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 Zircon U-Pb age data from a tuff sample (KRP072) of the Kawaruppu section dataset https://doi.org/10.1594/PANGAEA.994126 2026-05-19T05:42:38 This dataset contains zircon U-Pb age data from a tuff sample (KRP072) collected at the Kawaruppu section, Nemuro Group, Hokkaido, Japan. The sample derives from the Upper Cretaceous-lower Paleogene succession investigated for stratigraphic assessment of the Cretaceous-Paleogene boundary interval. Zircon U-Pb analyses were performed by chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-ID-TIMS) at Boise State University (BSU) Isotope Geology Laboratory. 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 2024-08-24T00:00:00 178.0 178.0 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 132 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 Thorium/Uranium ratio Th/U thorium http://purl.obolibrary.org/obo/CHEBI_33385 uranium ratio Calculated Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 Model Th/U ratio iteratively calculated from the radiogenic 208Pb/206Pb ratio and 206Pb/238U age. Th/U (Model Th/U ratio iteratively ...) Lead-206 206Pb nmol Amount of Substance N http://dbpedia.org/resource/Amount_of_substance Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 206Pb [nmol] (Zircon U/Pb dating by chemica...) Lead-206 206Pb % Dimensionless Ratio ψ Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 mol %- radiogenic 206Pb with respect to radiogenic, blank and initial common Pb. 206Pb [%] (mol %- radiogenic 206Pb with ...) Lead, radiogenic/Lead ratio Pb rad/Pb lead ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 Pb rad/Pb (Zircon U/Pb dating by chemica...) Lead Pb pg lead Mass M http://dbpedia.org/resource/Mass Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 Pb [pg] (Zircon U/Pb dating by chemica...) Lead-206/Lead-204 ratio 206Pb/204Pb ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 206Pb/204Pb (Zircon U/Pb dating by chemica...) Lead-208/Lead-206 ratio 208Pb/206Pb ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 208Pb/206Pb (Zircon U/Pb dating by chemica...) Lead-207/Lead-206 ratio 207Pb/206Pb ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/206Pb (Zircon U/Pb dating by chemica...) Lead-207/Lead-206 ratio, error, relative 207Pb/206Pb e rel % lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead ratio relative Dimensionless Ratio ψ Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/206Pb e rel [%] (Zircon U/Pb dating by chemica...) Lead-207/Uranium-235 ratio 207Pb/235U lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 uranium-235 235U ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/235U (Zircon U/Pb dating by chemica...) Lead-207/Uranium-235 ratio, error, relative 207Pb/235U e rel % lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 uranium-235 235U relative Dimensionless Ratio ψ Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/235U e rel [%] (Zircon U/Pb dating by chemica...) Lead-206/Uranium-238 ratio 206Pb/238U lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead uranium-238 238U https://en.wikipedia.org/wiki/Isotopes_of_uranium ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 206Pb/238U (Zircon U/Pb dating by chemica...) Lead-206/Uranium-238 ratio, error, relative 206Pb/238U e rel % lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead uranium-238 238U https://en.wikipedia.org/wiki/Isotopes_of_uranium relative Dimensionless Ratio ψ Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 206Pb/238U e rel [%] (Zircon U/Pb dating by chemica...) Correlation coefficient, isotope ratio error Rho isotope ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 Rho (Zircon U/Pb dating by chemica...) Lead-207/Lead-206 ratio 207Pb/206Pb ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/206Pb (Zircon U/Pb dating by chemica...) Lead-207/Lead-206 ratio, error 207Pb/206Pb e ± Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/206Pb e [±] (Zircon U/Pb dating by chemica...) Lead-207/Uranium-235 ratio 207Pb/235U lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 uranium-235 235U ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/235U (Zircon U/Pb dating by chemica...) Lead-207/Uranium-235 ratio, error 207Pb/235U e ± lead-207 http://purl.obolibrary.org/obo/CHEBI_52455 uranium-235 235U Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 207Pb/235U e [±] (Zircon U/Pb dating by chemica...) Lead-206/Uranium-238 ratio 206Pb/238U lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead uranium-238 238U https://en.wikipedia.org/wiki/Isotopes_of_uranium ratio Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 206Pb/238U (Zircon U/Pb dating by chemica...) Lead-206/Uranium-238 ratio, error 206Pb/238U e ± lead-206 206Pb https://en.wikipedia.org/wiki/Isotopes_of_lead uranium-238 238U https://en.wikipedia.org/wiki/Isotopes_of_uranium Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) Schmitz Mark D markschmitz@boisestate.edu 0000-0003-2888-0321 206Pb/238U e [±] (Zircon U/Pb dating by chemica...) 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 method19077 method50 param102452 param106927 param106928 param114410 param116798 param160559 param18988 param29333 param506982 param5126 param5130 param53357 param53359 param563226 param78614 param78615 param78616 param790 param95717 pi63855 pi85678 ref139853 term1073193 term1073288 term1074468 term2663825 term40077 term40550 term40733 term40744 term42421 term43762 term43794 term43863 term43892 term44323 term44362 term49591 term52699 term68969 term75503 term77997 term78008 topotype3