The Journal of the Geological Society of Japan
Online ISSN : 1349-9963
Print ISSN : 0016-7630
ISSN-L : 0016-7630
Volume 51, Issue 606
Displaying 1-4 of 4 articles from this issue
  • Masao MINATO
    1944 Volume 51 Issue 606 Pages 83-90
    Published: March 20, 1944
    Released on J-STAGE: April 11, 2008
    JOURNAL FREE ACCESS
    Die Feststellung stratigraphischer Horizonte ist die Grundlage jeder Korrelation., Da aber der Begriff "Horizonte" rein theoretischer Natur und von der lokalen Fazies bzw., Machtigkeit der ihm zugehorigen Ablagerungen unabhangig ist, so kann er als Ercheinungsform nur mit ausserordentilchen Schwierigkeiten festgestellt werden., Man hat sich deshalb gewohnt, die stratigraphische Gliederung lediglich nach dem Fazieswechsel durchzufuhren, man darf jedoch bei der entscheiden Frage nach der Richtigkeit dieser Bestimmung niemals die Einseitigkeit eines solches Verfahrens aus dem Auge verlieren., Bei der Gegenuberstellung der Fazies und ihrer Faunen sind zwei Fragen klar zu unter-scheiden, einmal die nach der Zeit und das andere Mal nach der lokalen Ausbildung (Fazies) z., B., entsprechen betr., der lokalen Ausbildung in der Tabelle I der Kawaguti- und Kattisawa-Stufe Brachiopoden und Bryozoen, der Sasisawa- und Iwaizaki-Stufe Foraminiferen und Korallen., Dabei ist nicht ausgemacht., ob die Grenzschichten der einzelnen Fazies miteiander ubereinstimmen oder nicht., Betrachtet man den Fossilien-Inhalt, so ist er zwischen der Kawaguti- und Kattisawa- bzw., Sasisawa- und Iwaizaki-Stufe vollig verschieden., Bei der Kawaguti-Stufe handelt es sich um Isogramma-Faunen (Spiriferina cristata SCHLOTH., ), Aviculopecten sp., Lyttonia richthofeni (KAYSER) HAYASAKA Bellerophon sp., Schwagerina sp., Isogramma sp, ), bei der Kattisawa-Stufe um Lyttonia-Faunen (Parafusulina wanneri (Schubert), Richthofenia japonica MABUTI, Amblysiophonella sp., Productus (Marginifera) flemingii de KON, Lyttonia richthofeni (KAYSER) HAYASAKA, Spiriferina sp., a, Spiriferina sp., b, Stacheoceras iwaizakiensis MABUTI, Chonetes sinnuosa SCHELLWIEN, Spiriferina multiplicata SOWERBY var., Kitakamiensis MINATO), bei der Sasisawa-Stufe um Pseudoshwagerina-Faunen (Nipponitella explicata HANZAWA, Quasifusulina longissima (SCHELLWIEN), Pseudoschwagerina schellwieni (YABE) HANZAWA, Pseudoschwagerina (Zellia) nunosei HANZAWA, Schwagerina vulgaris (SHELLWIEN), Parafusulina kaerimizuensi-(OZAWA), Triticites cf., truncata CHEN, Amblysiphonella cf., shikokuensis YABE et SUGIYAMA, Sakamotosawas nella permicum MINATO, (MS), Mizzia velebitana SCHUBERT, Schwagerina vulgaris var., globosa (SHELLWEIN), Spirifer (Munnella?) sp., Paraschwagerina sp., ?, Waagenophyllum sp., Michelinia multitabulata YABE et HAYASAKA) und bei der Iwaizaki-Stufe um Yabeina-Faunen (Waagenophyllum indicum (WAAGEN et WENTZEL), Waagenophyllum sp., Wentzelella timorica (GERTH), Wentzelella subtimorica HUANG, Wentzelella kattisawaensis YABE et MINANO, Wentzelloides maiyaensis YABE et MINATO, Yatsengia mabutii MINATO, Yabeina shiraiwensis OZAWA, Yabeina hayasakai OZAWA, Verbeekina verbeeki GEINITZ, Neoschwagerina sp., Mizzia velebitana SCHUBERT, usw., )., Aus diesem Grund muss der Gliederung nach dem Fazieswechsel eine zeitliche Bedeutung zuerkannt werden., Man kann also daraus schliessen, dass jeder Faziesgliederung eine bestimmte Faunenzone entspricht.,
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  • Tosio SUDO
    1944 Volume 51 Issue 606 Pages 91-96
    Published: March 20, 1944
    Released on J-STAGE: April 11, 2008
    JOURNAL FREE ACCESS
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  • Kiyosi ASANO
    1944 Volume 51 Issue 606 Pages 97-99
    Published: March 20, 1944
    Released on J-STAGE: April 11, 2008
    JOURNAL FREE ACCESS
    While ezaming the fossil Foraminifera from the Pliocene of Yamaguti, Kakio-tyo, Kawasaki-si, Kanagawa-ken, the following new form belonging to the Rotaliidae has been found ; it is believed to represent a new genus.,
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  • Koiti SYZUKI
    1944 Volume 51 Issue 606 Pages 100-109
    Published: March 20, 1944
    Released on J-STAGE: April 11, 2008
    JOURNAL FREE ACCESS
    1) Six new localities of Viviparus jimboi SUZUKI were found in the Oligocene Isikari series in the Province of Isikari, Hokkaido (Pl., 5(2), figs., 4-6)., 2) Among the thiarids from the Isikari series and the Uryu group in Hokkaido, the following three forms were distinguished., Semisulcospira fiscina (YOKOYAMA):- Thiara fiscina YOKOYAMA, 1932, Journ., Fac., Sci., Imp., Univ., Tokyo, ser., 2, vol., 3, pt., 6, p., 237, pl., 1, figs., 2, 3., Semisulcospira fiscina SUZUKI, 1941, Journ., Fac., Sci., Imp., Univ., Tokyo, ser., 2, vol., 6, pt., 2, p., 22, pl., 1, figs., 5-8., Melanoides (Semisulcospira) fiscina OTATUME, 1942, Journ., Geol., Soc., Japan, vol., 49, p., 586, p., 162, pl., 10, figs., 9-20., Occurence: Isikari series and Uryu group., Semisulcospira fiscina yokoyamai, n., subsp., ;- Semisulcospira fiscina SUZUKI (non YOKOYAMA, 1932), 1941, loc., cit., pl., 1, fig., 5., Melanoides (Semisulcospira) fiscina OTATUME (non YOKOYAMA), loc., cit., pl., 10, figs., 7, 8., Compared with S., fiscina s., s., this shell is narrower, having the much weaker longitudinal ribs., Occurrence: Isikari series and Uryu group., Melanoides otatumei SUZUKI, n., sp., :- Thiara fiscina OTATUME (non YOKOHYAMA), 1942, loc., cit., p., 162, pl., 10, figs., 1-6., This species is distinguishable from Semisulcospira fiscina s., s., and S., fiscina yokoyamai by the somewhat larger and narrower shell, the higher spire with straight outlines, the lower last whorl, and the more indistinct longitudinal ribs which are almost obsolete on the lower part of each whorl., The general outline of this shell may assure its reference to the genus Melanoides, though its aperture as usually seen in Semisulcospira and rather rare in Melanoides remarkably protruded downward beyond the base., Holotype: Pl., 10, figs., 1a-c (OTATUME, 1942)., Paratypes: Pl., 10, figs., 2-6 (OTATUME, 1942)., Occurrence: Isikari series., 3) Two new localities of Margaritifera perdahurica (YOKOYAMA) were found in the Isikari series in the Province of Isikari, Hokkaido (Pl., 6(3), figs., 1, 2)., 4) A specimen obtained from the later Oligocene Urahorp group in the Province of Kusiro, Hokkaido, appears to be referable to the genus Lamprotula, though it is too imperfect to make an exact identification (Pl., 6(3), fig., 7)., It is an internal mould of the left valve and is ovate in outline with the beak at the anterior extremity and the strong hinge-plate., It bears some resemblances to L., paihoensis KING, L., paihoensis minor LEROY, L., fibrosa (HEUDE), L., nojimensis UEJI and L., simanensis SUZUKI (MS), but the antero-ventral corner is not so protruded and the hinge-plate is not so strong as in the other forms., It is very interesting that a Tertiary shell which is closely related to Lamprotula occurs in Hokkaido., 5) Judging from the external features of the shell, Unio kobayasiensis OTUKA from the Early Miocene Yotuyaku series in Iwate-ken (Pl., 5(2), figs., 3a, b) may belong to the genus Inversidens., It differs from the recent Nipponese I., reiniana (KOBELT) in having the much higher anterior part and the more straight ventral margin., Furthermore, it has the anterior part much shorter than in the other recent forms of the genus as well as in I., isikariana SUZUKI from the Isikiri series in Hokkaido., 6) A new locality of Lanceolaria pisciformis (YOKOYAMA) in the Isikari series in Hokkaido was noted., 7) A strongly deformed specimen of Lepidodesma septemtrionale SUZUKI was obtained from the Early Miocene Estoru coal-bearing formation in the Nayosi coal-field, South Karahuto (Pl., 5(2), fig., 7, pl., 6(3), fig., 3)., It agrees well with the holotype specimen (a young shell) from the Isikari series in Hokkaido and some specimens from the Dui coal-bearing formation in the Dui coal-field, North Sachalin (Pl., 6(3), figs., 4-6). [the rest omitted]
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