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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Oltu stone ： ウィキペディア英語版 Oltu stone Oltu stone ((トルコ語:Oltu taşı)), aka black amber, is a kind of jet found in the region around Oltu town within Erzurum Province, eastern Turkey. The organic substance is used as semi-precious gemstone in manufacturing jewellery. ==Location and extraction== Oltu stone, sometimes called also "Erzurum stone", is principally mined in the villages northeast of Oltu town, around Tutlu Dağı (Yasak Dağ) as well as in Alatarla, Hankaskışla and Çataksu villages. The mountainous, rough region with steep slopes is high.〔(【引用サイトリンク】publisher=Bita Turizm )〕 Oltu stone beds are formed when fossilized trees are subject to diastrophism resulting in folding. Beds of this organic substance are in thickness. Extraction is done by digging narrow tunnels and shafts below ground. There are around 600 quarries in the region.〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oltu stone」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.