Geologic map of the Dillon quadrangle, Summit and Grand Counties, Colorado

Online link https://geo-nsdi.er.usgs.gov/metadata/map-mf/2390/metadata.faq.html
Description New 1:24,000-scale geologic mapping along the Interstate-70 urban corridor in western Colorado, in support of the USGS Central Region State/USGS Cooperative Geologic Mapping Project, is contributing to a more complete understanding of the stratigraphy, st
Originators Kellogg, Karl S.
Publication U.S. Geological Survey Miscellaneous Field Studies Map MF-2390

Related topics

States or counties

Overview of attributes

>---------------------------------------------------------------
>COVERAGE NAME: dillonpoly
>---------------------------------------------------------------
>
>USER-DEFINED ITEMS IN DILLONPOLY.PAT:
>------------------------------------
>
>ATTRIBUTE NAME: DESCRIPTION
>DATABASE ITEM STRUCTURE: 80,80,C,0
>DESCRIPTION: Short textual description of the map unit. Complete
>  descriptions of the map units are normally provided in an accompanying
>  report. This description is typically shown on the legend printed on the
>  map sheet.
>ATTRIBUTE NAME: LABEL
>DATABASE ITEM STRUCTURE: 6,6,C,0
>DESCRIPTION: Map unit label.
>
>ATTRIBUTE NAME: SYMBOL
>DATABASE ITEM STRUCTURE: 4,4,I,0
>DESCRIPTION: Integer index of the proper color for this polygon.  The index
>  indicates which element of the shade set color524.shd is used.
>
>CORRELATION OF ITEMS SYMBOL, LABEL, AND DESCRIPTION IN DILLONPOLY.PAT:
>
>SYMBOL   LABEL  DESCRIPTION
>0               water
>2        Qal    alluvium
>12       Qcl    colluvium and loess, undivided
>16       Qls    younger landslide deposits
>23       Qg     terrace gravel
>25       Qac    alluvium and colluvium, undivided
>26       Qt     talus
>29       Xdi    diorite and quartz diorite
>32       Qf     fan deposits
>35       Qop    Pinedale outwash gravel
>35       Qop?   Pinedale outwash gravel, uncertain
>64       Xgr    granodiorite and quartz monzonite
>75       Xbg    biotite gneiss
>88       YXggp  granitic rocks, biotite gneiss, and pegmatite
>98       QTgm   gravel of Mesa Cortina
>102      Xsg    biotite-muscovite-sillimanite gneiss and schist
>112      Qtb    Bull Lake till
>115      Qtp    Pinedale till
>150      YXpg   pegmatite and granite complex
>156      YXp    pegmatite
>222      Xqz    quartzite
>334      Xam    amphibolite
>367      Kpm    Pierre Shale, shale and sandstone member
>371      Kb     Benton Shale
>411      Kps    Pierre Shale, sandstone member
>416      Kp     Pierre Shale, undivided
>417      Kpl    Pierre Shale, lower shale member
>427      Jm     Morrison Formation
>440      Kn     Niobrara Formation
>444      QTd    diamicton
>449      QTls   older landslide deposits
>454      Kd     Dakota Sandstone
>455      Qgo    older outwash gravel
>456      Qr     rock-glacier deposits
>468      Xkbg   microcline-biotite gneiss
>496      Qdf    debris-flow deposit
>504      Xbmg   biotite-muscovite gneiss and schist
>514      af     artificial fill
>520      Xmg    migmatite
>
>USER-DEFINED ITEMS IN DILLONPOLY.AAT:
>------------------------------------
>
>ATTRIBUTE NAME: DESCRIPTION
>DATABASE ITEM STRUCTURE: 80,80,C,0
>DESCRIPTION: Text indicating the type of linear geologic feature.
>
>ATTRIBUTE NAME: SYMBOL
>DATABASE ITEM STRUCTURE: 3,3,I,0
>DESCRIPTION: Integer index of the line type used for plotting the feature
>  on the map.  The symbol set used to plot these features is geol_sfo.lin.
>
>CORRELATION OF ITEMS SYMBOL AND DESCRIPTION IN DILLONPOLY.AAT:
>
>SYMBOL   DESCRIPTION
>0        water boundary
>1        contact
>2        contact, approximately located
>4        contact, concealed
>14       thrust fault
>20       thrust fault, approximately located
>24       thrust fault, concealed
>50       normal fault
>173      map boundary
>176      fault, concealed
>176      normal fault, concealed
>183      normal fault, approximately located
>184      normal fault, concealed
>216      fault, approximately located
>227      fault
>
>---------------------------------------------------------------
>COVERAGE NAME: dillonline
>---------------------------------------------------------------
>
>USER-DEFINED ITEMS IN DILLONLINE.AAT:
>------------------------------------
>
>ATTRIBUTE NAME: DESCRIPTION
>DATABASE ITEM STRUCTURE: 80,80,C,0
>DESCRIPTION: Text indicating the type of linear geologic feature.
>
>ATTRIBUTE NAME: SYMBOL
>DATABASE ITEM STRUCTURE: 3,3,I,0
>DESCRIPTION: Integer index of the line type used for plotting the feature
>  on the map.  The line type is given by the symbol set (whose
>  name is specified in an accompanying attribute) and this
>  index value.
>
>ATTRIBUTE NAME: SYMSET
>DATABASE ITEM STRUCTURE: 20,20,C,0
>DESCRIPTION: Name of the symbol set containing the appropriate line
>  style to be used for plotting this feature.  Text.
>
>CORRELATION OF ITEMS SYMBOL, SYMSET, AND DESCRIPTION IN DILLONLINE.AAT:
>
>SYMBOL  SYMSET         DESCRIPTION
>11      geoscamp1.lin  scarp
>15      geoscamp1.lin  sackung structure
>60      geol_sfo.lin   anticline
>63      geol_sfo.lin   anticline, concealed
>92      geol_sfo.lin   plunging syncline
>92      geol_sfo.lin   syncline
>95      geol_sfo.lin   plunging syncline, concealed
>95      geol_sfo.lin   syncline, concealed
>173     geol_sfo.lin   cross-section line A-A'
>173     geol_sfo.lin   cross-section line B-B'
>
>---------------------------------------------------------------
>COVERAGE NAME: dillonpoint
>---------------------------------------------------------------
>
>USER-DEFINED ITEMS IN DILLONPOINT.PAT:
>------------------------------------
>
>ATTRIBUTE NAME: DESCRIPTION
>DATABASE ITEM STRUCTURE: 80,80,C,0
>DESCRIPTION: Text indicating the type of geologic point feature.
>
>ATTRIBUTE NAME: AZIMUTH
>DATABASE ITEM STRUCTURE: 7,7,I,0
>DESCRIPTION: Integer value in the range 0-359 indicating rotation of the
>  point feature in the horizontal plane. In the case of bedding or jointing,
>  this value indicates the strike.
>
>ATTRIBUTE NAME: INCLINATION
>DATABASE ITEM STRUCTURE: 5,5,I,0
>DESCRIPTION: Integer value in the range 0-90 indicating the inclination from
>  horizontal of the point feature. In the case of bedding or jointing,
>  this value indicates the dip.
>
>ATTRIBUTE NAME: SYMBOL
>DATABASE ITEM STRUCTURE: 3,3,I,0
>DESCRIPTION: Integer index of the point type used for plotting the feature
>  on the map.  The point type is given by the symbol set (whose
>  name is specified in an accompanying attribute) and this
>  index value.
>
>ATTRIBUTE NAME: SYMSET
>DATABASE ITEM STRUCTURE: 20,20,C,0
>DESCRIPTION: Name of the symbol set containing the appropriate symbol
>  to be used for plotting this feature.  Text.
>
>CORRELATION OF ITEMS SYMBOL, SYMSET, AND DESCRIPTION IN DILLONPOINT.PAT:
>
>SYMBOL  SYMSET          DESCRIPTION
>2       geoscamp2.mrk   strike and dip of inclined beds
>53      plotter.mrk     sample locality for zircon age dating
>81      geoscamp2.mrk   strike and dip of foliation
>82      geoscamp2.mrk   vertical foliation
>122     usgs.mrk        gravel pit
>130     geoscamp2.mrk   bearing and plunge of lineation

http://pubs.usgs.gov/mf/2002/mf-2390/downloads/mf-2390pam508.pdf