Terrane analysis of Mesozoic complexes in East Asia

Research Project

Project/Area Number	03041037
Research Category	Grant-in-Aid for international Scientific Research
Allocation Type	Single-year Grants
Section	Field Research
Research Institution	Nagoya University
Principal Investigator	MIZUTANI Shinjiro Department of Earth Sciences, Nagoya University, 理学部, 教授 (50022538)
Co-Investigator(Kenkyū-buntansha)	孫智峰南京大学, 地球科学系, 講師 YANG Qun Nanjing Institute of Geology and Palaeontorogy, Academia Sinica, 南京地質古生物研究所, 研究員張慶龍南京大学, 地球科学系, 助教授 SHAO Ji'an The Department of Geology, Peking University, 地質系, 助教授 NAGAI Hiromi Dating and Materials Research Center, Nagoya University, 年代測定資料研究センター, 助手 (10183526) HATTORI Isamu School of Education, Fukui University, 教育学部, 教授 (60020111) ISHIKAWA Terumi Nagoya Gakuin University, 講師 (60089844) YAIRI Kenji College of General Education, Gifu University, 教養部, 教授 (20022650) SUN Zhi Feng Department of Earth Sciences, Nanjing University ZHANG Qing Long Department of Earth Sciences, Nanjing University
Project Period (FY)	1991
Project Status	Completed (Fiscal Year 1991)
Budget Amount *help	¥5,000,000 (Direct Cost: ¥5,000,000) Fiscal Year 1991: ¥5,000,000 (Direct Cost: ¥5,000,000)
Keywords	Feng-Hui terrane / Ndadanhada terrane / Triassic / North China Block / South China Block / Qinling Belt / East Asia / Collision
Research Abstract	According to the exchange program between Nanjing University and Nagoya University, we have carried out a special cooperative work on the geological structure of the Asian continent. This work suggests that one of the key-terranes in East Asia is the Nadanhada terrane of northeast China, and the other is a terrane in the Qinling Belt. On the basis of these investigations, we continued our studies in this project on (1) the Nadanhada terrane, and on (2) the western part of the Qinling Belt. (A) S. Mizutani, J. A. Shao and Q. Yang have performed the geological and micropaleontological investigations of the Triassic-Jurassic radiolarian rocks of the Nadanhada terrane, and disclosed that i) the radiolarians are commonly found in a formation straddling on the boundary between Triassic and Jurassic age, ii) the radiolarian assemblages belonging to the Triassic and the Jurassic are very similar to each other between China and Japan, and iii) in spite of these similarities, the lithological nature of the host-rock from which the fossils have been extracted is somewhat different ; the rock is bedded chert in Japan, whereas it is siliceous shale in China. (B) S. Mizutani, T. Ishikawa, I. Hattori and H. Nagai together with the Chinese geologists (Q. L. Zhang and Z. F. Sun) visited the western part of the Qinling Belt. The Triassic Feng-Hui terrane composed of epiclastic complex is recognized there ; in addition, a Devonian coarseclastic stratigraphic terrane may well be distinguished. Presence of these terranes implies that the Qinling Belt itself is an elongated collage zone developed in a suture between North China Block and South China Block.