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东南亚是全球构造最复杂的地区之一。它是由许多来自冈瓦纳大陆北部边缘的微陆块经过古生代至新生代一系列构造活动而最终缝合在一起的。其中,除一些古陆块外,还有一些是火山弧及增生楔,后者是在构造活动中新产生的地体。印支地块和华南地块是在中生代早期碰撞缝合在一起的,构成了古南海北部陆缘。新生代南海地区经历过四次构造事件,发生过两次陆块分离和海底扩张,产生了四个次海盆,形成了今日的构造景观。多扩张中心和多次海底扩张受控于周缘陆块的构造运动的形式(平移和转动)及方向。这是边缘海的一个重要构造特征。
Southeast Asia is one of the most complex areas in the world. It was eventually sutured by many micro-continental blocks from the northern margins of the Gondwanaland through a series of tectonic activities from Paleozoic to Cenozoic. Among them, in addition to some ancient land blocks, there are some volcanic arcs and accretion wedge, the latter is in the tectonic activity of the new ground. The Indosinian and South China blocks were slammed together in the early Mesozoic and formed the northern margin of the ancient South China Sea. The Cenozoic South China Sea experienced four tectonic events, two separate territorial separations and seafloor expansion, resulting in four sub-sea basins, forming today’s tectonic landscape. Multiple expansion centers and multiple submarine expansions are controlled by the form (translation and rotation) and orientation of tectonic movements of the peripheral land mass. This is an important tectonic feature of the marginal sea.