2009 Fiscal Year Final Research Report
Evolutionary process of planktonic marine diatoms during the late Cenozoic Era.
| Project/Area Number |
19540498
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Stratigraphy/Paleontology
|
|---|
| Research Institution | National Institute of Advanced Industrial Science and Technology |
|---|
Principal Investigator |
YANAGISAWA Yukio National Institute of Advanced Industrial Science and Technology, 地質情報研究部門, 主任研究員 (10358210)
|
|---|
| Project Period (FY) |
2007 – 2009
|
| Keywords | 地質学 / 古生物学 / 古海洋学 / 進化 / 珪藻 / 微化石 / 植物プランクトン / 気候変動 |
|---|
| Research Abstract |
Dynamic evolutionary processes of the three marine planktonic diatom groups have been revealed by detailed diatom analysis of deep sea cores recovered in the middle- to high-latitude North Pacific, the low-latitude tropical Pacific and the Southern Oceans. Crucidenticula is a warm water extinct diatom genus composed of four evolutionay lineages, each of which expanded its geographic distribution into the high-latitudes during warm period of early to middle Miocene. The extinct diatom genus Denticulopsis consists of seven lineages, most of which are cold water diatoms showing a typical bipolar geographic pattern except for one cosmopolitan lineage. Neodenticula is an extant cold water diatom group born in the late Miocene. It shows a bipolar distribution during the late Miocene, but the Southern Ocean population became extinct in the early Pliocene.
|
-
-
-
-
-
[Journal Article] Chronological data for the middle Miocene to Pliocene sequence around the southwestern Sendai Plain, with special reference to the uplift history of the Ou Backbone Range2008
Author(s)
Fujiwara, O., Yanagisawa, Y., Irizuki, T., Shimamoto, M., Hayashi, H., Danhata, T., Fuse, K., Iwano, H
-
Journal Title
Bulletin of the Geological Survey of Japan 59巻
Pages: 423-438
Peer Reviewed
-
-
-
-
