引言斐济海台对研究西南太平洋活动板块边界的地质学家来说长期以来一直是个谜。实际上这个宽广而浅的台地横跨于太平洋和印度-澳大利亚板块活动边缘之上。看来它与其周围的许多构造活动带基本上又是相隔离的。虽然在斐济群岛有大量新第三纪火山活动和变形的证据,但对海台内当今“板内”的变形程度仍有疑问。斐济陆块的大小,结合长英质侵入岩、 Introduction The Fiji coast has long been a mystery to geologists who study the boundaries of the Southwest Pacific plate. In fact, this broad and shallow platform spans over the margins of Pacific and Indo-Australian plate activities. It appears that it is largely isolated from the many tectonic bands around it. Although there is ample evidence of Neogene volcanism and deformation in the Fiji Islands, there is still doubt about the extent of today’s “intraplate” deformation in the island. The size of the Fiji block, combined with the felsic intrusive rocks,