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 Low-resolution osmium and rhenium concentrations from mudstone samples of the Kawaruppu section dataset https://doi.org/10.1594/PANGAEA.994127 2026-05-19T05:42:38 This dataset contains osmium isotope ratios and osmium and rhenium concentrations from mudstone samples collected from the low-resolution interval of the Kawaruppu section, Nemuro Group, Hokkaido, Japan. The data cover the Upper Cretaceous-lower Paleogene interval across the Cretaceous-Paleogene boundary and were compiled for an integrated stratigraphic investigation of the boundary interval. Osmium isotope ratios and Os concentrations were measured by negative thermal ionization mass spectrometry (N-TIMS; TRITON, Thermo Fisher Scientific) and rhenium concentrations were measured by inductively coupled plasma quadrupole mass spectrometry (ICP-QMS; iCAP Q, ThermoFisher Scientific) at Japan Agency for Marine-Earth Science and Technology (JAMSTEC). 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 143.7273507 143.7316874 43.09805507 43.0987835 143.72951905 43.098419285000006 2015-08-27T00:00:00 2024-08-24T00:00:00 35.4 194.3 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 Kawaruppu_section 43.0987835 143.7273507 Hokkaido, Japan 2015-08-27T00:00:00 43.09805507 143.7316874 2024-08-24T00:00:00 Outcrop sample OUTCROP 244 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Takashima Reishi reishi.takashima.a7@tohoku.ac.jp 0000-0003-1830-6887 Event Sample code/label Sample label Takashima Reishi reishi.takashima.a7@tohoku.ac.jp 0000-0003-1830-6887 Sample label SECTION, height Section m height http://purl.obolibrary.org/obo/PATO_0000119 Length L http://dbpedia.org/resource/Length Takashima Reishi reishi.takashima.a7@tohoku.ac.jp 0000-0003-1830-6887 Stratigraphic levels are given in meters from the base of the Kawaruppu section, which is defined as 0 m. Section [m] (Stratigraphic levels are give...) Main Lithology Main lith Takashima Reishi reishi.takashima.a7@tohoku.ac.jp 0000-0003-1830-6887 Main lith Osmium Os pg/g osmium Negative-thermal ionization mass spectrometer (N-TIMS), Thermo Fisher Scientific, TRITON XT Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Os [pg/g] (Negative-thermal ionization m...) Osmium, standard deviation Os std dev ± osmium standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Negative-thermal ionization mass spectrometer (N-TIMS), Thermo Fisher Scientific, TRITON XT Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 1-sigma Os std dev [±] (1-sigma, Negative-thermal ion...) Rhenium Re pg/g rhenium Inductively coupled plasma mass spectrometer (ICP-MS), Thermo Fisher Scientific Inc., iCAP TQ Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Re [pg/g] (Inductively coupled plasma ma...) Rhenium, standard deviation Re std dev ± rhenium standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Inductively coupled plasma mass spectrometer (ICP-MS), Thermo Fisher Scientific Inc., iCAP TQ Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 1-sigma Re std dev [±] (1-sigma, Inductively coupled ...) Osmium-187/Osmium-188 ratio 187Os/188Os osmium-188 188Os https://en.wikipedia.org/wiki/Isotopes_of_osmium ratio Negative-thermal ionization mass spectrometer (N-TIMS), Thermo Fisher Scientific, TRITON XT Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 187Os/188Os (Negative-thermal ionization m...) Osmium-187/Osmium-188 ratio, standard deviation 187Os/188Os std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Negative-thermal ionization mass spectrometer (N-TIMS), Thermo Fisher Scientific, TRITON XT Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 1-sigma 187Os/188Os std dev [±] (1-sigma, Negative-thermal ion...) Osmium-187/Osmium-188 ratio 187Os/188Os osmium-188 188Os https://en.wikipedia.org/wiki/Isotopes_of_osmium ratio Corrected, using the 187Os/188Os ratios for in situ decay of 187Re Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Initial 187Os/188Os (Initial, Corrected, using the...) Osmium-187/Osmium-188 ratio, standard deviation 187Os/188Os std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Corrected, using the 187Os/188Os ratios for in situ decay of 187Re Ota Hayu h-ota@g.ecc.u-tokyo.ac.jp 0009-0001-7029-2067 Initial, 1-sigma 187Os/188Os std dev [±] (Initial, 1-sigma, Corrected, ...) 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 event3404743 funder20747 geocode1599 geocode1600 geocode1601 geocode25539 inst22346 inst22761 inst22762 inst22763 journal17037 license21 method11405 method17909 method19078 method19079 param108519 param159412 param29333 param502194 param52569 param563227 param563228 param790 pi117459 pi63855 ref139853 term1073288 term2663825 term37764 term40558 term40786 term40902 term43863 term49591 term52699 term68969 term75503 term77997 term78008 topotype3