Named for Romana Mesa, north side of Lake Powell, as the upper formation of San Rafael Group in Kaiparowits basin, Kane Co, UT, Plateau sedimentary province. Type section 44.2 m thick measured and described on northeast side of Crosby Canyon, SE1/4 NE1/4 SE1/4 sec 8, T43S, R4E. Previously referred to as gray sandstone unit and as sandstone at Romana Mesa. Is a very fine- to fine-grained, moderately to well-sorted, flat-bedded and cross-bedded, gray sandstone. Can be as much as 4.6 m thick. Contains scattered coarse and very coarse grains at or near base. These grains are valuable in distinguishing Romana from Entrada which usually lacks coarse constituents. Small chert pebbles concentrated along some of bedding planes. Flat-bedded red mudstone or silty sandstone, called the red band, is a convenient basal marker locally. Is limited to Kaiparowits basin and Plateau sedimentary province, northernmost Coconino Co, AZ. Overlies Entrada Sandstone; underlies Tidwell (new) or Salt Wash Members of Morrison unconformably. Correlates [chart] with Summerville Formation. Deposited in or along margin of a narrow seaway. Interpreted as a southern or southwestern facies of the Summerville. Cross-beds of eolian strata dip east.

Source: GNU records (USGS DDS-6; Denver GNULEX).