|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy >
Vol.XXII, No.4 >
The Disappearance of the Coscinodiscus Yabei Zone in the Subarctic Hokkaido Region
| Title: | The Disappearance of the Coscinodiscus Yabei Zone in the Subarctic Hokkaido Region |
| Authors: | Koizumi, Itaru Browse this author |
| Issue Date: | Aug-1990 |
| Publisher: | 北海道大学 |
| Journal Title: | 北海道大学理学部紀要 |
| Journal Title(alt): | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy |
| Volume: | 22 |
| Issue: | 4 |
| Start Page: | 577 |
| End Page: | 589 |
| Abstract: | The overlapped ranges of Denticulopsis praedimorpha and Denticulopsis dimorpha, which belong to the same evolutionary lineage, were firstly recognized in the subarctic section of Hokkaido. The stratigraphic distribution of some diatom species around the boundary between the middle and late Miocene reveals diachronous distribution across the subarctic front by the effect of a "climatic wedge." |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/36767 |
| Appears in Collections: | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XXII, No.4
|
|
