Abstract
At the Cretaceous/Tertiary (K/T) boundary within the continuous marine sedimentary sequence of Kawaruppu section in the eastern Hokkaido, a temporary and drastic increase in 34S/32S ratio of whole rock sulfide has been recognized. Pyrite is the major sulfur carrier in many of the present samples. It is remarkable that the sedimentary sequence records a sharp and drastic increase in 34S/32S ratio just at the bottom of the boundary claystone with a rather gradual, upward re-equilibration trend from the boundary. This is fairly analogous in variation pattern to the palynological (pollen/spore ratio) profiles reported from some K/T boundary sections. -from Authors
| Original language | English |
|---|---|
| Pages (from-to) | 69-73 |
| Number of pages | 5 |
| Journal | Annual Report - University of Tsukuba, Institute of Geoscience |
| Volume | 17 |
| Publication status | Published - 1991 Jan 1 |
ASJC Scopus subject areas
- Environmental Science(all)
- Earth and Planetary Sciences(all)
