Noble gases in the K-T boundary clay from Stevns Klint, Denmark
スポンサーリンク
概要
- 論文の詳細を見る
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.
- 国立極地研究所の論文
著者
-
Takaoka Nobuo
Department Of Earth And Planetary Science Faculty Of Science Kyushu University
-
Miura Yasunori
Department Of Mineralogical Science And Geology Faculty Of Science Yamaguchi University
関連論文
- An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites(Proceedings of the 19^ Symposium on Chronological Studies at the Nagoya University Center for Chronological R
- An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites(Proceedings of the 19^ Symposium on Chronological Studies at the Nagoya University Center for Chronological R
- Cosmic-ray exposure age and heliocentric distance of the parent body of H chondrites Yamato-75029 and Tsukuba
- The global accretion rate of extraterrestrial materials in the last glacial period estimated from the abundance of micrometeorites in Antarctic glacier ice
- Collisional destruction experiment of chondrules and formation of fragments in the solar nebula
- Formation processes of magnetic spherules collected from deep-sea sediments -Observations and numerical simulations of the orbital evolution-
- Noble gas composition in unique meteorite Yamato-74063
- Cosmic-ray exposure ages of enstatite chondrites
- Noble Gases in Tellurium and Associated Minerals and Double-Beta Decay of ^Te
- Where are noble gases trapped in Yamato-74063 (unique) ?
- Noble gases in the unique meteorites Yamato-74063 and -74357
- 40Ar-39Ar analyses of Y-74063 and ALH-78230: Consortium study onunique meteorites from Antarctica
- Application of a spatial distribution readout system of thermoluminescence to meteorites
- 14C ages of 10 Yamato and Allan Hills meteorites
- 14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions
- On homogeneity of the Yamato-75110 chondrite
- Measurement of terrestrial age of Antarctic meteorites by thermoluminescence technique
- Classification of several Yamato-75 chondrites (IV)
- Classification of several Yamato-75 chondrites (III)
- Trace element concentrations in iron type cosmic spherules determined by the SR-XRF method
- Yamato-86789: A heated CM-like carbonaceous chondrite
- Composition and structural substitution of meteoritic plagioclases (I)
- Neutron Capture Effects in Yamato-74191 and Rare Gas Composition in Yamato-75258
- Noble gases in Yamato-791197: Evidence for lunar highland origin
- Noble gas study of Yamato-82192 lunar meteorite
- Scandium 45 in meteoritic irons
- 40Ar-39Ar analyses of an Antarctic meteorite Yamato-791197 of probable lunar origin
- Rare Gas Studies of Antarctic Meteorites
- Rare gas studies of sixteen stony meteorites from Antarctica
- Rare gas studies of twenty-four antarctic chondrites
- Noble gases in the K-T boundary clay from Stevns Klint, Denmark
- Merrillite, a whitlockite-group mineral in Yamato-75 chondrites
- Noble gases in ten, small Yamato chondrites
- Rare Gas Studies of Yamato-7301(j), -7304(m) and -7305(k)
- The Ni, Fe and Co contents of metal phases in the Allende, Holbrook and Nuevo Mercurio chondrites
- 40Ar-39Ar analyses of lunar anorthositic breccia, Yamato-82192 from Antarctica
- Noble gases in Yamato-793274 and -86032 lunar meteorites
- An Interpretation of General Anomalies of Xenon and the Isotopic Composition of Primitive Xenon
- A Low-Blank, Metal System for Rare-Gas Analysis
- The global accretion rate of extraterrestrial materials in the last glacial period estimated from the abundance of micrometeorites in Antarctic glacier ice