论文部分内容阅读
一般认为,二叠纪至侏罗纪特提斯海的无脊椎动物群是生活在低纬度的,它们可以与高纬度低分异度的动物群相区别.因此,环太平洋边缘这些低纬度的动物群移位到高纬度地区可以提供所谓可疑地体(Suspect terrans)或外来地体(displaced terrans)的重要证据.到目前为止,最充分的证据是根据北美西部边缘提出的,它北达阿拉斯加南部,但也有令人信服的证据来证明大陆块体沿亚洲东北边缘实际向北运动.至于南半球,新西兰的Torlessc地体似乎向南运动了很大距离,但没有动物群的证据来证明沿南美安底斯边缘有较大规模运动的可疑地体.不仅特提斯和北方动物群,而且东、西太平洋动物群的分子都是可以发现的,这些动物群的分布支持了原始大洋邻近大陆边缘分布着不同大小的岛屿的观点,而不是一个单个陆块——太平洋古陆的分裂问题.
It is generally believed that the Permian-Jurassic Tethys Sea invertebrates are living at low latitudes and are distinguished from high-latitude and low-divergence fauna. Therefore, the low latitudes of the Pacific Rim The relocation of fauna to high latitudes can provide important evidence of so-called Suspect terrans or displaced terrans, and the best evidence to date is based on the western North West edge of North Alaska South but there is also convincing evidence that the continental blocks actually move northward along the northeastern edge of Asia. As for the southern hemisphere, New Zealand’s Torlessc terrane appears to have traveled a great distance south, but there is no evidence of fauna to prove that along the South American On the edge of Andes there is a more suspicious land of greater scale, not only Tethys and northern fauna, but also molecules from the eastern and western Pacific fauna that support the original oceanic proximity to the continental margin The viewpoints of islands of different sizes are distributed rather than a single landmass - the division of ancient Pacific land.