Laserfiche WebLink
4.3 ORAL DESCRIPTION OF GEOIAGY AND HYDROLOGY (2.04.5 <br />4.3.1 General C~ology <br />The Trinidad Basin Mine, as stated above, is located west <br />of Ludlow in Del Agua Canyon. The coal to be mined is located <br />in the Trinidad Coal Field. This field, according to Johnson <br />(1961), is comprised of approximately 1,100 square miles in Huerfano <br />and Las Animas aunties. The ~ar;es of this field are as <br />follows: Southern: Colorado-New Mexico BoundaLy; Northern: <br />Huerfano River (northern extent is just short of this landmark); <br />4~stErn: eastern front of Sangre de Cristo's; and Eastern: <br />longitude 104° 30' west. As stated by Johnson (1961); "gal occurs <br />in rec7cs limited to the structural trough of the Paton Hasin", <br />and the Basin can be identified as the principal. structural feature <br />• of the field. Figure IV-1 is a general stratigraphic section of <br />the Del Agua Canyon area within this field. <br />The most noteable geological feature within the general <br />locality of the mine is the Spanish Peaks. These peaks resulted <br />from the doming of igneous rocks after formation of the faulted <br />anticlines of the Rockies. Both of these peaks are highly visible <br />to the west of the mine site. <br />Associated with the Spanish Peaks are the many dikes <br />that radiate outward frrnn them. A large dike, the Apishapa Craig, <br />can be seen as the large ridge east of mile marker 30. Another <br />visible expression, but different geologic structure is the Black <br />Hills located between Aguilar and Trinidad on the eastern plains. <br />Ln this situation, the intrusive material has been transmitted through <br />horizontal cracks in the rock (known as a sill) and affords pro- <br />IV-10 <br />