An inter‐laboratory evaluation of OD‐3 zircon for use as a secondary U–Pb dating standard

H Iwano, Y Orihashi, T Hirata, M Ogasawara… - Island Arc, 2013 - Wiley Online Library
Zircon OD‐3 from the P aleogene K awamoto G ranodiorite (M ihara body) in J apan has
been identified as a potential multi‐grain secondary standard for U–Pb dating. We have …

Two-stage partial melting and contrasting cooling history within the Higher Himalayan Crystalline Sequence in the far-eastern Nepal Himalaya

T Imayama, T Takeshita, K Yi, DL Cho, K Kitajima… - Lithos, 2012 - Elsevier
The timing of partial melting and the pressure–temperature (P–T) paths in the High
Himalayan Crystalline Sequence (HHCS) in far-eastern Nepal has been investigated using …

Zircon fission‐track and U–Pb double dating using femtosecond laser ablation–inductively coupled plasma–mass spectrometry: A technical note

H Iwano, T Danhara, Y Danhara, S Hirabayashi… - Island Arc, 2020 - Wiley Online Library
We present a new LA–ICP–MS system for zircon fission‐track (FT) and U–Pb double dating,
whereby a femtosecond laser combined with galvanometric optics simultaneously ablates …

Detrital zircon multi‐chronology, provenance, and low‐grade metamorphism of the C retaceous S himanto accretionary complex, eastern S hikoku, S outhwest J apan …

H Hara, Y Nakamura, K Hara, T Kurihara, H Mori… - Island Arc, 2017 - Wiley Online Library
Detrital zircon multi‐chronology combined with provenance and low‐grade metamorphism
analyses enables the reinterpretation of the tectonic evolution of the C retaceous S himanto …

Standardless fission-track ages of the IUGS age standards

H Iwano, T Danhara, T Hirata - Chemical Geology, 2018 - Elsevier
Standardless fission-track ages for four zircon, two titanite and three apatite age standards,
most of them recommended by the Fission Track Working Group of the IUGS …

Position-by-position cooling paths within the Toki granite, central Japan: Constraints and the relation with fracture population in a pluton

T Yuguchi, S Sueoka, H Iwano, Y Izumino… - Journal of Asian Earth …, 2019 - Elsevier
Understanding the locational differences of time-temperature (tT) paths within the granite
contributes to clarifying the detailed formation history, especially the thermal evolution, of the …

Post‐rift stress history of Southwest Japan inferred from early to middle Miocene intrusions and meso‐scale faults in the Tajima–Myokensan area

T Haji, A Yamaji - Island Arc, 2021 - Wiley Online Library
Miocene igneous dikes older and younger than 15 Ma in Southwest Japan are thought to be
oriented parallel and perpendicular to the arc, respectively. This difference of orientations …

Duluth Complex apatites: Age reference material for LA–ICP–MS‐based fission‐track dating

H Iwano, T Danhara, T Yuguchi, T Hirata… - Terra …, 2019 - Wiley Online Library
Anorthositic series apatites of the Duluth Complex, Minnesota, USA, have high spontaneous
fission‐track densities of up to~ 107 cm–2 and a homogeneous age of~ 900 Ma, allowing …

Spatial distribution of the apatite fission‐track ages in the T oki granite, central J apan: E xhumation rate of a C retaceous pluton emplaced in the E ast A sian …

T Yuguchi, S Sueoka, H Iwano, T Danhara… - Island Arc, 2017 - Wiley Online Library
The C retaceous T oki granitic pluton of the T ono district, central J apan was emplaced in
the E ast A sian continental margin at about 70 Ma. The T oki granite has apatite fission …

U–Pb and fission‐track dating of Miocene hydrocarbon source rocks in the Akita Basin, Northeast Japan, and implications for the timing of paleoceanographic …

T Nakajima, H Iwano, T Danhara, T Hirata… - Island Arc, 2023 - Wiley Online Library
Abstract Middle to Late Miocene organic‐rich siliceous mudstones (Onnagawa Formation) in
the Akita Basin, Northeast Japan have been an important target for both paleoceanographic …