Radiolarian Biostratigraphy and its International Correlation

放射虫生物地层学及其国际关联

• 批准号: 01304008
• 负责人: MIZUTANI Shinjiro
• 金额: $ 10.75万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01304008/
• 关键词: Radiolarians; Biostratigraphy; International Correlation

Main results obtained by present co-operative research are summarized as follows :1. Jurassic radiolarian zones in Japan was correlated with those in North America and Europe by means of cross-check using fossil individuals. Although the perfect international radiolarian zonation has not yet been established, these studies clarified the problems in correlation : matching and misma tching among the zones.2. Ages of some Jurassic to Cretaceous radiolarian assemblages were calibrated with newly found ammonite fossils in Shikoku.3. Paleozoic to Mesozoic Radiolaria-bearing siliceous rocks were collected from outside Japan, such as USA, Mexico, New Zealand, Australia, China, USSR, Filippines and Indonesia, and biogeographic, latitudinal and ecological characteristics of the faunas from these specimens were examined. Some of the results are :(1) Middle Triassic to early Jurassic bedded cherts and middle to late Jurassic clastic rocks are the key lithology diagnostic to the late Mesozoic accretionary complex distributed along the eastern continental margin of Asia.(2) In New Zealand, juxtaposition of Tethyan and non-Tethyan faunas was recognized by using radiolarian fossils.4. Oeanic sediments containing well-preserved and not-disturbed radiolarian remains from the Indian and Pacific Oceans were examined. Jurassic to Cenozoic on-land radiolarian zonations were reinforced by these drilling data.5. Phylogenic studies on some genus, such as Jurassic Eucyrtidiellum and Tricolocapsa, made it easy to correlate radiolarian zonations established in Japan with those in other regions, and gave a paleontological basis to the zonations.

目前合作研究取得的主要成果概括如下： 1．通过使用化石个体进行交叉检查，将日本侏罗纪放射虫区与北美和欧洲的放射虫区进行了关联。虽然国际上尚未建立完善的放射虫区划，但这些研究阐明了相关性问题：区带之间的匹配与不匹配。 2．一些侏罗纪至白垩纪放射虫组合的年龄是用四国新发现的菊石化石校准的。3。从日本以外的美国、墨西哥、新西兰、澳大利亚、中国、苏联、菲律宾和印度尼西亚收集了古生代至中生代含有放射虫的硅质岩石，并对这些标本中的动物群的生物地理、纬度和生态特征进行了研究。主要研究结果如下：（1）中三叠世至早侏罗世层状燧石和中晚侏罗世碎屑岩是诊断亚洲东部大陆边缘晚中生代增生杂岩的关键岩性。（2）在新西兰，利用放射虫化石识别了特提斯动物群和非特提斯动物群的并置。4．对含有来自印度洋和太平洋的保存完好且未受干扰的放射虫遗骸的海洋沉积物进行了检查。这些钻探数据进一步证实了侏罗纪至新生代陆上放射虫分区。5．对某些属（如侏罗纪 Eucyrtidiellum 和 Tricolocapsa）的系统发育研究使日本建立的放射虫分区与其他地区的分区之间的联系变得容易，并为这些分区提供了古生物学基础。

项目成果

K.タイヒ(). 02%33)

K.泰奇()。02%33)

Aita,Y.and GrantーMackie,J.A.: "Late Jurassic Radiolaria from the Kowhai Point Siltstone,Murihiku terrane,Morth Island,New Zealand." Ishizaki,K.and Saito,T.(eds.) Centenary of Japanese Micropaleontology,Terra Sci.Pub.Co.,Tokyo.

Aita, Y. 和 Grant-Mackie, J.A.：“来自新西兰莫斯岛 Murihiku 地体 Kowhai 点粉砂岩的晚侏罗世放射虫。Ishizaki, K. 和 Saito, T.（编辑）日本微型古生物学百年纪念，Terra Sci.Pub.Co，东京。

Igo,H.: "Paleozoic strata in the Hida "Gaien"Belt." Ichikawa,K.,Mizutani,S.,Hara,I.,and Yao,A.(eds.) PreーCrataceous Terranes of Japan,Publication of IGCP Project No.224. 41-48 (1990)

Igo, H.：“飞驒“外苑”带的古生代地层。Ichikawa, K.、Mizutani, S.、Hara, I. 和 Yao, A.（编辑）日本前白垩纪地体，出版IGCP 项目编号 41-48 (1990)。

Sporli,K.B.,Aita,Y.and Gibson,G.W.: "Juxtaposition of Tethyan and nonーTethyan Mesozoic radiolarian fauna in melanges,Waipapa terrane,North Island,New Zealand." Geology. 17. 753-756 (1989)

Sporli, K.B.、Aita, Y. 和 Gibson, G.W.：“新西兰北岛怀帕帕地体中特提斯和非特提斯中生代放射虫动物群的并存”，17. 753-756 (1989)。

Yoshikura,S.,Hada,S.and Isozaki,Y.: "Kurosegawa Terrane." Ichikawa,K.,Mizutani,S.,Hara,I.,and Yao,A.(eds.)PreーCrataceous Terranes of Japan,Publication of IGCP Project No.224. 185-201 (1990)

Yoshikura, S.、Hada, S. 和 Isozaki, Y.：“黑濑川地体。Ichikawa, K.、Mizutani, S.、Hara, I. 和 Yao, A.（编辑）日本前白垩纪地体” ，IGCP 项目第 224 号出版（1990 年）。