鼻頭角




坐标：25°07′41.6″N 121°55′23.3″E / 25.128222°N 121.923139°E / 25.128222; 121.923139




鼻頭角




鼻頭角的海崖地形


鼻頭角，臺灣東北角海岸的岬角，因猶如「鼻頭」而得名[1]。隸屬於東北角暨宜蘭海岸國家風景區[1]。其行政區則位於新北市瑞芳區[1]。距離基隆市東方約30公里[1]。由於鼻頭角正好位於東西向海岸及南北向海岸的交匯點，為一突出的海岬[1]。與最東的三貂角和最北的富貴角，合稱「北臺灣三角」[1]。


目前全區規畫成「鼻頭角公園」，設有步道，並有鼻頭角燈塔佇立在海岬的最尖端上，供往來船隻夜晚航線指引與確保航行安全之用。




目录






  • 1 地理


    • 1.1 地景


    • 1.2 地質




  • 2 參考文獻


  • 3 外部連結





地理



地景


鼻頭角的海蝕地形景觀多樣而豐富，尤其以海崖、海蝕凹和海蝕平台之發育相當旺盛[1]。此外，各種小地形，如蜂窩岩、蕈狀岩、生痕化石、交錯層、豆腐岩、小斷層、海蝕溝、海蝕洞、海蝕凹壁、海蝕門、巨礫灘、火成岩侵入岩脈等地景[1]。



地質


東北角海岸位於臺灣西部麓山帶與雪山山脈之中，主要由3千多萬年前的古老沉積岩及其變質岩的石英岩與硬頁岩等岩層，以及約百萬年前由基隆火山活動所形成的火山岩所構成[2]。


鼻頭角終年受到風浪的侵蝕，露出的地層屬於新生代上新世的砂、頁岩層，主要由桂竹林層二鬮段所組成，砂岩裡夾有頁岩層，由於頁岩受雨水侵蝕及風化的速度較快，因而形成深凹的海蝕凹壁。當下部形成海蝕凹壁後，因重力及風化作用，砂岩塊常沿著節理崩落，堆積而成坡腳。隨著風化作用不斷進行，使得海崖後退，形成海蝕平臺，鼻頭角海崖外側，就有寬廣的海蝕平臺。除了海崖與海蝕平臺之外，岬角上亦有海階地形的發育[2]。



參考文獻





  1. ^ 1.01.11.21.31.41.51.61.7 鼻頭角公園. 交通部觀光局. 2013-09-16 [2015-07-26] （中文（台灣）‎）. 


  2. ^ 2.02.1 莊文星. 東北角海岸鼻頭角—龍洞地質公園地質與地形自然景觀數位典藏 (PDF). 國立自然科學博物館館訊第299期. [2015-07-26] （中文（台灣）‎）. 




外部連結






维基共享资源中相关的多媒体资源：鼻頭角


























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