2013年
銚子地域の鮮新統名洗層の基底礫岩に由来する石灰質団塊礫から産したジュラ紀新世末~白亜紀新世前期の放散虫化石
地質学雑誌
- ,
- ,
- 巻
- 119
- 号
- 9
- 開始ページ
- 647
- 終了ページ
- 652
- 記述言語
- 日本語
- 掲載種別
- DOI
- 10.5575/geosoc.2013.0030
- 出版者・発行元
- 一般社団法人 日本地質学会
This paper reports on latest Late Jurassic to early Late Cretaceous radiolarians extracted from a gravel of calcareous nodule that originated from the basal conglomerate of the Pliocene Naarai Formation. The calcareous nodule (ca. 12 cm in length) contains vertebrate bones, and lithologically similar gravels have been known to contain Albian and Tithonian ammonoids. The age of the radiolarians from the calcareous nodule ranges from latest Tithonian to late Cenomanian, based on the occurrence of Holocryptocanium barbui. This age range is concordant with ammonoid ages reported previously from gravels of calcareous nodules derived from the Naarai Formation.
- リンク情報
- ID情報
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- DOI : 10.5575/geosoc.2013.0030
- ISSN : 0016-7630
- CiNii Articles ID : 130003391957
- CiNii Books ID : AN00141768