Abstract
ABSTRACT In the shallow Waddensea, off the coasts of Holland, Germany, and Denmark, the bottom is uncovered during ordinary low tide. Observations and measurements of ripple marks in both mud and sand, correlated with observations of environmental factors such as wind, waves, and currents, indicate that ripple marks in mud generally are symmetrical and are formed with their crests parallel to the direction of movement of currents. Normal, asymmetrical current ripples in sand patches are formed with their crests perpendicular to the crests of the symmetrical ripple marks in the surrounding mud. In addition to these transverse ripple marks, longitudinal ripple marks also are formed in sand, in some places in combination with the transverse marks. It is suggested that fossilized longitudinal ripple marks may be used as an indication of extremely shallow water in which currents of long duration acted in a constant direction. Moreover, they may provide indications of the orientation of nearby banks or shores.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
