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題名 | 彭佳嶼、棉花嶼、花瓶嶼及基隆嶼之地質與地形資源=Geological and Geomorphic Resources of Pengjia, Mianhua, Huaping, and Keelung Islands |
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作者 | 何恭算; 王士偉; 戴昌鳳; Ho, Kung-suan; Wang, Shih-wei; Dai, Chang-feng; |
期刊 | 國家公園學報 |
出版日期 | 20091200 |
卷期 | 19:4 2009.12[民98.12] |
頁次 | 頁46-64 |
分類號 | 356.232 |
語文 | chi |
關鍵詞 | 彭佳嶼; 棉花嶼; 花瓶嶼; 基隆嶼; 地質與地形資源; Pengjia; Mianhua; Huaping; Keelung; Geological and geomorphic resources; |
中文摘要 | 至更新世火山噴發所堆積而成的島嶼。彭佳嶼有四期火山產物,包括最早期之凝灰岩和火山礫凝灰岩,第二期之矽質玄武岩和高鋁玄武岩熔岩流,第三期之火山渣與凝灰岩,以及最晚期之高鋁玄武岩岩脈,在該島東側海崖有完整的火山噴發層序出露;棉花嶼火山活動與彭佳嶼相當,但未見高鋁玄武岩熔岩流與岩脈;花瓶嶼則主要由矽質玄武岩所組成。基隆嶼全島由石英安山岩所構成,具有典型的斑狀組織,在岩性上與其它三島明顯不同。北方四島有相當完整的火山地形,如火山口、火山錐,以及多樣而優美的海蝕地形資源,包括海崖、海蝕洞、海蝕平台、海蝕溝、海蝕凹壁、海蝕柱、壺穴、蜂窩岩等。由於這些島嶼具有極高的觀光與教育價值,本文建議未來能夠規劃成為國家級的「火山地質公園」。 |
英文摘要 | Pengjia, Mianhua, Huaping, and Keelung Islands (PMHK) located offshores of northeastern northeastern Taiwan consist of late Pliocene to Pleistocene volcanics. The volcanics in Pengjia Island can be devided into four episodes: the first is mainly composed of tuff and lapilli tuff; the second is represented by tholeiitic and high-Al basaltic flow; the third scoria and tuff; and the fourth a high-Al basaltic dike which crosscuts the surrounding rock and represents the latest volcanic activity. These volcanic sequences are well-exposed on the eastern cliff of the Pengjia Island. Except the high-Al basaltic flow and dike that were not found, the Mianhua Island is essentially characterized by volcanic suites similar to those of Pengjia Island. In Huaping Island, the dominant volcanics are tholeiites. In comparison with other islets of the PMHK volcanic province, Keelung Island is composed entirely of massive quartz andesites with typical porphyritic texture. Volcanic rocks with well-developed volcanic topography as well as diverse and interesting marine erosional landscape were found in the PMHK volcanic province. These landscapes contained volcanic crater, volcanic cone, sea cliff, sea cave, marine erosion platform, notch, sea stack, pothole, and honeycombed rock. These islets are significant for tourism and nature education, and based on the results from this research this area is suggested to be established as a national volcanic geological park. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。