< p >澳大利亚海洋科学研究所的网页< a href = " http://www.aims.gov.au/docs/projectnet/how-the-gbr-present-time.html " rel = " noreferrer " >大堡礁是如何形成的< / >是洪水前海岸平原的结果当海平面较低。从网站进一步解释:< / p > < blockquote > < p >沿海平原包括河谷和大大小小的山。珊瑚最好倾向于生长在山,因为他们破了,水是最动荡的浪潮。因此,尽管珊瑚可能长在任何可用的浅表面淹没海岸平原,珊瑚礁倾向于形成有山的地方。< / p > A diagram of the formation is shown below:
Image source
So, not the result of volcanoes, but rather the after effects of coastal plain inundation.