Online link | https://geo-nsdi.er.usgs.gov/metadata/open-file/01-226/metadata.faq.html |
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Description | This digital map database, compiled from new mapping by the authors, represents the general distribution of bedrock and surficial deposits of the Dixonville 7.5 minute quadrangle along the southeastern margin of the Oregon Coast Range and its tectonic bou |
Originators | Jayko, Angela S. and Wells, Ray E. |
Publication | U.S. Geological Survey Open-File Report Open File Report 01-226 |
The ARC/INFO version of the Digital Geologic Map of the Cougar Buttes 7.5'quadrangle consists of five coverages: 1) coug_geo - geology Geologic units are delineated by geologic line entities and described by polygons which are attributed with the following set of attribute items in coug_geo.pat. For display purposes, the geology coverage contains three annotation subclasses: anno.geo contains unit labels, anno.fault contains formal fault names, and anno.twn_rnge contains township and range data. > >COUG_GEO.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 COUG_GEO# 4 5 B - > 21 COUG_GEO-ID 4 5 B - > 25 LABL 35 35 C - > 60 PLABL 35 35 C - > 95 TAG 25 25 C - > 120 SHDPS 3 3 I - > 123 NAME 254 254 C - > 377 SHDFIL 3 3 I - > LABL geologic map unit label, in plain text Alphabetized list of map units symbols (LABL) and the corresponding map unit names (NAME) specified in the Cougar Buttes geologic map database (coug_geo.pat): > >Jg Granite >Jp Porphyritic quartz monzonite, monzogranite, > and granodiorite >Kcb Monzogranite of Cougar Buttes >Kgd Granodiorite >Kmi Mafic-rich intermediate rocks >Kmp Mixed plutonic rocks >Kp Porphyritic monzogranite >MzPrgg Granitic orthogneiss >Prgn Gneiss >QTbrbc Breccia, strata of Blackhawk Canyon >QTbrc Breccia, carbonate rocks >QTbrg Breccia, granitic rocks >QTc Conglomerate of Cushenbury Spring >QTs1 Sandstone and conglomerate, member 1 >QTs2 Sandstone and conglomerate, member 2 >QTspcb Saprolite, monzogranite of Cougar Buttes >QTspmp Saprolite, mixed plutonic rocks >Qmof Moderately old alluvial fan deposits >Qmof? Moderately old alluvial fan deposits? >Qmol Moderately old lacustrine deposits >Qmol? Moderately old lacustrine deposits? >Qmolsbc Moderately old landslide breccia, > strata of Blackhawk Canyon >Qmolsc Moderately old landslide breccia, > carbonate rocks >Qmolscc Moderately old landslide breccia, > conglomerate of Cushenbury Springs >Qmos Moderately old slope wash and alluvial > deposits >Qoc Old colluvial deposits >Qoc? Old colluvial deposits? >Qoc1 Old colluvial deposits, unit 1 >Qoc2 Old colluvial deposits, unit 2 >Qof Old alluvial fan deposits >Qof? Old alluvial fan deposits? >Qolsbc Old landslide breccia, strata of Blackhawk > Canyon >Qolsc Old landslide breccia, carbonate-rock >Qolsg Old landslide breccia, granitic rocks >Qp Active playa deposits >Qvodf Very old debris flow fan deposits >Qvof1 Very old alluvial fan deposits, unit 1 >Qvof2 Very old alluvial fan deposits, unit 2 >Qvos Very old slope wash and alluvial deposits >Qvos? Very old slope wash and alluvial deposits? >Qw Active wash deposits >Qya Young axial valley deposits >Qyas+Qye Young alluvial and slope wash deposits + > Quaternary young eolian deposits >Qydf Young debris flow fan deposits >Qye Young eolian deposits >Qye? Young eolian deposits? >Qyf Young alluvial fan deposits >Qyf1 Young alluvial fan deposits, unit 1 >Qyf2 Young alluvial fan deposits, unit 2 >Qyf3 Young alluvial fan deposits, unit 3 >Qyf4 Young alluvial fan deposits, unit 4 >Qyfe Young alluvial fan and eolian deposits >Qyfe? Young alluvial fan and eolian deposits? >Qyfs Young alluvial fan sand deposits >Qyfw1 Young alluvial fan feeder wash deposits, > unit 1 >Qyfw2 Young alluvial fan feeder wash deposits, > unit 2 >Qyfw3 Young alluvial fan feeder wash deposits, > unit 3 >Qyfw4 Young alluvial fan feeder wash deposits, > unit 4 >Qyls Young landslide deposits >Qyos Young(?) and old slope wash and alluvial deposits >Qyoss1 Young(?) and old slope wash and alluvial deposits, > substrate 1 >Qyoss2 Young(?) and old slope wash and alluvial deposits, > substrate 2 >Qyoce Young and old colluvial and eolian deposits >Qyp Young playa deposits >Qyse Young slope wash, alluvial, and eolian deposits >Qyse? Young slope wash, alluvial, and eolian deposits? >Qysos1 Young slope wash and alluvial deposits, > oxidized, substrate 1 >Qysos2 Young slope wash and alluvial deposits, > oxidized, substrate 2 >Qysos2? Young slope wash and alluvial deposits, > oxidized, substrate 2? >Qysos3 Young slope wash and alluvial deposits, > oxidized, substrate 3 >Qysos3? Young slope wash and alluvial deposits, > oxidized, substrate 3? >Qyss Young slope wash and alluvial deposits, > sandstone substrate >Qysws1 Young slope wash and alluvial deposits, > white, substrate 1 >Qysws2 Young slope wash and alluvial deposits, > white, substrate 2 >Qyw Young wash deposits >Ta Arkosic sandstone >Ta? Arkosic sandstone? >Tb Basalt >Tl Lacustrine strata >Tl? Lacustrine strata? PLABL coded geologic map unit label used to generate plot labels with relevant stratigraphic symbols. The geologic units with LABL MzPrgg (Mesozoic or Proterozoic) and Prgn (Proterozoic) appear as }<gg, <gn respectively in the item PLABL. The replacement characters call their corresponding symbols from the Stratagem Font Group. Geologic map unit labels will plot on derivative map plots with appropriate stratigraphic symbols if PLABL is used as the source of unit labels. The Stratagem Font Group is accessed through geofont.txt, and is included in the data package. TAG enables identification of polygons, within a unit, of which the geology is sufficiently distinct from that of the overall unit. The default designation is the unit label with the suffix A. Polygons representing unique properties other than the default can be identified with suffixes B, C...etc. All polygons in the Cougar Buttes quadrangle are designated by the suffix A. SHDPS polygon color from shadeset scamp2.shd (included in the data package) NAME geologic name of each unit SHDFIL polygon fill pattern from shadeset geology2.shd (included in the data package) Geologic lines, which include features such as faults, contacts, and marker horizons are attributed with the following set of feature attribute items contained in coug_geo.aat. (A complete description of each line type is available in the data table, lines.rel.) > >COUG_GEO.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 COUG_GEO# 4 5 B - > 29 COUG_GEO-ID 4 5 B - > 33 L-TAG 25 25 C - > 58 L-SYMB 3 3 I - > 61 L-NAME 200 200 C - > > L-TAG line tag which consists of a character and numerical value, e.g. C17, allows the user to relate the line entity to its corresponding definition in lines.rel List of line types used in the Cougar Buttes geologic map coverage (coug _geo.aat), including abbreviated descriptions from lines.rel: >C17 Contact, landslide, location meets map accuracy standard >C18 Contact, landslide, location may not meet map accuracy > standard >C2 Contact, generic, location may not meet map accuracy > standard >C22 Contact, landslide, questionable, location may not meet map > accuracy standard >C23 Contact, landslide, questionable, covered, location may not > meet map accuracy standard >C30 Contact, sedimentary, location may not meet map accuracy > standard >C31 Contact, sedimentary, inferred, location may not meet map > accuracy standard >C32 Contact, sedimentary, covered, location may not meet map > accuracy standard >C42 Contact, sedimentary, gradational, location may not meet > map accuracy standard >C49 Contact, igneous, location meets map accuracy standard >C50 Contact, igneous, location may not meet map accuracy > standard >C65 Contact, metamorphic, location meets map accuracy standard >C66 Contact, metamorphic, location may not meet map accuracy > standard >C81 Contact, regolith, location meets map accuracy standard >C82 Contact, regolith, location may not meet map accuracy > standard >CL1 Cartographic line, map boundary >F14 Fault, high angle, strike slip, right lateral, inferred, > location may not meet map accuracy standard >F16 Fault, high angle, normal slip, location may not meet map > accuracy standard >F20 Fault, high angle, strike slip, right lateral, covered, > location may not meet map accuracy standard >F22 Fault, high angle, normal slip, covered, location may not > meet map accuracy standard >F31 Fault, high angle, slip unspecified, generic, inferred, > location may not meet map accuracy standard >F38 Fault, high angle, strike slip, right lateral, > questionable, location may not meet map accuracy standard >F8 Fault, high angle, strike slip, right lateral, location > may not meet map accuracy standard >F90 Fault, low angle, slip unspecified, older over younger, > location may not meet map accuracy standard >F98 Fault, low angle, normal slip, younger over older, > location may not meet map accuracy standard >MH1 Marker horizon, buried paleosol, location meets map > accuracy standard > L-SYMB calls up the appropriate line symbol from the lineset geoscamp2.lin (included in the data package) L-NAME formal name, where applicable, of geologic linear feature The Helendale Fault is the only formally named fault in the Cougar Buttes quadrangle. 2) coug_str - structural lines Geologic stuctural features in the Cougar Buttes quadrangle include upright anticlines and upright synclines. The attribute values, L-TAG and L-SYMB, link the line tag to the data table, lines.rel and call up the appropriate line symbol from the lineset geoscamp2.lin respectively. > >COUG_STR.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 COUG_STR# 4 5 B - > 29 COUG_STR-ID 4 5 B - > 33 L-TAG 25 25 C - > 58 L-SYMB 3 3 I - > > List of line types used in the Cougar Buttes structural map coverage (coug _str.aat), including abbreviated descriptions from lines.rel: >FA33 Fold axial trace, anticline, upright, location meets map > accuracy standard >FA97 Fold axial trace, syncline, upright, location meets map > accuracy standard > > 3) coug_pts - geological point data Geological point data includes information describing the types and the orientation of bedding, foliation, and lineations. One annotation subclass is included in the geologic points coverage: dip displays the respective dip and plunge values associated with individual point data. > >COUG_PTS.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 COUG_PTS# 4 5 B - > 21 COUG_PTS-ID 4 5 B - > 25 P-DIP 3 3 I - > 28 P-STRIKE 3 3 I - > 31 P-SYMB 3 3 I - > 34 P-TAG 25 25 C - > 59 P-PLUNGE 3 3 I - > 62 P-DIPDIR 3 3 I - > > P-DIP the dip of planar features P-STRIKE the azimuth strike of planar features P-SYMB calls the point-type from the markerset geoscamp2.mrk (included in the data package) P-TAG point tag which consists of a character(s) and numerical value, e.g. FN42, allows the user to relate the point entity to its corresponding definition in the data table, points.rel Point types (quantitative orientation data) in coug_pts.pat and their corresponding, abbreviated descriptions from points.rel: > >B2 Bedding attitude, sedimentary, inclined >FN42 Foliation attitude, metamorphic, inclined >L26 Lineation, metamorphic, minor fold axes, sinistral > rotation > P-PLUNGE lineation plunge value P-DIPDIR azimuthal direction of dip To date, there is no other way to indicate to the user the cardinal direction of dip using the traditional convention (traditional geologic notation allows a quadrant designation following the dip value). 4) coug_ptsorn - structural line ornamentation The point data included in coug_ptsorn allow a visual representation of the type of structural linear feature, e.g. anticline and syncline symbols. The items P-TAG and P-SYMB link the point tag to its full description in points.rel and call up the appropriate point symbol from geoscamp2.mrk. > >COUG_PTSORN.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 COUG_PTSORN# 4 5 B - > 21 COUG_PTSORN-ID 4 5 B - > 25 P-TAG 25 25 C - > 50 P-SYMB 3 3 I - > > Point types (fold axes ornamentation) in coug_ptsorn.pat and their corresponding, abbreviated descriptions from points.rel: > > >FAC10 Fold ornament, syncline, upright axial plane >FAC4 Fold ornament, anticline, upright axial plane > > 5) coug_ldr - annotation leaders Annotation leaders point to unit labels that are placed outside the perimeter of a particular geologic polygon. These cartographic line entities are attributed with only a single attribute, L-SYMB, and all have the same value, 1. > >COUG_LDR.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 COUG_LDR# 4 5 B - > 29 COUG_LDR-ID 4 5 B - > 33 L-SYMB 3 3 I - > > The data dictionary tables, lines.rel and points.rel each contain three items: L-TAG and P-TAG establish the links between the .aat, and the .pat to the respective data tables. The items L-DEF and P-DEF, respectively provide the coded definition for an entity. The items L-EXP and P-EXP provide a parsed explanation of the code contained in the corresponding -DEF items.
A complete description of the polygon, line, and point data coding schemes is available in U.S. Geological Survey Open-File Reports 97-859, OFR 97-860, and OFR 97-861 (full source citations follow): Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., Bunyapanasarn, T.P., Koukladas, Catherine, Hauser, R.M., and Cossette, P.M., 1997b, Geologic-point attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-859 Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., and Cossette, P.M., 1997c, Geologic-polygon attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-860 Matti, J.C., Powell, R.E., Miller, F.K., Kennedy, S.A., Ruppert, K.R., Morton, G.L., and Cossette, P.M., 1997a, Geologic-line attributes for digital geologic-map databases produced by the Southern California Areal Mapping Project (SCAMP), Version 1.0: U.S.Geological Survey Open-File Report 97-861