puebpoly: polygon coverage containing geologic unit contacts and labels. puebline: arc coverage containing faults. puebpnt: point coverage containing point locations of decorative bar-and-ball symbols for faults. geol_sfo.lin: This lineset file defines geologic line types in the geologically themed coverages. geoscamp2.mrk: This markerset file defines the geologic markers in the geologically themed coverages. color524.shd: This shadeset file defines the cmyk values of colors assigned to polygons in the geologically themed coverages.
PUEBPOLY.PAT: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 AREA 8 18 F 5 9 PERIMETER 8 18 F 5 17 PUEBPOLY# 4 5 B - 21 PUEBPOLY-ID 4 5 B - 25 SOURCE 4 4 I - 29 LABEL 10 10 C - 39 DESC 123 123 C - 162 SYMBOL 3 3 I - PUEBPOLY.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 PUEBPOLY# 4 5 B - 29 PUEBPOLY-ID 4 5 B - 33 NAME 30 30 C - 63 SOURCE 4 4 I - 67 SYMBOL 3 3 I - Unique values of NAME in PUEBPOLY.AAT: Fault, Quaternary age, Contact, Map boundary, Shoreline PUEBPOLY.REF: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 SOURCE 4 4 I - 5 SCALE 8 8 I - 13 AUTHORS 200 200 C - 213 YEAR 4 4 I - 217 REFERENCE 250 250 C -puebline coverage: contains faults. In the puebline.aat INFO file the NAME item indicates the name given to the structural feature.
PUEBLINE.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 PUEBLINE# 4 5 B - 29 PUEBLINE-ID 4 5 B - 33 NAME 80 80 C - 113 SOURCE 4 4 I - 117 SYMBOL 3 3 I - Unique values of NAME in PUEBLINE.AAT: Fault, Quaternary age , High-angle reverse fault - Inferred PUEBLINE.REF: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 SOURCE 4 4 I - 5 SCALE 8 8 I - 13 AUTHORS 200 200 C - 213 YEAR 4 4 I - 217 REFERENCE 250 250 C -puebpnt coverage: Contains points recording locations of bar-and-ball symbols. In the puebpnt.pat INFO file the PTTYPE item lists the type of point symbol, e.g., bar-and-ball. The SYMBOL item lists the marker symbol used by ArcInfo to identify the type of structural map symbol. Symbol numbers refer to symbols in the geoscamp2.mrk markerset. ). The STRIKE item contains the azimuthal value of any point symbol as well as strike of bedding, and trend of fold axis, where applicable. Strike is an azimuthal angle. Measured in degrees from 0 to 360 in a clockwise direction from North, the STRIKE value also specifies the dip direction, where the dip direction is 90 degrees clockwise relative to the STRIKE. The DIP item contains the dip of bedding as well as plunge angles, where applicable. This value is an angle measured (in degrees 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. The SOURCE item lists the numeric code used to identify the data source.
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 AREA 8 18 F 5 9 PERIMETER 8 18 F 5 17 PUEBPNT# 4 5 B - 21 PUEBPNT-ID 4 5 B - 25 PTTYPE 32 32 C - 57 SYMBOL 3 3 I - 60 STRIKE 3 3 I - 63 DIP 3 3 I - 66 SOURCE 4 4 I - Unique values of PTTYPE in PUEBPNT.PAT: Ball-and-bar PUEBPNT.REF: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 SOURCE 4 4 I - 5 SCALE 8 8 I - 13 AUTHORS 200 200 C - 213 YEAR 4 4 I - 217 REFERENCE 250 250 C - Database root name: pueb LABEL AND DESCRIPTION FOR GEOLOGIC UNITS MAPPED LABEL DESC R Bedrock afa Alluvial-fan deposit afb Alluvial-fan gravelly loam afk Alluvial-fan gravelly loam agm Alluvial gravel and sand (Verdos and Rocky Flats Alluviums, undivided; early middle Pleistocene and early Pleistocene) ags Alluvial sand, silt, clay, and gravel (Louviers and Slocum Alluviums, undivided; late middle Pleistocene) asa Alluvial sand, silt, clay, and gravel (post-Piney Creek alluvium, Piney Creek Alluvium, and pre-Piney Creek alluvium of Hunt, 1954, and Scott, 1960; Broadway Alluvium cac Arkosic loamy colluvium and sheetwash alluvium cbh Blocky sedimentary-rock colluvium cbm Carbonate-clast loamy colluvium cbs Rhyolite- and andesite-clast colluvium cbu Mixed-lithology blocky colluvium cbv Metamorphic and metavolcanic blocky colluvium cbw Blocky basalt and andesite-clast colluvium cby Blocky feldspathic-sandstone colluvium ccd Calcareous clayey colluvium cck Tuff-clast loam and clay loam colluvium ccm Andesitic clayey colluvium cgc Gneiss- and granite-clast gravelly colluvium cgg Sandstone-clast sandy loam to clay loam colluvium cgh Arkosic-clast loamy colluvium clo Shale-, chalk-, and chalky limestone-clast loamy colluvium clx Clay loam colluvium cra Hogback and rangefront colluvium, alluvium, and rock outcrop complex csk Grus, crystalline-clast colluvium, alluvium, and rock outcrop csm Tuffaceous colluvium dba Crystalline-clast deposits, Disintegrated and periglacial deposits, bouldery till, and rock outcrop dbc Sedimentary-clast deposits, Disintegrated and periglacial deposits, bouldery till, and rock outcrop dbd Mixed-lithology-clast deposits, Disintegrated and periglacial deposits ed Stabilized dune sand elb Loess (Peoria Formation) es Eolian sand esa Eolian sheet sand and loess (Included in cover sand of Frye and Leonard, 1957, Black-water Draw Formation of Reeves, 1976, described by Holiday, 1989) f Artificial landfill gge Outwash sand and gravel (Outwash of pre-Bull Lake glaciations) ggq Outwash sand and gravel (Outwash of Bull Lake, Pinedale, and post-Pinedale ages) jba Bouldery volcanic-rock landslide deposit jbc Bouldery crystalline-rock landslide deposit jbg Granodiorite-block debris-avalanche deposit jea Slump-block landslide deposits, earthflow and mudflow deposits oc Playa clay pga Pediment gravel s Slag tbg Crystalline-clast bouldery till, Bouldery till (till of Pinedale and Bull Lake glaciations) tbi Sedimentary-clast bouldery till, Bouldery till (till of Pinedale and Bull Lake glaciations) tbj Mixed-lithology-clast bouldery till, Bouldery till (till of Pinedale and Bull Lake glaciations) tbk Bouldery till (till of pre-Bull Lake glaciations) w Open water wla Loamy or clayey sheetwash alluvium xch Clayey, calcareous disintegration residuum xci Sandy clay disintegration residuum xlh Limestone-chip silty loamy disintegration residuum xlj Silty loam disintegration residuum xlu Feldspathic loamy disintegration residuum xsg Feldspathic quartz-sand disintegration residuum
Many geologic contacts resulted from generalizing parts of the Geologic Map of the Pueblo 1x2-degree quadrangle, south-central Colorado (G. R. Scott, R.B. Taylor, R.C. Epis, and R.A. Wobus, 1978, USGS Miscellaneous Investigations Series Map I-1022). This linework was originally intended to be reduced as partial input for a more extensive 1:1,000,000-scale map. We digitized these lines initially, edited them to obtain more detail and accuracy, and added data from soil and geologic reports appropriate for a 1:250,000-scale published map.
The report may be used for land-use planning (e.g., selecting land-fill sites, greenbelts, avoiding geologic hazards), for finding aggregate resources (crushed rock, sand, and gravel), and for study of geomorphology and Quaternary geology. The report identifies geologic hazards (e.g., landslides, swelling soils, heaving bedrock, and flooding) if they are known to be located in, or characteristic of, mapped units. Surficial deposits in the quadrangle are evidence of depositional events of the Quaternary Period (the most recent 1.8 million years). Some events such as floods are familiar to persons living in the area, while others preceded human occupation. The latter include glaciation, probable large earthquakes, protracted drought, and widespread deposition of sand and silt by wind. At least twice in the past 200,000 years (most recently from about 30,000 to 12,000 years ago) global cooling caused glaciers to form on Pikes Peak and in the high parts of the Sangre de Cristo Mountains. Some glaciers advanced down valleys, deeply eroded the bedrock, and deposited moraines (map units tbk, tbg, tbj, tbi) and deposited outwash (ggq, gge), in the Wet Mountain Valley. On the plains (east part of map area), eolian sand (es), stabilized dune sand (ed), and loess (elb) are present and in places contain buried paleosols, which indicate sand dune deposition alternating with periods of stabilized landscape during which soils developed.
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Use_Constraints:none. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.
Any use of trade names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this digital spatial data has been subjected to rigorous review and is substantially complete, it is released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
|Data format:||Geologic units and structural features in format ARCE (version 8.1.2) Size: 1.4|
|Data format:||Geologic units and structural features in format Shapefile (version 1.0) Size: 1.4|