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Zhang, Yang; Drury, Anna Joy; Wang, Wanzhang; von Dobeneck, Tilo; Frederichs, Thomas; Yuan, Wei: Magnetostratigraphic and rock magnetic results from postcruise investigation of IODP Site 378-U1553, southern Campbell Plateau [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.991458 (dataset in review)

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Abstract:
We present the rock magnetic and paleomagnetic data set from Site U1553 (including Holes A, B & E) recovered during IODP Expedition 378 in the southern Campbell Plateau (South Pacific) (Röhl et al., 2022, https://doi.org/10.14379/iodp.proc.378.2022). Stepwise natural remanent magnetization (NRM) demagnetization were conducted on ~600 discrete paleomagnetic samples and the Characteristic Remanent Magnetization (ChRM) directions and intensities were determined. All samples were assigned a polarity rating follow the protocol of Zhang and Ogg (2003) (https://doi.org/10.1016/S0098-3004(03)00034-7). Fifteen magnetozones were identified and compared to the Geomagnetic Polarity Time Scale (GPTS2020; DOI: 10.1016/C2020-1-02369-3). This paleomagnetic age model agrees with microbiostratigraphy age model of Site U1553. Rock magnetic data, from the isothermal remanent magnetization (IRM), first order reversal curve (FORC), and low temperature thermomagnetic measurements are used to identify the iron minerals in the sediments. IRM unmixing and endmember analysis were performed, the results of which align with other rock magnetic measurements and show four main components of low to very high coercivity. The primary magnetization carrier was titanomagnetite. We also did statistical analysis of sedimentary and diagentic factors for NRM interpretability to assess the to which extent the sedimentary and diagentic affect the magnetization signals in the sediments.
Keyword(s):
Diagenesis; IODP 378; Magnetostratigraphy; rock magnetism; South Pacific
Supplement to:
Zhang, Yang; Drury, Anna Joy; Wang, Wanzhang; von Dobeneck, Tilo; Frederichs, Thomas; Yuan, Wei (submitted): Late Eocene to Early Oligocene (36–26 Ma) Rock Magnetism and Magnetostratigraphy of IODP Site U1553, Southwestern Pacific: Defying the Challenges of Carbonate Dilution and Reductive Diagenesis. Geochemistry, Geophysics, Geosystems
Project(s):
International Ocean Drilling Programme (IODP3)
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 5459347: SPP 527: Bereich Infrastruktur - "International Ocean Discovery Program" (IODP)
German Research Foundation (DFG), grant/award no. 467394398: Establishing a magnetofossil-based paleoclimate proxy across the Eocene–Oligocene Transition in the South Pacific and the South China Sea (IODP Sites U1553 and U1501)
National Natural Science Foundation of China (NSFC), grant/award no. 42576262
Coverage:
Median Latitude: -52.223896 * Median Longitude: 166.191275 * South-bound Latitude: -52.224000 * West-bound Longitude: 166.191000 * North-bound Latitude: -52.223800 * East-bound Longitude: 166.191600
Date/Time Start: 2020-01-14T23:10:00 * Date/Time End: 2020-01-25T23:42:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
11 datasets

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Datasets listed in this bundled publication

  1. Zhang, Y; Frederichs, T (in review): Paleomagnetic directions and intensities of 572 sediment samples from IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991109
  2. Zhang, Y; Frederichs, T (in review): Stepwise NRM demagnetization data of 572 sediment samples from IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991426
  3. Zhang, Y; Frederichs, T (in review): Isothermal remanent magnetization (IRM) acquisition curves of 65 sediment samples from IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991427
  4. Zhang, Y; Wang, W (in review): Endmember analysis of IRM acquisition curves of 65 sediment samples of IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991428
  5. Zhang, Y; Frederichs, T (in review): Low-temperature thermomagnetic measurements of 11 sediment samples from IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991430
  6. Zhang, Y; Drury, AJ (in review): Magnetozone boundaries and assigned geomagnetic chrons of IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991435
  7. von Dobeneck, T; Zhang, Y (in review): Statistical analysis of sedimentary and diagenetic factors for NRM Interpretability at IODP Site 378-U1553, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991443
  8. Zhang, Y; Wang, W (in review): First order reversal curve (FORC) analysis of IODP sample U1553E-1H-4-W 114/116, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991444
  9. Zhang, Y; Yuan, W (in review): First order reversal curve (FORC) analysis of IODP sample U1553B-5H-2-W 61/63, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991450
  10. Zhang, Y; Yuan, W (in review): First order reversal curve (FORC) analysis of IODP sample U1553B-22X-2-W 77/79, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991455
  11. Zhang, Y; Yuan, W (in review): First order reversal curve (FORC) analysis of IODP sample U1553E-26X-3-W 43/45, southern Campbell Plateau. https://doi.pangaea.de/10.1594/PANGAEA.991456