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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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Date 07/29/2016 
Creator Dolphin, Glenn
Digital Publisher Calgary : University of Calgary 
Location
Country Canada
Municipality Kananaskis Improvement District
How can you use this image?
Permitted uses are outlined in License and Usage Rights. Usage Restrictions can only be waived by the copyright holder. Add to cart and make a request if you have any questions. 
Copyright Status In Copyright
Usage Rights Commercial, Education, Exhibition, Instruction, Private study, Publication, Remix and adapt, Research
Conditions of Use https://libanswers.ucalgary.ca/faq/199047 
License URL https://creativecommons.org/licenses/by/4.0/
License CC BY 4.0
Attribution 
Attribution Ripple laminations, Mt. Yamnuska, 2016, (CU123401) by Dolphin, Glenn, is used under CC BY 4.0. Courtesy of Geoscience Images Collection, Libraries and Cultural Resources Digital Collections, University of Calgary.