Laserfiche WebLink
<br /> <br /> <br />1 <br />I <br /> <br />EXHIBIT D (Cont'd) <br />motorcycle facility operated by the City of Lakewood is <br />located in the northeast part of the property. Approximately <br />25.8 acres of this facility are within the area of the <br />affected land. <br />Geologic Setting. The affected land is located on the <br />far west side of the Denver-Julesburg Basin, approximately <br />two miles north-northeast of the Town of Morrison. At this <br />location the sedimentary beds of Cretaceous age are dipping <br />steeply (between 70o and 80°) to the east. Clay and silica <br />are produced from the Laramie Formation (Upper Cretaceous Age). <br />Generally, the Laramie Formation is divided into two parts. <br />The Upper Laramie is described in USGS Map I-790-A as being <br />'7ight$ray micaceous siltstone stained yellowish orange, light-, <br />olive-, and pinkish-gray silty claystone, grayish-brown lignitic <br />claystone, minor white and yellowish-orange friable ridge- <br />forming sandstone, and near the top are thin layers of con- <br />glomerate composed of pebbles of sedimentary rocks. Sand grains <br />are quartz and chert. Yellowish-orange sandy ironstone con- <br />cretions." The lower part of the Laramie Formation is described <br />as "almost entirely yellowish-gray iron-stained and white 'salt- <br />and-pepper' friable sandstone composed of quartz, biotrite mica, and <br />kaolinized feldspar. Sandstone 110 feet thick at base is con- <br />sidered Fox Hills Sandstone by one authority. Gray sandstone <br />contains gray shale chips. Contains thin ironstone layers and <br />shale layers near base. Subbituminous coal beds as thick as <br />8 feet lie in lower 200 feet above basal sandstone. Gray or white <br />claystone in beds more than 10 feet thick is used for manufacture <br />-8- <br />