泥岩是由1/16mm以下的細小泥質沉積物所構成的沉積岩石，顏色灰至深灰，有時因風化或鐵染的影響呈黃褐色。泥岩富含黏土礦物，故遇水容易產生膨脹、或分散和凝聚，深具黏性與可塑性，故露出地表時因本身岩性脆弱，易被雨水或海水沖蝕；又因其土性黏滯，植物難以生長，故稱”惡地”，因形似荒蕪的月球表面，又有”月世界”之稱。澎湖西嶼鄉小門村的小門嶼地質公園其地層含有凝灰質的砂泥岩，長年在風蝕與海蝕的共同作用下顯現出著名的似惡地地形。本中心所收藏的標本採自望安鄉東嶼坪嶼的東坪村。
泥岩是由1/16mm以下的細小泥質沉積物所構成的沉積岩石，顏色灰至深灰，有時因風化或鐵染的影響呈黃褐色。泥岩富含黏土礦物，故遇水容易產生膨脹、或分散和凝聚，深具黏性與可塑性，故露出地表時因本身岩性脆弱，易被雨水或海水沖蝕；又因其土性黏滯，植物難以生長，故稱”惡地”，因形似荒蕪的月球表面，又有”月世界”之稱。澎湖西嶼鄉小門村的小門嶼地質公園其地層含有凝灰質的砂泥岩，長年在風蝕與海蝕的共同作用下顯現出著名的似惡地地形。本中心所收藏的標本採自望安鄉東嶼坪嶼的東坪村。
Mudstone is a sedimentary rock composed of fine muddy sediments below 1/16mm,its color is gray to dark gray, sometimes yellow-brown due to weatheringiron staining. Mudstone is rich in clay minerals therefore, when coming into contact with water, it is easy to swelldispersecondensebecome deeply viscousplastic. When exposed to the earth surface, it can be easily eroded by rainseawater due to its fragile lithology. As its soil is sticky, it is difficult for plants to growis thus called "bad land". Because of its shape like a barren lunar surface, it is also known as the "Moon World". The Hsiaomen Islet Geopark in Hsiaomen Village of Siyu Township is well known for its badland-like terrain, which contains tuffaceous sandmudstone under the combined effect of wind erosionmarine erosion for many centuries. The specimens collected by this center are from Dongping Village located on Dongyupingyu of Wang-an Township.
