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Cockercombe tuff : ウィキペディア英語版 | Cockercombe tuff
Cockercombe Tuff is a greenish-grey, hard pyroclastic rock, formed by the compression of volcanic ash containing high quantities of chlorite, which gives it its distinctive colour. It is found almost exclusively in the south-eastern end of the Quantock Hills near Cockercombe, Somerset, England from where it has been quarried for centuries. Quantock Lodge is built from Cockercombe tuff. ==References==
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「Cockercombe tuff」の詳細全文を読む
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