Clay mineral assemblages in sediment surface samples in the Western Pacific Warm Pool


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.

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Metadata Access
Creator Wu, Jiawang ORCID logo; Liu, Zhifei; Zhou, Chao
Publisher PANGAEA
Publication Year 2022
Funding Reference National Basic Research Program Crossref Funder ID 2007CB815906 2007CB815906; National Natural Science Foundation of China Crossref Funder ID 40925008 Nanhai clastic sediment source area, transport and deposition; National Natural Science Foundation of China Crossref Funder ID 91128206 Observation and Study on Bottom Current Flow and Sedimentation Process in Northeast China Sea
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 50 data points
Discipline Chemistry; Natural Sciences
Spatial Coverage (131.842W, -4.122S, 157.982E, 3.338N)