澎湖之美~海蝕平台
照片主題:龍埕海蝕平台
拍照時間:2010/06/07 02:14PM
照片說明:
海蝕平台,又叫波蝕棚。一開始海崖受到海浪沖刷,在海面高低潮線的位置向岩壁侵蝕,形成凹洞。之後,凹洞會漸漸形成較深的洞穴,在海水的持續沖刷下,洞穴無法承受上方海崖的重量而崩落,崩落後的石塊也因海水沖刷碎成小石塊,被海水帶走,最後才形成平臺。
在照片左邊還可以看到深灰色的玄武岩脈,形成海蝕崖與海蝕柱呢!在海蝕平台上也可清楚的看到向斜構造喔!

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on 星期五, 4月 5th, 2013 at 5:13 AM and is filed under 地理實察.
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