Ota, Hayu; Kuroda, Junichiro; Orihashi, Yuji; Schmitz, Mark D; Takashima, Reishi (2026): Zircon U-Pb age data from a tuff sample (KRP072) of the Kawaruppu section [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.994126
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Published: 2026-05-19 • DOI registered: 2026-05-19
Abstract:
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.
Supplement to:
Ota, Hayu; Kuroda, Junichiro; Hayashi, Keiichi; Hoshi, Hiroyuki; Sawada, Ken; Hosogaya, Kohei; Nishi, Hiroshi; Ishikawa, Akira; Suzuki, Katsuhiko; Ikeda, Masashi A; Orihashi, Yuji; Schmitz, Mark; Gyawali, Babu Ram; Matsumoto, Hironao; Takashima, Reishi (2026): The Chicxulub impact signature in East Asia. Communications Earth & Environment, https://doi.org/10.1038/s43247-026-03602-z
Funding:
Japan Society for the Promotion of Science (JSPS), grant/award no. 17K05674: High resolution age model and paleoenvironmental change for K/Pg boundary
Japan Society for the Promotion of Science (JSPS), grant/award no. 18KK0091: Improvement of Cretaceous Geologic Time Scale
Japan Society for the Promotion of Science (JSPS), grant/award no. 21H04503: Environmental changes during the Latest Cretaceous Mass Extinction Event recorded in the complete K/Pg boundary sequence discovered firstly in East Asia
Japan Society for the Promotion of Science (JSPS), grant/award no. 22H01342: The Cretaceous-Paleogene Boundary in the Southern Hemisphere: Osmium isotopic record to fingerprint flood basalt volcanism
Japan Society for the Promotion of Science (JSPS), grant/award no. 22K18426: Linkage of the Earth's tipping points and the subseafloor biosphere
Japan Society for the Promotion of Science (JSPS), grant/award no. 23H00153: Analysis of internal Earth nitrogen using pupulin nitrogen isotope ratio
Japan Society for the Promotion of Science (JSPS), grant/award no. JPJSCCA20250004: Warm-period Climate Change Research Center with the International Ocean Drilling School [WarmCCR]
Coverage:
Median Latitude: 43.098419 * Median Longitude: 143.729519 * South-bound Latitude: 43.098055 * West-bound Longitude: 143.727351 * North-bound Latitude: 43.098784 * East-bound Longitude: 143.731687
Date/Time Start: 2015-08-27T00:00:00 * Date/Time End: 2024-08-24T00:00:00
Minimum SECTION, height: 178 m * Maximum SECTION, height: 178 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Takashima, Reishi | |||
| 2 | Sample code/label | Sample label | Takashima, Reishi | |||
| 3 | SECTION, height | Section | m | Takashima, Reishi | Geocode – Stratigraphic levels are given in meters from the base of the Kawaruppu section, which is defined as 0 m. | |
| 4 | Main Lithology | Main lith | Takashima, Reishi | |||
| 5 | Thorium/Uranium ratio | Th/U | Schmitz, Mark D | Calculated | Model Th/U ratio iteratively calculated from the radiogenic 208Pb/206Pb ratio and 206Pb/238U age. | |
| 6 | Lead-206 | 206Pb | nmol | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 7 | Lead-206 | 206Pb | % | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | mol %- radiogenic 206Pb with respect to radiogenic, blank and initial common Pb. |
| 8 | Lead, radiogenic/Lead ratio | Pb rad/Pb | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 9 | Lead | Pb | pg | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 10 | Lead-206/Lead-204 ratio | 206Pb/204Pb | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 11 | Lead-208/Lead-206 ratio | 208Pb/206Pb | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 12 | Lead-207/Lead-206 ratio | 207Pb/206Pb | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 13 | Lead-207/Lead-206 ratio, error, relative | 207Pb/206Pb e rel | % | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 14 | Lead-207/Uranium-235 ratio | 207Pb/235U | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 15 | Lead-207/Uranium-235 ratio, error, relative | 207Pb/235U e rel | % | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 16 | Lead-206/Uranium-238 ratio | 206Pb/238U | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 17 | Lead-206/Uranium-238 ratio, error, relative | 206Pb/238U e rel | % | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 18 | Correlation coefficient, isotope ratio error | Rho | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 19 | Lead-207/Lead-206 ratio | 207Pb/206Pb | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 20 | Lead-207/Lead-206 ratio, error | 207Pb/206Pb e | ± | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 21 | Lead-207/Uranium-235 ratio | 207Pb/235U | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 22 | Lead-207/Uranium-235 ratio, error | 207Pb/235U e | ± | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | |
| 23 | Lead-206/Uranium-238 ratio | 206Pb/238U | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) | ||
| 24 | Lead-206/Uranium-238 ratio, error | 206Pb/238U e | ± | Schmitz, Mark D | Zircon U/Pb dating by chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
132 data points