File:Jia-xian Sih-de Fossil Forest Reserve（WEI, WAN-CHEN）－甲仙四德化石自然保護區.jpg
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Jia-xian is one of the most important and abundant fossil producing areas in Taiwan. {{ WDPA|555593991}}
Summary
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| Description |
中文（臺灣）：四德化石谷是甲仙地區生產化石的主要地區，過去以出產甲仙翁戎螺、鶉螺、大香螺、旗蛤、顆粒圓魁蛤、牛角江珧蛤、火焰肋海扇蛤、高麗花月蛤等大型化石聞名。甲仙化石可追溯至中新世，屬關刀山砂岩層，少數為南莊層。是台灣西南部高山峻嶺之主要構成岩層，關刀山砂岩岩性堅硬，抗風化，侵蝕的能力遠遠超過接鄰之其他岩層，因此到處造成陡峻山稜。這一層砂岩尤其在楠梓仙溪以西，因為逆衝斷層之緣故，重複露出５至６次之多，形成一排排之山脊。山脊較高處多關刀山砂岩，其較兩翼之南莊層在沈積年代上來得年輕，兩種地層在台灣地形分區上均屬阿里山山脈。
English: Sih-de Fossil Valley shares majority of fossils all over Jia-sian. In the past, the place was known for its abundant resources of large fossils such as Jia-sian Pleurotomariidae, Tonnidae, Melongenidae, Acharax, Cucullaea, Atrina pectinata, flamboyant Pectinidae, Korean Lucinidae. Fossils in Jia-sian can be dated back to Miocene Period and belongs to Mt. Guang-dao sandstone layer and also a minority of Nan-jhuang Layer. It is the main composite of the mountains in the southwestern region. The sandstone in Guangdao Mountain has a harder composition than other types of stones in the area, enabling it to withstand weather erosion. This is the only reason why the major terrain in the region is the steeper hill. The sandstone layer, especially in the west of Nan-zih River, opened up five to six times due to a geological fault. This resulted in rows of mountain ridges. The higher part of the ridge has more Guangdao Mountain sandstone, which is younger than Nan-jhuang Layer in the side wings. The two layers belong to Ali Mountain in the category of a local topographic classification. |
| Date | |
| Source | Own work |
| Author | WEI, WAN-CHEN（魏琬臻） |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:04, 15 May 2021 | | 3,264 × 1,836 (4.39 MB) | WEI, WAN-CHEN (talk | contribs) | Uploaded own work with UploadWizard |
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