Tectonics of the Chinese Mainland with special reference to the Qinling Tectonic Zone and the Vangtzi Platform.

本次文武塾国际科研项目的主要成果如下：纳丹哈达山脉由上古生界灰岩、绿岩、中晚三叠世层状燧石岩和中侏罗统硅质页岩组成；这些岩石被包裹在中侏罗世后的碎屑岩中。Nadanhada山脉的岩性组合、年龄、放射虫组合和地质构造与日本西南部的淡巴-米诺-阿什奥地体非常相似。这表明Nadanhada山脉是Tamba-Mino-Ashio地体的北延伸。东北地区和锡霍特-阿林地区被划分为坎卡地体、纳丹哈达-西锡霍特-阿林地体、东锡霍特-阿林地体和特图克地体等构造地层。上面列出的地体是在侏罗纪至白垩纪时期沿亚洲大陆东部边缘增生的。在增生时期，东亚由长江和中朝两大板块组成。3 .虽然在秦岭缝合带中，扬子陆块与中朝陆块的碰撞时间存在较大争议，但根据本研究项目获得的资料，如秦岭缝合带中分布的印支花岗岩、古生代扬子陆块与中朝陆块的岩生相对比等，我们认为秦岭与中朝陆块的碰撞始于三叠纪，结束于侏罗世。秦岭缝合带近期的形变似乎是沿平行于缝合带的断层和郯庐断裂带的走滑运动的结果。在更大的范围内，这些活动被解释为印度和欧亚大陆碰撞的结果。

The main results of this Monbusho International Scientific Research Program are as follows:1. The Nadanhada Range in Northeast China is composed of upper Paleozoic limestone, greenstone, middle to late Triassic bedded chert, and middle Jurassic siliceous shale; these rocks are enclosed in post-middle Jurassic clastic rocks. The lithologic association, ages, radiolarian assemblgaes and geologic structure of the Nadanhada Range are very similar to those of the Tamba-Mino-Ashio terrane in Southwest Japan. This indicates that the Nadanhada Range is the northern extension of the Tamba-Mino-Ashio terrane.2. Northeast China and Sikhote-Alin regions are subdivided into some tectonostratigraphic terranes such as the Khanka terrane, the Nadanhada-Western Sikhote-Alin terrane, the Eastern Sikhote-Alin terrane and the Tetyukhe terrane.3. The terranes listed above were accreted along the eastern margin of the Asian continent in Jurassic to Cretaceous time. At the time of accretion, East Asia is made up of the Yangtzi and Sino-Korean terranes. Although the timing of collision in the Qinling suture zone between the Yangtzi and Sino-Korean terranes are highly contro-versial, we believe that the collision began in Triassic time and completed in the Jurassic on the basis of the data obtained by this research program, for example, the Indosinian granites distributed in the Qinling suture zone, and litho- and bio-facies contrasts between the Yangtzi and Sino-Korean terranes during Paleozoic time.4. Recent deformation in the Qinling suture zone seems to result from the strike-slip movement along the faults parallel to the suture zone and along the Tan-Lu fault zone. In larger scale, these activities are explained as the results of the collision of India and Eurasia.