The Journal of the Geological Society of Japan
Online ISSN : 1349-9963
Print ISSN : 0016-7630
ISSN-L : 0016-7630
Volume 48 , Issue 574
Showing 1-7 articles out of 7 articles from the selected issue
  • Hideho SAWADA
    1941 Volume 48 Issue 574 Pages 313-321
    Published: July 20, 1941
    Released: April 11, 2008
    JOURNALS FREE ACCESS
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  • Manabu KOBAYASI
    1941 Volume 48 Issue 574 Pages 322-331
    Published: July 20, 1941
    Released: April 11, 2008
    JOURNALS FREE ACCESS
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  • Isamu SIBATA
    1941 Volume 48 Issue 574 Pages 332-335
    Published: July 20, 1941
    Released: April 11, 2008
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  • Nobuo KURATA
    1941 Volume 48 Issue 574 Pages 336-350
    Published: July 20, 1941
    Released: April 11, 2008
    JOURNALS FREE ACCESS
    The so-called Torinosu limestone gives rise to many stratigraphical and palaeontological questions Whether one can find any zone- or facies-index in the fossils contained in the limestone is one of the subjects dealt with in this paper., As discussed in the Japanese text, the writer failed to find any index fossil among the four zones of limestone-lenses in the Torinosu series in the Togano basin and its vicinities, but its further study may show that some fossils are restricted to particular facies of sedimentation., Observations were made on the occurrence of the limestone in the area., Facts collected at many places where the limestone masses are exposed made the writer think of there having been coralreefs in a shallow clear sea, while some other facts suggest that they are partly deposits in a shallow sea under saploperic condition.,
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  • Saburo OISHI, Kazuo HUZIOKA
    1941 Volume 48 Issue 574 Pages 351-353
    Published: July 20, 1941
    Released: April 11, 2008
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    More than 40 species (of which six are living) of Platanus are known in the world, the oldest known being the Cretaceous., They may tentatively be divided into four groups in respect to the foliar characters : (1) Racemosa group, leaf deeply lobate, (2) Aceroides-occidentalis-orientalis group, leaf shallowly lobate, (3) Guillelmae group, leaf not lobate or obsoletely lobate, and (4) Busilobata group, leaf peltate., Of these groups, the foliar characters between (2) and (3) appear to merge gradually from one to another in many cases., Among the Tertiary plants of Hokkaido and Karahuto the present authors discriminated six different types as follows : P., aceroids GOEPP., Isikarian Stage (Palaeogene)., Hokkaido : Woodwardia Sandstone of Central Hokkaido ; Uryu coal-bearing beds of the Uryu coal-field., Karahuto : Naibuti coal-bearing beds., Urahoroian Stage (Oligocene-Miocene)., Hokkaido : Syakubetu coal-bearing beds of eastern Hokkaido., P., Guillelmae GOEPP., Isikarian Stage., Hokkaido : Woodwardia Sandstone., Karahuto : Naibuti coal-bearing beds., Urahoroian Stage., Syakubetu coal-bearing beds in eastern Hokkaido., Kawabataian Stage (Miocene)., Hokkaido : Kayanuma coal-bearing beds of the Kunnui Series in southwestern Hokkaido (as cfr., P., Guillelmae)., Cfr., P., aceroides latifolia KNOWLT., Isikarian Stage., Woodwardia Sandstone of Central Hokkaido., P., Mabutii sp., nov., Urahoroian Stage (Syakubetu coal-bearing beds)., P., sachalinensis ENDO., Isikarian Stage (Naibuti coal-bearing beds of Karahuto)., P., Heeri LESQ., Cretaceous (near Due coal mine, Russian Karahuto)., P., aceroides and P., Guillelmae are common and occur in association in most cases., Cfr., P., Guillelmae occurs from the Neogene beds of the Kayanuma coal mine, and this is the youngest record of fossil Platanus in the Asiatic continent (the authors recently recognized another Neogene Platanus from the Engelhardtia-bed of Tyosen)., P., Mabutii and P., sachalinensis are characterised by having peltate blade., Cfr., P., aceroides latifolia resembles the original specimen but is somewhat imperfect to admit precise comparison., P., Heeri has been recorded only from the Russian Karahuto but not known from Japan., In Hokkaido and Karahuto the development of Platanus began from the Cretaceous and it flourished most in the Palaeogene., It may be certain that it existed also in the early Neogene, but possibly disappeared since that time from these islands., The details may be printed in the Journal of Faculty of Science, Hokkaido Imperial University.,
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  • Saburo OISHI, Kazuo HUZIOKA
    1941 Volume 48 Issue 574 Pages 354-356
    Published: July 20, 1941
    Released: April 11, 2008
    JOURNALS FREE ACCESS
    There are about eighy living species of Marlea(=Alangium) distributing in Japan, Manchoukuo, China, and palaeotropical region of southeastern Asia., Of these, M., platanifolia SIEB., and ZUCC., and M., chinensis REHDER are living in the Japanese Islands, the northern most limit of the former being Prov., Kitami(N., L., 45°) of Hokkaido, while the latter the southern Kyusyu(N., L., 32°)., The authors recognized four different types of fossil Marlea from the Tertiary rocks of Hokkaido and Karahuto., They are M., basitruncata sp., nov., M., kusiroensis sp., nov., M., taiheiensis sp., nov., and M., basiobliqua sp., nov., The former three are the type of modern M., platanifolia, while the last one is the type similar to M., chinensis., M., basitruncata and M., basiobliqua have been derived from the Woodwardia Sandstone of the Isikari Series of Hokkaido (Isikarian Stage ; Palaeogene), M., kusiroensis from the Syakubetu coal-bearing beds of the Urahoro Series of Hokkaido (Urahorian Stage ; Oligocene-Miocene) and M., taiheiensis from the Esutoru coal-bearing beds of Karahuto (Kawabataian Stage ; Miocene)., In 1939, KRYSHTOFOVICH and BORSUK brought Ficus tiliaefolia (Al., BR., ) HEER and Buttneria aequalifolia (GOEPP., ) MEYER into one species and adopted the generic name Alangium taking the latter specific name., The present authors agree with these Russian authors in that the genus Alangium(=Marlea) is the more adequate generic designation for the named fossil types, yet the present authors bear a different opinion in bringing them into one specific type., Types referable to "Buttneria aequalifolia" are rather common in the Kawabataian flora of Hokkaido and Karahuto, but the comparison with the living types bearing similar foliar characters is now carrying on., The details may be printed in the Journal of Faculty of Science, Hokkaido Imperial University.,
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  • Toshio SUGIYAMA, Hirosi OKANO
    1941 Volume 48 Issue 574 Pages 357-361
    Published: July 20, 1941
    Released: April 11, 2008
    JOURNALS FREE ACCESS
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