Flaser bed

Flaser beds are a sedimentary bedding pattern created when a sediment is exposed to intermittent flows, leading to alternating sand and mud layers. While flaser beds typically form in tidal environments, they can (rarely) form in fluvial conditions - on point bars or in ephemeral streams.cite journal
author = Martin, A.J.
year = 2000
title = Flaser and wavy bedding in ephemeral streams: a modern and an ancient example
journal = Sedimentary Geology
volume = 136
issue = 1-2
pages = 1-5
url = http://linkinghub.elsevier.com/retrieve/pii/S0037073800000853
accessdate = 2008-04-29] Individual sand ripples are created, which are later infilled by mud during quieter flow periods. These mud drapes are typically a minor constituent of the deposit; they can consolidate within three hours, protecting the underlying layer from erosion.cite journal
author = Martin, A.J.
year = 2000
title = Flaser and wavy bedding in ephemeral streams: a modern and an ancient example
journal = Sedimentary Geology
volume = 136
issue = 1-2
pages = 1-5
doi = 10.1016/S0037-0738(00)00085-3] Flaser bedding typically forms in high-energy environments. [cite web|title=Tidal deposits|url=http://www.uwm.edu/Course/geosci697/tidal/tidal-deposits.html|author=Tom Bellile |date=10-23-03 (with photograph)] cite journal
author = Reineck, H.E.
coauthors = Wunderlich, F.
year = 1968
title = Classification And Origin Of Flaser And Lenticular Bedding
journal = Sedimentology
volume = 11
issue = 1-2
pages = 99-104
doi = 10.1111/j.1365-3091.1968.tb00843.x]

References