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相關文獻
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頁籤選單縮合
| 題 名 | 臺灣高山冰河地形的新發現=Discuss for Glacial Landform in Taiwan Alpine Region |
|---|---|
| 作 者 | 楊建夫; | 書刊名 | 建中學報 |
| 卷 期 | 5 1999.12[民88.12] |
| 頁 次 | 頁349-370 |
| 分類號 | 354.52 |
| 關鍵詞 | 上次冰期; 圈谷; 冰坎; 直接証據; Last glaciation; Cirque threshold; Direct evidence; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 臺灣高山有無冰河遺跡,學術界有正反兩方的論點。日據時代的日本學者與大陸 學者,都支持臺灣高山區在第四紀上次冰期時發生過冰河。但是光復後臺灣地質界卻持河源 崩谷的論點。証明冰河遺跡,有賴直接証據與間接証據。直接証據的研究方法著重擦痕、冰 坎和沉積物分析,尤其是鑑別沉積碎屑表面擦痕的地形作用環境。間接証據的研究方法很多 ,一般多賴以地貌分析。在考量研究地點的易達性,本研究選擇雪霸國家公園內的雪山主峰 周圍圈谷群為研究區,並在方法上採直接証據。研究結果顯示,雪山主峰圈谷群的所有圈谷 底都分布著冰坎,以及1號圈谷的5號冰坎上遺留冰蝕擦痕的地貌証據。這些直接証據充分 指示出雪山山區,在上次冰期曾發生過冰河作用。 |
| 英文摘要 | There is an argument on glacial relics in Taiwan alpine region. Geomorphologists of Japan, In Japanese occupation period, and of Mainland China supported the viewpoints that the glaciers did occur in Taiwan alpine region during the Last Glaciation, but the geologists, in Kuoming government period, suggested the cirques in mountain area were ever the valley heads. There are two evidences to support Quaternary glaciers in the alpine areas, direct evidence and indirect evidence. The study of direct evidence focusses on analysis of sediments, especially to identify the glacial striation on the surface of debris or rock, and indirect evidence focuses on terrain analysis. Because of the accessibility in Shesan, I chose the cirques of Shesan Peak in Shei-Pa National Park as the study area and in method I adopted the direct evidence. I have got the result that I found the striations on the rocks and cirque threshold in every cirques of Shesan Peak, and the glacial processes occurred in Shesan area during the Last Glaciation. |
本系統中英文摘要資訊取自各篇刊載內容。