2024-03-29T01:37:39Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00001810
2023-01-16T05:18:55Z
367:368:369:370
<原著論文>美濃帯北東部, 月夜沢峠地域のジュラ紀礫岩から産出した約178MaのCHIME年代を示す花崗岩質岩礫(予報)
<Original Article>Preliminary report on ca. 178 Ma granitic rock clast from the Jurassic conglomerate in the Tsukiyozawa area, northeastern Mino terrane, central Japan
田中, 姿郎
TANAKA, Shiro
鈴木, 和博
SUZUKI, Kazuhiro
足立, 守
ADACHI, Mamoru
open access
CHIME(chemical Th-U-total Pb isochron method) age determinations were made on a granodiorite clast from the Jurassic Tsukiyozawa conglomerate in the northeastern Mino terrane, central Japan. This clast consists of andesine, quartz, biotite, and potassium feldspar (partly porphyritic) with minor amounts of apatite, zircon, monazite and opaque minerals. Three monazite grains in the clast were analyzed and gave an isochron age of 178 ± 3 Ma. This is the first authenticated document to unveil the existence of the Jurassic granitoid clast from the Jurassic intraformational conglomerate in the Mino terrane, although Jurassic detrital monazites have been already reported from many sandstones of the Mino terrane. The Jurassic granodiorite mass is likely to have been rapidly uplifted and eroded after the emplacement in early to middle Jurassic time. This discovery provides a clearer clue to the Mesozoic source rock for clastic rocks of the Mino terrane.
国立情報学研究所で電子化したコンテンツを使用している。
名古屋大学博物館
2001-03-21
jpn
departmental bulletin paper
VoR
https://doi.org/10.18999/bulnum.016.03
http://hdl.handle.net/2237/3226
https://nagoya.repo.nii.ac.jp/records/1810
10.18999/bulnum.016.03
13468286
名古屋大学博物館報告
16
33
41
https://nagoya.repo.nii.ac.jp/record/1810/files/KJ00000051487.pdf
application/pdf
1.6 MB
2018-02-16