Wu, Jiawang; Liu, Zhifei; Zhou, Chao (2022): Clay mineral assemblages in a sediment core KX21-2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.946136, In: Wu, J et al. (2022): Late Quaternary clay mineral assemblages in the Western Pacific Warm Pool [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.946134
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Published: 2022-07-07 • DOI registered: 2022-08-06
Abstract:
Clay mineralogy data of late-Quaternary marine sediment cores in the western equatorial Pacific are presented here. These include core KX21-2 collected on the Ontong Java Plateau (downcore profile over the past 380 ka), as well as cores KX10-1, KX12-1, KX13-1 and KX15-2 collected off the northern coast of Papua New Guinea (surface samples only). All the five cores were retrieved a giant gravity corer onboard R/V Kexue-1 during the KX08-973 cruise in 2008/2009. The Clay minerals were identified by X-ray diffraction (XRD) using a PANalytical X'Pert Pro diffractometer, with a 0.03°2Q/s rate under CuKa radiation and Ni filter, at Tongji University. The analysis was conducted on oriented mounts of non-calcareous, clay-sized particles (<2 mm). The XRD runs were performed under three conditions: untreated, glycolated (in ethylene-glycol vapor for 24 h), and heated (490 °C for 2 h). Identification of clay minerals was done according to a comprehensive comparison of the three XRD diagrams. For the main clay-mineral groups, the relative abundances were calculated by measuring the peak areas on glycolated curve using MacDiff 4.2 software. For more details see the reference paper.
Keyword(s):
Related to:
Wu, Jiawang; Liu, Zhifei; Zhou, Chao (2012): Late quaternary glacial cycle and precessional period of clay mineral assemblages in the western pacific warm pool. Chinese Science Bulletin, 57(28-29), 3748-3760, https://doi.org/10.1007/s11434-012-5277-x
Funding:
National Natural Science Foundation of China (NSFC), grant/award no. 40925008: Nanhai clastic sediment source area, transport and deposition
National Natural Science Foundation of China (NSFC), grant/award no. 91128206: Observation and Study on Bottom Current Flow and Sedimentation Process in Northeast China Sea
Coverage:
Latitude: -1.416830 * Longitude: 157.981830
Minimum Elevation: -1897.0 m * Maximum Elevation: -1897.0 m
Event(s):
KX21-2 * Latitude: -1.416830 * Longitude: 157.981830 * Elevation: -1897.0 m * Campaign: KX08-973 * Basis: Kexue * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | ORDINAL NUMBER | Ord No | Wu, Jiawang | Geocode | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Wu, Jiawang | Geocode | |
| 3 | Depth, top/min | Depth top | m | Wu, Jiawang | ||
| 4 | Depth, bottom/max | Depth bot | m | Wu, Jiawang | ||
| 5 | AGE | Age | ka BP | Wu, Jiawang | Geocode | |
| 6 | Smectite | Sme | % | Wu, Jiawang | PANalytical X'Pert PRO diffractometer (XRD) | |
| 7 | Illite | Ill | % | Wu, Jiawang | PANalytical X'Pert PRO diffractometer (XRD) | |
| 8 | Kaolinite | Kln | % | Wu, Jiawang | PANalytical X'Pert PRO diffractometer (XRD) | |
| 9 | Chlorite | Chl | % | Wu, Jiawang | PANalytical X'Pert PRO diffractometer (XRD) | |
| 10 | Feldspar/Quartz ratio | Fsp/Qz | Wu, Jiawang | |||
| 11 | Smectite crystallinity | Sme cryst | d2Theta | Wu, Jiawang | ||
| 12 | Illite crystallinity | Ill cryst | d2Theta | Wu, Jiawang | ||
| 13 | Illite chemistry index | Ill chem index | Wu, Jiawang |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
4238 data points
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