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Ripple laminations, Mt. Yamnuska
Ripple laminations, Mt. Yamnuska
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Ripple laminations, Mt. Yamnuska
Symmetrical ripples are formed due to oscillatory currents associated with lower flow regime and a Froude number <1. The Froude number defines the ratio between inertial and gravity forces in the medium. These ripples are located on Mt.Yamnuska in Alberta, just outside of Banff National park. Remnants of the shallow inland sea that was once present over Alberta can be found in the Cretaceous rocks on Mt.Yamnuska, including these ripple marks that were formed in sand and silt by ocean currents. These ripples can be separated from dunes due to scale, dunes are greater than 10cm tall but share all other characteristics with ripples.
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Digitized Date
07/29/2016
Creator
Dolphin, Glenn
Digital Publisher
Calgary : University of Calgary
Country
Canada
Province
Alberta
Municipality
Kananaskis Improvement District
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In copyright
License URL
https://creativecommons.org/licenses/by/4.0/
Attribution
"Ripple laminations, Mt. Yamnuska", 2016, (CU123401) by , is used under . Courtesy of Collection, Libraries and Cultural Resources Digital Collections, University of Calgary.
Unique identifier:
CU123401
Legacy Identifier:
20190213_geoimage_Dolphin_e_0137
Type:
Geoscience Image
Size:
5184px × 3456px 74.67 MB