[1] It was deposited in a nearshore environment, unconformably overlying Precambrian basement, and underlying the Eau Claire Formation in Wisconsin.
First, the lower Mount Simon is composed of a medium to coarse gained sandstone, which is interpreted to have a diagenesis of a high-energy river system.
[3] The middle Mount Simon is a fine to medium grained sandstone with shale beds in it, which is interpreted to be in a high-energy delta.
This layer is interpreted to be deposited in a medial braid plain and the conglomerate is a result of fluctuations in the energy of the river.
Apatite, amphibole, pyroxene, epidote, diaspore, staurolite, and anatase are all minerals that occur in the sandstone; however, they are not abundant and only take up a small percent of the grains in the rock.