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Compton Martin Ochre Mine : ウィキペディア英語版 | Compton Martin Ochre Mine
Compton Martin Ochre Mine () is a 0.85 hectare geological and biological Site of Special Scientific Interest located on the north side of the Mendip Hills, immediately south west of Compton Martin village, Somerset, notified in 1988. ==Geological Interest==
It is a Geological Conservation Review site. The site comprises a network of underground tunnels and surface exposures on the eastern fringe of Compton Wood. The site exposes bedded hematitic iron ore (red ochre) in Triassic Dolomitic Conglomerates which was deposited underwater as a layered mass of iron oxide pellets of various types, probably in an ephemeral lake or pond fed by hot springs when the Mendip area was occupied by a desert environment some 220 million years ago during late Triassic times.〔(【引用サイトリンク】 work=English Nature )〕 Red ochre is an iron oxide mineral, which was used in paint-making. It is believed that the mine was owned by Mendi Oxide & Ochre Co. Ltd., of Wick.
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