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1605年海南岛东寨港发生了重要的地震陷落事件,本文在东寨港采集了305cm长的柱状岩芯DX孔,对岩芯进行了粒度、年代学、地球化学元素的分析,发现地球化学元素在164cm附近有明显的突变,岩芯沉积物岩性特征与地球化学元素均反映了从陆相沉积向海相沉积的转变,对海南岛东寨港地震陷落事件有明显的沉积响应,岩芯沉积记录反映1605年东寨港地震沉陷的幅度至少2.0m。
In 1605, an important earthquake subsidence occurred in Dongzhaigang, Hainan Island. In this paper, a 305cm long DX hole of columnar core was collected in Dongzhaigang. The granularity, geochronology and geochemical elements of the core were analyzed. It was found that the geochemistry The obvious change of the element around 164cm shows that lithology and geochemical elements of core sediments reflect the change from continental sediments to marine sediments, and have obvious depositional response to the earthquake subsidence event at Dongzhaigang, Hainan Island. The rock Core sediment records reflect the amplitude of the Dongjiazang earthquake subsidence of at least 2.0m in 1605.