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    June 07

    巴字第1023號:北回歸線標、掃叭遺址[野地旅0153]

    前言:
     
      這是個幾乎純粹觀光的點位。
     
    ----------------------正文‧分隔線---------------------
     
    地點:花蓮縣瑞穗鄉舞鶴村北回歸線標、掃叭遺址
    日期:民國九十八年五月二十三日
    性質:地理系考察(台灣地形,帶隊老師:沈淑敏)
     
      *舞鶴台地附近地形圖,等高線間距為100公尺。圖中綠色方框為數值高程模型損毀處,並非有什麼驚人的大地圖案(難不成是遺址作祟)!
     
      舞鶴台地有很多有名的東西,諸如茶葉、北回歸線標、掃叭遺址等等,當然還有它在地形學上的特殊意義。舞鶴台地(又稱掃叭台)為花東縱谷中少有的幾個大規模「紅土台地」,其比高都有上百公尺,在地形學上定義為「LT3(高位河階第三層)」,瑞穗聚落則在FT3(低位河階第三層)上,從地形圖看起來像是由紅葉溪所沖積出來的扇一樣。附近地形如苓仔齋一帶也有兩層高位河階和四層低位河階,鶴岡則有高位兩階、低位五階,若再往秀姑巒溪切穿海岸山脈的公路去,更可看到精采的曲流河階;圖中下方民生以北有個小丘,則為腱狀丘地形。舞鶴台地受到地殼擠壓影響(傾動),略呈東南高、西北低的傾斜方向,台地面剛好成為種茶葉所需的坡地,倒是值得注意一下;此外,也有人說該台地的形成與古奇美溪襲奪古花蓮溪上游有關。
     
      *從瑞穗清蓮寺香客大樓二樓眺望舞鶴台地。
     
      *從掃叭石柱眺望紅葉溪口,可見土壤紅化以及受構造作用產生的傾斜。
     
      好啦,地形學看完了,來觀光一下。舞鶴北回歸線標是我去過的第一個回歸線標,過兩天即將前往海岸山脈另一頭的北回歸線標,至於嘉義水上的北回歸線標則一直無緣得見。老實說也沒什麼,就是一群地理系的鄉民們在拍照而已。既然都來了,也就順道去一趟掃叭石柱。掃叭石柱是國定三級古蹟,經研究被認為是卑南文化圈的巨石遺址之一,兩根石柱分別高四公尺多與三公尺多,石柱頂端有人工鑿痕。有人推測是古老聚落的遺跡,石柱是屋舍的支柱,不過想想挺有趣的,若是幾千年前的老祖宗,他們有住挑高的房屋嗎?
     
      基本上,卑南巨石文化本來就是個迷,何必那麼認真看?
     
      倒是如果各位看官有興趣(尤其你又是讀歷史或人類學的),歡迎去研究研究然後告訴下巴我答案唷!
     
      *北回歸線標。
     
      *掃叭石柱,就是孤零零的兩根石柱。
     
      *年代距今約3000年,新石器時代晚期。
     
      *在掃叭石柱前喜見光華號列車從遠方駛過紅葉溪床。

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