2024-03-29T06:16:43Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00003218
2022-12-15T03:36:23Z
176:488:489
453:454
Eocene calcareous nannofossils and dinoflagellate cysts from the Iwaya Formation in Awajishima Island, Hyogo Prefecture, southwest Japan, and their Eocene calcareous nannofossils and dinoflagellate cysts from the Iwaya Formation in Awajishima Island, Hyogo Prefecture, southwest Japan, and their geologic implications
兵庫県淡路島北部の第三系岩屋層から産出した始新世石灰質ナンノ・渦鞭毛藻化石とその意義
兵庫県淡路島北部の第三系岩屋層から産出した始新世石灰質ナンノ・渦鞭毛藻化石とその意義
山本, 裕雄
41488
栗田, 裕司
41489
松原, 尚志
41490
Iwaya Formation
Kobe Group
Awajishima Island
calcareous nannofossils
dinoflagellate cysts
Eocene
“Setouchi Miocene Series”
Geologic age of the "Miocene" Iwaya Formation in Awajishima Island is examined by means of calcareous nannofossils and dinoflagellate cysts. Calcareous nannofossil flora indicates biozone NP17 to NP20 or CP14b to CP15b and a late Middle Eocene to Late Eocene age. The dinoflagellate cyst assemblages also show approximately the same age. These results reveal that the Iwaya Formation is the constituent of the Eocene-Oligocene Kobe Group. Molluscan assemblages resembling those from the Iwaya Formation have been known from the "Setouchi Miocene Series" in the coastal area of the eastern Seto Inland Sea. Molluscan fauna and stratigraphic correlation of the "Miocene" in this area should also be re-examined on the basis of precise geochronologic data.
journal article
日本地質学会
2000-05
application/pdf
地質学雑誌
5
106
379
382
地質学雑誌
AN00141768
00167630
https://niigata-u.repo.nii.ac.jp/record/3218/files/ZC_106(5)_379-382.pdf
jpn