Non-destructive 226Ra/238U dating of quaternary corals by gamma-spectrometry.

Komura, K.; Sakanoue, Masanobu; Konishi, Kenji

doi:10.2183/pjab.54.505

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2002

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Cited by 10 publications

(2 citation statements)

References 6 publications

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“…from the elevated atoll, Minamidaito, and discusses Late Quaternary tectonic history of the remnant arc. The dating was done by the newly proposed 226Ra-238U method (Komura et al, 1978), the result of which was supported with 14C dates for the same specimens.…”

mentioning

confidence: 59%

An early Wisconsin reef on the Daito Ridge, North Philippine Sea.

Konishi

Komura

Motoya

1978

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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mentioning

confidence: 59%

An early Wisconsin reef on the Daito Ridge, North Philippine Sea.

Konishi

Komura

Motoya

1978

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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“…Typical corrections of 0.000 005 were required to the measured 87 Sr/ 86 Sr ratios. Mass (Komura et al . 1978).…”

Section: Methodsmentioning

confidence: 99%

The chronology of Funafuti Atoll: revisiting an old friend

Ohde

Greaves

Masuzawa

et al. 2002

Proc. R. Soc. Lond. A

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The drill core of Funafuti Atoll, collected by The Royal Society Coral Reef Expedition in 1896-1898, has been dated using high-precision 14 C and Sr isotope measurements determined by mass spectrometry. The core top is a Holocene reef deposit, reflecting 26.4 m of reef growth since 8 ka, and is underlaid by Pleistocene reef-lagoonal deposits separated by a series of inferred hiatuses at 26.4 m, ca. 30 m, ca. 65 m and ca. 80 m (ca. 0.1 Ma, ca. 0.2 Ma, ca. 0.3 Ma and ca. 0.6 Ma, respectively), reflecting atoll carbonate deposits associated with late Quaternary sea-level changes. In turn, the underlying sequence below ca. 80 m comprises an upper section of additional Pleistocene reef-lagoonal deposits, having a high accumulation rate greater than 100 m Ma −1 , and a heavily dolomitized lower section. Sr isotope data in the lower section provide maximum (oldest) ages for dolomite formation and, depending on the extent of the isotopic memory from precursor CaCO 3 , reflect ongoing diagenetic alteration from ca. 2.3 Ma (i.e. the oldest dolomite) or in one or more discrete diagenetic events at ca. 1 Ma, and possibly at ca. 2 Ma. This sequence reflects interaction between atoll carbonate sedimentation, tectonic subsidence and eustatic sea-level change.

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Radioactive disequilibrium dating of corals by nuclear track detection

Kasuya

Ikeda

1991

Earth and Planetary Science Letters

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Non-destructive 226Ra/238U dating of quaternary corals by gamma-spectrometry.

Cited by 10 publications

References 6 publications

An early Wisconsin reef on the Daito Ridge, North Philippine Sea.

An early Wisconsin reef on the Daito Ridge, North Philippine Sea.

The chronology of Funafuti Atoll: revisiting an old friend

Radioactive disequilibrium dating of corals by nuclear track detection

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