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DOWNCURRENT DECLINE OF GRAIN SIZE AND THICKNESS OF SINGLE TURBIDITE BEDS: A SEMI‐QUANTITATIVE ANALYSIS
Author(s) -
SCHEIDEGGER A. E.,
POTTER PAUL EDWIN
Publication year - 1971
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1971.tb01129.x
Subject(s) - turbidite , geology , grain size , deposition (geology) , turbidity current , suspension (topology) , turbulence , geomorphology , current (fluid) , turbidity , geotechnical engineering , mineralogy , sediment , mechanics , oceanography , mathematics , sedimentary depositional environment , physics , structural basin , homotopy , pure mathematics
Sedimentologists have noted that turbidite sequences become thinner bedded and finer grained as traced downcurrent. We provide a semi‐quantitative explanation of this behavior based on the idea that turbulence in a turbidity current decays downcurrent so that in its zone of deposition both the total load in suspension and the grain size of that load decrease with increasing distance from the source. Semi‐empirical equations proposed by Chézy, Lokhtin and Sundborg are central to our argument.