| アイテムタイプ |
デフォルト(1) |
| 公開日 |
2026-03-25 |
| タイトル |
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|
タイトル |
Effective Separation and Mounting Processes of Detrital Zircon Grains for Unbiased U‒Pb Dating |
|
言語 |
en |
| 作成者 |
KAWAGUCHI, Kenta
KIMURA, Kosuke
HAYASAKA, Yasutaka
DAS, Kaushik
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
掲載された論文，その他教育・研究に関するもの，要旨などの出 版権・著作権は広島大学大学院人間社会科学研究科に帰属する。 |
|
言語 |
ja |
| 権利情報 |
|
|
権利情報 |
©2025 Graduate School of Humanities and Social Sciences, Hiroshima University. All rights reserved. |
|
言語 |
en |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Detrital zircon |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
U–Pb dating |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Provenance analysis |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Human bias, |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Zircon mounting |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Kuga Group |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Tamba Belt |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Detrital zircon U–Pb dating of (meta-) sedimentary rocks provides insights into 1)constraining the maximum depositional age, 2) estimating the provenance terrane, 3)characterizing the timing of continental growth and supercontinent cycling, and 4) trackingthe "lost (micro-) continental rocks/units". Consequently, this method has become increasinglypopular in the international geoscience community in recent years. However, detrital zircongrains in (meta-) sedimentary rocks are known to have a wide range of source rocks, resulting invarious sizes, shapes, and colors. These characteristics indicate that the different ages of detritalzircon grains display distinct visual appearances. This, in turn, means that preferential zircongrain selection during separation, mounting, and U–Pb measurement processes has resultedin human-biased detrital zircon age spectra. For this reason, unbiased, quick, and easy detritalzircon separation, mounting, and U–Pb measurements are essential, especially for 2) provenanceanalysis, as they include a discussion based on the percentage of specific aged components.Therefore, an effective zircon separation method, mounting flow, and spot selection process forunbiased detrital zircon U–Pb dating are introduced in this paper to better understand the preciseage spectra of detrital zircon grains. Our proposed detrital zircon U–Pb dating process includesa) mounting all the heavy and nonmagnetic minerals, including zircon, and b) not selecting thezircon grains mounted in a given area. Our proposed technique makes it possible to reveal theactual detrital zircon age spectra to better understand the provenance terrane of the target (meta-)sedimentary rocks. The LA–ICP–MS detrital zircon dating results of the four sandstones fromthe Kuga Group of the Tamba Belt, Southwest Japan, are presented as examples of unbiaseddetrital zircon U–Pb dating, as they include multiple provenances with different visualities, viz.,the ~1.9–1.8 Ga dominant Paleoproterozoic population with subordinate Late Paleozoic to EarlyMesozoic detrital zircon grains. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
広島大学大学院人間社会科学研究科 |
|
言語 |
ja |
| 出版者 |
|
|
出版者 |
Bulletin of the Graduate School of Humanities and Social Sciences, Hiroshima University |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| ID登録 |
|
|
ID登録 |
10.15027/0002041709 |
|
ID登録タイプ |
JaLC |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2436-2603 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12912965 |
| 書誌情報 |
ja : 広島大学大学院人間社会科学研究科紀要. 総合科学研究
en : Bulletin of the Graduate School of Humanities and Social Sciences, Hiroshima University. Studies in integrated arts and sciences
巻 6,
p. 31-54,
ページ数 24,
発行日 2025-12-31
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| 見出し |
|
|
大見出し |
環境科学部門 |
|
小見出し |
論文 |
|
言語 |
ja |
| 見出し |
|
|
大見出し |
Environmental Sciences |
|
小見出し |
Articles |
|
言語 |
en |
StuIntegrArtSci_6_31.pdf
