Department of Earth Sciences, Faculty of Science, Yamagata University/Department of Mineralogical Science and Geology, Faculty of Science, Yamaguchi University
抄録(英)
Helium and neon isotopes were investigated in two beds of the Cretaceous-Tertiary (K-T) boundary collected at Stevns Klint in Denmark. Observed enrichments in ^3He and ^<21>Ne relative to atmospheric abundances suggest that the K-T boundary sediment contains spallogenic He and Ne. Although this is a favorable result for the asteroid impact hypothesis, we need more data on noble gas isotopes not only in the K-T boundary sediments but also in sedimentary rocks other than the K-T boundary.
雑誌書誌ID
AA10784627
雑誌名
Proceedings of the NIPR Symposium on Antarctic Meteorites
Noble gases in the K-T boundary clay from Stevns Klint, Denmark
.png)
KJ00000036302
(1.2MB)
概要
