Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

deLong, Kimberly; Blackburn, Terrence; Caissie, Beth; Addison, Jason A; Stroynowski, Zuzanna N; Reimi Sipala, Maria; Marcantonio, Franco; Ravelo, Ana Christina (2025): Silicon isotopes from IODP Site 323-U1340 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974823

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2025-02-13 • DOI registered: 2025-03-14

RIS CitationBibTeX Citation ShareShow MapGoogle Earth

Abstract:
The Bølling-Allerød deglacial event is marked by high diatom productivity and opal deposition throughout the subarctic Pacific. To investigate the cause of this event, we quantified several productivity-related sedimentary parameters that reflect the near-surface biogeochemistry from the Integrated Ocean Drilling Program (IODP) Site 323-U1340 in the Bering Sea. Silicon isotopes (δ29Si and δ30Si) from single-genus Coscinodiscus diatom frustules. Diatom silicon isotope values were generated in the Keck Laboratory at the University of California, Santa Cruz using the following methods. Freeze-dried samples were washed on a 63μm sieve to remove clays and dried in a 55°C oven. Samples were then cleaned with the M2 method, without the Calgon step, in non-glass containers and again oven-dried. To isolate a single diatom genus, samples were dry-sieved and ice rafted debris, radiolarians, spicules, and other genera were removed from the 63-125 μm portion by picking under a microscope and visually confirmed to be >99% Coscinodiscus specimens. Coscinodiscus species present were >95% Coscinodiscus marginatus with occasional Coscinodiscus oculus-iridis and Coscinodiscus radiatus. To dissolve samples, ≤0.002 g was transferred to 100 μL of 10 M NaOH in screw-top Teflon vials and reacted in Parr vessels at 200°C for three days. Samples were transferred to BioRad 50W X8 cation exchange columns previously cleaned with HCl and Milli-Q water (after Georg et al., 2006; doi:10.1016/j.chemgeo.2006.06.006), and eluted in Milli-Q water. Intensities of 28Si, 29Si and 30Si were measured using standard-sample bracketing on a Neptune MC ICP-MS at high resolution equipped with an Apex Omega desolvating nebulizer. All values are reported vs. NBS 28.
Keyword(s):
Age model; biogenic opal; Diatom assemblage; nitrogen content; Silicon isotopes; Uranium-Thorium
Supplement to:
deLong, Kimberly; Blackburn, Terrence; Caissie, Beth; Addison, Jason A; Stroynowski, Zuzanna N; Sipala, M R; Marcantonio, Franco; Ravelo, Ana Christina (2025): Bølling-Allerød Productivity in the Subarctic Pacific Driven by Seasonal Upwelling. Geophysical Research Letters, 52(8), e2024GL109614, https://doi.org/10.1029/2024GL109614
Coverage:
Median Latitude: 53.398896 * Median Longitude: -179.521415 * South-bound Latitude: 53.396673 * West-bound Longitude: -179.521623 * North-bound Latitude: 53.400013 * East-bound Longitude: -179.521000
Date/Time Start: 2009-07-22T00:00:00 * Date/Time End: 2009-07-22T00:00:00
Minimum Elevation: -1294.7 m * Maximum Elevation: -1293.4 m
Event(s):
323-U1340  * Latitude: 53.400000 * Longitude: -179.521000 * Date/Time: 2009-07-22T00:00:00 * Elevation: -1294.0 m * Location: Bering Sea * Campaign: Exp323 (Bering Sea Paleoceanography) * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE)
323-U1340A  * Latitude: 53.400013 * Longitude: -179.521622 * Elevation: -1294.7 m * Recovery: 535.91 m * Campaign: Exp323 (Bering Sea Paleoceanography) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 71 cores; 604.5 m cored; 89 % recovered
323-U1340D  * Latitude: 53.396673 * Longitude: -179.521623 * Elevation: -1293.4 m * Recovery: 27.23 m * Campaign: Exp323 (Bering Sea Paleoceanography) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 26.3 m cored; 104 % recovered
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventdeLong, Kimberly
2 Sample code/labelSample labeldeLong, KimberlyDSDP/ODP/IODP sample designation
3 HalfHalfdeLong, Kimberly
4 Depth, compositeDepth compmcddeLong, KimberlyIODP Depth Scale Terminology
5 AGEAgeka BPdeLong, KimberlyAge, 14C calibrated, CALIB (Stuiver & Reimer, 1993)Geocode
6 δ29Siδ29Si‰ NBSdeLong, KimberlyInductively coupled plasma mass spectrometer (ICP-MS), ThermoFisher Scientific, Neptune Plus; coupled with Apex Omega desolvating nebulizer
7 δ29Si, standard deviationδ29Si std dev±deLong, KimberlyInductively coupled plasma mass spectrometer (ICP-MS), ThermoFisher Scientific, Neptune Plus; coupled with Apex Omega desolvating nebulizer
8 δ30Siδ30Si‰ NBSdeLong, KimberlyInductively coupled plasma mass spectrometer (ICP-MS), ThermoFisher Scientific, Neptune Plus; coupled with Apex Omega desolvating nebulizer
9 δ30Si, standard deviationδ30Si std dev±deLong, KimberlyInductively coupled plasma mass spectrometer (ICP-MS), ThermoFisher Scientific, Neptune Plus; coupled with Apex Omega desolvating nebulizer
10 ReplicatesRepl#deLong, Kimberly
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
336 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Sample label		3 
Half		4 
Depth comp [mcd]		5 
Age [ka BP]		6 
δ29Si [‰ NBS]		7 
δ29Si std dev [±]		8 
δ30Si [‰ NBS]		9 
δ30Si std dev [±]		10 
Repl [#]
323-U1340A 323-U1340A-1H-1,0-2Archive (A)-0.0505005.69190.680.041.350.04863
323-U1340A323-U1340A-1H-1,10-12Archive (A)0.0495006.21230.640.121.270.05065
323-U1340A323-U1340A-1H-1,30-32Archive (A)0.2495007.25300.730.051.440.05483
323-U1340A323-U1340A-1H-1,40-42Archive (A)0.3495007.77340.660.191.440.05854
323-U1340A323-U1340A-1H-1,65-67Archive (A)0.5995009.07420.680.021.430.02323
323-U1340A323-U1340A-1H-1,75-77Archive (A)0.6995009.59460.790.001.550.03363
323-U1340A323-U1340A-1H-1,80-82Archive (A)0.7495009.85480.780.051.580.05804
323-U1340A323-U1340A-1H-1,85-87Archive (A)0.79950010.11500.780.021.540.05154
323-U1340A323-U1340A-1H-1,90-91Archive (A)0.84450010.34910.870.061.700.06104
323-U1340A323-U1340A-1H-1,98-99Archive (A)0.92450010.76540.770.041.500.08314
323-U1340A323-U1340A-1H-1,102-103Archive (A)0.96450010.97350.730.061.630.07273
323-U1340A323-U1340A-1H-1,108-109Archive (A)1.02450011.28580.800.051.510.09305
323-U1340A323-U1340A-1H-1,111-112Archive (A)1.05450011.44190.710.131.530.07994
323-U1340A323-U1340A-1H-1,114-115Archive (A)1.08450011.59800.760.011.520.03113
323-U1340A323-U1340A-1H-1,117-118Archive (A)1.11450011.93000.700.041.410.00803
323-U1340A323-U1340A-1H-1,119-120Archive (A)1.13450012.21700.790.171.470.05574
323-U1340A323-U1340A-1H-1,120-121Archive (A)1.14450012.35000.800.041.600.08734
323-U1340A323-U1340A-1H-1,122-123Archive (A)1.16450012.63000.830.031.610.07046
323-U1340A323-U1340A-1H-1,125-126Archive (A)1.19450012.92590.800.041.540.07315
323-U1340A323-U1340A-1H-1,133-134Archive (A)1.27450013.38430.810.021.530.00643
323-U1340A323-U1340A-1H-1,137-138Archive (A)1.31450013.61350.710.011.390.02053
323-U1340A323-U1340A-1H-1,140-141Archive (A)1.34450013.78540.850.031.600.03533
323-U1340A323-U1340A-1H-1,142-143Archive (A)1.36450013.90000.820.011.570.02333
323-U1340A323-U1340A-1H-1,144-145Archive (A)1.38450013.92300.810.091.460.03583
323-U1340A323-U1340A-1H-1,146-147Archive (A)1.40450013.95440.820.111.620.05713
323-U1340A323-U1340A-1H-1,147-148Archive (A)1.41450013.97010.760.021.490.05233
323-U1340A323-U1340A-1H-2,2-3Archive (A)1.46450014.04850.860.091.520.05484
323-U1340A323-U1340A-1H-2,8-9Archive (A)1.52450014.14270.770.051.520.02533
323-U1340A323-U1340A-1H-2,12-13Archive (A)1.56450014.20540.810.051.540.05956
323-U1340A323-U1340A-1H-2,20-21Archive (A)1.64450014.33090.810.051.580.04924
323-U1340A323-U1340A-1H-2,32-33Archive (A)1.76450014.51920.900.011.680.02823
323-U1340A323-U1340A-1H-2,40-41Archive (A)1.84450014.64570.750.001.640.03343
323-U1340A323-U1340A-1H-2,45-47Archive (A)1.89950014.75010.800.021.520.08434
323-U1340A323-U1340A-1H-2,50-52Archive (A)1.94950014.84500.700.041.400.04354
323-U1340A323-U1340A-1H-2,55-57Archive (A)1.99950014.93990.720.051.440.11355
323-U1340A323-U1340A-1H-2,75-77Archive (A)2.19950015.31960.710.011.470.05413
323-U1340A323-U1340A-1H-2,95-97Archive (A)2.39950015.69920.750.111.530.10955
323-U1340A323-U1340A-1H-2,135-137Archive (A)2.79950016.45860.640.191.360.06214
323-U1340A323-U1340A-1H-3,25-27Archive (A)3.19950017.21790.980.031.860.05154
323-U1340D 323-U1340D-1H-3,40-42Working (W)3.65224318.09710.700.091.350.07104
323-U1340D323-U1340D-1H-3,86-88Working (W)4.13224318.94130.820.021.610.07814
323-U1340D323-U1340D-1H-3,112-114Working (W)4.37224319.41840.820.021.600.07324