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Interim Geologic Map of the Shearing Corral

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Interim Geologic Map of the Shearing Corral Plate 1 UTAH GEOLOGICAL SURVEY Utah GeologicalOpen Survey-File ROpen-Fileeport 56 Report5 565 a division of Interim Geologic Map Iofn ttheeri mShearing Geolo Corralgic M Quadrangle,ap of the Utah Department of Natural Resources Morgan, Rich, and Summit Counties, Utah Shearing Corral Quadrangle Qac Tw Qac Qac Tw 1 4 Qac Qac lm2? Tw Qac Qac Tw Tw Qac Qms lm1? Qac Qac 2 lm2 Tw lm1? Qac 2 Champlin 388 Amoco C1 Qms Qmc location approximate 2 Qmc 1 1 Tw Tw Tw 7 lm2 Tw lm1? Tw 1 1 Qac Qms Qc lm2 Tw 1 Qac lm2 1 Qac Qac Qac 5 Tw Qmc Qmc Tw Tw Qac Qmc Qmc Qc Qac Qac Qac Qmc Qmc 4 Tw lm2 lm1 Qac Qac Qac lm1? 3 Qh lm2 Tw Tw lm1 1 Qmc Tw Qmc Qac Qac Qmc Qh Qac lm1? Qmc Qmc 6 Tw lm2 2 Qmc Qmc Qmc Qac Tw Tw lm2 2 lm2 Tw 2 3 Qac Qac 8 Tw Tw Qac Tw 1 Qms Tw Qms Qmc Qmc Qac Qmc Tw Tw Qac lm2 Qmc Tw Qac Tw Qmc Tw Qac Tw Qmc lm2 Qac Qac Qh Tw Qal Qac Champlin 388 Amoco A1 location approximate Qac Qh Tw Qac Qac Tw Qac Qmc Qac Qh Tw Tw Qmc 2 Qac Qac Qac 1 Tw Qac Qal lm2? Qac Qmc Qac Qac Qmc Qac 1 1 Qac <0.5 Qmc 2 4 Qmc Qmc Qmc 3 Qmc Tw 3 Tw Champlin 392 Amoco A Tw 2 location approximate Qac Qmc Qh Qac 1 Tw Qmc Qac 2 Qac Qmc 1 4 Qmc Qc Qac Qmc Tw 3 3 Qac Qac Qc Qc Qc Qac Tw Tw Tw 6 Qmc Qmc 3 2 1 Qc 2 Qmc Qac Qmc 7 Qac Qmc Qmc Tw Qac Qc Qac Qac 4 Qac 5 Qc Tw Tw Qmc Tw Qmc Qmc Qmc 3 Qmc Tw Qac Tw Qmc 2 Qac Qac Qac Tw Qmc Qmc 3 lm2? Qac Qac Qms Qmc Qac Tw Qmc 4 Tw Qac Tw Tw Qmc 5 Qmc Qmc Tw Qac Qac Tw Qmc lm2? 3 3 Tw Qmc Tw Tw Qmc Tw Qac Qac Qmc Qac Qmc Qmc Qmc Qac Tw Qmc 4 Qac Qmc Qmc Tw Tw Qmc Qmc Qmc Qac Qc Qmc Qmc Qmc Qmc Qmc Qmc Qmc Tw Qmc Qac Tw Qmc Qmc Qc Tw Qac Qac Tw 2 Qmc Qc Champlin 476 Amoco A1 Tw Qmc Qac location approximate Qmc Tw Tw Qac Qmc 6 Qmc Qmc Qh Qac 2 3 Tw 1 Qmc Qac 5 1 Tw Tw Tw Qac Tw Tw Qac 1 ? Qac 2 Qmc Qac Tw 1 Tw Tw Qmc Qh Tw Qac Qac Tw Tw Tw Qac Tw Tw Qmc Qmc Qmc This open-file release makes information available to the public that may not conform to UGS technical, editorial, or policy standards; this should be considered by an Thisindi vopen-fileidual or releasegroup pmakeslannin informationg to take ac availabletion base tod othen t publiche con thattent smay of tnothis conformreport. to UGSAlth otechnical,ugh this peditorial,roduct r eorp rpolicyesents standards; the work thisof p shouldrofess ibeon aconsideredl scientist sby, t hane Uindividualtah orD egrouppartm planningent of N atotu takeral R actionesour basedces, U ontah the G econtentsologica lof S uthisrve report.y, mak Althoughes no wa rthisran ty, productexpress representsed or imp ltheied ,work rega ofrd iprofessionalng its suitab scientists,ility for a thepa rUtahticul aDepartmentr use. The Uoft aNaturalh Resources,Departmen Utaht of NGeologicalatural Re sSurvey,ources ,makes Utah Gnoe owarranty,logical S expressedurvey, sh aorll implied,not be l iregardingable itsun suitabilityder any ci rforcu ma particularstances fo use.r an They di rUtahect, iDepartmentndirect, spe ofci aNaturall, incid eResources,ntal, or co Utahnseq uential Geologicaldamages w Survey,ith resp shallect t onot cl abeim liables by uundersers oanyf th circumstancesis product. for any direct, indirect, special, incidental, or consequential damages with respect to claims by users of this product.This geologic map was funded by the Utah Geological Survey and the U.S. Geological Survey, National Cooperative Geologic Mapping Program through ThisU.S. geologicGeologi mapcal S wasurv efundedy STA byTE theMA UtahP aw Geologicalard numbe Surveyrs 96H QandA Gthe15 U.S.21, Geological Survey, 97HQA NationalG1797, Cooperativeand 98HQA GeologicG2067. MappingThe view Programs and co throughnclusio nU.S.s co nGeologicaltained in this Surveydocum eSTATEMAPnt are those award of the numbers authors 96HQAG1521,and should not 97HQAG1797,be interpreted andas n 98HQAG2067.ecessarily INTERIM GEOLOGIC MAP OF THE SHEARING CORRAL Therepr viewsesenti nandg t hconclusionse official p containedolicies, ei inth ethisr ex documentpressed o arer im thoseplied of, o thef th authore U.S. andGo vshouldernme nt. not be interpreted as necessarily representing official policies, either expressed or QUADRANGLE, MORGAN, RICH AND SUMMIT COUNTIES, UTAH implied, of the U.S. Government. by Jon K. King 2010 INTERIM GEOLOGIC MAP OF THE SHEARING CORRAL QUADRANGLE, MORGAN, RICH, AND SUMMIT COUNTIES, UTAH by Jon K. King Disclaimer This open-file release makes information available to the public that may not conform to UGS technical, editorial, or policy standards; this should be considered by an individual or group planning to take action based on the contents of this report. Although this product represents the work of professional scientists, the Utah Department of Natural Resources, Utah Geological Survey, makes no warranty, expressed or implied, regarding its suitability for a particular use. The Utah Department of Natural Resources, Utah Geological Survey, shall not be liable under any circumstances for any direct, indirect, special, incidental, or consequential damages with respect to claims by users of this product. This geologic map was funded by the Utah Geological Survey and U.S. Geological Survey, National Cooperative Geologic Mapping Program, through USGS STATEMAP award number 96HQAG01521, 97HQAG01797, and 98HQAG2067. The views and conclusions contained in this document are those of the author and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. OPEN-FILE REPORT 565 UTAH GEOLOGICAL SURVEY a division of Utah Department of Natural Resources 2010 SUMMARY This map and report are part of work by the Utah Geological Survey to geologically map the Ogden 30- x 60-minute quadrangle. This open-file report was made to provide detail that can not be shown at the smaller scale of a 30- x 60-minute map (see Coogan and King, 2001) and because no detailed geologic mapping of the entire Shearing Corral quadrangle was available. Previous relatively detailed mapping of the southern fringe of the quadrangle was by Madsen (1959) for a graduate thesis at the University of Utah, but his map has a planimetric base and covers only a few square miles of the quadrangle. The Shearing Corral quadrangle is located northeast of Salt Lake City, Utah and west of Evanston, Wyoming, near the Utah-Wyoming border, in the Bear River drainage in Rich County, Utah and Weber River drainage in Morgan and Summit Counties, Utah (figure 1). The major geographic feature in the quadrangle is upper Echo Canyon in the southeast portion of the map area. Echo Canyon and nearby lands are major railroad and interstate highway transportation corridors. Geologically the map area is in the Cretaceous to Eocene “overthrust” belt of Utah, Idaho, and Wyoming (Coogan, 1992a, b; Royse, 1993), part of the Cordilleran fold-and-thrust belt of North America. In the Shearing Corral quadrangle, this complex geology, though exposed to the west and east (see Coogan and King, 2001), is obscured by a “sea” of younger rocks, the Wasatch Formation. The Eocene and uppermost Paleocene Wasatch Formation is the only bedrock exposed in the quadrangle. The Crawford thrust fault is present to the west beneath the Cretaceous Evanston Formation in the Francis Canyon and Lost Creek Dam quadrangles (Coogan, 2004a, b), and the older Willard thrust sheet is present farther to the west, also beneath extensive Wasatch Formation cover (Yonkee and others, 1997; Coogan, 2004a, 2006a, b). A roughly north-south-trending, broad syncline in the Wasatch Formation in this and adjacent quadrangles is likely due to emplacement of the Hogsback thrust, with a leading edge to the east in Wyoming (see Yonkee and others, 1997). The syncline may have developed syndepositionally with the Wasatch Formation because carbonate-rich beds in the Wasatch are most noticeable near the fold trace and imply a lacustrine setting; see Coogan (1992a) for a similar setting to the north on the Crawford thrust sheet near Bear Lake. Though no faults are mapped in this quadrangle, Quaternary normal fault scarps are present to the northwest along Saleratus Creek (see Coogan and King, 2001; Coogan, 2004b) in a fault zone previously mapped by Lamerson (1982, plate 1B). This normal faulting is due to post-thrust Cenozoic extension, in particular Miocene and younger Basin-and-Range extension, and may sole into the Crawford thrust fault (see for example West, 1993, 1994); some normal fault offset might be due to Oligocene relaxation (collapse) of the Cordilleran fold-and-thrust belt (see Constenius, 1996). Interpretations of subsurface geology in the quadrangle have been made by Lamerson (1982, plate 11), and Yonkee and others (1997, figure 28, cross-section A-A’). Note that the Champlin 392-Amoco A well in this quadrangle (plate) is shown on both cross sections (as Amoco #1-392A and 392A). Another cross section with a slightly different subsurface 1 interpretation was constructed by Coogan (1992a, plate 2, cross-section a-a’) to the north across the adjacent McKay Hollow quadrangle. Though mostly showing the subsurface geology to the northeast in the Murphy Ridge quadrangle, Lamerson (1982, plate 4) also used the Amoco 1-391 Champlin well (Champlin 391-Amoco A in syntax of this report) that Coogan (1992a, ) did.
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