Clautice, K.H.
Newberry, R.J.
Pinney, D.S.
Blodgett, R.B.
Bundtzen, T.K.
Gage, B.G.
Harris, E.E.
Liss, S.A.
Miller, M.L.
Reifenstuhl, R.R.
Clough, J.G.
2001
Geologic map of the Chulitna region, southcentral Alaska
report, tabular digital data, map, vector digital data
Report of Investigation
RI 2001-1B
Fairbanks, Alaska - USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
32 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/2771
This map is the result of field investigations by DGGS in 1997 and 1998. This geologic map and report supersede the previously released Public Data File 99-24B, Preliminary interpretive bedrock geologic map of the Healy A-6 Quadrangle, southcentral Alaska. The current map has been updated to include mapping of areas adjacent to the Healy A-6 Quadrangle, newly interpreted bedrock units based on newly acquired analytical, paleontologic, and Ar40/Ar39 data. Ages for the rock units were modified. Field investigations were part of a two-year mapping program to provide geologic ground truth for airborne geophysical surveys flown by DGGS in the Chulitna region of southcentral Alaska during 1996.
The purpose of this project was to produce a 1:63,360-scale geologic map for the airborne geophysical surveys released by DGGS in the Chulitna region during 1996. The geologic data are important for identifying potential mineral deposits and for characterizing and distinguishing between geologic units.
The layers listed below are present as ArcGIS shape files. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Basic unit information is also included in the unit code set file "RI2001-1_codeset.pdf." Layers include:
>chu_allsrfgeo_arc surficial geologic unit boundaries (arc)
>chu_allsrfgeo_polygon surficial geologic units (polygon)
>chubedcomp_arc bedrock geologic unit boundaries (arc)
>chubedcomp_polygon bedrock geologic units (polygon)
>chucompstrsym_point points for the strike, dip, and plunge of bedding planes, foliation, and various lineaments
>chudikecomp_arc vector lines for dikes of undifferentiated composition
>chufoldcomp_arc types of folds, anticlines, synclines, or lines depicting a cross-section
>chufoldcomp_point fold, anticline, syncline, or cross-section symbols
>chuhflscomp_arc hornfels unit boundaries (arc)
>chuhflscomp_polygon hornfels units (polygon)
>chusample_point point data indicating the location of felsic dikes
>chustructcomp_arc vector lines for types of faults
1997
2001
publication date
None planned
-150.032
-149.113
63.3044
62.9604
63.25
-150.00
63.25
-149.50
63.22
-149.50
63.22
-149.37
63.30
-149.37
63.30
-149.17
63.26
-149.11
63.25
-149.11
63.01
-149.50
63.00
-149.50
63.00
-149.51
62.97
-149.56
62.97
-149.92
63.00
-150.00
63.01
-150.00
63.02
-150.03
63.10
-150.03
63.12
-150.00
63.25
-150.00
ISO 19115 Topic Category
geoscientificInformation
none
40Ar/39Ar
Ar-Ar
Bedrock
Geology
Gold
Major Oxides
Mining
Plutons
STATEMAP Project
none
Alaska, State of
Chulitna
Healy Quadrangle
Southcentral Alaska
none
Chulitna Terrane
Wrangellia
Kahiltna Terrane
Nikolai Greenstone
none
Tertiary
Cenozoic
Cretaceous
Mesozoic
Jurassic
Triassic
Paleozoic
Permian
Carboniferous
Devonian
Silurian
This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
GIS Data Manager/Cartographer
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
(907) 451-5029
(907) 451-5020
(907) 451-5050
dggspubs@alaska.gov
You may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change.
The Chulitna project is part of DGGS's Airborne Geophysical and Geological Mineral Inventory project (AGGMI), a special multi-year investment by the State of Alaska to produce framework geologic maps that will expand the knowledge base of Alaska's geologic and mineral resources, catalyze future private-sector mineral exploration and development, and guide government agencies' planning projects. The AGGMI project is funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS). Partial funding for the Chulitna project was also provided by the U.S. Geological Survey under U.S. Department of the Interior, U.S. Geological Survey, National Cooperative Geological Survey STATEMAP Cooperative Agreement 98HQAG2083. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. government.
Additional Acknowledgments: C.C. Hawley shared his expertise on the geology, mineral deposits, and mining history of the Chulitna district. Geochronology performed by Paul Layer, Deitre Hansen, Kaitlin Hansen, and Jeff Drake with the University of Alaska Fairbanks Geochronology Lab; paleontologic work was performed under the direction of Robert Blodgett by M.Z. Won and Paula Noble (radiolarians), Chris McRoberts, Michael Sandy, and George Stanley (Mesozoic megafossils), and Norman Savage (conodonts); Michael Whalen assisted with the measurement and interpretation of a Permian limestone section; David Stone, with students Howard Scher and Chad Schopp, conducted paleomagnetic studies; Paul Chu and Adam Low, UAF student interns, provided office compilations and Sara Haug provided field assistance; Mike Messing provided personal geologic mapping and photos of portions of the area.
Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor.
Gage, B.G.
Liss, S.A.
Clautice, K.H.
199810
Preliminary geochemical and major oxide data: Chulitna project, Healy A-6 Quadrangle and nearby areas (1997 and 1998)
map
Public Data File
PDF 98-36
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
48 p., 2 sheets, scale 1:63,360, 1 disk
http://dx.doi.org/10.14509/1862
Blodgett, R.B.
Clautice, K.H.
2000
Fossil locality map for the Healy A-6 Quadrangle, southcentral Alaska
Map and report
Report of Investigation
RI 2000-5
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
42 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/2680
Clautice, K.H.
Newberry, R.J.
Blodgett, R.B.
Bundtzen, T.K.
Gage, B.G.
Harris, E.E.
Liss, S.A.
Miller, M.L.
Reifenstuhl, R.R.
Clough, J.G.
Pinney, D.S.
2001
Bedrock geologic map of the Chulitna region, southcentral Alaska
report, tabular digital data, map, vector digital data
Report of Investigation
RI 2001-1A
Fairbanks, Alaska - USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
31 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/2768
Pinney, D.S.
200105
Surficial-geologic map of the Chulitna region, southcentral Alaska
Report of Investigation
RI 2001-1C
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
3 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/3313
Pinney, D.S.
2001
Engineering-geologic map of the Chulitna region, southcentral Alaska
Report of Investigation
RI 2001-1D
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
5 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/3314
Burns, L.E.
Dighem
WGM Mining and Geological Consultants
1997
CD-ROM digital archive files of 1996 survey data for Chulitna and Petersville mining districts, Alaska
tabular digital data, raster digital data, vector digital data
Public Data File
PDF 97-5
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
1 CD-ROM
http://dx.doi.org/10.14509/1747
Pritchard, R.A.
Dighem
1997
Project report of the airborne geophysical survey for the Chulitna and Petersville mining districts, Alaska
map
Public Data File
PDF 97-8
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
293 p., 2 sheets, scale 1:63,360
http://dx.doi.org/10.14509/1750
Burns, L.E.
1997
Portfolio of aeromagnetic and resistivity maps of the Chulitna mining district
atlas
Public Data File
PDF 97-7
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
13 p., 1 sheet
http://dx.doi.org/10.14509/1749
Geologic point, line, and polygon data were determined in the field using 1:63,360-scale topographic maps and altimeters. Data were digitized from mylar compilations. Bedrock geologic information was compiled on stable mylar with abundant control points at 1:63,360 scale and registered in ArcEdit, then layered onto a 1:63,360-scale USGS topographic base. Geologic data included in the compilation are the field maps and notes from this project as well as data from other sources as noted in the "Sources Cited" section.
Polygon topology present and clean on appropriate data; others are line or point data.
This dataset includes geospatial information about geologic units, age and field sample locations, structural features, structural measurements, and dike locations.
Location data were determined visually using topographic maps at scales of 1:63,360 and larger. Altimeters were also used. Occasional use was made of hand-held GPS, but Selective Availability, a random 100-meter error assigned to GPS signals by the U.S. government, was in place at the time. Geologic contacts, sample, and station locations were visually hand-plotted onto stable mylar bases from the field maps. The coordinates of sample and station locations were entered into an Excel spreadsheet with a digitizing tablet. Station notes and sample descriptions were entered into an Excel spreadsheet. The lists of samples were visually checked against the lists of analyzed samples returned from the laboratories. It was verified that all the samples plotted on the maps are included in the various tables and spreadsheets.
100
Approximate error in meters. Considering the errors inherent in the USGS topographic maps, locating oneself in the field, the 100-meter random error of Selective Availability assigned to GPS signals, and the methods of digitizing localities, stations, and samples are located to an accuracy of between 10 and 100 meters.
Hawley, C.C.
Clark, A.L.
1974
Geology and mineral deposits of the upper Chulitna district, Alaska
Map and report
U.S. Geological Survey Professional Paper
PP 758-B
Washington D.C., Maryland
United States Government Printing Office
p. B1-B47, 2 sheets, scale 1:12,000
12000
paper
1974
Publish date
Hawley and Clark, 1974
These data were used to further define the geology of the Chulitna area. See this publication cited in the Process Step section below.
Jones, D.L.
Silberling, N.J.
Csejtey, B., Jr.
Nelson, W.H.
Blome, C.D.
1980
Age and structural significance of ophiolite and adjoining rocks in the upper Chulitna district, south-central Alaska
Map and report
U.S. Geological Survey Professional Paper
PP 1121-A
Washington D.C.
United States Government Printing Office
p. A1-A21, 2 plates in text, 1 sheet, scale 1:63,360
paper
1980
Publication date
Jones and others, 1980
These data were used to further define the geology of the Chulitna area. See this publication cited in the Process Step section below
Csejtey, B., Jr.
Mullen, M.W.
Cox, D.P.
Striker, G.D.
1992
Geology and geochronology of the Healy Quadrangle, south-central Alaska
Map and report
U.S. Geological Survey Map I-1961
I-1961
Washington, D.C.
United States Government Printing Office
63 p., scale 1:25,000, 2 sheets
paper
1992
Publication date
Csejtey and others, 1992
These data were used to further define the geology of the Chulitna area. See this publication cited in the Process Step section below
Fieldwork - Fieldwork for bedrock investigations, including ridge and valley traverses, road cut investigations, and river exposures, was conducted for six weeks between June 1997 and July 1998 by a crew of from six to seven geologists. Field notes and rock samples were collected throughout the footprint of the geophysical survey for bedrock investigations. Approximately seven person-days were spent on field investigations for the surficial geology; most surficial geology was created from air photos. Bedrock mapping involved using the geophysical maps on a daily basis for checking geologic contacts and units. Mappers recorded observations in field notebooks and on topographic maps, predominantly at 1:63,360 scale. In some areas, photocopies of topography at varying enlarged scales were used. All compilations were made by hand on stable mylar at 1:63,360 scale. Stations were located using topographic maps, compasses, and altimeters. In some instances, GPS devices with location precision varying up to 100 meters were used. Stations were also plotted by hand on stable mylar topographic bases and coordinates determined with a digitizing tablet. Field notes were entered into an Excel spreadsheet in the field office.
Burns and others, 1997
1998
Laboratory data compilation - Laboratory analyses were performed on rock samples collected during the fieldwork from June 1997 intermittently through December 1998. Published geochemical and age results are found in Clautice and others (2001) and Gage and others (1998). Unpublished laboratory results include petrographic work on thin sections and modal analysis of rock slabs stained for plagioclase and potassium feldspar. Results from major-oxide and trace-element geochemistry of igneous and metamorphic rocks were used to calculate CIPW Norms for use in classifying rocks according to established petrologic nomenclature. Thin sections produced by this study are currently stored at the DGGS office in Fairbanks, Alaska. Rock samples, including geochemical sample pulps and rock hand samples from most field stations, are currently stored at the DGGS warehouse in Fairbanks. Final storage for most rock samples generated by this study will be at the DGGS Geologic Materials Center (GMC) in Eagle River, Alaska.
Clautice and others, 2001
Gage and others, 1998
1998
Laboratory data compilation - Laboratory analyses were performed on paleontological samples from July 1997 intermittently through July 1999. Paleontologic data were compiled in Blodgett and Clautice (2000). Paleontologic samples are currently stored at the DGGS Geologic Materials Center (GMC) in Eagle River, Alaska.
Blodgett and Clautice, 2000
2000.
Geologic map compilation - The bedrock geologic map was compiled using field notes from fieldwork process step (above), analytical results from laboratory data compilation process step (above), and all known geologic data from previous work in the quadrangle. The main sources of existing data include Hawley and Clark (1974), Jones and others (1980), Csejtey and others (1992), Gage and others (1998), Clautice and others (1998) and Burns and others (1997). Data were compiled on multiple layers of stable mylar at 1:63,360 scale. Relevant information from all mylar layers was compiled onto one stable mylar sheet with abundant control points.
Burns and others, 1997
Clautice and others, 1998
Csejtey and others, 1992
Gage and others, 1998
Hawley and Clark, 1974
Jones and others, 1980
2000
Digital cartography - The geologic map compilation mylar (above) was hand digitized in ArcEdit 7.0.4 with an RMS error of 0.002. Bedrock polygons were coded. Excel files of previously digitized point data, including age date samples, some major oxide analyses, dikes too small to plot at 1:63,360 scale, and structural measurements, were translated into Arc/Info format and plotted.
2001
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chubedcomp_arc
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chubedcomp_polygon
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chu_allsrfgeo_arc
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chu_allsrfgeo_polygon
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chucompstrsym_point
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chudikecomp_arc
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chufoldcomp_arc
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chufoldcomp_point
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chuhflscomp_arc
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chuhflscomp_polygon
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chusample_point
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000128
0.000128
meters
chustructcomp_arc
North American Datum of 1927
Clarke 1866
6378206.4
294.978698
chu_allsrfgeo_arc.shp
Object type is vector, there are 3849 rows associated with this entity, and the entity values refer to surficial geologic map unit contacts.
Alaska Division of Geological & Geophysical Surveys
chu_allsrfgeo_arc
CODE
Line symbol for surficial geologic map unit contacts
Alaska Division of Geological & Geophysical Surveys
6
Contact, approximately located
Alaska Division of Geological & Geophysical Surveys
chu_allsrfgeo_polygon.shp
Object type is vector, there are 1604 rows associated with this entity, and the entity values refer to surficial geologic map units.
Alaska Division of Geological & Geophysical Surveys
chu_allsrfgeo_polygon
UNIT
Surficial map unit labels, any unit ending with a "?" indicates uncertainty
Alaska Division of Geological & Geophysical Surveys
b
Undifferentiated bedrock
Alaska Division of Geological & Geophysical Surveys
bc
Thinly covered bedrock
Alaska Division of Geological & Geophysical Surveys
lake
Lake
Alaska Division of Geological & Geophysical Surveys
glacier
Glacier
Alaska Division of Geological & Geophysical Surveys
RI2001-1_codeset.pdf
Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/RI2001-1_codeset.pdf
X-COORD
X-coordinate
ESRI, Arc command "addxy", numeric coordinates defining feature location
0
393398.2
meters
Y-COORD
Y-coordinate
ESRI, Arc command "addxy", numeric coordinates defining feature location
0
7021089
meters
SUNIT
Surficial map unit labels, indicates source of the unit name is from the Surficial-geologic map of the Chulitna region, southcentral Alaska (RI 2001-1C). Any unit ending with a "?" indicates uncertainty
Alaska Division of Geological & Geophysical Surveys
b
Undifferentiated bedrock
Alaska Division of Geological & Geophysical Surveys
bc
Thinly covered bedrock
Alaska Division of Geological & Geophysical Surveys
lake
Lake
Alaska Division of Geological & Geophysical Surveys
glacier
Glacier
Alaska Division of Geological & Geophysical Surveys
RI2001-1_codeset.pdf
Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/RI2001-1_codeset.pdf
SURFBED
Code designator to distinguish areas of surficial deposits from areas of bedrock deposits
Alaska Division of Geological & Geophysical Surveys
S
Surficial deposit
Alaska Division of Geological & Geophysical Surveys
B
Bedrock deposit, including exposed and thinly-covered units
Alaska Division of Geological & Geophysical Surveys
JUSTBED
Map unit labels in which all exposed bedrock and thinly covered bedrock are combined into a single bedrock unit, whereas the surficial-geologic deposits retain their original unit designations.
Alaska Division of Geological & Geophysical Surveys
RI2001-1_codeset.pdf
Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/RI2001-1_codeset.pdf
BX
Undifferentiated bedrock and thinly covered bedrock
Alaska Division of Geological & Geophysical Surveys
lake
Lake
Alaska Division of Geological & Geophysical Surveys
glacier
Glacier
Alaska Division of Geological & Geophysical Surveys
chubedcomp_arc.shp
Object type is vector, there are 397 rows associated with this entity, and the entity values refer to bedrock geologic map unit boundaries.
Alaska Division of Geological & Geophysical Surveys
chubedcomp_arc
CODE
Line symbols for contacts, defined as boundaries between geologic formations or other rock units.
Alaska Division of Geological & Geophysical Surveys, Alaska Division of Geological & Geophysical Surveys
0
Hidden line, defines the polygon boundary, but is not displayed on the map for aesthetic purposes
Alaska Division of Geological & Geophysical Surveys
4
Bounding box
Alaska Division of Geological & Geophysical Surveys
7
Contact inferred
Alaska Division of Geological & Geophysical Surveys
11
Fault
Alaska Division of Geological & Geophysical Surveys
12
***Note: the polygon having the software-defined attribute/column FID whose value is 318 should have a value of "11", corresponding to a line depicting a fault.***
Alaska Division of Geological & Geophysical Surveys
chubedcomp_polygon.shp
Object type is vector, there are 189 rows associated with this entity, and the entity values refer to bedrock geologic map unit polygons.
Alaska Division of Geological & Geophysical Surveys
chubedcomp_polygon
UNIT
Geologic bedrock map unit labels, any unit ending with a "?" indicates uncertainty
Alaska Division of Geological & Geophysical Surveys, Alaska Division of Geological & Geophysical Surveys
RI2001-1_codeset.pdf
Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/RI2001-1_codeset.pdf
CODE
Line symbols for contacts, defined as boundaries between geologic formations or other rock units.
Alaska Division of Geological & Geophysical Surveys, Alaska Division of Geological & Geophysical Surveys
0
hidden line, defines the polygon boundary, but is not displayed on the map for aesthetic purposes
Alaska Division of Geological & Geophysical Surveys
chuhflscomp_polygon.shp
Object type is vector, there are 35 rows associated with this entity, and the entity values refer to zones of hornfels (stipple) and inferred serpentinite (hatchure)
Alaska Division of Geological & Geophysical Surveys
chuhflscomp_polygon
UNIT
bedrock map unit labels
Alaska Division of Geological & Geophysical Surveys, Alaska Division of Geological & Geophysical Surveys
Amh1
Region associated with the unit "sp*", serpentinite near the surface, and is interpreted from aeromagnetic signatures
Alaska Division of Geological & Geophysical Surveys
HFLS
Hornfels are very dark gray to black, very fine to fine grained, hard, dense rocks with common disoriented crystals or rosettes of muscovite, biotite, and locally andalusite. Typically formed by contact metamorphism.
Alaska Division of Geological & Geophysical Surveys
RI2001-1_codeset.pdf
Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/RI2001-1_codeset.pdf
chuhflscomp_arc.shp
Object type is vector, there are 35 rows associated with this entity, and the entity values refer to boundaries of hornfels (stipple) and inferred serpentinite (hatchure)
Alaska Division of Geological & Geophysical Surveys
chuhflscomp_arc
CODE
Line symbols for contacts, defined as boundaries between geologic formations or other rock units.
Alaska Division of Geological & Geophysical Surveys
0
hidden line, defines the polygon boundary, but is not displayed on the map for aesthetic purposes
Alaska Division of Geological & Geophysical Surveys
5
contact
Alaska Division of Geological & Geophysical Surveys
7
contact, inferred
Alaska Division of Geological & Geophysical Surveys
chustructcomp_arc.shp
Object type is vector, there are 316 rows associated with this entity, and the entity values refer to types of faults.
Alaska Division of Geological & Geophysical Surveys
chustructcomp_arc
CODE
Line style coding of fault traces.
Alaska Division of Geological & Geophysical Surveys
11
fault
Alaska Division of Geological & Geophysical Surveys
13
inferred fault
Alaska Division of Geological & Geophysical Surveys
19
thrust fault, sawteeth on upper plate, user will need to see the Geologic Map of the Chulitna Region, Southcentral Alaska (Publication RI 2001-1A) for interpretation of relative plate motion
Alaska Division of Geological & Geophysical Surveys
23
inferred thrust fault
Alaska Division of Geological & Geophysical Surveys
QMQA
Quadrangle boundary
Alaska Division of Geological & Geophysical Surveys
0
hidden line, defines the polygon boundary, but is not displayed on the map for aesthetic purposes
Alaska Division of Geological & Geophysical Surveys
chucompstrsym_point.shp
Object type is point, there are 1102 rows associated with this entity, and the entity values refer to symbols for folds, anticlines, synclines, and bedding features
Alaska Division of Geological & Geophysical Surveys
chucompstrsym_point
CODE
Not known.
Alaska Division of Geological & Geophysical Surveys
Value assigned 1-782
STATION
Generic example of unique sample identifier or location of a geologic measurement: YrAAA999X: Yr=2 digit year of sample collection, AAA=geologist's initials (one to three characters), 999=unique station number, X=unique alpha character designating a sample was taken at the field station. Geologists' initials are: AM - Unknown, BG - B. Gage, BO - Unknown, BT - Unknown, DP - D. Pinney, JC - J. Clough, HA - Unknown, KC - K. Clautice, RB - R. Blodgett, RN - R. Newberry, RR - R. Reifenstuhl, SH - S. Haug, SL - S. Liss, SS - Unknown, MW - M. Werdon.
Alaska Division of Geological & Geophysical Surveys
Unique sample number designated by the author(s).
LONG
Longitude of sample location
Alaska Division of Geological & Geophysical Surveys
-150.02588
-149.11703
degrees
LAT
Latitude of sample location
Alaska Division of Geological & Geophysical Surveys
62.96763
63.28582
degrees
DIP
Degrees that a plane is inclined relative to horizontal, horizontal being 0 degrees, vertical being 90 degrees; always 90 degrees clockwise from strike
Alaska Division of Geological & Geophysical Surveys
6
90
degrees
ANGLE
Strike of plane using "Right-hand rule," where north is 0 and degrees increase clockwise to 360, always 90 degrees counter-clockwise from dip direction
Alaska Division of Geological & Geophysical Surveys
1
360
degrees
CLOCK
360 minus the strike of plane using "Right-hand rule"
Alaska Division of Geological & Geophysical Surveys
0
359
degrees
COUNTER
Same as the strike of plane using "Right-hand rule"
Alaska Division of Geological & Geophysical Surveys
1
360
degrees
TYPE
Not known.
Alaska Division of Geological & Geophysical Surveys
Value assigned 0, 1, 3, 4, 5
CODE
Point symbols for types of bedding and foliation orientation data
Alaska Division of Geological & Geophysical Surveys
1
Strike and dip direction of beds
Alaska Division of Geological & Geophysical Surveys
3
Strike and dip direction of beds, top of beds known from sedimentary features
Alaska Division of Geological & Geophysical Surveys
4
Strike and dip direction of overturned beds
Alaska Division of Geological & Geophysical Surveys
5
Strike of vertical beds, stratigraphic tops to north
Alaska Division of Geological & Geophysical Surveys
9
Strike and dip direction of foliation
Alaska Division of Geological & Geophysical Surveys
10
Strike of vertical foliation
Alaska Division of Geological & Geophysical Surveys
12
Strike and dip direction of cleavage
Alaska Division of Geological & Geophysical Surveys
13
Strike of vertical cleavage
Alaska Division of Geological & Geophysical Surveys
19
Strike and dip direction of joints
Alaska Division of Geological & Geophysical Surveys
20
Strike of vertical joints
Alaska Division of Geological & Geophysical Surveys
SHOW
Indicates whether or not the point is printed on the published paper map
Alaska Division of Geological & Geophysical Surveys
"Yes" - The point is printed or shown on the Geologic map of the Chulitna region, southcentral Alaska (Publication RI 2001-1B-SH1). "No" - The point is not printed or shown on the Geologic map of the Chulitna region, southcentral Alaska (Publication RI 2001-1B-SH1). A value of "No" may indicate that a duplicate value was measured nearby or the point was simply omitted at the discretion of the author(s).
chudikecomp_arc.shp
Object type is vector, there are 57 rows associated with this entity, and the entity values refer to dikes of undifferentiated composition
Alaska Division of Geological & Geophysical Surveys
chudikecomp_arc
CODE
Line symbols for dikes
Alaska Division of Geological & Geophysical Surveys
57
dikes
Alaska Division of Geological & Geophysical Surveys
chufoldcomp_point.shp
Object type is point, there are 26 rows associated with this entity, and the entity values refer to types of anticlines or synclines
Alaska Division of Geological & Geophysical Surveys
chufoldcomp_point
CODE
Point symbols for types of folds, anticlines, or synclines
Alaska Division of Geological & Geophysical Surveys
26
overturned syncline, showing direction of dip of limbs
Alaska Division of Geological & Geophysical Surveys
27
overturned anticline, showing direction of dip of limbs
Alaska Division of Geological & Geophysical Surveys
chufoldcomp_arc.shp
Object type is vector, there are 37 rows associated with this entity, and the entity values refer to line types for anticlines, synclines, and contacts
Alaska Division of Geological & Geophysical Surveys
chufoldcomp_arc
CODE
Line symbols for types of folds, anticlines, synclines, or contacts
Alaska Division of Geological & Geophysical Surveys
0
hidden line, defines the polygon boundary, but is not displayed on the map for aesthetic purposes
Alaska Division of Geological & Geophysical Surveys
5
contact
Alaska Division of Geological & Geophysical Surveys
34
fold axis, anticline or syncline
Alaska Division of Geological & Geophysical Surveys
chusample_point.shp
Object type is vector, there are 70 rows associated with this entity, and the entity values refer to types of rock suites or measured section location
Alaska Division of Geological & Geophysical Surveys
chusample_point
CODE
Point symbols used to define rock suite types or measured section locations
Alaska Division of Geological & Geophysical Surveys
32
filled triangle, Tertiary suite
Alaska Division of Geological & Geophysical Surveys
34
filled circle, Cretaceous suite
Alaska Division of Geological & Geophysical Surveys
64
open circle, measured section shown as figure in accompanying text report
Alaska Division of Geological & Geophysical Surveys
75
filled diamond, Cretaceous suite (altered)
Alaska Division of Geological & Geophysical Surveys
76
half-filled square, Cretaceous suite (probable)
Alaska Division of Geological & Geophysical Surveys
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
Natural Resource Technician
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
USA
907-451-5020
None available.
907-451-5050
dggspubs@alaska.gov
8 am to 4:30 pm, Monday through Friday, except State holidays
Please view our web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
Report of Investigation 2001-1B
The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.
Current publication is available on paper. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard.
Printed publication can be purchased for $16.00 (contact information below) plus shipping if mailed.
PDF
1.6
No compression applied
http://dx.doi.org/10.14509/2771
ArcGIS Shapefile
ESRI ArcGIS 9.x
No compression applied
http://dx.doi.org/10.14509/2771
CD-ROM
Joliet
Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files.
Order by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (http://www.dggs.alaska.gov/) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard.
Digital downloads: less than 30 minutes for most files. Offline CD/DVD-ROMs: 1-2 weeks unless special arrangements are made and an express fee is paid.
Please check the MapInfo web site (http://www.mapinfo.com/) for the latest documentation on importing ESRI shape files.
20080506
20080506
20090315
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
Metadata Manager
mailing and physical address
3354 College Road
Fairbanks
AK
99709-3707
USA
907-451-5039
907-451-5050
dggspubs@alaska.gov
8 am to 4:30 pm, Monday through Friday, except State holidays.
Please contact us through the e-mail address above whenever possible.
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
none
If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.