacific/BASIN; North Pacific/CONT RISE; North Pacific/ABYSSAL FLOOR; South Pacific/TRENCH; Indian Ocean//BASIN; Antarctic Ocean/BASIN; Antarctic Ocean/CONT RISE; Antarctic Ocean/PLAIN; Antarctic Ocean; South Pacific/BASIN; North Pacific/Philippine Sea/RIDGE; North Pacific/Philippine Sea/TRENCH; North Pacific/Philippine Sea/TROUGH; North Pacific/SEAMOUNT; North Pacific/TRENCH; North Pacific/SEDIMENT POND; North Pacific/PLATEAU; North Pacific/Gulf of California/CONT RISE; North Pacific/TROUGH; Weddell Sea; South Atlantic Ocean; South Indian Ridge, South Indian Ocean; Lakshadweep Sea; Arabian Sea; Indian Ocean; Prydz Bay; North Atlantic; South Atlantic; South Indian Ocean; South Pacific; Southern East Pacific Rise; Equatorial Pacific; off NW Africa; Atlantic Ocean; Pacific Ocean; India
Temporal Coverage Begin 1947-10-06T10:00:00Z
Temporal Coverage End 1988-04-19T23:30:00Z