Geochemistry of Nd and Ce isotopes and REE abundances in Precambrian orthogneiss clasts from the Kamiaso conglomerate, central Japan.

Shimizu, Hiroshi; Lee, Seung-Gu; Masuda, Akimasa; Adachi, Mamoru

doi:10.2343/geochemj.30.57

Cited by 24 publications

(17 citation statements)

References 36 publications

(56 reference statements)

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“…The oldest rock in Japan so far reported is the Kamiaso conglomerate whose clasts give RbSr and Sm-Nd ages of 2050 ± 30 Ma and 2070 ± 60 Ma, respectively (Shibata and Adachi, 1974;Shimizu et al, 1996). The two concordant zircons (KMS04 and KMS10) derived from the Kamiaso volcaniclastic rock indicates the old age of 1976 ± 45 Ma (Table 2), which agrees well with those of Rb-Sr and Sm-Nd in the literatures.…”

Section: Search For the Oldest Mineral In Japansupporting

confidence: 80%

“…Shibata and Adachi (1974) reported a Rb-Sr whole-rock age of 2050 ± 30 Ma for the metamorphic rocks from the Kamiaso conglomerate from central Japan. Recently Shimizu et al (1996) have confirmed that the Kamiaso sample has an age of 2070 ± 60 Ma by Sm-Nd whole rock methods. The other evidence for Precambrian age was found in Hida metamorphic rocks on Oki-dogo Island where a preliminary study reported the Sm-Nd age of 1980 ± 180 Ma for amphibolite and that of 1960 ± 820 for pelitic gneiss (Tanaka and Hoshino, 1987).…”

Section: Introductionmentioning

confidence: 56%

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Ion microprobe U-Pb zircon geochronology of the Hida gneiss. Finding of the oldest minerals in Japan.

et al. 2000

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Section: Search For the Oldest Mineral In Japansupporting

confidence: 80%

Section: Introductionmentioning

confidence: 56%

Ion microprobe U-Pb zircon geochronology of the Hida gneiss. Finding of the oldest minerals in Japan.

et al. 2000

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“…In addition, Adachi and Suzuki (1993), judging from the nearly identical Rb-Sr age and petrographical similarity between gneisses from the two areas, suggested as provenance of the Kamiaso gneissic clasts the Samcheok area in the eastern part of the Youngnam Massif (Sobaegsan Massif), south Korea. Contrary to this, based on initial Nd and Ce isotopic data of the orthogneisses from the Kamiaso conglomerate, central Japan, Shimizu et al (1996) argued that the Samcheok gneisses of the Sobaegsan Massif, South Korea and the Kamiaso orthogneiss clasts were derived from different sources. Lee et al (1992) suggested also the possibility that some Precambrian orthogneisses from Korea had evolved from protoliths that had similar geochemical properties to the Precambrian orthogneisses in Japan and northern China.…”

Section: Introductionmentioning

confidence: 92%

“…Tanaka and Masuda (1982) applied the 138 La-138 Ce geochronometer to the Bushveld gabbro. Since then, the La-Ce system coupled with Sm-Nd system offers us an efficient tool to argue about LREE evolution (Tanaka et al, 1987;Shimizu et al, 1984Shimizu et al, , 1988Shimizu et al, , 1990aShimizu et al, , 1990bShimizu et al, , 1996. In order to compare the Sm-Nd and La-Ce isotope systematics for biotite and granitic gneisses, the data are shown in a ε Ce -ε Nd diagram (Fig.…”

Section: Ce-nd Systematics and Its Implicationsmentioning

confidence: 99%

“…Solid circles (CHs) are data of Chinese samples rocks (Jahn and Zhang, 1984;Xuan et al, 1986;Jahn et al, 1987Jahn et al, , 1988Jahn and Ernst, 1990;Li et al, 1990;Wang et al, 1990;Sun et al, 1992Sun et al, , 1993Hu et al, 1991;Rämö et al, 1995;Bai and Dai, 1996). The point of Japanese sample (open circle) is from Shimizu et al (1996). CHUR line.…”

Section: Model Ages and Initial Isotopic Ratios And Sourcesmentioning

confidence: 99%

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Crustal evolution history of Korean Peninsula in East Asia: The significance of Nd, Ce isotopic and REE data from the Korean Precambrian gneisses.

et al. 2001

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The Precambrian basement of the Korean Peninsula, located at the east margin of Asian continent, consists of the Nangrim Massif, the Gyeonggi Massif and the Sobaegsan (Yeongnam) Massif. Two kinds of orthogneisses (biotite gneiss and granitic gneiss) from the central part of the Sobaegsan Massif show the particular difference in geochemical features suggesting the discrimination in formation history. The biotite gneisses give an Sm-Nd whole rock isochron age of 819 ± 114 Ma (2σ) with ε Nd (0.82 Ga) = -15, and the granitic gneisses give an age of 1484 ± 810 Ma (2σ) with ε Nd (1.48 Ga) = +7. The ε Nd and ε Ce values for the granitic gneisses show characteristics of highly depleted mantle material and those of the biotite gneisses show their sources having light-REE enriched continental-like feature. Chondrite-normalized REE patterns are also different. Biotite gneisses have less fractionated patterns with (La/Yb) N ratio of 10~16 and negative Eu anomalies, while granitic gneisses have fractionated patterns with (La/Yb) N ratio of 30~180 with no/or positive Eu anomalies. The Ce-Nd isotopic results obtained here indicate that the Sobaegsan biotite gneisses were derived from continental-like sources having light-REE enriched feature, while the Sobaegsan granitic gneisses were derived from MORB-like sources having light-REE-depleted feature. These isotopic and REE data are interpreted as recording LREE fractionation events associated with major episodes of crust formation in East Asia. And the comparison of the initial ε Nd value of the Sobaegsan biotite gneiss at 0.82 Ga with those of the Chinese and Japanese Precambrian rocks implies that the sources for the Sobaegsan biotite gneisses and these Chinese and Japanese rocks had common light-REE enriched pattern, e.g., 147 Sm/ 144 Nd ratio ranging from 0.09-0.13. Furthermore, it suggests that these sources having light-REE enriched patterns were derived from depleted mantle at the late Archean.

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Palaeogeographic and tectonic setting of the Lower Jurassic (Pliensbachian‐Toarcian) Nishinakayama Formation, Toyora Group, SW Japan

et al. 2019

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The palaeogeographic and tectonic setting of the Lower Jurassic Nishinakayama Formation (Toyora Group, southwest Japan) is interpreted based on new U–Pb ages for detrital zircon grains separated from a sandstone sample, combined with available provenance data. The newly obtained age spectrum of detrital zircon grains is characterized by multiple age clusters. Specifically, (1) nearly syndepositional (Lower Jurassic; 182–200 Ma), (2) Early Permian to Late Triassic (205–288 Ma), and (3) Precambrian (1,855–2,660 Ma). The youngest zircon age (182.4 ± 5.1 Ma) is consistent with the biostratigraphically constrained depositional age (falciferum ammonite Zone, lower Toarcian). The presence of a near‐syndepositional age cluster, as well as the presence of volcanic tuff layers in the studied succession, indicates the likely extensive influence of an active volcanic arc in the depositional area. The age cluster of 205–288 Ma suggests, in contrast, that older granitic batholiths were also being sourced. Precambrian detrital zircon grains would have been derived from continental blocks with mainly Proterozoic crusts, most likely from the North China Craton. When combined with available geochemical, petrological, and palaeontological data, our detrital zircon data demonstrate that deposition of the Nishinakayama Formation was located at an active continental margin, possibly close to the northern extremity of the South China Craton. Abundant terrigenous clastics were likely supplied to the sedimentary basin from the Qinling‐Dabieshan‐Sulu Suture Zone, which was formed by the collision of the North and South China cratons.

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Geochemistry of Nd and Ce isotopes and REE abundances in Precambrian orthogneiss clasts from the Kamiaso conglomerate, central Japan.

Cited by 24 publications

References 36 publications

Ion microprobe U-Pb zircon geochronology of the Hida gneiss. Finding of the oldest minerals in Japan.

Ion microprobe U-Pb zircon geochronology of the Hida gneiss. Finding of the oldest minerals in Japan.

Crustal evolution history of Korean Peninsula in East Asia: The significance of Nd, Ce isotopic and REE data from the Korean Precambrian gneisses.

Palaeogeographic and tectonic setting of the Lower Jurassic (Pliensbachian‐Toarcian) Nishinakayama Formation, Toyora Group, SW Japan

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