| 西南日本黒濑川带的解剖：晚二叠世和早侏罗世增生混杂岩的构造-地层学与浅变质作用 |
| |
| 关键词:Kurosegawa belt accretionary complex Jurassic radiolarians southwest Japan |
| 基金项目: |
|
| 摘要点击次数: 2939 |
| 全文下载次数: 2509 |
| 摘要: |
| Anatomy of the Kurosegawa Belt, Southwest Japan: Insights from Tectono-stratigraphy and Low-grade Metamorphism of Late Permian and Early Jurassic Accretionary Complexes |
| The Kurosegawa belt forms a relatively narrow terrane that can be traced continuously throughout southwest and central Japan. The major constituent continental fragments of the Kurosegawa belt include Early Paleozoic granitic rocks, high-grade metamor-phic rocks, Carboniferous metamorphic rocks (epi-dote-amphibolite facies), Triassic-Early Jurassic metamorphic rocks (pumpellyite-actinolite facies), serpentinites of unknown age, Silurian–Devonian volcanoclastic rocks intercalated with limestones, and Permian–Jurassic shallow marine sediments (e.g., Ichikawa et al., 1956; Maruyama et al., 1984; Faure, 1985; Yoshikura et al., 1990; Aitchison et al., 1991, 1996; Hada et al., 1992, 2001; Isozaki et al., 1992). These diverse rock suites are highly disrupted, form-ing lenticular bodies within the Late Permian accre-tionary complex (AC) which collectively are covered by younger (Cretaceous) marine to brackish water sediments (e.g., Aitchison et al., 1991; Isozaki et al., 1992). We characterize the tectono-stratigraphic ar-chitecture and low-grade metamorphism of the accre-tionary complex preserved in the Kurosegawa belt of the Kitagawa district in eastern Shikoku, Southwest Japan, in order to understand its internal structure, tectono-metamorphic evolution, and assessments of displacement of continental fragments within the complex. |
| Hidetoshi HARA,Kurihara TOSHIYUKI,Hiroshi MORI.2012.Anatomy of the Kurosegawa Belt, Southwest Japan: Insights from Tectono-stratigraphy and Low-grade Metamorphism of Late Permian and Early Jurassic Accretionary Complexes[J].Acta Geoscientica Sinica,33(s1):16-17. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|