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LOCATION MAP
EXPLANATIONGranitic rocks of Kodiak batholithGranitic rocks of trenchward beltBasalt and gabbro of trenchward beltLocations and ages of geochronology samples—
Sample location numbers identify data in table 1U/Pb ageK/Ar and Ar/Ar ageRb/Sr ageZircon fission-track ageApatite fission-track agePlanktonic foraminifer age and source
Contact—Dashed where approximately located; dotted where concealed
Fault—Dashed where approximately located; dotted where concealed
Thrust fault—Dotted where concealed. Sawteeth on upper (tectonically higher) plate
Location of gravity transect—See figure 2 for gravity transect and model
41, 58.2 Ma
55, 58.9±0.2 Malower intercept
54, 62±9 Mawith 80–120 Mainherited zircons
57, 58.4±0.2 Ma
58, 58.5±0.1 Ma
52, 59.2±0.20 Ma51, 59.1±0.2 Ma
23, 43±2 Ma
21, 53±3 Ma
19, 48±8 Ma
14, 50±4 Ma
25, 72±8 Ma
24, 55±4 Ma
17, 59±5 Ma
22, 44±4 Ma
20, 40±5 Ma
18, 29±3 Ma
16, 34±2 Ma
12, 35±2 Ma
11, 32±2 Ma
10, 28±2 Ma8, 30±2 Ma
7, 25±2 Ma
41, 58.2 Ma
39, 58.1±1 Ma40, 57.1±1 Ma
47, 63±3 Ma
36, 62.6±0.6 Ma
35, 62.1±0.6 Ma34, 60.8±3 Ma
2, 58.3±0.2 Ma
1, 60.2±0.9 Ma
38, 164.7 Ma
56, 184 Ma
37, 59.5 Ma
42, 188±11 Ma
44, 193 Ma
43, 197±11 Ma
5, 150–120 Ma
27, 153±10 Ma
59, 218±5 Ma60, 216±8 Ma
45, 173 Ma30, 148±14 Ma29, 77±10 Ma32, 55±4 Ma
31, 55±6 Ma
6, 59.3±2.2 Ma50, 193±6 Ma
49, 189±13 Ma61, 204±8 Ma
48, 207±11 Ma
4, 58.3±0.3 Ma
28, 53±5 Ma
33, 61.9±2.9 Ma
46, 192 Ma
62, 212.87±0.19 Ma
53, 59.0±0.3 Ma
13, 49±3 Ma
9, 50±3 Ma
3, 57.3±2.5 Ma
55, 1.9 Gaupper intercept
26, 64±4 Ma
15, 34±2 Ma
Early Tertiary (Moore and others, 1983)
Paleocene (Nilsen and Moore, 1979)
Early Tertiary (Moore and others, 1983)
Map D
Map E
Map C
Kodiak Formation(Cretaceous accretionary rocks)
Map F
Map A
GRAVITY TRANSECT
Map B
KODIAK BATHOLITH
SH
EL
I KO
F S
TR
AI T
B O R D E R R A NG
ES
F AU
LT
S H U Y A K T H R U S T
UG
AN
I K T H
RU
S T
Ghost Rocks Formation(Paleocene accretionary rocks)
U
pper C
retace
ous ac
cretion
ary ro
cks (U
yak C
omple
x)
Triassic-Ju
rassic arc a
nd acc
retiona
ry rock
s
Triassic-Ju
rassic arc r
ocks
Oligocene and younger sedimentary r
ocks ALASKA
AREA OFMAP
PA
CI F
I C O
CE
ANK
OD
I AK
I SL
AN
D
AF
OG
NA
K
I SL
AN
D
K A L S I N B A Y F A U L T RUSSIA CANADA
56
70
70
45
71
56
88
61
71
59
71
5970
65
58
74
76
54
74
7166
55
84
66
81
46 86
46
77
6175
62
79
56
32
3075
71
85
81
60
78
52
75
70
74
8
54
85
85
59
61
73
72
80
82
70
25
84
70
Tsf
Tdp
TdpTdp
TdpQu
Tnc
Tnc
TcgQu
Qu
Tgrm
Tgrm
Tgr
Qu
Tpgs
Tpg
Tgrm
Tcg
Qu
Tgrm
Tgr
Tgr
Qu
Tpg
Kk
Tgr
Tgr
Tgr
Tgr
Tgrm
Qu
Tdp
7269
76 65
75
7188
8985
57
75
54
71
69
68
82
30
66
45
Qu
KktTgr
Tdp
Tgr
Kkl
Tpg
Kk
TgrKkt
KkTpg
Kk
Qu
Kk
Tcg
Sitkal idak Strai t
82
6068
74
4055
46
86
73
74
70
86
80
81
78
61
71
75
66
75
78
75
79
50
87
73
37
64
74
64
72
78
75
61
74
76
64
64
Tgr
Tgr
Tgr
Kk
Kk
Qu
Qu
KkKkt
Kk
Kk
Tgm
Kk
Qu
Tgl
Qu
Qu
Kk
Tgl
Qu
Qu
Kk
Qu
Kk
Tgl
Tgm
Tgl
Kk
Qu
Kk
Tgl
Kk
Tgm
33 5760
3478
39
68
25
25
64
68
5864
53 51
44
39
84
45
69
4054
45
5921
34
24
50
18
57
63
363564
7547
67
80
18
74
64
76
31
34
71
Tgl
Qu
Tglc
Kk
Kk
Kk
TglcQu
Tgl
Kk
Kk
15
64
2539
85
41
11
3330
28
33
4020
17
31
19
33
25
25
80
3129
Kk
Tgl
Kk
Kk
KkKk
Tgh
Tgl
Qu
Qu
Qu
Tgh
Qu
Tgh
Tgh
Tgm
Kk
Tgh
Tgl
Tgm
Tgl
Qu
Qu
Qu
Tgl
Kk
TglKk
Qu
Kk
Qu
Kk
Tgl
Tgm
Tgl
Kk
Kk
Kk
Kk
Kk
72
6560
6865
44
73
52
66
59
80
71
65 69
75
69
75
80
60
61
63
46
55
36
70
72
45
63
46
51
75
31
66
61
49
63
41
7171
64
58
71
81
59
74
40
63
78
65
5854
60
78
60
55
6474
76
38
26
62
61
55
64
47
63
2635
3578
70
48
505059
51
45
76
44
64
75
70
74
74
71
78
69
89
75
74
5660
85
87
75
74
70
64
71
73
49
6265
58
63
70
62
65
59
80
7572
72
73
70
67
79
7581
45 89
75
55
86
78
84
81
81
76
74
65
71
48
44
71
39
50
72
73
59
73
74
74
70
67
63
65
47
85
58
81
62
59
45
55
62
4580
60
503843
37
79
74
69
67
77
71
60 73
62
86
2080
84
30
50
15
60
45
70
55
4587
89
78
50
75
Tgl
Tgl
Ta
Ta
Ta
cordierite isograd
cord
ierit
e is
ogra
d
cord
ierite
isog
rad
cordierite isograd
garn
et is
ogra
d
cord
ierit
e iso
grad
garnetzone
biotitezone
biotitezone
biotitezone
biotitezone
cordierite zone
cordierite zone
biotitezone
cordierite zone
cord
ierite
isog
rad
B
B'
KODIAK BATHOLITH
KIZHUYAK BAYPLUTON
CROWN MOUNTAINPLUTON
KODIAK BATHOLITH
BA
Y
Te
rr
or
L
ak
e
A
A' KI
ZH
UY
AK
B A Y
cordieritezone
cordierite isograd
biotitezone
biotitezone
WHALE PASSAGEPLUTON
cordieritezone
biotitezone
cord
ierit
e iso
grad
cordieritezone
biotitezone
cordierite isograd
SHERATIN BAYPLUTON
ANTON LARSENBAY PLUTON
BA
Y
BA
Y
U
U
D
D
KALSIN BAY FAULT
KODIAK BATHOLITH
KODIAK BATHOLITH
cord
ierit
e iso
grad
cordieritezone
cordierite iso
grad
cordi
erite
isogra
d
Sitkal idak Is land
A
A'
KALSIN
BAY
FAULT
SITKALID
AK
PLUTO
N
UD
KALSIN
BAY F
AULT
UD
UD
UD
PASAGSHAK PLUTON
SHAFT PEAK PLUTON
angular unconformity
angular unco
nformity
DU
cordierite zone
1
EXPLANATION1 Moore (1967)2 Fisher and Byrne (1987)3 Sample and Moore (1987)4 Capps (1937)5 Moore and others (1983)
KODIAK
ISLANDSHELIK
OF STRAIT
PACIFIC
O
CEAN
5
2
3
4
INDEX MAP SHOWING SUPPLEMENTAL SOURCES OF GEOLOGIC MAPPING
57°
58° 154° 153°
D, 0
D, 0
Observed gravity value and errorCalculatedGr
avity
ano
mal
y (m
Gals
)
−20
−15
−10
−5
0
5
10
100 20 30Distance (kilometers)
Dept
h (k
ilom
eter
s)
10
5
0
Air
D, 0
D, 0
D, −100
D, 0
D, −100
D, 0
D, +100
D, 0
granitegranite
gabbro
granitehigh
inclusion granite /
granodiorite
D, 0
D, 0
D, −100
D, density anomaly in kg/m3
Kodiak Formation metasedimentary
rocks
Kodiak Formation metasedimentary
rocks
Kodiak Formation metasedimentary
rocks
D, 0
KALSIN BAYFAULT
Ghost RocksFormation
metasedimentaryrocks
NO VERTICAL EXAGGERATION
Figure 2. Gravity transect (A) and gravity model (B) across the Kodiak batholith (see fig. 1 for transect location). This model indicates that the Kodiak batholith is vertically extensive and extends downward for a minimum of 6 km. Densities are constrained by density measurements of the Kodiak batholith and surrounding rocks. Modified from Farris and others (2006).
A
B
NORTHWEST SOUTHEAST
KALSIN BAYFAULT
NO VERTICAL EXAGGERATION
A
Kk
Tpg
Kkl Tdp
Kkt
Tgr
1,000FEET
SEA LEVEL
−1,000
−2,000
−3,000
−4,000
−5,000
Tcg
A'
1,000FEET
SEA LEVEL
−1,000
−2,000
−3,000
−4,000
−5,000
B'
magmatic foliation
beddingbedding
KkKk
KkTgl
Tgl
Tgl
Tgm
Tgm
Tgh
Surficial units not shown NO VERTICAL EXAGGERATION
B
2,000
3,000
4,000
1,000
−1,000
−2,000
SEA LEVEL
FEET
2,000
3,000
4,000
1,000
−1,000
−2,000
SEA LEVEL
FEET
Surficial units not shown
A A'
magmatic foliationbedding
2,000
3,000
4,000
1,000
−1,000
SEA LEVELKk
TglKk
FEET
2,000
3,000
4,000
1,000
SEA LEVEL
FEET
NO VERTICAL EXAGGERATION−1,000
ABBREVIATED DESCRIPTION OF MAP UNITS
[See Description of Map Units (in pamphlet) for complete unit descriptions]
STRATIFIED ROCKSUndivided surficial deposits (Quaternary)—Unconsolidated sediments dominantly
composed of silt, sand, gravel, and glacial till. (Maps A–F)Narrow Cape Formation (Miocene)—Tan poorly cemented shallow-marine siltstones,
sandstones, and conglomerates that contain molluscan fossils and Kodiak batholith granitic cobbles. Bottom of unit contains coarse-grained conglomerate and breccia with clasts as much as 40 cm across derived from the underlying Ghost Rocks Formation. Above basal rocks, finer grained sandstone and siltstone is more common. (Map F)
Sitkalidak Formation (Oligocene and Eocene)—Dark-gray to black argillite and graywacke turbidites. Planar beds typically 10 to 50 cm thick. Thicker graywacke beds often contain argillite rip-up clasts. (Map F)
Ghost Rocks Formation (Paleocene)Mélange—Mélange zone at south edge of the Ghost Rocks Formation. Rocks range from
intensely folded and faulted beds of sandstone and shale to coherent sedimentary beds found only as isolated phacoidal structures surrounded by shale-dominated mélange. Rootless fold hinges and isoclinal folds common. (Map F)
Coherent strata—Light-gray, highly deformed sandstone and shale. Graywacke beds tend to be coherent with open short-period folds. Soft-sediment deformation prevalent through-out. Shale-rich layers not as common, but typically more deformed and sometimes with mélange texture. Beds are typically 10 to 20 cm thick and as thick as 1 to 2 m. In addition, rocks are intruded by basaltic dikes and small granitic and gabbroic plutons, which range in age from 63 to 60 Ma. (Maps D–F)
Kodiak Formation (Cretaceous)—Argillite and graywacke turbidites structurally repeated many times by thrust faults. Beds range from 5- to 10-m-thick massive graywacke to 5- to 10-cm-thick rhythmically bedded argillite. Argillite-rich sections are almost black, whereas the graywacke is dark gray. (Maps A–F)
Hornfels—Sheared hornfelsic argillite and graywacke of the Kodiak Formation along the Kalsin Bay Fault. Metamorphic cordierite and biotite present. (Maps D, E)
Leucocratic dikes—Highly disrupted and sheared Kodiak Formation intruded by leuco-cratic dikes. Unit located between gabbro and granite bodies on Sitkalidak Island. (Maps D, E)
IGNEOUS ROCKSKodiak batholith (Paleocene)—Elongate body of biotite granite, granodiorite, and tonalite
that extends along the mountainous axis of Kodiak Island. Includes main body and compositionally similar satellite plutons that surround it (map D). This informal unit is further subdivided based on amount of partially assimilated host-rock inclusions. Ranges in age from 59.2±0.2 Ma at the southwest end to 58.4±0.2 Ma at its northeast tip (Farris and others, 2003, 2006)
Aplite dikes—White to tan, fine-grained quartz and potassium feldspar aplite dikes, 1 cm to 10 m wide, which intrude high-inclusion unit (Tgh) of Kodiak batholith. (Map A)
Low-inclusion unit—Medium-grained (0.5 to 1 cm) biotite granite and granodiorite containing quartz, potassium feldspar, plagioclase, biotite, and ilmenite. Rocks have low percentage of host-rock inclusions. Sillimanite xenocrysts are rare or absent, unlike medium- and high-inclusion units (Tgm, Tgh). Near pluton margin, muscovite and relatively unaltered host-rock xenoliths are present. (Maps A–D)
Medium-inclusion unit—Biotite-rich granodiorite and tonalite containing as much as 5 to 10 percent partially assimilated host-rock material composed of 1- to 15-cm quartz clots, 1- to 30-cm biotite aggregates, 1- to 10-cm sillimanite xenocrysts, and 5- to 50-cm metamorphosed host-rock xenoliths. Andalusite, kyanite, and garnet xenocrysts also present, but less common than sillimanite. (Maps A, D)
High-inclusion unit—Biotite-rich granodiorite and tonalite containing 10 to 50 percent partially assimilated host-rock material consisting of 1- to 15-cm pure quartz clots, 1- to 30-cm biotite aggregates, 1- to 10-cm sillimanite xenocrysts, and 5- to 50-cm altered host-rock xenoliths. Andalusite, kyanite, and garnet also present. Rocks contain 20 to 40 percent biotite and appear as mixture of highly metamorphosed host-rock fragments and biotite-rich granite. (Map A)
Leucocratic muscovite-bearing granite—Leucocratic muscovite-bearing, biotite-poor granite. Rare garnet. Muscovite concentration increases with proximity to host-rock blocks. Biotite present in schlieren, which generally parallels blocks of host rock. Host-rock blocks are common, in various stages of disaggregation, and typically fragmented along bedding planes. Quartz-filled miarolitic cavities also present. (Map C)
Trenchward belt (Paleocene)—Informal group of units of Paleocene igneous rocks along and south of Kalsin Bay Fault. Composed of small granitic and gabbroic plutons; dikes of porphyritic gabbro, basalt, and andesite; and pillow basalt. Most rocks intrude the Ghost Rocks Formation and range in age from 60 to 63 Ma (Moore and others, 1983); however, some are interbedded with the Ghost Rocks Formation strata (Plumley and others, 1983; Moore and others, 1983)
Biotite-rich granodiorite—Biotite-rich, clinopyroxene-bearing granodiorite and tonalite. Clinopyroxene phenocrysts partially resorbed and altered to biotite. Mafic minerals variably range from 1 to 25 percent. Clinopyroxene increases in abundance with proxim-ity to gabbroic pods, which can be as much as hundreds of meters across. Larger (1–5 mm) plagioclase phenocrysts commonly surrounded by matrix of granular, intergrown quartz and alkali feldspar. (Maps E, F)
Granodiorite and granite with voluminous stoped blocks—Granodiorite and granite that contain greater than 25 percent stoped blocks by volume. Host-rock blocks of the Ghost Rocks Formation range to 5 m across and have dark reaction rims and can be visually reassembled like puzzle pieces. Block margins are sharp to gradational. Where host-rock block concentrations are highest, the granite is most leucocratic and composed almost entirely of quartz, potassium feldspar, and host-rock remnants. (Map F)
Porphyritic gabbro—Porphyritic clinopyroxene–plagioclase gabbro. Plagioclase phenocrysts, 1 to 2 cm in diameter, form a framework filled with smaller, intergrown clinopyroxene and plagioclase grains. Commonly intruded into the Ghost Rocks Forma-tion as thick 10- to 50-m-wide dikes that fine upward. Upper dike sections almost entirely devoid of large plagioclase and may grade into basalt. Equigranular and coarser grained in Pasagshak Pluton and on Sitkalidak Island. (Map F)
Fine-grained basalt—Very fine grained basalt to andesite dikes and pillows typically altered to greenstone with common calcite veins. Rarely visible clinopyroxene phenocrysts. Pillows may show hyaloclastite fragments. Basalt dikes, 20-cm- to 20-m-wide, may show baked margins, grade into pillows, and crosscut mélange features in the Ghost Rocks Formation. In the Pasagshak Bay area, 40Ar/39Ar dating on a 3-m-wide dike yielded an age of 60.15±0.86 Ma (Farris, 2010). (Maps E, F)
EXPLANATION OF MAP SYMBOLSContact—Solid where location is certain; dashed where inferred (labeled where angular
unconformity); dotted where concealedFaults—Solid where location is certain; dashed where inferred; dotted where concealed
Normal fault—U, upthrown side; D, downthrown side. Arrow pair shows relative motion. Long arrow shows bearing and plunge of lineation
Strike-slip fault—Arrows show relative horizontal movement
Right lateral
Left lateral
Unit Ta dike
Unit Tgl dike
Folds—Solid where location is certain; dashed where approximate. Showing trace of axial surface and direction of plunge where appropriate
Anticline
Syncline
Overturned syncline
Metamorphic isograd—Dashed where inferred
Strike and dip of bedding—In sedimentary and metasedimentary rocksInclined
Vertical
Strike and dip of foliationMagmatic foliation
Foliation in metamorphic and sedimentary rocks
Strike and dip of cleavageInclined
70
70
70
70
UD
Qu
Tpg
Tnc
Tsf
Kk
Tpgs
Tgrm
Tdp
Tcg
Tgr
Kkt
Kkl
Tgl
Ta
Tgh
Tglc
Tgm
Kkt
Kk
Tgrm
Tnc
Tsf
Kkl
Tgr
Ta
Qu
TdpTcgTpg Tpgs
Tgl Tgm Tgh Tglc
STRATIFIED ROCKS IGNEOUS ROCKS
Eocene
Miocene
Oligocene
QUATERNARY
TERTIARY
Paleocene
LateCretaceous CRETACEOUS
CORRELATION OF MAP UNITS
[See Description of Map Units and table 1 (in pamphlet) for precise unit ages]
Unconformity
CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
MAP A. KODIAK BATHOLITH NEAR TERROR LAKE
Geologic mapping from Moore (1967) compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003
Topographic base from U.S. Geological Survey, Kodiak D-3, 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984
MAP B. WHALE PASSAGE PLUTON
Geologic mapping from Capps (1937) and Moore (1967), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003
Topographic base from U.S. Geological Survey, Kodiak D-2 and D-3, 1947 (revised 1978) Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984
MAP C. ANTON LARSEN BAY PLUTON
Geologic mapping from Moore (1967) and Moore and others (1983), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003
Topographic base from U.S. Geological Survey, Kodiak A-5, 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984
Geologic mapping from Moore (1967), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003
Topographic base from U.S. Geological Survey, Kodiak A-4, 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984
Geologic mapping from Moore (1967) and Fisher and Byrne (1987), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003
Topographic base from U.S. Geological Survey, Kodiak B-1, C-1, and C-2 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984
MAP F. TRENCHWARD BELT INTRUSIVE ROCKS NEAR PASAGSHAK BAY
Geologic mapping from Moore (1967) and Moore and others (1983), compiled with additional work by David W. Farris and Peter J. Haeussler in 2001, 2002, and 2003Manuscript approved for publication September 23, 2019
Topographic base from U.S. Geological Survey, Kodiak C-3, C-4, D-3, and D-4 1947 (revised 1978)Universal Transverse Mercator projection, zone 5, 1927 North American datum, datum shifted to WGS-1984
MAP D. KODIAK BATHOLITH AT THREE SAINTS BAY
MAP E. SITKALIDAK PLUTONAT SITKALIDAK STRAIT
Figure 1. Map of Kodiak Island showng the Kodiak batholith, other Paleocene intrusive rocks, regional structures, location of gravity transect, geochronology sample locations, and pluton map locations. See figure 2 for gravity transect and model.
57°35'
57°45'
153°06' 153°00' 152°54'
57°40'
57°45'
153°06' 153°00' 152°54'
57°40'
57°35'
57°52'
152°45'
152°50'
57°56'
152°45'
57°56'
152°50'
57°52'
152°40' 152°36'
57°51'
57°54'57°54'
152°36'152°40'
57°51'
57°09'
57°06'
57°03'
57°12'
153°35' 153°30' 153°25'
57°03'
57°06'
57°09'
57°12'
153°35' 153°30' 153°25'
153°14'31"57°14'26"
153°09'26"57°14'26"
153°09'26"57°10'51"
153°14'31"57°10'51"
57°12'
57°14'
57°12'
57°14'
153°12"
153°12"
153°37'34"57°14'42"
153°20'28"57°14'42"
153°20'28"57°02'37"
153°37'34"57°02'37"
152°43'45"57°56'05"
152°34'37"57°56'05"
152°34'37"57°49'50"
152°43'45"57°49'50"
152°54'52"57°57'31"
152°43'13"57°57'31"
152°43'13"57°57'31"
152°54'52"57°50'44"
153°10'17"57°48'53"
152°50'10"57°48'53"
152°50'10"57°30'03"
153°10'17"57°30'03"
57°30'
57°27'
57°33'
152°30' 152°25' 152°20'
57°27'
57°30'
57°33'
152°30' 152°25' 152°20'152°33'45"57°34'05"
152°17'35"57°34'05"
153°17'35"57°34'05"
152°33'45"57°24'50"
57°00'
57°30'
58°00'
154°00' 153°00' 152°00'155°00'
CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
CONTOUR INTERVAL 100 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government
This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map.
For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1–888–ASK–USGS
Digital files available at https://doi.org/10.3133/sim3441
Suggested citation: Farris, D.W., and Haeussler, P.J., 2020, Selected geologic maps of the Kodiak batholith and other Paleocene intrusive rocks, Kodiak Island, Alaska: U.S. Geological Survey Scientific Investigations Map 3441, pamphlet 10 p., scale 1:50,000, https://doi.org/10.3133/sim3441.
ISSN 2329-132X (online)
https://doi.org/10.3133/sim3441
Selected Geologic Maps of the Kodiak Batholith and other Paleocene Intrusive Rocks, Kodiak Island, AlaskaBy
David W. Farris1 and Peter J. Haeussler2
2020 1East Carolina University 2U.S. Geological Survey
U.S. Department of the InteriorU.S. Geological Survey
Scientific Investigations Map 3441Pamphlet accompanies map
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