CANWELL GLACIER

CASTNER GLACIER

DENALI FAULT

BGT

HINES CREEK FAULT

MPF

DELTA RIVER

BLACK RAPIDS GLACIER

NENANA GLACIER FAULT

HINES CREEK FAULT

TRIDENT GLACIER FAULT

McGINNIS GLACIER FAULT

M cGIN NIS GLACIER

TRIDENT GLACIER

McGINNIS GLACIER FAULT

TRIDENT GLACIER FAULT

HINES CREEK FAULT

HAYES GLACIER

TRIDENT GLACIER FAULT

HINES CREEK FAULT

EAST FORK DELTA RIVER

GILLAM GLACIER

DELTA RIVER

HINES CREEK FAULT

WOOD RIVER FAULT

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^_

^_ ^_

^_

^_

101.8 Ma - Ho

93.2 Ma - Ho

92.6 Ma - Bi 95.5 Ma - Ho

94.9 Ma - Bi

95.3 Ma - Ho

93.8 Ma - Bi

97.6 Ma - Ho

96.1 Ma - Bi

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MH D6

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MH C6 MH C5

MH D5

MH C5 MH C4

MH B5 MH B4

Healy quadrangle Mt. Hayes quadrangle

Healy quadrangle Mt. Hayes quadrangle

CANWELL GLACIER

CASTNER GLACIER

DENALI FAULT

BGT

HINES CREEK FAULT

MPF

DELTA RIVER

BLACK RAPIDS GLACIER

NENANA GLACIER FAULT

HINES CREEK FAULT

TRIDENT GLACIER FAULT

McGINNIS GLACIER FAULT

McGINNIS GLACIER

TRIDENT GLACIER

McGINNIS GLACIER FAULT

TRIDENT GLACIER FAULT

HINES CREEK FAULT

HAYES GLACIER

TRIDENT GLACIER FAULT

HINES CREEK FAULT

EAST FORK DELTA RIVER

GILLAM GLACIER

DELTA RIVER

HINES CREEK FAULT

WOOD RIVER FAULT

RICHARDSON HIGHWAY

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Qaf

jcv

Qam

Qwm

Kbc

Qwm

Qoa

Qwf

Qaf

jcv

Kmo

jcv

Kmo

jcv

Qwf

Kmo

Kmo

Qwf

Kmo

Qwm

jcv jcv

jcv

piv

pis piv

aps

aps

Qam

aps

Kgd

aps aps

Qam

Qam

apg

mes

Qwm

Qwm

jcv

pis

piv

piv

Qam

pis pis pis

piv piv

piv

pis

pis

pis

pis

pis

piv

jcv

Qam

jcv

Qom

Qwm

jcs

jcs

jcs

jcs

Qom

jcv

pis

Qwm

Qam

jcs

jcv

jcv

jcs

jcv

pis

piv

pis

Qam

aps

aps

Kgd

piv

pis

pis

piv

piv

Qom

jcs

Qaf

jcs

jcs

Qaf

jcs

pis

Qwm

Qom

jcv

piv

pis

piv

pis

Qom

Qwm

Qog

Qaf

Qwm

Kgd

Qwm

jcs

Qog

Qog

Qog

Qoa

Qaf

Qwm

jcs

Qaf

wrs

Qaf

jcv

jcv

Qom

Qwm

jcv

Qaf

Qrg

jcs

Qwm

Qwm

Qwm

Qaf

Qwm

Qwm

Qwm

Qwm

Qwm

Qwm

Qwm

Qoa

Qaf

Qaf

jcs

aps

Qwm

aps

aps

Qam

Qam

Qam

mes

Qam

Qaf

Qam

Qwm

mes

Kqm

Kqm

Qwm

aps

Qaf

Qam

Qam

mgb

Qaf

Qaf

jcs

Qam

Qam

Qam

mgb

Qwm

Kqm

Qwm

Qoa

Kqm mes

Qam

wrs

Qwm

Qoa Qwm

Qam

jcs

Qwm

Qaf

Qoa

wrs

Kgd

wrs Qam

wrs

pimg

pimg

wrum

pimg

pimg

wrgb

pimg

pimg

pimg

pimg

pimg

pimg

pimg

pimg

pimg

pimg

pimg

pimg

pimg pimg

pimg

pimg

pimg

pimg

apmg

apmg

apmg

pimg

pimg

pimg

pimg

pimg

pimb

Qwm

Qoa

75

75 70

80

60

70

60

60

22

75

80

60

25

40

75

55

60 70

70 80

70

80

50 45

50

50

50

55

65

60 45

30

83

40

50

50

40

60

55

45

60

55

55

50

50 60

80

80 80

80

70

80

20

50

80

80

80

80

75

70

80

75 55

80 85

85

5

5

80

80

45

30

55

54

43

30

70

83

60

50

45

57

50

50

70

75 50

60

80

60 40

40

80

80

50

70

35 70

50

50

35

50

60

60

60 40

50

70

70

65

60

60 80

75

80

45

67

50

80 80

65 50

55

55

56

65

40

40

70

70

40

50

70

70

80

65

60 60

55

50 51

60

70

70

70 80

42 70 80

80 80

80

40

75

65

30

70

70

70 70

60

80

45 70

80

60

60

60

80

80

80

45

65

35

80

45

70

30 50

20

40

80

40

85

80

35 30

20

55

30

70

20

50

35

40

25 45

50 40

40 40

40

50

50

20

15

45

40 45

40 40

50 50

80

40

40

70

80

80

70

70

80

75

60

60

40

40

85

40

45

60

80

50

60

85

20

30

25

30

80

80

85

60

40

75

45

80

60

20

40

40

40 50

55

30

35

50

40

40

60

40

40

40

60

80 80

60

60

70

45 60

80

80 80

60

60

60

60

75

40

40 25

50

35

45

70

85

85

80

70 70

10

80

30

40

40

60

65

50

60

35

40

65

80

85 50

50

80

85

80

50

50

70

30

40

34

70

60

40

30

30

20

75

70

50

40

25

25

15

10

40 25 20

25

25

35

80

65

55 40

50

45

40

70

35

80 33 50

44

18 21

30 30

25

40

40

35

30

30 40

40

20

20

30

20 20

30

10

80

80

80

80

80

80

30

32

30

30

10

40

30

30

30

15

15 20

20

40

75

70 85

75

55

60

85

80

43

70

70

30

70

85 65

10

15

10

10 15 15

20

20 40 80

70

40

30 20 30

30 20

20 30

20

20

30

15

50

33

70

70

50

75

80

75

70

70

85

75

45

75

75

75

70

80

45

60

80 80

85

80

80

60

40

70

80

50

85

85 35

30 20

15

25

20

20

30

20

20

30

30

20

15

20

50

70 40

38

15

25

20

20 30

50 70

30 70

25

10

10

25

60

60

10

80

60

60

32

50

40

70 20

70

37

51

20

25

65

60

70

70

30

70

70

60

60

70

80 50

60

55

75

75

65 28

25

10

20

15

27

25

30

70

50

45

25

20

20

30

60

55

30

42

13

49

34

45

52

50 60

31

73

65

72

30

45

55

55

55

55

45

20

75

73

30

20

10

40

80

25

80

20

20

70

75

25

45

70

60

50

65

60

45

101.8 Ma - Ho

93.2 Ma - Ho

92.6 Ma - Bi 95.5 Ma - Ho

94.9 Ma - Bi

95.3 Ma - Ho

93.8 Ma - Bi

97.6 Ma - Ho

96.1 Ma - Bi

94.7 Ma - Zir

98.7 Ma - Zir

_^

^_ ^_

^_

^_

^_

^_

PORPHYRITIC

GRANODIORITE OF

VABM MARGANNE (Km)

LEUCODIORITE OF

BUCHANAN CREEK (Kbc)

0.50 mm 0.50 mm

jcs

jcs

jcs

pis

jcv

jcs

jcs

pis

piv jcv

Ts

Q om

Hines Creek Fault Trident G lacier Fault

McG innis G lacier Fault

V IE W LO O KING W E S T ALO NG HINE S CRE E K, TRIDE NT G LACIE R, AND 

M c G INNIS G LACIE R FAULTS

pim g

jcs

jcs

jcs Qom

Google Earth Image

pis Qom

pis

pis piv

piv

Hines Creek Fault

Trident Glacier Fault

piv

Trident Glacier

McGinnis Glacier

Mount Hayes

VIEW LOOKING WEST ALONG HINES CREEK AND McGINNIS GLACIER FAULTS

Quartz

Monzonite

(Kqm)

Canwell

Glacier

Moraine

(Qam)

Wrangellia

Terrane

(wrs) YukonTanana

Terrane

(jcs)

Hines

Creek

Fault

Denali

Fault

VIEW LOOKING EAST-SOUTHEAST ALONG CANWELL GLACIER 

DRAINAGE IN AREA OF MERGING HINES CREEK AND DENALI FAULTS

jcv

jcv

jcv

jcv jcv

Hines Creek Fault

VIEW LOOKING NORTHWEST ALONG HINES CREEK FAULT

piv piv

piv

pis

Ha y e s G la c ie r

E a s t Fork Little De lta Riv e r

jcs

jcs

jcs

jcs

aps

aps

Hines Creek Fault

VIEW LOOKING NORTHWEST ALONG HINES CREEK FAULT

pimb

Black Rapids Glacial

Moraine

Delta River

Kbc

jcv

jcv

jcv

jcv

Km

Km

Km

Km

Km

Hines Creek Fault

unamed fault

VIEW LOOKING WEST ALONG HINES CREEK FAULT

jcs jcs

Hines Creek Fault

Hayes Glacier East

piv

pis

jcv

jcv

Hines Creek Fault

Hayes G lacier 

V IE W LO O KING W E S T ALO NG HINE S CRE E K FAULT

piv

piv

40

35

93.2 Ma - Ho

Qi

Qa

Qc

Qaf

Qam

Qwf

Qrg

Qfl

Qoa

Qwm

Qom

Qog

Tn

Ts

Kbc

Km

Kmo

Kgd

Kqm

mgb

jcv

jcs

pimg

pil

pimb

pis

piv

apg

apmg

aps

wp

wa

wg

mes

mb

wrum

wrgb

wrs

m

LIST OF MAP UNITS

SURFICIAL UNITS

[See Description of Map Units (in pamphlet) for complete unit descriptions]

Icefield, glacier, and lesser unconsolidated deposits of Alaska glaciation (Holocene)

Alluvial deposits (Holocene)

Colluvial deposits and minor lateral moraine (Holocene)

Alluvial fan (Holocene)

Alaskan neoglaciation lateral and terminal moraine and glacial debris from Alaskan glaciation (Holocene)

Rock glacier (Holocene)

Fluviolacustrine deposits (Holocene)

Older, uplifted alluvium and minor lateral moraine (Holocene and Pleistocene)

Wisconsin stage glaciation lateral moraine (Holocene and Pleistocene)

Wisconsin stage glaciation glaciofluvial deposits (Holocene and Pleistocene)

Illionian stage or early Wisconsin stage lateral moraine (lower Pleistocene or upper Pliocene)

Drift of older glaciations (lower Pleistocene or upper Pliocene)

SEDIMENTARY UNITS

POST-ACCRETIONARY PLUTONIC ROCKS

Nenana Gravel (lower Pliocene to upper Miocene)

Sandstone, siltstone, and lesser conglomerate (Pliocene to Oligocene)

Leucodiorite and granodiorite of Buchanan Creek (lower Tertiary to Upper Cretaceous)

Porphyritic granodiorite of VABM Marganne (lower Tertiary to Upper Cretaceous)

Granodiorite of Molybdenum Ridge (lower Tertiary to Upper Cretaceous)

Unnamed granodiorite (Upper Cretaceous)

Unnamed granite (Upper Cretaceous)

YUKON-TANANA TERRANE

Metamorphosed gabbro and diabase (Upper Triassic)

Jarvis Creek Glacier Subterrane

Fine-grained metasedimentary rocks (Devonian and older)

Fine-grained schistose metavolcanic rocks and metasedimentary rocks (Upper Devonian)

PINGSTON TERRANE

Gabbro and lesser diabase of Mount Moffit (Cretaceous?)

Limestone, calcareous sandstone, and phyllite (Triassic)

Metabasalt (Triassic to Silurian)

Metasedimentary rock, chiefly phyllite (Triassic to Silurian)

Mafic to siliceous metavolcanic rock with lesser phyllite, metasiltstone, and chert (Triassic to Silurian)

AURORA PEAK TERRANE

Metamorphosed granitic rock (lower Tertiary to middle Cretaceous)

Metagabbro (lower Tertiary to middle Cretaceous)

High-grade metasedimentary schist and carbonate (Triassic to Silurian)

WINDY TERRANE

Phyllite, argillite, and minor metagraywacke and marl (Cretaceous)

Andesite, dacite, and volcanic graywacke (Cretaceous)

Metagraywacke and lesser phyllite (Cretaceous)

MACLAREN TERRANE

East Susitna batholith (lower Tertiary and Upper Cretaceous)

Maclaren Glacier metamorphic belt (Upper Jurassic?)

WRANGELLIA TERRANE

Ultramafic plutonic rock (Cretaceous to Triassic?)

Gabbro and metagabbro (Cretaceous to Triassic?)

Slana Spur Formation (Lower Permian to Middle Pennsylvanian) 

Contact—Solid where location is accurate; long-dashed where approximate

Fault—Solid where location is accurate; long-dashed where approximate; dotted where concealed

Thrust fault—Solid where location is accurate; long-dashed where approximate. Sawteeth on upper plate. 

Arrows show sense of relative motion

Strike-slip fault, right-lateral offset—Solid where location is accurate; long-dashed where approximate; dotted

 where concealed. Arrows show sense of relative motion

Fault abbreviations

 BGT—Broxson Gulch Thrust

 MPF—Meteor Peak Fault

Shear zone

Glacial limit or terminus—Long-dashed where location is approximate

Folds—Location approximate

Antiform—Formed in foliation and parallel schistosity

Synform—Formed in foliation and parallel schistosity

Bedding

Inclined—Showing strike and dip

Vertical—Showing strike

Fe-stained zone

Foliation and parallel schistosity

Inclined—Showing strike and dip

Vertical—Showing strike

Sample Locality—Isotopic age and analyzed mineral content. Bi, biotite; Ho, Hornblende; Zir, Zircon

.

Structural melange along Hines Creek Fault (Holocene to Paleocene)

A Cenozoic faulting observation site—See Cenozoic Displacement Along the Hines Creek Fault in pamphlet

 

 

TERRANES (NORTH TO SOUTH)

MÉLANGE

Richardson Highway

CORRELATION OF MAP UNITS

SURFICIAL UNITS

CENOZOIC

Holocene

[See Description of Map Units (in pamphlet) for precise unit ages]

Holocene and Pleistocene

lower Pleistocene or upper Pliocene 

Jarvis Creek Glacier Subterrane

Fault

SEDIMENTARY UNITS

lower Pliocene to upper Miocene

Pliocene to Oligocene 

POST-ACCRETIONARY PLUTONIC UNITS

MESOZOIC

lower Tertiary to Upper Cretaceous 

Upper Cretaceous

YUKON-TANANA TERRANE

Upper Triassic

Upper Devonian

Devonian and older

PINGSTON TERRANE

Cretaceous?

Triassic

Triassic to Silurian 

AURORA PEAK TERRANE

lower Tertiary to middle Cretaceous 

Triassic to Silurian 

MACLAREN TERRANE

lower Tertiary and Upper Cretaceous 

Upper Jurassic?

WINDY TERRANE

Cretaceous

Fault

Fault

Fault

WRANGELLIA TERRANE

Cretaceous to Triassic?

Lower Permian to Middle Pennsylvanian

Fault

TERRANES

MÉLANGE

Holocene to Paleocene

Qam Qrg

Qwf

Qi Qa Qc Qaf Qfl

Qoa Qwm

Qom Qog

Tn

Ts

Kbc Km Kmo

Kgd Kqm

mgb

jcv

jcs

piv

pimg

pil

pimb pis

apg apmg

aps

mes

mb

wp wa wg

wrum wrgb

wrs

m

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 http://pubs.usgs.gov/sim/3238/

Suggested citation: Nokleberg, W.J., Aleinikoff, J.N., Bundtzen, T.K., and Hanshaw, M.N., 2013, 

Geologic strip map along the Hines Creek Fault showing evidence for Cenozoic displacement in 

the western Mount Hayes and northeastern Healy quadrangles, eastern Alaska Range, Alaska: 

U.S. Geological Survey Scientific Investigations Map 3238, pamphlet 29 p., scale 1:63,360 

[http://pubs.usgs.gov/sim/3238/].

145°40'

145°50'

146°0'

146°10'

146°20'

146°30'

146°40'

147°10' 147°0' 146°50'

147°20'

147°30'

63°40'

63°50'

63°50'

147°30'

147°20'

147°10'

147°0' 146°50'

146°40'

146°30'

146°20'

146°10'

146°0'

145°50'

145°40'

63°40'

63°30'

63°20' 63°20'

150° W

156 W°

144 W°

60° N

64° N

0 250 500 KILOMETERS

Czs

Czs

Czs

Czs

Czs

Czs

Czs

Czs

CG

CG

CG

sf

sf

WR

WR

WR

WR

WR

ML AP

cn

ST?

om

om

om

MK

HINES CREEK FAULT AREA OF STRIP MAP

MK

YT

YT

SU

YT

YT

YT

Ks

at

at

at

kh kh

kh

at at

at

kh

kh

kh

kh

wr at

MY

DL

DL

PN

PN

PN PN

NX

NX

al

al

al

al

al

al

al

kw

kw

kw

WR

WR

WR

WR

WR

sf

PW

PW

PW PW

PW YAK

YAK

gg cn

WY

UM PN

WY

WY

CL

CO

CO

BR

BR

BR

BR

CO

DE

DE

DE

DL

CH

W-B

WY UM

0 500 KILOMETERS

Mainland Alaska

Area of figure

Early 

Late Cretaceous

Tertiary and 

Cretaceous

Early Cretaceous and Late Jurassic

Quaternary and 

late Tertiary

Cenozoic

OVERLAP ASSEMBLAGES

POST

MESOZOIC, SEDIMENTARY AND IGNEOUS ROCKS IN 

MAJOR SEDIMENTARY BASINS AND CONTINENTAL-MARGIN ARCS

-ACCRETIONARY, ON-LAND, CENOZOIC AND 

EXPLANATION

JURASSIC, CRETACEOUS, AND EARLY TERTIARY 

ACCRETIONARY-WEDGE AND 

SUBDUCTION-ZONE TERRANES

FAULT NAMES

CONTACTS AND FAULTS

, undivided sedimentary and 

lesser volcanic rock units

Czs

al, Aleutian; wr, Wrangell

 Alaska Range-Talkeetna Mountains;

 Coast-North Cascade; 

 Kuskokwim Mountains;

, Sanak-Baranov

at,

cn,

kw,

sf

gg,

kh,

 Gravina-Nutzotin-Gambier; 

 Kahiltna

Ks, 

om

Undivided sedimentary and lesser 

volcanic rock units

, Omolon

TURBIDITE BASIN TERRANES

MELANGE

ULTRAMAFIC AND MAFIC TERRANE

OCEANIC CRUST, SEAMOUNT,

AND OPHIOLITE TERRANES

Thrust fault

PASSIVE CONTINENTAL-MARGIN TERRANES

METAMORPHOSED CONTINENTAL-MARGIN TERRANES

ACCRETED ISLAND ARC TERRANES

ACCRETED CONTINENTAL-MARGIN ARC TERRANES

Chugach; Prince William; 

Yakutat

CG, PW, 

YAK, 

, Pingston; , West Fork and Broad PassPN W-B

WY, Windy

MK, McKinley; , Susitna SU

, Terrane of Ultramafic and 

Associated Rocks

UM

, Dillinger; , Mystic; 

, Nixon Fork

DL MY

NX

[For terranes with varying geologic history, 

pattern indicates dominant tectonic environment]

TECTONIC ENVIRONMENTS FOR TERRANES

YT, Yukon-Tanana

[Dominantly turbidites]

Strike-slip fault

Fault

Contact

CO

BR

DE

Contact

Border Ranges

Denali

ST?, Stikinia(?); Wrangellia WR,

AP, CL

ML

 Aurora Peak; , Clearwater; 

, Maclaren

MAP LOCATION

ALASKA

CONTOUR INTERVAL 200 FEET

SCALE 1:63 360

1 1/2 0 1 2 3 4 5 MILES

3000 0 3000

1 .5 0

6000

1

9000

2

12000

3 4

15000 18000

5 6

21000 24000

7 KILOMETERS

27000 FEET

APPROXIMATE MEAN

DECLINATION, 2013

Base from U.S. Geological Survey 1:250,000 Healy quadrangle, 1956 (minor 

revisions 1981); Mt. Hayes quadrangle, 1955 (minor revisions 1975)

Universal Transverse Mercator projection, Zone 6N; 1927 North American Datum

Geologic mapping and sampling by Warren J. Nokleberg, John N. 

Aleinikoff, and Ian M. Lange in 1978 to 1982, and by Warren J. Nokleberg 

and Thomas K. Bundtzen in 2009 and 2010. Additional compilation of 

geologic mapping from Wyatt G. Gilbert (1977), K.W. Sherwood and 

Campbell Craddock (1979), and Bela Csejtey and others (1992)

GIS database and digital cartography by M.N. Hanshaw, 2010

Edited by J.L. Zigler; digital cartographic production by R.D. Koch

Manuscript approved for publication November 29, 2012

For several tens of kilometers along the Hines Creek Fault, the 

metavolcanic unit of the Jarvis Creek Glacier subterrane (jcv) is thrust 

under and/or strike-slip faulted against the Pingston terrane (pis).

Along the Canwell Glacier, east of the Delta 

River, the Hines Creek Fault merges with the 

dextral-slip Denali Fault.

Along the McGinnis Glacier Fault, a unit of Tertiary sandstone (Ts) is 

structurally juxtaposed between units of the Jarvis Creek Glacier subterrane 

(jcs and jcv).

En-echelon fractures in soil and Qaf unit along the 

McGinnis Glacier Fault

Along this segment of the Trident Glacier Fault, Tertiary 

sandstone (Ts) is thrust under the metavolcanic unit of the 

Jarvis Creek Glacier subterrane (jcv).

Along this segment of the Trident Glacier Fault and along an unnamed 

subsidiary fault, Tertiary rocks (Ts and Tn) are faulted against the 

metavolcanic unit of the Jarvis Creek Glacier subterrane (jcv).

Along this segment of the Trident Glacier Fault, older lateral moraine 

(Qom) is thrust under the metavolcanic unit of the Jarvis Creek Glacier 

subterrane (jcv).

The leucodiorite of Buchanan Creek (Kbc) is faulted against a unit of metagabbro (mgb), granodiorite (Kgd), and the 

Jarvis Creek Glacier subterrane (jcv) along an unnamed fault. Both units are highly sheared along the fault and a thin 

unit of structural melange (too small to denote on the map) of various metasedimentary and metavolcanic rocks occurs 

along the northern boundary of the Jarvis Creek Glacier subterrane. To the south, along the Hines Creek Fault is a 

tectonic collage of structural melange (m), fault-bounded slices of granitic plutons (Km and Kgd), and the Pingston 

terrane (piv). 

2.6 m of dextral offset of the Richardson Highway along 

the Denali Fault during the November 2002 earthquake; 

370 km of dextral offset is interpreted for the Denali Fault 

in the Late Cretaceous and Cenozoic

Note the apparent dextral displacement of the course 

of major glacial valleys along the Hines Creek and 

Trident Glacier Faults.

Major melange zone along the 

Hines Creek Fault

Note the apparent dextral displacement of the course of 

major glacial valleys along the Hines Creek and Trident 

Glacier Faults.

Note the apparent dextral displace- ment of the 

course of major glacial valleys along the Hines 

Creek and Wood River Faults. 

The south-southwest-trending porphyritic granodiorite of 

VABM Marganne (Km) is not an extension of the leucodiorite of 

Buchanan Creek pluton but is a distinct, fault-bounded sliver 

juxtaposed along the south side of the Hines Creek Fault.

The leucodiorite of Buchanan Creek pluton (Kbc) is fine to medium grained with a low color index, contains abundant plagioclase and little to no K-feldspar, and 

is quartz-poor. In contrast, the porphyritic granodiorite of VABM Marganne (Km) is coarse to medium grained with a moderate color index, contains pink 

K-feldspar phenocrysts ranging to 2 cm diameter, and is quartz-rich. In addition to each pluton being compositionally homogeneous, these two distinct plutons 

are separated by a fault-bounded wedge of structural mélange (m), metavolcanic and metasedimentary rocks of the Jarvis Creek Glacier subterrane (jcv), and 

part of the Yukon-Tanana terrane.

THIN SECTION MICROPHOTOGRAPHS (Crossed Nicols)

A

I

E

F J

K G

B

C

D

H

INDEX MAP

1

U.S. Geological Survey 

2

Pacific Rim Geological Consulting

Geologic Strip Map Along the Hines Creek Fault Showing Evidence 

for Cenozoic Displacement in the Western Mount Hayes and 

Northeastern Healy Quadrangles, Eastern Alaska Range, Alaska

By

Warren J. Nokleberg1, John N. Aleinikoff1, Thomas K. Bundtzen2, and Maiana N. Hanshaw1

2013

U.S. Department of the Interior

U.S. Geological Survey

Scientific Investigations Map 3238

Pamphlet accompanies map