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Borrelli, Chiara; Allen, Katherine A; Trendell, Aidan; Gomez Lawson, Juliette; Westerhold, Thomas: Late Eocene to early Oligocene accumulation rates from ODP Hole 208-1262B (Walvis Ridge, eastern South Atlantic) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997729 (dataset in review)

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Abstract:
Here, we present accumulation rates of carbonate (CAR), foraminifera (MARforam), and coccolithophores (MARcocco), as well as benthic foraminifera accumulation rates (BFAR) from Ocean Drilling Program (ODP) Sites 1262 (Hole B). Mass accumulation rates were calculated as the product of linear sedimentation rate and dry bulk density as described in Lyle et al. (2005, doi:10.2973/odp.proc.sr.199.219.2005). Because of the limited data available from Hole B, density correlations were built using data from Site 1262 Hole A. Carbonate accumulation rates were calculated by multiplying calcium carbonate weight percent with mass accumulation rates. Calcium carbonate weight percent was measured at the Lamont-Doherty Earth Observatory of Columbia University (New York, NY) using an UIC inc. CM5012 CO2 coulometer with an Automate FX Inc. automated sample acidification and delivery carousel. For the analysis, a carbonate standard was used (GFS Chemicals Calcium Carbonate Standard - ACS). Accumulation rates of foraminifera and coccolithophores were calculated following Si & Rosenthal (2019, doi:10.1038/s41561-019-0450-3). Benthic foraminiferal accumulation rates were determined as described in Herguera and Berger (1991, doi:10.1130/0091-7613(1991)019<1173:PFBFAG>2.3.CO;2). Sample ages were based on the correlation between Site 1262 and Site 1263 (where an astronomically age model was available), as described in Westerhold et al. (2020, doi:10.1126/science.aba6853).
Keyword(s):
accumulation rates; Cenozoic; Eocene; ODP; Oligocene; Site 1262; Walvis Ridge
References:
Herguera, Juan-Carlos; Berger, Wolfgang H (1991): Paleoproductivity from benthic foraminifera abundance: glacial to postglacial change in the west-equatorial Pacific. Geology, 19(12), 1173-1176, https://doi.org/10.1130/0091-7613(1991)019%3C1173:PFBFAG%3E2.3.CO;2
Lyle, Mitchell W; Olivarez Lyle, Annette; Backman, Jan; Tripati, Aradhna K (2005): Biogenic sedimentation in the Eocene equatorial Pacific-the stuttering greenhouse and Eocene carbonate compensation depth. In: Wilson, PA; Lyle, M; Firth, JV (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 199, 1-35, https://doi.org/10.2973/odp.proc.sr.199.219.2005
Si, Weimin; Rosenthal, Yair (2019): Reduced continental weathering and marine calcification linked to late Neogene decline in atmospheric CO2. Nature Geoscience, 12(10), 833-838, https://doi.org/10.1038/s41561-019-0450-3
Coverage:
Latitude: -27.185830 * Longitude: 1.577000
Date/Time Start: 2003-03-26T12:40:00 * Date/Time End: 2003-03-27T21:25:00
Minimum DEPTH, sediment/rock: 70.530 m * Maximum DEPTH, sediment/rock: 72.910 m
Event(s):
208-1262B * Latitude: -27.185830 * Longitude: 1.577000 * Date/Time Start: 2003-03-26T12:40:00 * Date/Time End: 2003-03-27T21:25:00 * Elevation: -4753.6 m * Penetration: 209.9 m * Recovery: 212.53 m * Location: Walvis Ridge, Southeast Atlantic Ocean * Campaign: Leg208 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 209.9 m cored; 0 m drilled; 101.3 % recovery
Comment:
Projects
* Investigating the influence of surface primary productivity and ocean alkalinity on carbonate burial during the Eocene/Oligocene Transition (~34.5-33.5 Ma), Award: US Science Support Program - Novel Project Award
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelBorrelli, ChiaraDSDP/ODP/IODP sample designation
2HalfHalfBorrelli, ChiaraCore half
3Sample commentSample commentBorrelli, Chiara
4DEPTH, sediment/rockDepth sedmBorrelli, ChiaraIODP Depth Scale TerminologyGeocode – msbf
5Depth, compositeDepth compmcdBorrelli, ChiaraIODP Depth Scale Terminology
6AgeAgeMaBorrelli, ChiaraCENOGRID according to Westerhold et al. (2020)
7Dry massDry mgBorrelli, ChiaraDigital scale
8Size fraction > 0.020 mm>20 µmgBorrelli, ChiaraDigital scale
9Size fraction < 0.020 mm<20 µmgBorrelli, ChiaraDigital scale
10Size fraction > 0.020 mm>20 µm%Borrelli, ChiaraCalculated[wt %]
11Size fraction < 0.020 mm<20 µm%Borrelli, ChiaraCalculated[wt %]
12Calcium carbonateCaCO3%Borrelli, ChiaraCO2 coulometer, UIC inc., CM5012Whole sample
13Gamma ray attenuationGRABorrelli, ChiaraExtracted from the LIMS database
14Density, wet bulkWBDg/cm3Borrelli, ChiaraCalculated, according to Lyle et al. (2005)
15Density, dry bulkDBDg/cm3Borrelli, ChiaraCalculated, according to Lyle et al. (2005)
16Linear sedimentation rateLSRcm/kaBorrelli, ChiaraCalculated, according to Lyle et al. (2005)
17Accumulation rate, massMARmg/cm2/kaBorrelli, ChiaraCalculated, according to Lyle et al. (2005)
18Accumulation rate, calcium carbonateCaCO3 ARmg/cm2/kaBorrelli, ChiaraCalculated, see abstract
19Accumulation rate, foraminiferaAcc rate foramsmg/cm2/kaBorrelli, ChiaraCalculated, according to Si and Rosenthal (2019)Total
20Accumulation rate, coccolithsAcc rate coccomg/cm2/kaBorrelli, ChiaraCalculated, according to Si and Rosenthal (2019)
21Accumulation rate, number of benthic foraminiferaBFAR#/cm2/kaBorrelli, ChiaraCalculated, according to Herguera and Berger (1991)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
585 data points

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