羽越地向斜堆積物の有機堆積学的研究 : 特に多環芳香族炭化水素類の堆積環境的意義に言及して

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Nickel and vanadyl porphyrins and polycyclic aromatics in about 250 muddy rocks from Neogene Tertiary of the so-called "Uetsu geosynclinal basin", which is located along the present coast of the Sea of Japan of the northern Honshu have been determined from the standpoint of sedimentological study. Outline of the results is as follows. The similar contents of nickel porphyrin found between the thin layers of black clay stone intercalated in the Onnagawa Formation and the black massive mudstone composing the overlying Funakawa Formation, and the distinctly scattered values of extractable organic matter contents obtained from both surface and subsurface samples of the Onnagawa and the lower part of the Funakawa may be attributed to the characteristics of Flysch type sediments composing the Onnagawa Formation. Comparison of the triangular diagrams which show the relative amounts of the nickel porphyrin, vanadyl porphyrin and the polycyclic aromatics in the sediments from the various districts indicates that Akita and Yamagata districts have the same pattern while Aomori and Niigata districts have the different pattern, from that of the Akita and Yamagata respectively. The results will be ascribed to longitudinal or lateral change in the "Uetsu" geosynclinal sedimentation. Polycyclic aromatic compounds show a distinct preference for accumulation in coals and coaly shales of continental sediments, and the samples from the younger formations of the "Uetsu Geosyncline" also show higher concentration of those compounds. It is suggested that the ratio of polycyclic aromatics to extractable organic matter contents provides useful criteria for distinguishing environments of deposition.
日本地質学会の論文
1971-07-31

羽越地向斜堆積物の有機堆積学的研究 : 特に多環芳香族炭化水素類の堆積環境的意義に言及して

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