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The River Tonge is a short river flowing close to Bolton, in Greater Manchester, England. The Tonge is formed at the ''Meeting of the Waters'', where Astley Brook, flowing from the Smithills area in the west, meets the southerly-flowing Eagley Brook. From there, the Tonge flows southwards, to the east of Bolton, past Springfield, where it is joined by Bradshaw Brook, at the end of its route from the Jumbles and Wayoh reservoirs, close to Tonge Fold. The Tonge joins the River Croal at Darcy Lever, shortly before the Croal's confluence with the River Irwell. Tonge Bridge section is a part of the river north of Tonge Bridge designated as a site of special scientific interest (SSSI).〔(【引用サイトリンク】 work=English Nature ) 〕〔(【引用サイトリンク】 work=Nature on the Map )〕 The site is 0.7 hectares (1.8 acres) and comprises the steep west bank of the river. It was designated an SSSI 1987 for its geological interest, principally the fluvial sandstone which has yielded pteridosperm seeds, known as ''Trigonocarpus''. The well preserved nature of the seeds make it of considerable sedimentological and palaeogeographic interest.〔 It is one of only seven geological SSSIs in Greater Manchester. ==See also== Manchester Bolton & Bury Canal 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「River Tonge」の詳細全文を読む スポンサード リンク
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