石灰岩 特徵 海洋中生物的骨骼或殼中含有碳酸鈣,生物死後殼體堆積在海床中形成石灰岩,所以石灰岩主要成分就是碳酸鈣。 常見的造礁生物有珊瑚、貝類或藻類等。最主要的是珊瑚。 辨識重點 表面孔隙多,滴上稀鹽酸會產生氣泡。 野外觀察 在墾丁、離島地區適合珊瑚生長,常見珊瑚礁。 珊瑚礁(綠島) 珊瑚礁岩(綠島) 珊瑚礁石灰岩(墾丁) 石灰岩地形(喀斯特地形) 碳酸鈣非常容易溶於水中,水中所含的碳酸鈣過飽合時,碳酸鈣就會析出沈澱形成特殊石灰岩地形,例如碳酸質溫泉的四周經常沈澱形成石灰華,石灰岩洞中的石鐘乳、石筍、石柱、石簾等都是化學作用形成的石灰岩地形。 石簾(白楊步道) 石鐘乳(綠島) 石筍(墾丁) 石柱(山東淄博)
珊瑚礁(綠島)
珊瑚礁岩(綠島)
珊瑚礁石灰岩(墾丁)
石簾(白楊步道)
石鐘乳(綠島)
石筍(墾丁)
石柱(山東淄博)
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