出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/04/05 17:35 UTC 版)
Ancaster stone is Middle Jurassic oolitic limestone, quarried around Ancaster, Lincolnshire, England. There are three forms of this limestone, Weather Bed, Hard White and Freestone. Ancaser stone is a generic term for these forms of limestone found at quarries in the vicinity of the village of Ancaster including Gregory's Quarry (SK992409), 2½ kilometres south of Ancaster.