Skip to Main Content
Book Chapter

Experiments on Ripple Lamination1

By
Edwin D. Mckee
Edwin D. Mckee
Search for other works by this author on:
Published:
January 01, 1965

Abstract

Laboratory experiments have demonstrated that an essential factor in forming appreciable deposits of ripple–laminated sand is the introduction of an abundance of sediment into an area of ripple movement. A sequence of ripple laminae developed under such conditions changes both laterally and vertically as the result of changing stream regime during the time of deposition. Ripple laminae formed from stream currents show few or no important differences from those developed by waves with a forward component, but both types show many variations in size and shape of ripple profiles, caused by differences in water depth, wave or current strength, and other factors. Both stream currents and waves may develop either symmetrical or asymmetrical ripple marks.

Recognition of ripple lamination in ancient rocks is believed important as an aid in interpreting the environment of deposition. Ripple lamination is especially characteristic of areas, like river flood plains, where a great abundance of sand is introduced and deposited quickly. It is not necessarily developed wherever ripple marks are being formed, however, for in many such places the necessary excess of sand may be lacking and a constant reworking of sand results. At many places ripple lamination in ancient rocks is not readily apparent because sections cut at angles not parallel to current or wave direction may not have distinctive structure patterns; also, many sandstones that appear massive have been shown by selective etching or by X–ray studies to contain ripple lamination structure.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

SEPM Special Publication

Primary Sedimentary Structures and Their Hydrodynamic Interpretation

Gerard V. Middleton
Gerard V. Middleton
McMaster Ulliversity
Search for other works by this author on:
SEPM Society for Sedimentary Geology
Volume
12
ISBN electronic:
9781565761421
Publication date:
January 01, 1965

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now