Abstract

The orientations of quartz grains in 44 beds of the Normanskill Formation of the Hudson Valley of New York deviate significantly from the orientations of sole markings of the beds. The grains in each of 85 percent of the beds show a preferred orientation at the 90 percent significance level. Eighty percent of measured imbrications have an upstream orientation. Deviations of grain orientation from sole markings show no relationship to height above base of the beds. Maximum grain size decreases and maximum elongation increases in relation to height above base of the beds.

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