Sulfur isotopic data from the Cretaceous/Tertiary boundary sediments in the eastern Hokkaido, Japan

Y. Kajiwara; K. Kaiho

Sulfur isotopic data from the Cretaceous/Tertiary boundary sediments in the eastern Hokkaido, Japan

Y. Kajiwara, K. Kaiho

SCI - Earth Science

Research output: Contribution to journal › Article › peer-review

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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)

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Cite this

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title = "Sulfur isotopic data from the Cretaceous/Tertiary boundary sediments in the eastern Hokkaido, Japan",

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",

author = "Y. Kajiwara and K. Kaiho",

year = "1991",

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day = "1",

language = "English",

volume = "17",

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journal = "Annual Report - University of Tsukuba, Institute of Geoscience",

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TY - JOUR

T1 - Sulfur isotopic data from the Cretaceous/Tertiary boundary sediments in the eastern Hokkaido, Japan

AU - Kajiwara, Y.

AU - Kaiho, K.

PY - 1991/1/1

Y1 - 1991/1/1

N2 - 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

AB - 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

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M3 - Article

AN - SCOPUS:0026273435

VL - 17

SP - 69

EP - 73

JO - Annual Report - University of Tsukuba, Institute of Geoscience

JF - Annual Report - University of Tsukuba, Institute of Geoscience

SN - 0285-3175

ER -

Sulfur isotopic data from the Cretaceous/Tertiary boundary sediments in the eastern Hokkaido, Japan

Abstract

ASJC Scopus subject areas

UN SDGs

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