从太平洋到亚洲大陆的过渡带到处为深海沟所限,太平洋地壳沉没于这些海沟中。众所周知,太平洋西岸与东岸大不相同,在东岸海洋板块潜入大陆之下,太平洋板块直接同北美和南美大陆板块接壤。由火山岛弧和陆缘海组成的宽2000—3000公里的带位于太平洋与欧亚大陆之间的西部。这种不同虽在很早就被看出,但是至今仍未找到令人信服的答案。在萨哈林岛地区,太平洋板块与欧亚大陆每年以9.3厘米的速度相互靠近。但其实与欧 The transition from the Pacific Ocean to the Asian continent is circumscribed by deep trenches, where the Pacific crust sinks. As we all know, the west coast of the Pacific Ocean is very different from the east coast. Under the ocean plate in the east coast sank into the mainland, the Pacific plate directly bordered on the North American and South American continental plates. The 2,000-3,000 km wide zone of volcanic island arcs and continental margins is located in the western part of the Pacific Ocean between Eurasia and Eurasia. Although this difference has been seen very early on, no convincing answer has yet been found. In the Sakhalin area, the Pacific Plate and Eurasia are approaching each other at 9.3 centimeters per year. But in fact with Europe