Sindlev, Marco B; Balmonte, John Paul; Wenzhöfer, Frank; Xiao, Wenjie; Stief, Peter; Oguri, Kazumasa; Tsuchiya, M; Yokoyama, Yusuke; Rudra, Arka; Canfield, Donald E; Sanei, Hamed; Brandt, Angelika; Glud, Ronnie N (2025): Sedimentological, mineralogical, and biogeochemical characteristics in the Aleutian Trench and adjacent abyssal plains [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.984610
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Published: 2025-08-28 • DOI registered: 2025-09-26
Abstract:
To understand sedimentological, mineralogical and benthic biogeochemical characteristics of the Aleutian Trench study area, datasets of grain size fractions, porosity and density, ratio of quartz to plagioclase, total organic carbon (TOC), δ13C, Δ14C, Chlorophyll a (Chl a), total photopigments, hydrogen and oxygen indices (H- and O-indices), dissolved inorganic carbon (DIC), ammonium (NH4+), 210Pbex, 137Cs and 210Pbex inventory were analysed from retrieved marine sediment core collected from 13 different stations. The marine sediment cores were retrieved using a Multiple Corer (MUC) during the Aleutian Trench Biodiversity Studies (AleutBio) expedition (RV Sonne, SO293), which took place from 24/07/2022 to 06/09/2022. Retrieved sediment cores were generally sectioned in 1 cm intervals in the upper 10 cm of core depth, 2.5 cm intervals from 10-20 cm and ultimately 5 cm intervals for the remaining core interval. Sediment slices were generally stored at -20 °C until subsequent analysis. All measurements were processed following standardized protocols described in Sindlev et al. (in review) and provides a baseline for investigating benthic processes and depositional characteristics in the study area.
Related to:
Sindlev, Marco B; Balmonte, John Paul; Wenzhöfer, Frank; Xiao, Wenjie; Stief, Peter; Oguri, Kazumasa; Tsuchiya, M; Yokoyama, Yusuke; Rudra, Arka; Canfield, Donald E; Sanei, Hamed; Brandt, Angelika; Glud, Ronnie N (submitted): The benthic environment of the Aleutian Trench region: Sediment provenance, organic carbon sources and deposition dynamics.
Funding:
Danish National Research Foundation (DG), grant/award no. DNRF145: Danish Center for Hadal Research, HADAL
Coverage:
Median Latitude: 52.154526 * Median Longitude: -166.225662 * South-bound Latitude: 50.632200 * West-bound Longitude: -170.478400 * North-bound Latitude: 53.600483 * East-bound Longitude: -161.214267
Date/Time Start: 2022-08-02T13:49:00 * Date/Time End: 2022-08-30T16:47:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.375 m
Event(s):
SO293_4-7 * Latitude: 51.672250 * Longitude: -170.478400 * Date/Time: 2022-08-02T13:49:00 * Elevation: -4642.1 m * Location: North Pacific Ocean * Campaign: SO293 (AleutBio) * Basis: Sonne_2 * Method/Device: MultiCorer (MUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Sindlev, Marco B | |||
| 2 | Site | Site | Sindlev, Marco B | |||
| 3 | Latitude of event | Latitude | Sindlev, Marco B | |||
| 4 | Longitude of event | Longitude | Sindlev, Marco B | |||
| 5 | Date/Time of event | Date/Time | Sindlev, Marco B | |||
| 6 | Elevation of event | Elevation | m | Sindlev, Marco B | ||
| 7 | Depth, top/min | Depth top | m | Sindlev, Marco B | ||
| 8 | Depth, bottom/max | Depth bot | m | Sindlev, Marco B | ||
| 9 | DEPTH, sediment/rock | Depth sed | m | Sindlev, Marco B | Geocode | |
| 10 | Sample type | Samp type | Sindlev, Marco B | Qualitative description of the distribution shape and sorting | ||
| 11 | Sediment type | Sediment | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | Dominating grain size class based on the relative proportions of clay, silt and sand | |
| 12 | Sediment type | Sediment | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | Sediment classification based on grain size assigned by GRADISTAT | |
| 13 | Grain size, mean | Grain size mean | µm | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | Average diameter of grains [µm] |
| 14 | Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand | 500-250 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 15 | Size fraction 0.250-0.125 mm, 2.0-3.0 phi, fine sand | 250-125 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 16 | Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand | 125-63 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 17 | Size fraction 0.063-0.031 mm, very coarse silt | 63-31 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 18 | Size fraction 0.031-0.016 mm, coarse silt | 31-16 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 19 | Size fraction 0.016-0.008 mm, 6.0-7.0 phi, medium silt | 16-8 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 20 | Size fraction 0.008-0.004 mm, 7.0-8.0 phi, fine silt | 8-4 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 21 | Size fraction 0.004-0.002 mm, 8.0-9.0 phi, very fine silt | 4-2 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 22 | Size fraction < 0.002 mm, clay | <2 µm | % | Sindlev, Marco B | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 23 | Porosity | Poros | % vol | Glud, Ronnie N | ||
| 24 | Density, wet bulk | WBD | g/cm3 | Glud, Ronnie N | X-ray diffraction (RIGAKU Miniflex600) | |
| 25 | Quartz/Plagioclase ratio | Qz/Pl | Sindlev, Marco B | Elemental analyzer connected to an isotope ratio mass spectrometer, Isoprime, UK | Relative ratio of quartz to plagioclase determined from XRD-spectra | |
| 26 | Carbon, organic, total | TOC | % | Xiao, Wenjie | Elemental analyzer connected to an isotope ratio mass spectrometer, Isoprime, UK | TOC-content was calculated from the trapped CO2 based on replicate analysis |
| 27 | δ13C | δ13C | ‰ PDB | Xiao, Wenjie | Reported in per mil (‰) relative to the Vienna Peedee belemnite (VPDB) standard | |
| 28 | Δ14C | Δ14C | ‰ | Yokoyama, Yusuke | ||
| 29 | Chlorophyll a, per unit sediment mass | Chl a/sed | µg/g | Stief, Peter | Ultra Performance Liquid Chromatography (UPLC), Waters equipped with an Acquity UPLC BEH C18 column (1.7 µm, 2.1x150 mm) | |
| 30 | Pigment concentration in sediment | Pigm conc | ng/g | Stief, Peter | Ultra Performance Liquid Chromatography (UPLC), Waters equipped with an Acquity UPLC BEH C18 column (1.7 µm, 2.1x150 mm) | |
| 31 | Hydrogen index, mass HC, per unit mass total organic carbon | HI, HC/TOC | mg/g | Sindlev, Marco B | HAWK Pyrolysis | |
| 32 | Oxygen index, mass CO2, per unit mass total organic carbon | OI, CO2/TOC | mg/g | Sindlev, Marco B | HAWK Pyrolysis | |
| 33 | Carbon, inorganic, dissolved | DIC | mmol/l | Sindlev, Marco B | Flow injection analysis (Hall and Aller 1992) | Introduced samples induce conductivity measured by a conductivity sensor and were calibrated using a standard of buffered sodium bicarbonate with a concentration of 2 mM DIC |
| 34 | Ammonium | [NH4]+ | µmol/l | Sindlev, Marco B | Fluorometry (Holmes et al. 1999) | Fluorescence was measured as relative fluorescence unit (RFU) and calibrated against prepared standards of ammonium chloride |
| 35 | Lead-210 excess activity | 210Pb xs act | Bq/g | Oguri, Kazumasa | High-Purity Germanium Detector (HPGe), GWL120230 well type, AMETEK ORTEC | 210Pbex is derived to subtract 214Pb from 210Pb on assumption of secular equlibrium between 226Ra and 222Rn in the sediments. |
| 36 | Caesium-137 | 137Cs | Bq/g | Oguri, Kazumasa | High-Purity Germanium Detector (HPGe), GWL120230 well type, AMETEK ORTEC | Concentration of the radioactive isotope cesium-137, expressed in becquerels per gram |
| 37 | Lead-210 excess | 210Pb xs | Bq/cm2 | Oguri, Kazumasa | High-Purity Germanium Detector (HPGe), GWL120230 well type, AMETEK ORTEC | 210Pbex inventory in sediments |
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:
5631 data points
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