✦ LIBER ✦

A note on sand ripples developing in sandstone rock seepages of the Weald, UK

✍ Scribed by Pentecost, Allan

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 113 KB
Volume: 24
Category: Article
ISSN: 0360-1269
DOI: 10.1002/(sici)1096-9837(199912)24:13<1257::aid-esp57>3.0.co;2-f

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✦ Synopsis

Ephemeral sand ripples are described from steep rock surfaces in the UK. They are unconsolidated or stabilized by algae and bryophytes. The sand is transported by flowing water to produce a semi-regular pattern of sinuous ripples averaging 6±8 mm apart and with a relief not exceeding 4 mm. The ripples may be initiated by the formation of a self-perpetuating capillary wave template. Sand grains accumulate on the template to form the fully developed ripples. Ultimately, gravitational forces or flooding lead to their destruction. Travertine rimstones may be initiated in the same manner.