地球上为什么会像今天这样分布着几块大陆,30年前人们提出了板块构造学理论,成为20世纪最伟大的学说之一。为揭开大陆离散聚合的历史,科学家们在近30年里,一直在寻找大陆碰撞的直接证据——缝合线。和青藏高原发现的几条大陆缝合线相比,绵延在华北大地的大陆缝合线“年岁”要“老”得多。继发现迄今世界上最古老的大洋岩石圈残片后, Why on earth would you like to distribute a few continents today? People put forward plate tectonics theory 30 years ago and became one of the greatest theories of the 20th century. To unravel the history of discrete continents in the continent, scientists have been searching for direct evidence of the continental collision for nearly 30 years - sutures. Compared with the several mainland suture found on the Qinghai-Tibet Plateau, the mainland suture that stretches in the vast land of North China is much older than that of old. Following the discovery of the oldest oceanic lithosphere to date in the world,