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PERMFILE60587
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PERMFILE60587
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Last modified
8/24/2016 11:07:25 PM
Creation date
11/20/2007 6:45:51 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1997086
IBM Index Class Name
Permit File
Doc Date
2/3/1998
Doc Name
OWL CANYON CULTURAL RESOURCE RECONNAISSANCE & PRELIMINARY ENVIRONMENTAL ASSESSMENT REPORT
Media Type
D
Archive
No
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<br />OWL CANYON CULTURAL RF,SOURCE/ENI?RONMFXfAL RECONNAISSANCE <br />Geological Setting <br />The geological setting of the proposed mining area is dominate8 by a <br />canyon tributary of Peck Creek which was formed, and or deepened, by an <br />un-recorded transverse fault (NNE Strike; 90° Dip) between the recorded <br />Rock and Red Creek fault zones. Much slick-n-slide metamorphosed <br />contacu are visible on the north rim (up-thrown block). A dark reddish <br />brown patina of Magnesium Oxide covers most vertical surfaces where <br />contact metamorphism is not present. <br />The predominate country rock is composed of the South Platte <br />Member (Lower Cretaceous) of the Dakota Sandstone Group and is <br />characterized as being ayellowish-brown cross bedded fine-grained <br />sandstone -33 meters thick underlain by clay, claystone, end grayish <br />lenticular channel sandstones. Interference ripple marks are visible in <br />many locations and is typical of this formation in other foothills settings. <br />Evidence of the great influence this scientifically un-recorded <br />transverse fault had on the formation of this part of the canyon can be <br />seen in the lack ofmid-winter up-stream 8c down-stream surface water <br />flows and the lack of vertical canyon walls, whereas, in mid~anyon <br />vertical hard rock exposures (- ]0 meter;), large deep pools, and flowing <br />water are the norm. A stream flow of -2 CFM was observed during field <br />work on this date and reported by the land-owners as being normal mid- <br />canyon water flow during the winter months (see Photo # 1). <br />In the effected area the transverse fault has formed a canyon deep <br />enough to pool water from the surrounding water table; providing for a <br />year-round water source. Due to the near vertical walls of this canyon <br />aerial photography corrected USGS Quad maps do not represent the <br />topographic relief very well in this part of the effected area (see photo # 1). <br />This photograph, our staffs field observations, and a close look at the <br />USGS Quadrangle map showing the location of the proposed mining area <br />clearly illustrates this mapping discrepancy. <br />SOUS <br />The soils in area A (see attachment # 1) are predominately composed <br />of a thin (within 15 meters of the effected canyon rim) to thick (Five, or <br />more, meters near the junction of Red Creek 8c Siloam Roads) layer of <br />Nunn Series clay loam. This colluvial deposited soil forms on upland <br />areas (0-9% slopes) in Western Pueblo County and is composed of the <br />
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