Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Atmosphere and Ocean Research Institute, The University of Tokyo https://ror.org/057zh3y96 Kuroda Junichiro kuroda@aori.u-tokyo.ac.jp 0000-0002-2218-4854 Atmosphere and Ocean Research Institute, The University of Tokyo https://ror.org/057zh3y96 Orihashi Yuji 0000-0001-7715-3847 Faculty of Science and Technology, Graduate School of Science and Technology, Hirosaki University http://www.hirosaki-u.ac.jp/ https://ror.org/02syg0q74 Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 Department of Geosciences, Boise State University BSU https://www.boisestate.edu/ https://ror.org/02e3zdp86 Takashima Reishi reishi.takashima.a7@tohoku.ac.jp 0000-0003-1830-6887 The Center for Academic Resources and Archives, Tohoku University Museum 2026 Major element compositions of the sample series KWR4 from the Kawaruppu section dataset https://doi.org/10.1594/PANGAEA.994131 2026-05-19T05:42:38 This dataset contains major element compositions of the KWR4 sample series collected from the high-resolution interval of the Kawaruppu section, Nemuro Group, Hokkaido, Japan. These data were obtained to evaluate whether the osmium isotope ratios and platinum group element concentrations of the same samples were affected by diagenetic alteration. Major element compositions were measured by a RIGAKU ZSX Primus II X-ray fluorescence (XRF) spectrometer at Atmosphere and Ocean Research Institute (AORI), the University of Tokyo (Kashiwa). Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Kuroda Junichiro kuroda@aori.u-tokyo.ac.jp 0000-0002-2218-4854 Hayashi Keiichi hayashi-keiichi@hro.or.jp Hoshi Hiroyuki hoshi@auecc.aichi-edu.ac.jp 0000-0002-9920-2205 Sawada Ken sawadak@sci.hokudai.ac.jp 0000-0003-3298-5716 Hosogaya Kohei Nishi Hiroshi hiroshi.nishi.b3@tohoku.ac.jp 0009-0007-4984-334X Ishikawa Akira 0000-0002-8938-0200 Suzuki Katsuhiko 0000-0003-4266-5046 Ikeda Masashi A ma_sunny_ikeda@eis.hokudai.ac.jp Orihashi Yuji 0000-0001-7715-3847 Schmitz Mark 0000-0003-2888-0321 Gyawali Babu Ram babugyawali@yahoo.com 0000-0002-9896-8399 Matsumoto Hironao matsumoto@aori.u-tokyo.ac.jp 0000-0002-1420-2565 Takashima Reishi reishi.takashima.a7@tohoku.ac.jp 0000-0003-1830-6887 2026 The Chicxulub impact signature in East Asia journal article Communications Earth & Environment https://doi.org/10.1038/s43247-026-03602-z 173.0 173.55 vertical profile Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 17K05674 High resolution age model and paleoenvironmental change for K/Pg boundary https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17K05674/ Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 18KK0091 Improvement of Cretaceous Geologic Time Scale https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18KK0091 Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 21H04503 Environmental changes during the Latest Cretaceous Mass Extinction Event recorded in the complete K/Pg boundary sequence discovered firstly in East Asia https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21H04503 Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 22H01342 The Cretaceous-Paleogene Boundary in the Southern Hemisphere: Osmium isotopic record to fingerprint flood basalt volcanism https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23K22613/ Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 22K18426 Linkage of the Earth's tipping points and the subseafloor biosphere https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K18426/ Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 23H00153 Analysis of internal Earth nitrogen using pupulin nitrogen isotope ratio https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23H00153/ Japan Society for the Promotion of Science JSPS https://www.jsps.go.jp/english/ https://doi.org/10.13039/501100001691 JPJSCCA20250004 Warm-period Climate Change Research Center with the International Ocean Drilling School [WarmCCR] https://sites.google.com/view/kochi-jsps-core2core/english?authuser=0 105 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Sample code/label Sample label Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Sample label SECTION, height Section m height http://purl.obolibrary.org/obo/PATO_0000119 Length L http://dbpedia.org/resource/Length Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Stratigraphic levels are given in meters from the base of the Kawaruppu section, which is defined as 0 m. Section [m] Main Lithology Main lith Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Main lith Sodium oxide Na2O % sodium oxide Na2O https://pubchem.ncbi.nlm.nih.gov/compound/73971 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% Na2O [%] Magnesium oxide MgO % magnesium oxide http://purl.obolibrary.org/obo/CHEBI_31794 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% MgO [%] Aluminium oxide Al2O3 % aluminium oxide http://purl.obolibrary.org/obo/CHEBI_30187 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% Al2O3 [%] Silicon dioxide SiO2 % https://en.wikipedia.org/wiki/Silicon_dioxide silicon dioxide http://purl.obolibrary.org/obo/CHEBI_30563 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% SiO2 [%] Phosphorus pentoxide P2O5 % phosphorus oxide http://purl.obolibrary.org/obo/CHEBI_37349 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% P2O5 [%] Potassium oxide K2O % potassium oxide http://purl.obolibrary.org/obo/CHEBI_88321 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% K2O [%] Calcium oxide CaO % https://en.wikipedia.org/wiki/Calcium_oxide calcium oxide http://purl.obolibrary.org/obo/CHEBI_31344 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% CaO [%] Titanium dioxide TiO2 % https://en.wikipedia.org/wiki/Titanium_dioxide titanium dioxide http://purl.obolibrary.org/obo/CHEBI_32234 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% TiO2 [%] Chromium(III) oxide Cr2O3 % http://en.wikipedia.org/wiki/Chromium(III)_oxide Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% Cr2O3 [%] Manganese oxide MnO % manganese oxide Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% MnO [%] Iron oxide, Fe2O3 Fe2O3 % iron oxide http://purl.obolibrary.org/obo/CHEBI_50816 ferric oxide Fe2O3 Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% Fe2O3 [%] Nickel oxide NiO % Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 mass% NiO [%] Loss on ignition LOI % http://en.wikipedia.org/wiki/Loss_on_ignition loss Dimensionless Ratio ψ X-ray fluorescence spectrometer (XRF), Rigaku Holdings Corporation, ZSX Primus II Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 LOI [%] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Cretaceous-Paleogene boundary East Asia IODP³ Osmium zircon U-Pb geochronology author103760 author103762 author117459 author117517 author26941 author27808 author31983 author41733 author41736 author49863 author52385 author63855 author66394 author78145 author83172 author85678 award2779 award2780 award4975 award4976 award4977 award4978 award4985 curlevel30 funder20747 geocode25539 inst22346 inst22761 inst22762 inst22763 journal17037 license21 method19080 param1825 param1827 param2208 param29333 param55235 param702 param703 param704 param705 param706 param707 param708 param709 param790 param811 pi117459 ref139853 term1073224 term1073288 term1073388 term1074034 term1074050 term1074058 term1074190 term1074191 term2632269 term40753 term40802 term41092 term43794 term43863 term49257 term49591 term52699 term68969 term75503 term78008 topotype3