Stamm, Franziska Maria; Pickering, Rebecca A; Frings, Patrick J; Frick, Daniel A; Richoz, Sylvain; Conley, Daniel J (2024): Impact of Diagenesis on the isotope signature of Cretaceous Sponge Spicules from the DSDP Leg 79 Site 545 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974250
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Published: 2024-12-19 • DOI registered: 2025-01-17
Abstract:
Cretaceous siliceous sponge spicules spanning from late Aptian (~ 116-113 Ma) to middle Albian (~109-105 Ma) collected from DSDP Leg 79 Site 545 exhibited two preservation states: visually similar to modern (category 1), or clearly altered towards a milky, translucent composition (category 2). A suite of geochemical and structural analyses (XRD, Raman spectroscopy and FT-IR spectroscopy) was applied to investigate and compare strucutral and chemical changes. The effect of (early) diagenesis on isotope signatures was studied by comparing MC-ICP-MS and SIMS δ30Si and δ18O values of spicules from both categories within single samples.
Supplement to:
Stamm, Franziska Maria; Pickering, Rebecca A; Frings, Patrick J; Frick, Daniel A; Richoz, Sylvain; Conley, Daniel J (2025): Impact of Diagenesis on Biogenic Silica‐ Structural, Chemical, and Isotope Proxies. Journal of Geophysical Research: Biogeosciences, 130(2), e2024JG008160, https://doi.org/10.1029/2024JG008160
Funding:
European Research Council (ERC), grant/award no. 833454: Impact of diatom evolution on the oceans (DEVOCEAN)
Coverage:
Latitude: 33.664300 * Longitude: -9.364700
Date/Time Start: 1981-04-23T00:00:00 * Date/Time End: 1981-04-23T00:00:00
Minimum Elevation: -3142.0 m * Maximum Elevation: -3142.0 m
Event(s):
79-545 * Latitude: 33.664300 * Longitude: -9.364700 * Date/Time: 1981-04-23T00:00:00 * Elevation: -3142.0 m * Penetration: 701 m * Recovery: 352.1 m * Location: North Atlantic/PLATEAU * Campaign: Leg79 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 75 cores; 701 m cored; 0 m drilled; 50.2 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Stamm, Franziska Maria | Project Sample label | ||
| 2 | Core section label | Sec label | Stamm, Franziska Maria | DSDP/ODP/IODP sample designation | Sample label [Leg-Site-Core-Section,Interval in cm] | |
| 3 | Stage | Stage | Stamm, Franziska Maria | |||
| 4 | Water depth description | Water depth descr | Stamm, Franziska Maria | Paleo-water depth (m) | ||
| 5 | Sample type | Samp type | Stamm, Franziska Maria | |||
| 6 | Category | Cat | Stamm, Franziska Maria | preservation states; category 1: visually similar to modern, category 2: altered towards a milky, translucent composition | ||
| 7 | Sponge spiculae, δ30Si | Sponge spic δ30Si | ‰ NBS | Stamm, Franziska Maria | MC-ICP-MS (Thermo Scientific, Neptune) | |
| 8 | Sponge spiculae, δ30Si, standard deviation | Sponge spic δ30Si std dev | ± | Stamm, Franziska Maria | MC-ICP-MS (Thermo Scientific, Neptune) | Two standard deviations |
| 9 | Sponge spiculae, δ29Si | Sponge spic δ29Si | ‰ NBS | Stamm, Franziska Maria | MC-ICP-MS (Thermo Scientific, Neptune) | |
| 10 | Sponge spiculae, δ29Si, standard deviation | Sponge spic δ29Si std dev | ± | Stamm, Franziska Maria | MC-ICP-MS (Thermo Scientific, Neptune) | Two standard deviations |
| 11 | Germanium/Silica ratio | Ge/Si | µmol/mol | Stamm, Franziska Maria | S-(Q)-ICP-MS measurements, Thermo Scientific iCAP-Qc ICP-MS | |
| 12 | δ18O | δ18O | ‰ | Pickering, Rebecca A | Secondary ion mass spectrometry (SIMS), Cameca, IMS1280-HR | vs. VSMOW |
| 13 | δ18O, standard deviation | δ18O std dev | ± | Pickering, Rebecca A | Secondary ion mass spectrometry (SIMS), Cameca, IMS1280-HR | Two standard deviations; vs. VSMOW |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
566 data points