Meltwater channel
A meltwater channel (or sometimes a glacial meltwater channel) is a
Different forms of subglacial channel are described in glaciological literature including Nye or N-channels, Röthlisberger or R-channels and Hooke or H-channels.[2] Tunnel valley is a related term descriptive of subglacial channels. Some examples of tunnel valleys in northwest England have also been described as iceways.[3] The depositional landforms known as kames and eskers may often be found in association with meltwater channels.
An urstromtal is a proglacial or ice-marginal channel common in Germany and Poland formed during various of the Pleistocene glaciations which gave rise to the substantial Scandinavian ice sheet. A spillway is a term sometimes used for a channel carved by water overflowing from, for example, a proglacial lake. Examples of major glacial lake outbursts creating spillways along the southern margins of the Laurentide icesheet in North America are documented.[4]
Meltwater channels associated with glaciation have also been identified on Mars.[5]
See also
References
- ^ "Meltwater channel".
- ^ Walder, J S. 2010. Röthlisberger channel theory: its origins and consequences, US Geological Survey, Cascades Volcano Observatory, https://www.cambridge.org/core/services/aop-cambridge-core/content/view/39BCA503939401F57BB79A5B0044528D/S0022143000213282a.pdf/rothlisberger_channel_theory_its_origins_and_consequences.pdf.
- ^ R K Gresswell, 1964 Origins of the Dee and Mersey Estuaries
- ^ "Catastrophic glacial-lake outburst spillways: Form and process relationships".
- ^ https://mars.jpl.nasa.gov/mgs/sci/fifthconf99/6237.pdf [bare URL PDF]