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首页> 外文期刊>Chinese science bulletin >Crustal activities recorded in coral reefs in the northwestern South China Sea
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Crustal activities recorded in coral reefs in the northwestern South China Sea

机译：南海西北部珊瑚礁记录的地壳活动

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摘要

Coral reefs in the northwest of South China Sea have recorded the information from not only the environmental variation but also the crustal activities there during their development. The main crustal activities correlated with the coral reef development include fault, seismic, and volcano activities, etc. The high-resolution spark seismic profiles in the northwestern South China Sea show that the fault activities in the coral reef region have been clearly recorded, and appear as neonatal faults incising reefs. Earthquakes in the coral reef region are rather intense, especially the two occurring on December, 31, 1994, and January, 10, 1995, around the southwest of Leizhou Peninsula, with the magnitude of 6.1 and 6.2, respectively. They have great influence on the growth of the local coral reefs. Quaternary vol-canos are active in the northwestern South China Sea, especially around the southwest of Leizhou Peninsula, and they have obvious control of the coral reef development. Some submarine volcanoes form the substrates of coral reef, while a few emerge above the sea surface and form coral islands.
机译：南海西北部的珊瑚礁不仅记录了环境变化的信息，还记录了其发展过程中那里的地壳活动。与珊瑚礁发育有关的主要地壳活动包括断层，地震和火山活动等。南海西北部的高分辨率火花地震剖面表明，珊瑚礁地区的断层活动已被清楚记录，并且表现为切开礁石的新生儿缺陷。珊瑚礁地区的地震非常强烈，特别是两次地震分别发生在1994年12月31日和1995年1月10日，雷州半岛西南部，震级分别为6.1和6.2。它们对当地珊瑚礁的生长有很大影响。第四纪火山活动活跃于南海西北部，尤其是雷州半岛西南部，对珊瑚礁的发育有明显的控制作用。一些海底火山形成了珊瑚礁的基底，而另一些则出现在海面之上并形成了珊瑚岛。

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