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2.04.5 <br />INTRODUCTION <br />The proposed Carbon Junction Mine is located in portions of Sections <br />33, T34zN, R9W and Section 33, T35N, R9W, N.M.P.M., La Plata County, <br />Colorado. The permit area consists of approximately 270 acres. It is pro- <br />posed that coal will be extracted by surface mining. <br />SCOPE <br />This report presents the resplts of a geological investigation of <br />the proposed Carbon Junction Mine. The report was written in accordance <br />with requirements of ReRUlations of the Colorado Mined Land Reclamation <br />Board for Coal Mininr~, Rule 2.04.5. The investigation included afield <br />examination and a review of the available geological literature. A topo- <br />graphic base of the permit area was provided by Pueblo Coal, Inc. A high <br />• degree of accuracy was assumed. <br />GEOLOGY <br />The area of investigation lies on the eroded surface of sedimentary <br />rocks of Cretaceous age. Drainages are filled by colluvial material derived <br />from the underlying bedrock. The surface is covered by a thin soil mantle <br />of both fine sandy aeolian material and soils derived from bedrock. <br />The youngest fromation exposed within the area of investigation is the <br />Fruitland Formation of Upper Cretaceous age. The formation is composed of <br />irregulary bedded and discontinuous nonmarine sandstone, shale and coal <br />beds. The formation is gray to brown and black with greenish shale and gray- <br />green fine grained dense feldspathic sandstone in the upper part. Three <br />coal zones are known. Locally the Fruitland Formation intertongues with the <br />underlying Pictured Cliffs Sandstone. <br />The Pictured Cliffs Sandstone is composed of light-gray, well sorted, <br />(1) <br />