Rigalleau, Vincent; Arz, Helge Wolfgang; Ruggieri, Nicoletta; Lamy, Frank: Terrigenous leaf wax biomarkers (n-alkanes) and mass-accumulation rates of lithic grains from IODP Site 383-U1542 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.992699 (dataset in review)
Abstract:
Here we use counts of ice-rafted debris (IRD counts) mass-accumulation rates (MAR) (counts/cm²/ka), in combination with mass-accumulation rates of terrigenous leaf wax biomarkers synthesized by land plants (long chain n-alkanesMAR; mg/m²/a) from the Chilean margin which provide us information on past extent of the Patagonian ice-sheet over the past 790 000 years.
For the determination of n-alkanes, 5 g of sediment samples were extracted by accelerated solvent extraction (ASE 350, Dionex) with a mixture of dichloromethane and methanol (DCM:MeOH, 9:1, v/v). The resulting total lipid extract was further separated into 3 fractions through column chromatography with silica gel as the stationary phase. n-Alkanes were eluted with Hexane (5 ml). Internal standard (squalane, C36) were added before extraction and served for quantification purposes. The n-alkanes (n-C23+25+27+29+31+33) were analysed by gas chromatography on an Agilent 7890B GC system.Mass accumulation rate (MAR) was calculated by multiplying the concentration of the compounds (ng/g sed.), by the Dry bulk density (DBD) (g/cm³), and the sedimentation rate (m/ka).
Related to:
Rigalleau, Vincent; Arz, Helge Wolfgang; Beech, Nathan; Hagemann, Julia R; Ruggieri, Nicoletta; Wegwerth, Antje; Sadatzki, Henrik; Illing, Matthew; Moy, Christopher M; Winckler, Gisela; Lamy, Frank (accepted): Oceanic forcing of Patagonian Ice Sheet variability over the last eight glacial cycles. Communications Earth & Environment
Coverage:
Median Latitude: -52.704873 * Median Longitude: -75.596233 * South-bound Latitude: -52.705000 * West-bound Longitude: -75.596540 * North-bound Latitude: -52.704800 * East-bound Longitude: -75.595920
Date/Time Start: 2019-07-03T23:30:00 * Date/Time End: 2019-07-08T09:00:00
Minimum DEPTH, sediment/rock: 0.030 m * Maximum DEPTH, sediment/rock: 248.355 m
Event(s):
383-U1542A * Latitude: -52.704800 * Longitude: -75.596540 * Date/Time Start: 2019-07-03T23:30:00 * Date/Time End: 2019-07-05T03:00:00 * Elevation: -1099.8 m * Penetration: 169.5 m * Recovery: 181.74 m * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)
383-U1542C * Latitude: -52.704820 * Longitude: -75.595920 * Date/Time Start: 2019-07-05T21:00:00 * Date/Time End: 2019-07-07T07:15:00 * Elevation: -1100.2 m * Penetration: 234 m * Recovery: 236.86 m * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)
383-U1542D * Latitude: -52.705000 * Longitude: -75.596240 * Date/Time Start: 2019-07-07T07:15:00 * Date/Time End: 2019-07-08T09:00:00 * Elevation: -1100.7 m * Penetration: 213.7 m * Recovery: 205.04 m * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Rigalleau, Vincent | |||
| 2 | Latitude of event 2 | Latitude 2 | Rigalleau, Vincent | |||
| 3 | Longitude of event | Longitude | Rigalleau, Vincent | |||
| 4 | Date/Time of event | Date/Time | Rigalleau, Vincent | |||
| 5 | Elevation of event | Elevation | m | Rigalleau, Vincent | ||
| 6 | Sample code/label | Sample label | Rigalleau, Vincent | DSDP/ODP/IODP sample designation | ||
| 7 | Half | Half | Rigalleau, Vincent | |||
| 8 | Sample comment | Sample comment | Rigalleau, Vincent | |||
| 9 | DEPTH, sediment/rock | Depth sed | m | Rigalleau, Vincent | IODP Depth Scale Terminology | Geocode – CCSF-383-U1542-ABCD-20190710 |
| 10 | AGE | Age | ka BP | Rigalleau, Vincent | Geocode | |
| 11 | Hexatriacontane (peak area) | C36 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 12 | Squalane, C30H62 (peak area) | Squalane peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 13 | n-Alkane C21 (peak area) | C21 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 14 | n-Alkane C22 (peak area) | C22 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 15 | n-Alkane C23 (peak area) | C23 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 16 | n-Alkane C24 (peak area) | C24 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 17 | n-Alkane C25 (peak area) | C25 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 18 | n-Alkane C26 (peak area) | C26 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 19 | n-Alkane C27 (peak area) | C27 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 20 | n-Alkane C28 (peak area) | C28 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 21 | n-Alkane C29 (peak area) | C29 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 22 | n-Alkane C30 (peak area) | C30 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 23 | n-Alkane C31 (peak area) | C31 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 24 | n-Alkane C32 (peak area) | C32 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 25 | n-Alkane C33 (peak area) | C33 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 26 | n-Alkane C34 (peak area) | C34 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 27 | n-Alkane C35 (peak area) | C35 peak area | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 28 | n-Alkanes C23-33, per unit sediment mass | C23-C33/sed | ng/g | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | |
| 29 | Carbon Preference Index, n-Alkanes (C24-C34) | CPI 24-34 | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 30 | Average chain length, n-Alkanes, C25-C33 | ACL 25-33 | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 31 | n-Alkanes C27-33, per unit sediment mass | C27-C33/sed | ng/g | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | |
| 32 | n-Alkanes C29-C31, per unit sediment mass | C29-C31/sed | ng/g | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | |
| 33 | Carbon Preference Index, n-Alkanes (C26-C34) | CPI 26-34 | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 34 | Average chain length, n-Alkanes, C27-C33 | ACL 27-33 | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | ||
| 35 | Density, dry bulk | DBD | g/cm3 | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | |
| 36 | Accumulation rate, mass | MAR | g/cm2/ka | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | |
| 37 | Accumulation rate, n-Alkanes C23-C33 | Acc rate C23-C33 | mg/cm2/ka | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B | |
| 38 | Accumulation rate, n-Alkanes C27-C33 | Acc rate C27-C33 | mg/cm2/ka | Rigalleau, Vincent | Gas chromatograph, Agilent, 7890B |
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:
29293 data points
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