Citation:
Citation_Information:
Originator: Paul Carrara
Publication_Date: 2000
Title: Geologic map of the Palisade Quadrangle, Mesa County, Colorado
Edition: 1.0
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-2326
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/mf/2000/mf-2326/
Description:
Abstract:
The Palisade 1:24,000 quadrangle is in Mesa County in western
Colorado. Because the map area is dominated by various surficial
deposits, the map depicts 22 different Quaternary units. Two
prominent river terraces are present in the quadrangle containing
gravels deposited by the Colorado River. The map area contains
many mass movement deposits. Extensive landslide deposits are
present along the eastern part of the quadrangle. These massive
landslides originate on the flanks of Grand Mesa, in the Green
River and Wasatch Formations, and flow west onto the Palisade
quadrangle. In addition, large areas of the eastern and southern
parts of the map are covered by extensive pediment surfaces.
These pediment surfaces are underlain by debris flow deposits
also originating from Grand Mesa. Material in these deposits
consists of mainly subangular basalt cobbles and boulders and
indicate that these debris flow deposits have traveled as much as
10 km from their source area. The pediment surfaces have been
divided into 5 age classes based on their height above
surrounding drainages.
Two common bedrock units in the map area are the Mancos Shale and
the Mesaverde Group both of Upper Cretaceous age. The Mancos
shale is common in low lying areas near the western map border.
The Mesaverde Group forms prominent sandstone cliffs in the
north-central map area.
The map is accompanied by a separate pamphlet containing unit
descriptions, a section on geologic hazards (including
landslides, piping, gullying, expansive soils, and flooding), and
a section on economic geology (including sand and gravel, and
coal). A table indicates what map units are susceptible to a
given hazard. Approximately twenty references are cited at the
end of the report.
Purpose:
This map has been prepared to provide the first detailed view of
the Palisade 1:24,000-scale quadrangle. Previous geologic mapping
that encompassed the map area was at scales of 1:100,000 and 1:
250,000. The Palisade area is an important agricultural region of
Colorado, fruit orchards were first established in the area in
the late 19th century. In addition, the Palisade quadrangle is
undergoing rapid growth, as is the rest of the Grand Valley.
Because of this rapid growth, the recognition of geologic hazards
is important. The map depicts many surficial units associated
with geologic hazards. The map is accompanied by a separate
leaflet containing a section on geologic hazards (including
landslides, piping, gullying, expansive soils, and flooding). A
table indicates what map units are susceptible to a given hazard.
The map will be of interest to town and county officials, land-
use planners, as well as the general public.
Supplemental_Information:
Map political location: Mesa County, Colorado
Compilation scale: 1:24,000
Geology mapped in 1996 and 1997
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrara, Paul E
Contact_Organization: USGS-GEO-CRG-ESP
Contact_Address:
Address_Type: mailing and physical address
Address:
Mail Stop 913, USGS
Box 25046, Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: US
Contact_Voice_Telephone: 303-236-1287
Contact_Electronic_Mail_Address: pcarrara@usgs.gov
Data_Set_Structure:
Data_Set_Part:
Part_Name: palpoly
Part_Type: Arc/Info coverage
Part_Description:
Contains all contact lines and label points for each polygon.
The CODE item defines the significance of the lines as listed
below. The P1 item defines the category of polygon as listed
below and in the TEXT and SYMBOL items in the palpoly.pat
INFO file. The TEXT item contains the geologic unit
abbreviations and and SYMBOL item contains the color524.shd
color numbers.
Data_Set_Part:
Part_Name: palline
Part_Type: Arc/Info coverage
Part_Description:
Contains faults, fold axis, and other non-contact lines.
Faults that are contacts also appear in the palpoly coverage.
The CODE item defines the significance of the lines as listed
below and in the palline.aat INFO file. The TEXT item
contains the line feature description.
Data_Set_Part:
Part_Name: palsym
Part_Type: Arc/Info coverage
Part_Description:
Contains points recording observations, such as strike and
dip of bedding, points for posting of dip or plunge values
associated with the observation points, and arcs that draw
out the symbols associated with the observation points and
the symbols used to decorate certain lines. The CODE item
defines the type of observation as listed below. For
rotational observations (CODE 200 to 299) the P1 item is the
azimuth (strike) and the P2 item is the inclination (dip).
Data_Set_Part:
Part_Name: paltext
Part_Type: Arc/Info coverage
Part_Description:
Contains text points that define the position, rotation, and
size of text to appear on the face of the map. Also includes
arcs that draw leaders from the text to the appropriate
polygons. This coverage is for cartographic purposes and
does not include data critical to the database information.
The P1 item defines rotation of the text, the P2 item the
size of text, and the TEXT item the actual text.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19970927
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -108.375
East_Bounding_Coordinate: -108.25
North_Bounding_Coordinate: 39.125
South_Bounding_Coordinate: 39.00
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: geologic maps
Theme_Keyword: geologic structure
Theme_Keyword: bedrock geologic units
Theme_Keyword: surficial geologic units
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology
Theme_Keyword: Landslides
Theme_Keyword: Mancos Shale
Theme_Keyword: Mesa Verde Formation
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: United States of America
Place_Keyword: Colorado
Place_Keyword: Mesa County
Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: f08077 = Mesa
Access_Constraints: none
Use_Constraints:
None. Acknowledgment of the U.S. Geological Survey would be
appreciated in products derived from these data.
