三重県志摩半島東部の黒瀬川帯中生界から見出されたジュラ紀・白亜紀放散虫化石

Ohta, Takeshi; Imai, Tomofumi; Ishida, Naoto; Saka, Yukiyasu

doi:10.5575/geosoc.2012.0030

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…8) show shallow-marine deposits along the seashore in the Arashima area, commonly consisting of sandstone, mudstone, chert, and locally acidic tuffs. An exposure in the middle part of this sequence shows the recently recognized Shiranezaki Formation in unconformable contact with the Matsuo Group (Ohta, et al, 2012). In the Futaji area isolated masses of chert crop out along with locally adjacent bedded sandstone and mudstone (Gt-3).…”

Section: Significant Rock Exposures Demonstrating Geodiversity Along mentioning

confidence: 99%

Identification of prospective geosites that show features of the active continental margin in eastern Kii Peninsula, Southwest Japan

Suzuki

Takahashi

2017

Acta Geoturistica

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The eastern Kii Peninsula exhibits a variety of rock outcrops, fossils, and other geological features that illustrate the formation history of the Japanese Islands. This work aims to describe the geotourism potential of the region based on the significant rock exposures, and sets out the basis for establishing geosites in this region in the future. Geologically important sites have been selected, together with places of unique history and culture within the northern part of the eastern Kii Peninsula, including the Ise and Toba areas. The results of this study include a detailed description of the geology and history of the region, together with an evaluation of the relative value of each selected locality as a geosite. Proper development and promotion of the proposed sites would make the sites available for education and tourism, and provide opportunities for suitable development and the popularization of geological knowledge.

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Section: Significant Rock Exposures Demonstrating Geodiversity Along mentioning

confidence: 99%

Identification of prospective geosites that show features of the active continental margin in eastern Kii Peninsula, Southwest Japan

Suzuki

Takahashi

2017

Acta Geoturistica

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Regional correlation of a late Permian coherent sequence recognized within the Kurosegawa Belt in Shima Peninsula, Mie Prefecture, Southwest Japan

Uchino

Suzuki²

2016

Jour. Geol. Soc. Japan

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Late Permian (Wuchiapingian-early Changhsingian) radiolarian fossils such as Albaillella cavitata, A. protolevis, Follicucullus scholasticus, and Triplanospongos musashiensis were discovered in felsic tuff and tuffaceous mudstone from the Kurosegawa Belt on Shima Peninsula, Mie Prefecture, Southwest Japan. Strata containing felsic tuff and tuffaceous mudstone show coherent, non-deformed facies and have an apparent thickness of ca. m. Although these strata were formerly interpreted as Lower Cretaceous forearc deposits of the Matsuo Group, based on lithofacies similarities, there is now little doubt that they represent a coherent late Permian sequence. Such a sequence is reported from Kii Peninsula (part of which is Shima Peninsula) for the first time, and it appears to have a significant regional extent, stretching from Kyushu Island through Shikoku Island to Shima Peninsula. The coherent late Permian sequence on Shima Peninsula can be chronologically correlated with the Doi Group and parts of the Ichinose Group on Shikoku Island, and also with parts of the Kuma and Kozaki formations on Kyushu Island.

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Geochemistry and origin of dolerite blocks in serpentinite in the Kurosegawa Belt of the Shima Peninsula, Mie Prefecture, Southwest Japan

Uchino

2020

Jour. Geol. Soc. Japan

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Dolerite occurs as blocks within serpentinite in the Kurosegawa Belt, located between the Northern and Southern Chichibu belts on Shima Peninsula, Mie Prefecture, Southwest Japan. On the peninsula, this dolerite is considered as a significant component of the Kurosegawa Paleozoic Rocks that define the Kurosegawa Belt. However, dolerite itself is not necessarily the component because it also appears, to a minor extent, in Jurassic accretionary complexes distributed across the Northern and Southern Chichibu belts, with a previous work having associated the dolerite with the Jurassic accretionary complexes of the Chichibu Belt on the basis of geochemistry and structural relationships. Whole-rock geochemical analyses were conducted on dolerite within the serpentinite in the Shima Peninsula to determine its origin. The dolerite has a geochemical signature consistent with islandarc tholeiite, according to geochemical discrimination diagrams and trace-element spider-diagrams normalized to N-MORB and chondrite. This feature suggests that the dolerite is not an oceanic component within the Jurassic accretionary complexes. On the basis of the geochemistry of the mafic Kurosegawa Paleozoic Rocks in other areas, the dolerite within the serpentinite on the Shima Peninsula is inferred to be correlative with one of the Kurosegawa Paleozoic Rocks. The dolerite might also be associated with the Mitaki Igneous Rocks in the Kurosegawa Belt in Shikoku, Southwest Japan.

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三重県志摩半島東部の黒瀬川帯中生界から見出されたジュラ紀・白亜紀放散虫化石

Cited by 3 publications

References 7 publications

Identification of prospective geosites that show features of the active continental margin in eastern Kii Peninsula, Southwest Japan

Identification of prospective geosites that show features of the active continental margin in eastern Kii Peninsula, Southwest Japan

Regional correlation of a late Permian coherent sequence recognized within the Kurosegawa Belt in Shima Peninsula, Mie Prefecture, Southwest Japan

Geochemistry and origin of dolerite blocks in serpentinite in the Kurosegawa Belt of the Shima Peninsula, Mie Prefecture, Southwest Japan

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