Ages of the Fish Canyon Sanidine Standard and the K–Pg Boundary

Frits Hilgen*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

Abstract

Uncertainties in the ages of the K–Pg boundary and the Fish Canyon sanidine (FCs) Ar–Ar sanidine dating standard, and in the number and tuning of 405-kyr eccentricity-related cycles, hamper the construction of a reliable tuned time scale for the Palaeogene, a critical time period marked by the occurrence of hyperthermals and the onset of ice-house conditions. Here, we present new results from integrated stratigraphic studies, including U–Pb, Ar–Ar, and astronomical intercalibration. These studies were conducted largely within the framework of the Marie Curie ITN GTSnext in an attempt to solve the discrepancies. Our results are overall consistent with an age of ~28.20 Ma for the FCs, the presence of 25 × 405-kyr cycles in the Palaeocene, and an age of ~65.95 Ma for the K–Pg boundary.

Original languageEnglish
Title of host publicationSTRATI 2013
Subtitle of host publicationFirst International Congress on Stratigraphy At the Cutting Edge of Stratigraphy
EditorsRogério Rocha, João Pais, José Carlos Kullberg, STanley Finney
PublisherSpringer
Pages197-199
Number of pages3
ISBN (Electronic)978-3-319-04364-7
ISBN (Print)978-3-319-04363-0
DOIs
Publication statusPublished - 24 Apr 2014

Publication series

NameSpringer Geology
ISSN (Print)2197-9545
ISSN (Electronic)2197-9553

Keywords

  • Ar–Ar dating
  • Astronomical dating
  • FCs
  • Geological time scale
  • K–Pg boundary
  • U–Pb dating

Fingerprint

Dive into the research topics of 'Ages of the Fish Canyon Sanidine Standard and the K–Pg Boundary'. Together they form a unique fingerprint.

Cite this