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Article Navigation >  Acta Sedimentologica Sinica  > 2008  >  26(5): 797-803

  • School of Geoscience and Survey Engineering, East China Institute of Technology, Fuzhou, Jiangxi 344000

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2008-10-10
  • The Dingjiashan Formation of the Middle Permian in Jiangshan, Zhejiang Province is composed of the black lamellar and bedded cherts, siliceous siltstone, and siltstone intercalated with micrite. The black bedded cherts are characterized by high SiO2, rich in Al2O3 and Fe2O3, low TiO2 and MnO, low REE values, Ce deficiency and positive anomaly Tm value. The characteristics of cathodeluminescence and lithology have proved that these siliceous rocks were originated by replacement of sedimentary carbonates, such as bioclastic limestone, dolomitization were took place before silification. The chemical analysis data demonstrate that siliceous matter came from the normal underwater and continental silica gel, not from hydrothermal or volcanic silicon.
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Publishing history
  • Received:  1900-01-01
  • Revised:  1900-01-01
  • Published:  2008-10-10

浙江江山丁家山组层状硅质岩阴极发光特征及成因探讨

  • School of Geoscience and Survey Engineering, East China Institute of Technology, Fuzhou, Jiangxi 344000
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2008-10-10

Abstract: The Dingjiashan Formation of the Middle Permian in Jiangshan, Zhejiang Province is composed of the black lamellar and bedded cherts, siliceous siltstone, and siltstone intercalated with micrite. The black bedded cherts are characterized by high SiO2, rich in Al2O3 and Fe2O3, low TiO2 and MnO, low REE values, Ce deficiency and positive anomaly Tm value. The characteristics of cathodeluminescence and lithology have proved that these siliceous rocks were originated by replacement of sedimentary carbonates, such as bioclastic limestone, dolomitization were took place before silification. The chemical analysis data demonstrate that siliceous matter came from the normal underwater and continental silica gel, not from hydrothermal or volcanic silicon.

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