Novak, Joseph B; Caballero-Gill, Rocio P; Rose, Rebecca; Herbert, Timothy D; Dowsett, Harry J (2024): Alkenone concentration of ODP Site 145-883 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967364, In: Novak, JB et al. (2024): Multiproxy paleoceanographic dataset from ODP sites 883 and 887 and compiled mid Piacenzian benthic foraminiferal stable carbon isotope data from 23 IODP/ODP/DSDP sites [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.967342
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Abstract:
Here we present concentration and mass accumulation rate of C37 alkenones in discrete samples from ODP site 883. Approximately 1–4 g of sediment was freeze-dried and homogenized prior to extraction with a Dionex 200 Accelerated Solvent Extractor using 100% dichloromethane. Prior to quantification, the total lipid extract was evaporated under N2 and redissolved in 200 μL toluene spiked with n-hexatriacontane (C36) and n-heptatriacontane (C37) standards. Alkenone concentrations were calculated by comparison of C37:2 and C37:3 alkenone peak areas to the peak areas of the C36 and C37 internal standards determined by an Agilent Technologies 6890 gas chromatograph flame ionization detector (GC-FID), with an Agilent Technologies DB-1 column (60 m, 0.32 mm diameter, 0.10 mm film thickness). 1 μL of total lipid extract was injected at an initial temperature of 90°C, increasing to 255°C at 40°C/min, then to 300°C at 1°C/min, ramping to 320°C at 10°C/min, and ending with an isothermal hold at 320°C for 11 minutes. 228 of 504 samples were analyzed at least in duplicate, yielding a mean standard deviation of 0.017 pmol•mg-1 or 9.2 ng*g-1.
Keyword(s):
Project(s):
Ocean Drilling Program (ODP)
Funding:
National Science Foundation (NSF), grant/award no. 1545859: PIRE: DUST stimulated drawn-down of atmospheric CO2 as a trigger for Northern Hemisphere Glaciation
National Science Foundation (NSF), grant/award no. 1602331: Collaborative Research: Did the SE Pacific Gyre become a Hot Spot for N2 Fixation during Dusty Glacial Conditions?
Coverage:
Median Latitude: 51.198600 * Median Longitude: 167.768750 * South-bound Latitude: 51.198500 * West-bound Longitude: 167.768700 * North-bound Latitude: 51.198700 * East-bound Longitude: 167.768800
Date/Time Start: 1992-08-09T09:40:00 * Date/Time End: 1992-08-13T15:15:00
Minimum DEPTH, sediment/rock: 83.97 m * Maximum DEPTH, sediment/rock: 168.17 m
Event(s):
145-883B * Latitude: 51.198500 * Longitude: 167.768800 * Date/Time Start: 1992-08-09T09:40:00 * Date/Time End: 1992-08-12T09:00:00 * Elevation: -2395.0 m * Penetration: 840.7 m * Recovery: 695.41 m * Location: North Pacific Ocean * Campaign: Leg145 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 88 cores; 840.7 m cored; 0 m drilled; 82.7 % recovery
145-883C * Latitude: 51.198700 * Longitude: 167.768700 * Date/Time Start: 1992-08-12T09:00:00 * Date/Time End: 1992-08-13T15:15:00 * Elevation: -2397.0 m * Penetration: 355 m * Recovery: 344.3 m * Location: North Pacific Ocean * Campaign: Leg145 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 355 m cored; 0 m drilled; 97 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Novak, Joseph B | |||
| 2 | Sample code/label | Sample label | Novak, Joseph B | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Novak, Joseph B | Geocode – top mbsf | |
| 4 | Depth, composite | Depth comp | mcd | Novak, Joseph B | ||
| 5 | AGE | Age | ka BP | Novak, Joseph B | Geocode | |
| 6 | Sedimentation rate | SR | cm/ka | Novak, Joseph B | ||
| 7 | Alkenone, C37 per unit sediment mass | C37/sed | pmol/mg | Novak, Joseph B | Gas Chromatograph, Agilent 7890 | |
| 8 | Alkenone, C37 per unit sediment mass | C37/sed | µg/g | Novak, Joseph B | Gas Chromatograph, Agilent 7890 | |
| 9 | Alkenone, C37, standard deviation | C37 std dev | ± | Novak, Joseph B | pmol/mg | |
| 10 | Alkenone, C37, standard deviation | C37 std dev | ± | Novak, Joseph B | µg/g | |
| 11 | Accumulation rate, alkenone C37 | Acc rate alk | pmol/cm2/ka | Novak, Joseph B | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2920 data points
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