Geospatial data files of this data set:
gj24k: geology polygons, contacts, faults
gjpnt: point data representing bedding attitudes
gjline: line representing location of the cross section,
and fold axes
Symbolsets used for plotting in ArcInfo:
wpgcmykg.shd: shadeset
geol_sfo.lin: lineset
geoscamp1.mrk: markerset
Online Links:
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COVERAGE NAME: gj24k
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USER-DEFINED ITEMS IN GJ24K.PAT:
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ATTRIBUTE NAME: UNIT
DATABASE ITEM STRUCTURE: 4,4,I,0
DESCRIPTION: unique numeric identifier for each geologic unit
ITEM VALUES FOR 'UNIT':
integer value in the range 1 - 38
ATTRIBUTE NAME: LABEL
DATABASE ITEM STRUCTURE: 10,10,C,0
DESCRIPTION: geologic unit label
ITEM VALUES FOR 'LABEL':
(see table below)
ATTRIBUTE NAME: DESC
DATABASE ITEM STRUCTURE: 100,100,C,0
DESCRIPTION: text description of geologic unit
ITEM VALUES FOR 'DESC':
(see table below)
ATTRIBUTE NAME: SYMBOL
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: shade symbol used to color geology polygons
ITEM VALUES FOR 'SYMBOL':
integer value in the range 12 - 930
RELATIONSHIP OF ITEMS 'UNIT', 'LABEL', 'SYMBOL', and 'DESC':
UNIT LABEL SYMBOL DESC
1 af 20 Artificial fill
32 Jeb 330 Board beds unit of the Entrada Formation
33 Jes 591 Slickrock Member of the Entrada Formation
34 Jk 530 Kayenta Formation
28 Jmb 580 Brushy Basin Member of the Morrison Formation
38 Jmb 580 Bentonite quarry located in Jmb
29 Jms 693 Salt Wash Member of the Morrison Formation
30 Jmt 560 Tidwell Member of the Morrison Formation
31 Jw 890 Wanakah Formation
35 Jwg 785 Wingate Sandstone
27 Kb 880 Burro Canyon Formation
26 Kd 590 Dakota Formation
25 Km 480 Mancos Shale
4 Qa 60 Alluvium deposited by tributary streams
15 Qac 271 Alluvium and colluvium, undivided
2 Qalc1 40 Youngest alluvium deposited by the Colorado
River
36 Qalc1 40 Gravel pit
5 Qalc2 80 Oldest alluvium deposited by the Colorado River
3 Qalg 375 Youngest alluvium deposited by the Gunnison
River
17 Qaso 393 Old alluvial-slope deposit
23 Qc 30 Colluvium
14 Qfy 51 Young fan-alluvium and debris-flow deposits
18 Qlg 484 Local gravel deposits
19 Qlg/Qt30 284 Local gravel deposits over terrace alluvium 30
of the Colorado River
24 Qlso 190 Older landslide deposits
22 Qlsy 899 Younger landslide deposits
16 Qpwf 12 Pediment deposit of Walker Field
20 Qse 151 Eolian sand and sheetwash deposits
21 Qse/Qt30 163 Eolian sand and sheetwash deposits over terrace
alluvium 30 of the Colorado River
12 Qt100 42 Terrace alluvium 100 of the Colorado River
13 Qt170 74 Terrace alluvium 170 of the Colorado River
8 Qt30 70 Terrace alluvium 30 of the Colorado River
9 Qt60c 93 Terrace alluvium 60 of the Colorado River
10 Qt60g 194 Terrace alluvium 60 of the Gunnison River
11 Qtc/Qtg 647 Terrace alluvium of the Colorado River over
terrace alluvium of the Gunnison River
7 Qtgu 696 Terrace alluvium of the Gunnison River,
undivided
6 Qvf 33 Valley-fill deposits
37 river 930 river water
USER-DEFINED ITEMS IN GJ24K.AAT:
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ATTRIBUTE NAME: LINECODE
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: unique numeric identifier for linear feature type
ITEM VALUES FOR 'LINECODE':
integer value in the range 1 - 106
ATTRIBUTE NAME: SYMBOL
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: line symbol to be used to draw line entities
ITEM VALUES FOR 'SYMBOL':
integer value in the range 1 - 227
ATTRIBUTE NAME: TYPE
DATABASE ITEM STRUCTURE: 10,10,C,0
DESCRIPTION: text description of line type
ITEM VALUES FOR 'TYPE':
boundary
contact
fault
neatline
ATTRIBUTE NAME: MODIFIER
DATABASE ITEM STRUCTURE: 20,20,C,0
DESCRIPTION: modifier, if any, for the 'type' item above
ITEM VALUES FOR 'MODIFIER':
approximate
certain
concealed
scarp terrace
ATTRIBUTE NAME: DESC
DATABASE ITEM STRUCTURE: 100,100,C,0
DESCRIPTION: text description of linear geologic feature
ITEM VALUES FOR 'DESC':
(see table below)
RELATIONSHIP OF ITEMS 'LINECODE', 'SYMBOL', 'TYPE', 'MODIFIER', and 'DESC':
LINECODE SYMBOL TYPE MODIFIER DESC
1 1 contact certain contact, certain
2 3 contact approximate contact, approximately
located
3 4 boundary approximate gravel quarry boundary
6 4 boundary approximate bentonite quarry boundary
106 8 fault approximate normal fault,
approximately located,
queried to indicate end
of recognizable feature
102 51 fault certain normal fault, certain,
with bar and ball on
downthrown side
4 172 contact scarp terrace contact coincident with
scarp terrace, hachures
on low side of scarp
101 173 fault certain normal fault, certain
103 175 fault approximate normal fault,
approximately located
104 176 fault concealed normal fault, concealed
105 185 fault approximate normal fault,
approximately located,
with bar and ball on
downthrown side
5 227 neatline neatline to define limits
of geologic map area
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COVERAGE NAME: gjpnt
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USER-DEFINED ITEMS IN GJPNT.PAT:
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ATTRIBUTE NAME: SYMBOL
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: symbol used to draw point feature
ITEM VALUES FOR 'SYMBOL':
2
63
ATTRIBUTE NAME: STRIKE
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: compass orientation of feature, in degrees
ITEM VALUES FOR 'STRIKE':
integer value in the range 0 - 360
ATTRIBUTE NAME: DIP
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: inclination from vertical of feature
ITEM VALUES FOR 'DIP':
integer value in the range 0 -90
ATTRIBUTE NAME: DESC
DATABASE ITEM STRUCTURE: 100,100,C,0
DESCRIPTION: text description of feature
ITEM VALUES FOR 'DESC':
strike and dip of inclined bedding calculated from outcrop pattern using
3 point solution
strike and dip of inclined bedding measured in the field
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COVERAGE NAME: gjline
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USER-DEFINED ITEMS IN GJLINE.AAT:
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ATTRIBUTE NAME: LINECODE
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: unique numeric identifier for linear feature type
ITEM VALUES FOR 'LINECODE':
integer value in the range 107 - 120
ATTRIBUTE NAME: SYMBOL
DATABASE ITEM STRUCTURE: 3,3,I,0
DESCRIPTION: line symbol to be used to draw line entities
ITEM VALUES FOR 'SYMBOL':
integer value in the range 7 - 176
ATTRIBUTE NAME: TYPE
DATABASE ITEM STRUCTURE: 10,10,C
DESCRIPTION: text description of line type
ITEM VALUES FOR 'TYPE':
fold
xsec_line
ATTRIBUTE NAME: ACCURACY
DATABASE ITEM STRUCTURE: 15,15,C
DESCRIPTION: apparent accuracy of line type
ITEM VALUES FOR 'ACCURACY':
approximate
certain
concealed
ATTRIBUTE NAME: CERTAINTY
DATABASE ITEM STRUCTURE: 15,15,C
DESCRIPTION: questionable or not questionable
ITEM VALUES FOR 'CERTAINTY':
queried
ATTRIBUTE NAME: DESC
DATABASE ITEM STRUCTURE: 100,100,C
DESCRIPTION:
ITEM VALUES FOR 'DESC':
(see table below)
RELATIONSHIP OF ITEMS 'LINECODE', 'SYMBOL', 'TYPE', 'ACCURACY', 'CERTAINTY', 'DESC'
LINECODE SYMBOL TYPE ACCURACY CERTAINTY DESC
110 7 fold concealed queried concealed axis of
anticline,
queried to
indicate end of
recognizable
feature
107 64 fold certain axis of
anticline,
certain
120 173 xsec_line cross-section
location line
A-A'
108 175 fold approximate axis of
anticline,
approximately
located
109 176 fold concealed axis of
anticline,
concealed
Geology south of the Colorado River mapped by Robert B. Scott and William C. Hood in 1998 and 1999. Geology north of the Gunnison River mapped by Paul E. Carrara in 1999. Digital compilation by Kyle E. Murray in 2000.
To update and reinterpret earlier geologic mapping, and provide sufficient geologic information for land-use decisions for private land and for areas managed by the Bureau of Land Management and the National Park Service. Use of these data at scales greater than 1:24,000 would be inappropriate because mapping was performed at that scale.
Are there legal restrictions on access or use of the data?Access_Constraints: none
Use_Constraints:none. Acknowledgment of the U.S. Geological Survey would be appropriate in products derived from these data.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.
The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials.
These data are intended for use at 1:24,000 scale. Any hardcopies utilizing these data shall clearly indicate their source. If the user has modified the data in any way (s)he is obligated to describe the types of modifications they have performed on the hardcopy map. User specifically agrees not to misrepresent these data, nor to imply that changes they made were approved by the U.S. Geological Survey or the authors of this geologic map database.
| Data format: | ARCE, Shapefile (version 7.1.2) |
|---|---|
| Network links: |
http://pubs.usgs.gov/mf/2002/mf-2363/mf-2363.tar.gz http://pubs.usgs.gov/mf/2002/mf-2363/mf2363.zip |