| Online link | https://geo-nsdi.er.usgs.gov/metadata/open-file/95-690/metadata.faq.html |
|---|---|
| Description | This report provides digital representation of the Idaho state geologic map (Bond and Wood, 1978). This report is one in a series of digital maps, data files, and reports generated by the US Geological Survey to provide geologic process and mineral resou |
| Originators | Johnson, Bruce R. and Raines, Gary L. |
| Publication | U.S. Geological Survey Open-File Report 95-0690 |
The "Spatial Digital Database for the Geology of the San Pedro River Basin in Cochise, Gila, Graham, Pima, and Pinal Counties, Arizona" report (quib24k.pdf) contains a detailed description of each attribute code and a reference to the associated map symbols in the map source materials. The database includes a geologic linework arc attribute table, quib24k.aat, that relates to the quib24k.co3 (contact look-up table), quib24k.st2 (structure look-up table), quib24k.lgu (linear geologic units look-up table), and quib24k.ref (source reference look-up table) files and a rock unit polygon attribute table, quib24k.pat, that relates to the quib24k.ru (rock unit look-up table) and quib24k.ref (source reference look-up table) files. Associated with this database is a geologic marker point attribute table, quib24kp.pat that relates to quib24kp.sym (symbol description look-up table) and quib24kp.ref (source reference look-up table).
http://pubs.usgs.gov/of/2002/0393/pdf/of02-393.pdf
Geologic units, their labels and descriptions
| Label | Definition |
|---|---|
| linecode | Numeric code used to identify type of linear feature. Linecodes < 100 are used for contacts and boundaries which are described in the QUIB24K.CO3 file.Linecodes > 100 and < 600 represent structural features which are described in the QUIB24K.ST3 file.Linecodes > 800 and < 900 represent linear geologic units which are described in QUIB24K.LGU |
| name | Name given to structural feature |
| source | Numeric code used to identify the data source for the linear feature. Complete references for the sources are listed in the QUIB24K.REF file. |
| desc | Written description of feature |
Attribute description for items in the contact (and boundary) look-up table
| Label | Definition |
|---|---|
| linecode | Numeric code (a value < 100) used to identify type of contact or boundary. (This item also occurs in QUIB24K.AAT.) |
| symbol | Line symbol number used by Arc/Info to plot lines. Symbol numbers refer to the GEOL_DIA.LIN lineset. descriptions for items in the contact (and boundary) look-table |
| type | Major type of line, for example, contact, state boundaries, lines of latitude and longitude used for neatlines. descriptions for items in the contact (and boundary) look-table |
| modifier | Line type modifier, for example, approximate, concealed, gradational. No entry implies "known." descriptions for items in the contact (and boundary) look-table |
| certainty | Degree of certainty of contact or boundary, for example, inferred, uncertain. No entry implies "certain." |
| desc | (no definition) |
Attribute description for items in the structure look-up table
| Label | Definition |
|---|---|
| linecode | Numeric code (a value > 100 and < 600) used to identify type of structural feature. (This item also occurs in QUIB24K.AAT.) |
| symbol | Line symbol number used by ArcInfo to plot arc (line). Symbol numbers refer to the GEOL_DIA.LIN lineset. |
| type | Major type of structure, for example, fault, fracture, fold, other. |
| horizontal | Type of horizontal fault movement, for example, left- lateral, right-lateral. No entry implies "unknown." |
| vertical | Type of vertical fault movement, for example, normal. No entry implies "unknown." |
| fold | Type of fold, for example, anticline, syncline. |
| plunge | Type of plunge on fold, for example, horizontal, plunging, plunging in, plunging out. |
| accuracy | Line type modifier indicating degree of accuracy, for example, approximately located, concealed, gradational. No entry implies "known." |
| certainty | Degree of certainty of contact or boundary, for example, inferred, uncertain. No entry implies "certain." |
| desc | Written description or explanation of structural feature. |
Attribute descriptions for items in the linear geologic unit look-up table
| Label | Definition |
|---|---|
| linecode | Numeric code (a value > 800 and < 900) used to identify type of structural feature. (This item also occurs in QUIB24K.AAT.) |
| unit | Numeric code used to identify the rock unit which is described in the QUIB24K.RU look-up table. (This item also occurs in QUIB24K.RU.) |
| label | Rock unit label (abbreviation) used to label unit on map. (This item is also located in the QUIB24K.RU look-up table.) |
| symbol | Line symbol used by ArcInfo to plot arc (line). Symbol numbers refer to the GEOL_DIA.LIN lineset. |
| label-alpha | Rock unit label (abbreviation) |
| label-gaf | Rock unit label (abbreviation) that uses the GeoAgeFullAlpha font, ver. 1.1 (Richard Koch, personal commun., 2001) |
| type | Major type of line, for example, contact, state boundaries, lines of latitude and longitude used for neatlines |
| accuracy | Line type modifier indicating degree of accuracy, for example, approximately located, concealed, gradational. No entry implies "known." |
| certainty | Degree of certainty of contact or boundary, for example, inferred, uncertain. No entry implies "certain." |
| desc | Written description or explanation of linear geologic unit. |
Descriptions of the items identifying geologic units in the polygon attribute table
| Label | Definition |
|---|---|
| unit | Numeric code used to identify the rock unit which is described in the QUIB24K.RU look-up table. (This item also occurs in the QUIB24K.RU look-up table.) |
| source | Numeric code used to identify the data source for the rock unit. Complete references for the sources are listed in the QUIB24KK.REF file. |
| label-alpha | Rock unit label (abbreviation) used to label unit on map using standard alpha characters. (This item was joined from the QUIB24K.RU look-up table.) |
| desc | Formal or informal unit name. (This item was joined from the QUIB24K.RU look-up table.) |
| surf_unit | Numeric code used to identify the surficial rock that is described in the QUIB24K.RU look-up table under the item unit. (The item surf_unit does not occur in QUIB24K.RU.) The attribute values for surf_unit are a subset of the attribute values for unit. This item, surf_unit, is attributed only when the underlying bedrock has been identified. |
| surf_label | Surficial rock unit label (abbreviation). |
| surf_desc | Formal or informal surficial rock unit name. (This item was joined from the desc iten in QUIB24K.RU look-up table) |
| bedrock | Numeric code used to identify the bedrock that is described in the QUIB24K.RU look-up table under the item unit. (The item bedrock does not occur in QUIG24K.RU.) The attribute values for bedrock are a subset of the attribute values for unit. This item, bedrock, is attributed only when the underlying bedrock has been identified. |
| bed_label | Bedrock unit label (abbreviation). |
| bed_desc | Formal or informal bedrock unit name. (This item was joined from the desc item in QUIB24K.RU look-up table. |
Attribute descriptions for items in the lithology (rock unit) look-up table
| Label | Definition |
|---|---|
| unit | Numeric code used to identify rock unit. (This item also occurs in QUIB24K.PAT.) |
| label | Rock unit label (abbreviation) used to label unit on map. This item was calculated equal to "label-gaf" descriptions for items in the lithology (rock unit) look-up table |
| symbol | Shadeset symbol number used by ArcInfo to plot a filled/ shaded polygon. The symbol numbers used in this file refer to the WPGCMYK.SHD shadeset. |
| label-alpha | Rock unit label (abbreviation) |
| label-gaf | Rock unit label (abbreviation) that uses the GeoAgeFullAlpha font, ver. 1.1 (Richard Koch, personal commun., 2001) |
| name | The prefix portion of the rock unit label that does not include subscripts. (If subscripting is not used in the original unit label, then the "name" entry is the same as the "label" entry.) |
| ss | The suffix portion of the geologic unit label that includes subscripts. |
| lith | Major type of lithostratigraphic unit, for example, unconsolidated sediments, sedimentary rocks, metasedimentary rocks, intrusive rocks, extrusive rocks, metamorphic rocks, water, ice. |
| desc | Formal or informal unit name |
| minage | Minimum stratigraphic age of lithologic unit, for example, CRET, TERT, M PROT. |
| maxage | Maximum stratigraphic age of lithologic unit |
| desc1 | Detailed description of rock unit |
| desc2 | Detailed description of rock unit (continued from desc1, if needed) |
| desc3 | Detailed description of rock unit (continued from desc2, if needed) |
Descriptions of the items identifying geologic map symbols are given in the point attribute table
| Label | Definition |
|---|---|
| pnttype | Basic type of geologic point data being represented (for example, inclined foliation, fault attitude, etc). (This item also occurs in the QUIB24KP.SYM file.) |
| symbol | Marker symbol number used by ArcInfo to identify type of geologic map symbol. Symbol numbers refer to the SCAMP2D.MRK markerset (Matti and others, 1997). (This item also occurs in the QUIB24KP.SYM file.) |
| strike | Strike of bedding, foliation or cleavage. Strike is an azimuthal angle (measured in degrees from 0 to 360 in a clockwise direction from North). |
| dip | Dip of bedding, foliation or cleavage. This value is an angle measured (in degrees from 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. |
| ai_ang | An interim value used to calculate sym$angle. The various structural map symbols in the SCAMP2D.MRK markerset (Matti and others, 1997) had to be rotated by different amounts to achieve their proper map orientation. For the strike and dip symbols, ai_ang = strike -270. |
| sym$ang | The angle used to complete the mathematical rotation of the structural map symbol to its proper orientation on the map. The various point symbols in the SCAMP2D.MRK markerset (after Matti and others, 1997) had to be rotated by different amounts to achieve their proper map orientation. This value is the $angle pseudoitem value for the point. |
| source | Numeric code used to identify the data source for the structural map symbol. Complete references for the sources are listed in the QUIB24KP.REF file. |
Attribute descriptions for items in the geologic map symbols look-up table
| Label | Definition |
|---|---|
| pnttype | Type of point symbol, for example, strike and dip of inclined bedding, strike and dip of inclined cleavage. This item also occurs in the QUIB24KP.PAT file.) |
| symbol | Marker symbol number used by ArcInfo to identify type of structural map symbol. Symbol numbers refer to the SCAMP2D.MRK markerset (Matti and others, 1997). descriptions for items in the geologic map symbols look-up table |
| desc | Written description or explanation of map symbol. |
Descriptive source or reference information for the quib24k and quib 24kp ArcInfo datasets
| Label | Definition |
|---|---|
| source | Numeric code used to identify the data source. (This item also occurs in the QUIB24K.AAT, QUIB24K.PAT, and QUIB24KP.PAT files.) |
| scale | Scale of source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) |
| authors | Author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. |
| year | Source (map) publication date |
| reference | Remainder of reference in USGS reference format. |