The Salt Wash Member of the Upper Jurassic Morrison Formation in the Henry Mountain region of southern Utah is up to 160 m thick and consists of sandstones, interpreted as fluvial-channel deposits, and mudrocks, interpreted as overbank or abandoned channel-fill deposits. The strata are interpreted to have been deposited by a braided river system based on the high sandstone:mudrock ratio, the paucity of ripple lamination in the upper part of fining-upward units, the coarse grain size of many of the sandstones, a lack of lateral accretion bedding, the sheetlike nature of the sandstone bodies and the low dispersion of...