Title Transcription
セイナン ニホン オヨビ チョウセン ハントウ ノ チュウシンセイ ゼン チュウキ ノ ナンタイ ドウブツ カセキグン
Title Alternative
Early to Middle Miocene molluscan faunas in southwest Japan and Korea
File
language
jpn
Author
Itoigawa, Junji
Description
Earlyto Middle Miocene molluscan faunas in southwest Japan and Korea are studied with respect to new data on molluscan assemblages, correlation and paleoposition of Southwest Japan in the viewpoints of paleobiogeography and paleoecology.
Two molluscan faunas are recognized in Early to Middle Miocene sequences in southwest Japan, the lower, of which age is 18+~16 Ma and the upper, 16~15- Ma. The difference between the lower and the upper faunas is represented by the presence of different species in the same genera and by the absence or presence of some species in either the lower or the upper fauna.
The lower fauna named the Akeyo Fauna lacks characteristic species suchas tropical sea species included in the upper fauna. The upper fauna belongs to the so-called Kadonosawa, Fauna and is similar to the molluscan fauna, in Korea.
The so-called Kadonosawa Fauna in southwest Japan and Korea represents strong influence of warm currents from the south in the beginning of the Middle Miocene (16~15Ma) which is also the time of the opening of the Sea of Japan.
Journal Title
Geological reports of Shimane University
Volume
6
Start Page
29
End Page
38
ISSN
0287816X
Published Date
1987-06-30
NCID
AN00054980
Publisher
島根大学理学部地質学教室
Publisher Aalternative
Department of Geology, Faculty of Science, Shimane University
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Shimane University
Remark
1-11 / 1982-1992
大久保雅弘教授退官記念論誌集,野沢保教授退官記念論詰集