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Pebble segregation and bed lenticularity in wave‐worked versus alluvial gravel *
Author(s) -
CLIFTON H. EDWARD
Publication year - 1973
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.1365-3091.1973.tb02043.x
Subject(s) - pebble , geology , alluvium , fluvial , bedding , geomorphology , quaternary , geochemistry , paleontology , structural basin , horticulture , biology
Two aspects of bedding may permit visual discrimination between wave‐worked and alluvial gravel. Pebbles in gravel worked by waves tend to be better segregated into discrete beds than those in alluvial deposits, and bedding in wave‐worked gravel tends to be more laterally regular, or less lenticular, than that in stream gravel. Pebble segregation and lenticularity were quantitatively analysed in twenty‐five different marine and fluvial deposits of Quaternary or Tertiary age in southwestern Oregon in order to evaluate their use as environmental indicators. The results indicate that these two factors combined provide a visual criterion for discriminating between many gravels of wave‐worked and alluvial origin.