Diagenesis of arc-derived sandstones of Cretaceous formations in the Queen Charlotte Islands,British Columbia,Canada (鮫島輝彦先生追悼論文集)

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概要

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• Diagenesis of sediments derived from a magmatic arc provenance may greatly differ from that of sediments derived from an intracratonic- or foreland-type provenance. Sediments from the magmatic arc are compositionally immature and rich in volcanic and sedimentary rock fragments. Sandstone samples of mid- to Upper Cretaceous formations in the Queen Charlotte Islands, British Columbia, Canada, contain either large amounts of pseudomatrix or authigenic cements. An inverse relationship between the content of pseudomatrix and that of authigenic cements suggests that ductile deformation of soft rock fragments has reduced much of the original porosity and has preceded the formation of authigenic cement. The described inverse relationship clearly contradicts the recent report of diagenesis of sandstones rich in volcanic rock fragments (Hawlader 1990 ).

• 静岡大学の論文

著者

• Yagishita K

  Iwate Univ. Iwate

• Yagishita Koji

  Department Of Geology Faculty Of Education Iwate University

関連論文

• A note on tectonic evolution within a Neogene basin: new evidence from the Early to Middle Miocene Ichinohe Basin, northeast Japan
• Lithology and palynology of Neogene sediments on the narrow edge of the Kitakami Massif (basement rocks), northeast Japan : Significant change for depositional environments as a result of plate tectonics
• Diagenesis of arc-derived sandstones of Cretaceous formations in the Queen Charlotte Islands,British Columbia,Canada (鮫島輝彦先生追悼論文集)

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