Zhang, Yang; Wang, Wanzhang: Endmember analysis of IRM acquisition curves of 65 sediment samples of IODP Site 378-U1553, southern Campbell Plateau [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.991428 (dataset in review), In: 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)
Abstract:
End-member unmixing using the algorithm of Heslop and Dillon (2007) (doi:10.1111/j.1365-246X.2007.03432.x) was performed on 65 normalized IRM acquisition curves to quantify relative concentration changes of major magnetic mineral fractions. Four separate endmember components EM 1–4 were indicated. EM1 and EM2 represent ferrimagnetic low-coercivity components, which are saturated at 100 and 300 mT, respectively. EM3 and EM4 are still far from saturation at 500 mT and should primarily include the antiferromagnetic high-coercivity minerals hematite and goethite.
Related 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):
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)
Coverage:
Median Latitude: -52.223867 * Median Longitude: 166.191300 * 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
Minimum Elevation: -1221.7 m * Maximum Elevation: -1221.2 m
Event(s):
378-U1553A * Latitude: -52.223800 * Longitude: 166.191300 * Date/Time Start: 2020-01-14T23:10:00 * Date/Time End: 2020-01-16T09:15:00 * Elevation: -1221.2 m * Location: South Pacific Ocean * Campaign: EXP378 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: Time on hole (days): 1.42, Seafloor depth DRF (m): 1232.5, Seafloor depth est. method: APC_CALC, Rig floor to sea level (m): 11.3, Penetration DSF (m): 216.4, Cored interval (m): 216.4, Recovered length (m): 214.03, Recovery (%): 98.9, Total cores (no.): 27 APC cores (no.): 19 HLAPC cores (no.): 2 XCB cores (no.): 6
378-U1553B * Latitude: -52.223800 * Longitude: 166.191600 * Date/Time Start: 2020-01-16T09:15:00 * Date/Time End: 2020-01-18T03:45:00 * Elevation: -1221.7 m * Location: South Pacific Ocean * Campaign: EXP378 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: Time on hole (days): 1.77, Seafloor depth DRF (m): 1233, Seafloor depth est. method: APC_CALC, Rig floor to sea level (m): 11.34, Penetration DSF (m): 243, Cored interval (m): 243, Recovered length (m): 231.91, Recovery (%): 95.44, Total cores (no.): 29, APC cores (no.): 16, XCB cores (no.): 13
378-U1553E * Latitude: -52.224000 * Longitude: 166.191000 * Date/Time Start: 2020-01-24T12:55:00 * Date/Time End: 2020-01-25T23:42:00 * Elevation: -1221.3 m * Location: South Pacific Ocean * Campaign: EXP378 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: Time on hole (days): 1.45, Seafloor depth DRF (m): 1232.7, Seafloor depth est. method: APC_CALC, Rig floor to sea level (m): 11.44, Penetration DSF (m): 237.6, Cored interval (m): 237.6, Recovered length (m): 209.77, Recovery (%): 88.29, Total cores (no.): 27, APC cores (no.): 15, XCB cores (no.): 12
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Röhl, Ursula | Drilling/drill rig (DRILL) | ||
| 2 | Sample code/label | Sample label | Wang, Wanzhang | DSDP/ODP/IODP sample designation | Paleomagnetic cube samples | |
| 3 | Depth, composite revised | Depth comp r | rmcd | Wang, Wanzhang | Depth correlation/correction | Sample center CCSF depth |
| 4 | IRM, Intensity, per unit volume | Inten (IRM) | mA/m | Wang, Wanzhang | Magnetometer, cryogenic, pass-through, 2G Enterprises 755 R | |
| 5 | End member 1 | EM1 | % | Wang, Wanzhang | End-member analysis | Method by Heslop and Dillon (2007) |
| 6 | End member 2 | EM2 | % | Wang, Wanzhang | End-member analysis | Method by Heslop and Dillon (2007) |
| 7 | End member 3 | EM3 | % | Wang, Wanzhang | End-member analysis | Method by Heslop and Dillon (2007) |
| 8 | End member 4 | EM4 | % | Wang, Wanzhang | End-member analysis | Method by Heslop and Dillon (2007) |
| 9 | End member description | EM | Wang, Wanzhang | End-member analysis | Method by Heslop and Dillon (2007) | |
| 10 | DC Pulse Magnetization Step | Pulse Magnet Step | mT | Wang, Wanzhang | Calculated average/mean values | Mean IRM acquisition field step |
| 11 | Magnetization, normalized | norm Magn | Wang, Wanzhang | End-member analysis | Method by Heslop and Dillon (2007) |
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:
691 data points