A

A'

87 

80

80 65

75

65

83

68 82

85 85

20 16

17

12

10

9

7

7

45

70 75 

12 

7 12 

3

26 

75 

58 25 43 

80 

52 

25 

23 

36 

80 

15 

2

23 

15

12

32

12

10

35

37

12

60

20

85

75

67

75

72

54

70

10

2 

65 

72

10 65 

25

40 50

35 65 84 

60 16

20

85 

35 

20 82 

10 

10 

3

5 

10 

60

10 

10 10

8

75 

70 

75 

70 

68 

55

5 70

6

55

86 

83 

83 

80 80 

79

52

72 10

15

20

20

8

25

10

5

8

12

50 10

35 30

5 

28

15

24

18

5

8

5

7

6 10

12

5

10

30

45

60 75 

75 

75 

76 70 

65 

43 

80

70

70

70

53 

45 

80 

87 

73 

54 85 52 

60 65 

67 

65 

89 

44 

70 

45 

70 87 

50 

60 

48 

65 

80 

80 

80 

80

75 

68 

59

73 

5

10 

10 

10 

30 

12 

10 

10 12 

70 

20 

45 

5 

17 

10 

12 

5 

14 

6 

7 

6 

6 

5 

6 

5 

75

70

70

72

65 

50

21

25

6

40

30 15 

85 75 

75 

86 78 

80 

63 

69 

10 

60 

23 

4 

40

35

23

40

72 75 

80 

12 

5 

18 

85 

65 

65 

4 82 

12

40

50

78

74

70

75

79

78

50 55

50

20

21 

10

5

50

57

60 65

80

85 87

33

88

88

85

37

8

30

40

45

80

46 42

40

40

60

83

60

75

20

10

36 35

35 40

32

37

34

15 2 15

18

50

10

15

16

3

7

65 15

25

20

34

25

34

21

22

25

18

20

13

13

15

24

13

22

30

23

28

13

11

28

23

13

13

20

26

12

30

32

28

23

18

10

13

22

8

8

7

3 32

7

14

12

25

12 12

26

85 15

12

10

5

30

28

25

50

70

75

70

65

30

70

75

75

80

80

80

40

40

85

45

65

85

70

60

70 70

75

70

28

60

40 82

60

80

85

65

75

70

75

70

70

70

77 80

75

80

33

80

55

85

52

10

82

70 75

60

75

80

80

60

60

75

80

10

81

64

50

50

75

7

5

3

13

17

13

12

12

14

5

7

3

6

9

4

11

12

10 5

20

6

17

10

5

7

17

15

13

8

39

5

5

6

25

10

3

10

30

10

13

15

10

10

18

11

20

20

10

10

15

20 20

30 30

25

33

22

23 11

15

11

18

12

15

14

10

14

16

25

29 22

18

35

30 30

35

17

39

21

15

13 18 18

15

14

15 13

15

14

14

8

15

80

70

80

19

77

84

75

15

15

50

10

25

49

88

13

22

45

27

16

25

20

21

15

32

26

11

10

8

5

12

7

10 20

12

18 10

11

15

16

15

12

10

15

17

13

13

19

19

25

25

34

31

15 10

12

20

5

8

16

27

31

38

13

27 10

12

12 12

11

18

6

8

8

8

6

8

4 6

15 22

36

30

80

75

60

20

28

28

32

8

8

8

9

8 8

5

14

6

6

6 9 8

2

2

8

6 10

10

10 20

30

43

67

43

22

30

20

50

47

24

12

10

10

7

12

5 14

10

13

9

3

7 6

7

10 60

70

50

55

20

10 10

12 12

10

20

7

7

6

8

80

15

25

18

20

18

2

4

4 6 11

11

4

9

12

12

14

8 19

10

76 14

1086

11 13

16

72

12

12

14

17

18

14 14

16

14

9 10

7

8 8

3

5

12

4

5

5

4

4

5

5

5

8

8

5

8

22

13

13

11

23

10

14

12

15

10

17

15

15 5

7

5

3

9

4

8

15

22

27

10

12

4

10

12

2

11

15

15

45

5

5

12

48

8

30

48

9

23

5

5

5

13

12

42

70

80

80

85

60

75

70

30

75

75

75

75

60

80

80

84

86

70

4

8

70

67 80 52

55

5 82

3

28

32

30

10

5 5

7

60

75

48

85

45

36

33

26 51

58

50

60

75

45

42

15

37

50

70 35

78 73

60

45

58

79

48

52

35

23

70

15

30

32

28

52

14

8

9

40

74

18

12

28

12

18

16

83

85

60

54

52

50

50

80

80

41

59

80

47

72

73

60

7

74

86

50

34

20 10

2

53 74

20

10

29

21

27

21 10

23

32

12

10

18

8

23

32

25

28

35

35

44

19

33

23

63

21

23

43

12

52

34

15

21

12

17

24

32

15

47

76

34

50

38

72

BLUE

RIVER

NORMAL

FAULT

ZONE

GORE

FAULT

ZONE

WILLIAMS

RANGE

THRUST

UTE

PASS

SYNCLINE

60

BURNS

SYNCLINE

BLUE

RIDGE

ANTICLINE

af

af

af

af

af

af

af

af

af

af

af

af

af

af

af

Qa

Qa

Qa

Qa

Ql

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qfo

Qa

Qa

Qc

Qc

Qc

Qc

Qc

Qc

Qac

Qc

Qc

Qc

Qc

Qdf

Qdf

Qc

Qc

Qc

Qc

Qc Qc

Qc

Qc

Qc

Qc

Qc

pgs

pgs

pgs

Xb

Xb

Xb

Jm

Jm

Jm

Jm

Jme

Jme

Jm

Jm

Jm

Jm

Jm

Jm

Jm

Jm

Jm

Ql

Ql

Ql

Ql Ql

Ql

Ql

Ql

Ql

Ql

Ql

Ql

Ql

Ql

Ql

Ql Qly Ql

Qt

Qtp

Qtp

Qtp

Qtp

Qtp

Qtb

Qtb

Qw

Qw

Qtp

Qmd

Dd

Dp

Dp

Dp

Ql

Ql

Ql

Qt

Qt

Qr

Ql

Ql

Ql

Ql

Ql

Ql

Ql

Qg3

Qg3

Qg4

Qg2

Qg3

Qg3

Qg3

Qg4

Qg3

Qac

Qac

Qac

Qac

Qac

Qac

Xt

Xt

Xgb

Xgr

Xgr

Xc

Xc

Xgr

Xgr

Xt

Xgr

Xt

Kd

Kd

Kb

Kd

Kd

Kn

Kd Kn

Xgg

Xh

Xh

Xf

Kb

Kn

Kb

Kb

Kb

Kb

Kb

Kb

Kb

Kb

Kpls

Kpls Kpls

Kpls

QNl

QNl

Nbp

Nbp

Nbp

Nbp

Nbp

Nbp

lt

lt

lt

Kpsh

Kpsh

Kpsh

Kpsh

Kpsh

Xgr

Xm

Xm

Xm

Xm

Xm

Xm

Xm

Xm

Xm

Xd

Xm

Xm

Kd

Kn

Xm

Xm

Xm

Nt

Nt

Nt

Qp

Qp

Qp

Qp

Qp

Qc

Qc

Qc

Qp

Ng

Kn

Ng

Ng

Ng

Kpk

Kph

Kph

Kph

Kph

Qg1

Qg1

Qac

Qac

Qac

Nt

Nt

Ql

Ql

Ql

Kmu

Ng

Ng

Ng

Xd YXp

YXp

Xsb

Xsb

Xbh

Xbh

Xh

Qtp

Qtp

Qtp

Qtp

Xgg

Xc

Xc

Xf

Qtp

Qtb

Qtp

Qtp

Qtp

Qtp

Qtb

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtb

Qtb

Qr

Qt

Qtb

Qtb

Qfy

Qfy

Qfy Qtb

Qfy

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Qtp

Ql

Ql

Ql

Ql

Xq Ql

Ql

Qc

Ql

Ql

Ql

Ql

Ql

Qfy

Qfy

Qfy

Qfy

Qfy

Qfy

Qfy

YXp

Qg1

Qg1

Qg3

Ql

QNd

Ql

Qg4

Kpl

Kpl

Kpl

Kn

Kn

Kn

Kb

Kn

Qt

Qt

QNl

QNl

QNl

QNl

Kp

Kps

Kp

Kd Kd

Kd

Kpls

Kpls

Kpls

Kpls

Kpls

Qfo

Qfo

Qfo

Qfo Qdf

Qfo

Qg1

Qg2

Qg4

Qg1

Qg1

Qg1

Qg1

Ql

Ql

Ql

Ql

Qac

Qa

Ql

Ql

Ql

Ql

Ng

QNd

QNd

QNd

QNd

Qtb

Qtb

Qtb

Qtb

Qtb

Kn

Kn

Kd

Qp

Xgr

Xgc

Xgc

Xgc

Xgc

Qc

Qc

Xgc

Xgc

Xgc

Xgc

Qpg

Qpg

Qpg

Qpg

Qt

Qdy

Qdy

Qt

Qt

Qt

Qt Qr

Qr

ps

ps

cg

ps

pgs

Kd

Kn

Kn

Kn

Kb

Kp

Kp

Kd

Kd

Kd

Kd

Kd

Xd

Xd

Xm

Xd

Qc

Qc

Qc

Ql

Qbf

Ql

Ql

Ql

Ql

Ql

Ql

Ql

Qc

Qc

Qc

Qc

Qc

Qc

Qc

Qc

Qc

Qc

QNd

Qc

Qc

Qc

Qc

Qc

Pm

Pm

Pm

mm

mm

mm

mm

m

ml

ml

ml

mr

mr

mw

mw

mr

mr

m

ms

mw

m

m

m

mw

mw

Pm

Pm

mu

Pm

m

mu

mu

mu

mu

mu

Qw

Qw QNd

QNd

Nst

Qpg

YXp

YXp

Qg1

Xgc

Xm

Xm

Xgc

Or

Or

Or

s

s

s

s

Or

MI

MI

Qac

Qac

Qac

Qac

Qac

Qac

Qac

Ql

Ql Qt

Qac

Xd

Xd QNmg

QNmg

Xgg

Xh

Xm

Xm

Xm

Xh

Xc

Kd

Xgr

Xgc

Xgc

YXp

Xgr

Qt

Qr

Xgr

Xgr

Xh

Xq

QNd

QNd

Kpls

Kpls

Kpls

Breccia

QNmg

Qa Qg1

ms

Kpl

Qc

Qc

Qc

Qfy

Kd QNl

Kb

Qg3

Qg1

Qg1

Kp

Xm

Kpsh

Kpk

Kbd

Kp

Kn

Xgg cm

Jme

Jme

c

Ng

Ng

Qw

Frisco

Vail

Kpp

Kpp

cd

Nbd

i

Nbd

Nbd

Nbd

i

i

i

i

i

i

i

i

i

ms

ms

ms

ms

ms

lt

cd

i

lt

lt

lt

Xq

Z

T

V R

U

Y

C

B

S

G and H

A

D

DD

Z

T

C

V R

U

Y

HH

B

A

G and H

AA

K

P

W

X

J

L

M

FF F

I

EE

CC

GG

BB

N and O

E and Q

AA

K

P

W

X

J

L

M

FF F

I

EE

CC

GG

BB

N and O

E and Q

Xm

Xd

Ng Xgr Xgr

Xsb

af Qtp Qtb

Nt

Xm

Xm

Xm

Kpsh

Kpls

Kpsh

Kpl

Kph

Qg1 Qa Qtb QNd Kp QNd

Xgc 

Xm

Xm

Xm

Xgc

 Xgc 

Qt

Xm

Xm

Xgc

Qtp Ql Qtp mr

mr mr mm

ml

mu

mw

mw

Ql Ql

Kn

Kn Kd

Kmu

Kb Kd Jme

c

YXu

YXu Kn

Kn

Kb

Kb

Jme Kd

c

YXu YXu

s

s

s

Or 

Dp Dd Ml

Mg Mg

QNd b

Qtp Qtp

Kpp

2,000

3,000

4,000

1,000

0

METERS

2,000

3,000

4,000

1,000

0

METERS

A A'

WILLIAMS RANGE

THRUST

BLUE RIVER

NORMAL FAULT ZONE

GORE FAULT

 ZONE

Xgc Qc Qfy

Dp

Surficial deposits simplified in places

GORE RANGE FRONT RANGE

Dp

Ql

SAWATCH RANGE

Eagle River

Gore Creek

Blue River

Williams Fork

Keyser Creek

Ute Pass syncline

Surficial deposits (Quaternary)—East side Gore Range only

Basin-fill deposits (Miocene and Oligocene—Including

Troublesome and Browns Park Formations

Mafic volcanic rocks (early Miocene and Oligocene)

Intrusive rocks (early Oligocene and Eocene)

Middle Park Formation (Paleocene and Upper? Cretaceous)

Mesozoic sedimentary rocks

Paleozoic sedimentary rocks

Silver Plume Granite (Mesoproterozoic; 1,424±6 Ma)

Plutonic and metamorphic rocks (Paleoproterozoic)

Qu

Tb

Km

u

u

Xu

Ys

Ti

Tv

0 5

5

10

10

15

15

20

20 MILES

25 30 KILOMETERS

0

Contact

Fault—Dotted where concealed

Normal fault—Bar and ball on downthrown side; dotted

where concealed

Thrust or reverse fault—Teeth on hanging wall; dotted

where concealed

Anticline

Syncline

Overturned syncline

Ductile deformation fabric

Interstate highway 70

Water body 

70

Qu

u

u

u

u

u

u

Ti

Xu

Km 

Xu

Tb

Tb

Tb

Xu

Tv

Tb

Ys

u

Xu

Xu

Xu

Xu

Xu

Ti

Ti

Ti

Ti

Ti

Ti

Tv

Tv

cu

u

Xu

Km 

Ti

Tb 

u

u

u

u

Tv

Ys

u

u

Ridge anticline

Burns syncline

Mosquito

Gore fault zone

Gore fault

Blue River 

normal 

fault

Blue

Kremmling

fault

REGIONAL STRUCTURE MAP

GE

NGENG

ANGAN

RAN

E

R

RE

R

RE

OR

GO

TCH

ATCH

AWATAWAAW S

GE N AG

RA

Williams

Range

thrust

Williams 

Blue 

Blue River

Blue 

Eagle

River Gore

Creek

Piney

River

COLORADO

RIVER

COLORADO

RIVER

Swan River

Tenmile

Creek

Eagle

River

zone

Fraser

basin

GE

NGENG

RANGR

T

R

T NOT NOR

NT

FR

River

Williams Fork

Reservoir

Fork

Green Mountain

Reservoir

River

Mount Bross

Fault

Granby

basin Granby Hot Sulphur Springs

Frisco

Dillon

Vail

Breckenridge

Red Cliff

 Minturn

Silverthorne

Dillon

Reservoir

Generalized regional structure map of the east half of the Vail 30' × 60' quadrangle and the surrounding area. Mapped part of 

Vail quadrangle shown with a yellow outline.

40°00’

106°30’ 106°00’

39°30’

EXPLANATION

70

70

zone

zone

Snake River

1 2

4

5 6 7

8 10 11 

12 

17 

12

12

13

14

15

16

3

INDEX TO SOURCES OF GEOLOGICAL DATA

9

1. Taggert (1962); Tweto (1973a); K.S. Kellogg

and R.R. Shroba, unpub. mapping, 2007–2008

2. Tweto and Reed (1973); R.R. Shroba

and K.S. Kellogg, unpub. mapping, 2007–2008

3. Tweto and Lovering (1977); K.S. Kellogg, unpub.

mapping, 2007–2008

4. K.S. Kellogg, unpub. mapping (2006–2008)

5. Scott and others (2002)

6. Kellogg and others (2003)

7. Kellogg (2002)

8. Kirkham and others (in press)

9. K.S. Kellogg, unpub. mapping, 2007–2008;

Tweto and Lovering (1977) 

10. Bergendahl (1969); K.S. Kellogg, unpub. mapping

(2007–2008)

11. Kellogg and others (2002)

12. Tweto and others (1970)

13. West (1978)

14. Eppinger and others (1984)

15. Eppinger and others (1985)

16. L.W. Anderson and L.A. Piety, unpub.

LIDAR data (2008)

17. Unpublished mapping by R.R. Shroba,

(2007–2008)

MOUNT POWELL

VAIL WEST VAIL EAST

RED CLIFF

SQUAW CREEK

WILLOW LAKES

VAIL PASS

UTE PEAK

DILLON

FRISCO

PINEY PEAK

SHEEPHORN

MOUNTAIN

KING CREEK BATTLE

MOUNTAIN

SYLVAN

RESERVOIR

MINTURN

39°45'00"

39°52'30"

40°00'00"

39°37'30"

39°30'00”

106°30'00' 106°22'30' 106°15'00 106°07'30" 106°00'00”

SURFICIAL DEPOSITS

Artificial fill deposits

Artificial fill deposits (latest Holocene)

Alluvial deposits

Active alluvium (Holocene)

Wetland deposits (Holocene and late Pleistocene)

Young stream-terrace alluvium (Holocene? and late Pleistocene)

Intermediate stream-terrace alluvium (late and middle Pleistocene)

Old stream-terrace alluvium (middle and early? Pleistocene)

Oldest stream-terrace alluvium (middle or early Pleistocene)

High-level fan and stream gravel (Pleistocene? and upper? Miocene)

Alluvial and

mass-movement deposits

Alluvium and colluvium, undivided (Holocene to middle? Pleistocene)

Younger fan deposits (Holocene and late? Pleistocene)

Older fan deposits (late? and middle Pleistocene)

Pediment deposits (late? and middle Pleistocene)

Mass-movement deposits

Colluvium (Holocene to middle? Pleistocene)

Debris-flow deposits (Holocene to middle? Pleistocene)

Talus (Holocene to middle Pleistocene)

Active or recently active landslide deposits (Holocene)

Boulder-field deposits (Holocene or late Pleistocene)

Younger landslide deposits (Holocene to middle Pleistocene)

Older landslide deposits (middle? Pleistocene to Pliocene?)

Glacial and periglacial deposits

Periglacial deposits (Holocene to early? Pleistocene)

Moraine-dammed sediments (Holocene? and late Pleistocene)

Till of Pinedale age (late Pleistocene)

Till of Bull Lake age (late and middle Pleistocene)

Mass-movement and (or) glacial deposits

Rock-glacier deposits (Holocene and latest Pleistocene)

Younger diamicton (Holocene to middle? Pleistocene)

Older diamicton (middle Pleistocene to Pliocene?)

Bouldery gold-bearing gravels of Mesa Cortina and Gold Run (middle Pleistocene to Pliocene?)

SEDIMENTARY and VOLCANIC ROCKS of 

MIDDLE PARK, BLUE RIVER VALLEY, and

SOUTHERN GORE RANGE

Troublesome Formation (upper Miocene to upper Oligocene)

Tuffaceous sedimentary rocks (Miocene and Oligocene?)

Basalt, rhyolite tuff, and sedimentary rocks of the Blue River valley (Oligocene)

TERTIARY VOLCANIC and INTRUSIVE ROCKS

Basalt dike (early Miocene? and late Oligocene?)

Alkali basalt and andesite flows of Piney and Blue Rivers (early Miocene and late 

Oligocene)

Intermediate to felsic dikes, undivided (early Oligocene?)

Latite and trachyte porphyry of Green Mountain and surrounding area (late and 

early Oligocene)

Quartz monzonite of Swan Mountain (Eocene)

LATE CRETACEOUS INTRUSIVE ROCKS

Pando Porphyry (Late Cretaceous)

LARAMIDE SEDIMENTARY ROCKS

Middle Park Formation, upper member ( Paleocene and Upper Cretaceous?)

PRE-LARAMIDE SEDIMENTARY ROCKS

Pierre Shale, undivided ( Upper Cretaceous)

Shale member

Gunsite Pass Member

Unnamed sandstone

Hygiene Sandstone Member

Lower sandstone member, including Kremmling Sandstone Member

Kremmling Sandstone Member

Lower shale member

Niobrara Formation (Upper Cretaceous)

Benton Group (Upper and Lower Cretaceous) and Dakota Formation (Lower 

Cretaceous), undivided

Benton Group (Upper and Lower Cretaceous)

Dakota Formation (Lower Cretaceous)

Morrison Formation (Upper Jurassic)

Morrison Formation (Upper Jurassic) and Entrada Sandstone (Middle Jurassic), 

undivided

Chinle Formation (Upper Triassic)

Gartra Sandstone Member

Chinle Formation (Upper Triassic) and Maroon Formation (Lower Permian to 

Middle Pennsylvanian), undivided

Gartra Sandstone Member of Chinle Formation (Upper Triassic) and State 

Bridge Formation (Lower Triassic and Permian), undivided

State Bridge Formation (Lower Triassic and Permian)

Maroon Formation (Lower Permian to Middle Pennsylvanian)

Eagle Valley Formation (Middle Pennsylvanian)

Minturn Formation, undivided (Middle Pennsylvanian)

Upper sandstone and conglomerate member and Jacque Mountain Limestone 

Member, undivided

White Quail Limestone and Elk Ridge Limestone Members and sandstone and 

shale member, undivided

Robinson Limestone Member

Middle member

Lower member

Belden Formation (Middle Pennsylvanian) and Molas Formation (Lower 

Pennsylvanian), undivided

Leadville Limestone (Dolomite) (Lower Mississippian)

Chaffee Group (Lower Mississippian? to Upper Devonian), Harding Sandstone 

(Middle Ordovician), Taylor Pass Member of Manitou Formation (Upper 

Cambrian), and Dotsero Formation (Upper Cambrian), undivided

Dyer Dolomite (Upper Devonian)

Parting Formation (Upper Devonian)

Parting Formation (Upper Devonian) and Dotsero Formation (Upper 

Cambrian), undivided

Clastic dike (lower Paleozoic?)

Harding Sandstone (Middle Ordovician), Taylor Pass Member of Manitou 

Formation (Upper Cambrian), and Dotsero Formation (Upper Cambrian), 

undivided

Sawatch Quartzite (Upper Cambrian)

PROTEROZOIC ROCKS

Proterozoic rocks, undivided (Meso- and Paleoproterozoic)—On cross section only

PROTEROZOIC PLUTONIC and METAPLUTONIC ROCKS

Pegmatite and aplite (Meso- and Paleoproterozoic)

Aplite (Paleoproterozoic)

Cross Creek Granite (Paleoproterozoic)

Monzogranite and granodiorite (Paleoproterozoic)

Tonalite (Paleoproterozoic)

Gabbro (Paleoproterozoic)

Quartz diorite and diorite (Paleoproterozoic)

Granitic gneiss ( Paleoproterozoic)

PALEOPROTEROZOIC METASEDIMENTARY

and METAIGNEOUS ROCKS

Migmatitic biotite gneiss

Biotite gneiss

Biotite-hornblende gneiss

Biotite-sillimanite schist

Quartzite

Calc-silicate gneiss

Quartz-feldspar gneiss

Hornblende-plagioclase gneiss and amphibolite

LIST OF MAP UNITS

af

Qa

Qw

Ng

Qg3

Qg1

Qac

Qfy

Qfo

Qp

QNl

Ql

Qdf

Qc

Qbf

Qtp

Qmd

Qtb

Qpg

QNd

Qr

QNmg

Qdy

b

Nt

Nst

Nbd

Npb

i

lt 

ms

Kpp

Kmu

Kp

Kpl

Kpk

Kpsh

Kph

Kpg

Kps

Kpls

Kd

Kbd

Kb

Kn

Jme

Jm

cm

c

cg

Pm

Ps

Pgs

b

ml

mm

mr

m

ev

mw

mu

Ml

Dd

Dp

Dp

cd

Mg

s

Or

YXp

Xgc

Xap

Xt

Xgr

Xd

Xgb

YXu

Xgg

Xm

Xb

Xbh

Xsb

Xq

Xc

Xf

Xh

Qg2

Qg4

Qt

Qly 

s

Or

Unconformity

Unconformity

Unconformity

Unconformity

Unconformity

Local unconformity

Unconformity

Unconformity

Unconformity

Unconformity

Disconformity

Disconformity

b

ml

mm

 m mr ev

mw

mu

Pm

?

?

?

?

? ?

?

?

?

?

?

?

?

Nbd

ms

lt i

Nbp

?

?

?

Artificial

fill deposits

Alluvial

deposits

Alluvial and

mass-movement deposits

Mass-movement

deposits

Glacial and

periglacial deposits

Mass-movement and

(or) glacial deposits

QNd

Qr

Qtp Qmd

Qtb

QNl

Qpg

Holocene

Pleistocene

Pliocene

Miocene

Oligocene

Eocene

Paleocene

TERTIARY

QUATERNARY

CRETACEOUS

JURASSIC

TRIASSIC

PERMIAN

PENNSYLVANIAN

MISSISSIPPIAN

DEVONIAN

ORDOVICIAN

CAMBRIAN

Neogene

Paleogene

MESOPROTEROZOIC

PALEOPROTEROZOIC

Dp

Dd

Mg

Dp

Ps

cm

cm

c

cg

Pgs

Jm Jme

Kd

Kbd

Kb

Kn

Kp

Kpl Kpk

Kpsh

Kph

Kpg

Kps

Kmu

b

Nt Nst

Ql Qc Qdf

QNmg

Qac

Qfy

Qfo

Qa

Qw

Ng

Qg2

Qg3

Qg4

Qp

af

YXp

Xap Xgc Xgr Xt

Xd

Xgb

Xm

YXu

Xgg Xb Xbh Xsb Xq Xc Xf Xh

cd

?

Ml

CORRELATION OF MAP UNITS

Kpls

Kpp

Upper

Cretaceous

Lower

Cretaceous 

Upper

Pennsylvanian

Middle

Pennsylvanian

Lower

Pennsylvanian

Qg1

?

?

?

SEDIMENTARY and VOLCANIC

ROCKS of MIDDLE PARK,

BLUE RIVER VALLEY,

and SOUTHERN GORE RANGE

?

?

TERTIARY VOLCANIC

and INTRUSIVE ROCKS

LATE CRETACEOUS

INTRUSIVE ROCKS

LARAMIDE SEDIMENTARY ROCKS

PRE-LARAMIDE SEDIMENTARY ROCKS

PROTEROZOIC PLUTONIC and

METAPLUTONIC ROCKS

PALEOPROTEROZOIC METASEDIMENTARY

and METAIGNEOUS ROCKS

Lower

Mississippian

Upper

Devonian

Middle

Ordovician

Upper

Cambrian

SURFICIAL DEPOSITS

cd

Qt

Qly 

Qbf

?

Qdy

PROTEROZOIC ROCKS

1 012 4 3 56789 10 KILOMETERS

1 0 234567 1 8 MILES

SCALE 1: 100 000

CONTOUR INTERVAL 50 METERS

NATIONAL GEODETIC VERTICAL DATUM 1929

GEOLOGIC MAP OF THE EAST HALF OF THE VAIL 30' × 60' QUADRANGLE, EAGLE, SUMMIT, AND GRAND COUNTIES, COLORADO

By

Karl S. Kellogg, Ralph R. Shroba, Wayne R. Premo, and Bruce Bryant

2011

For more information concerning this publication, contact:

Center Director, USGS Geology and Environmental Change Science Center

Box 25046, Mail Stop 980

(303)236-5344

Or visit the Geology and Environmental Change Science Center Web site at:

http://esp.cr.usgs.gov/ 

Any use of trade, product, or firm names is for descriptive purposes only

and does not imply endorsement by the U.S. Government.

Although this information product, for the most part, is in the public 

domain, it also contains copyrighted materials as noted in the text. 

Permission to reproduce copyrighted items for other than personal use

must be secured from the copyright owner. 

Publishing support provided by: 

Denver Publishing Service Center

Manuscript approved for publication June 6, 2011

This and other USGS information products are available at:

http://store.usgs.gov/ 

U.S. Geological Survey

Box 25286, Denver Federal Center

Denver, CO 80225

To learn about the USGS and its information products visit:

http://www.usgs.gov/ 

1-888-ASK-USGS

This report is available at:

http://pubs.usgs.gov/sim/3170

APPROXIMATE MEAN

DECLINATION, 2005 TRUE NORTH

MAGNETIC NORTH

101⁄2° Geology mapped by K.S. Kellogg and R.R. Shroba in 2005–2008

D. Paco Van Sistine prepared the digital compilation of the 

geologic map and the GIS database

Edit and cartographic layout by L.J. Binder

Denver Science Publishing Network

COLORADO

QUADRANGLE LOCATION

U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

SCIENTIFIC INVESTIGATIONS MAP 3170

Pamphlet accompanies map

106°30’ 1 725 1 725 R 81 W 38 1 750 1 750 R 80 W 1 775 1 775 39 15’ R 79 W 1 800 1 800 40 1 825 1 825 R 78 W 1 850 000 FEET (CENTRAL) 1 850 106°00’

40°00’

775 000 FEET

CENTRAL

225

442

750

200

T 2 S

441

725

175

T 3 S

700

45’

150

T 4 S

675

125

439

650

100

T 5 S

4380000mN

625

75 000 FEET

(NORTH)

T 6 S

775

225 000 FEET

(NORTH)

442

750

200

T 2 S

441

725

175

T 3 S

700

45’

150

T 4 S

675

125

439

650

100

T 5 S

438

75 

T 6 S

39°30’

1 825 1 825 R 78 W 1 850 000 FEET (NORTH) 1 850 R 77 W 106°00’ 40 15’ R 79 W1 800 1 800 0000mE 3 106°30’ 1 725 1 725 R 81 W 1 750 1 750 R 80 W 1 775 1 775 9

39°30’

40°00’

Suggested citation:

Kellogg, K.S., Shroba, R.R., Premo, W.R., and Bryant, Bruce, 2011, Geologic 

map of the east half of the Vail 30’ × 60’ quadrangle, Eagle, Summit, and 

Grand Counties: U.S. Geological Survey Scientific Investigations Map 3170, 

49 p. pamphlet, 1 sheet, scale 1:100,000.

Base from U.S. Geological Survey, Vail, Colo. 1:100 000-scale metric, 1980

Projection and 10 000-m grid, zone 13

Universal Transverse mercator

North American Datum 1927 (NAD 27)

25 000-foot grid tics based on Colorado coordinate system, central and 

north zones

625 000 FEET

(CENTRAL)

A

Contact—Dashed where approximately located, dotted where concealed. Dotted 

where projected from surface on cross section

Gradational boundary—A boundary on the geologic map depicted by a change in 

color of map units, but lacking a contact line symbol

Fault—Dashed where approximately located; dotted where concealed. Dotted where 

projected from surface on cross section

Normal fault—With possible Holocene movement. Identified by LIDAR imagery; 

Bar and ball on downthrown side

Normal fault—Bar and ball on downthrown side; dashed where approximately 

located, dotted where concealed

Thrust fault—Teeth on hanging wall; dashed where approximately located; dotted 

where concealed

Reverse fault—Rectangles on upthrown block, dashed where approximately located; 

dotted where concealed

Anticline—Dotted where concealed

Syncline—Dotted where concealed

Overturned syncline—Dotted where concealed

Limestone bed

Breccia zone

Ductile deformation fabric in Proterozoic rocks (shear zone)

Horizontal bedding—Showing strike and dip

Inclined bedding—Showing strike and dip

Overturned bedding—Showing strike and dip

Inclined foliation—Showing strike and dip

Vertical foliation—Showing strike

Lineation—Showing bearing and plunge

Sample or site location—Letter correlates with field number (see table 1 in 

pamphlet)

Water body 

EXPLANATION

54

60

20

23

No vertical exaggeration

CONVERSION FACTORS

Multiply By To obtain

inch (in)

inch (in)

0.3937

0.03937

3.281 foot (ft)

0.6214 mile (mi)

millimeters (mm)

centimeters (cm)

meters (m)

kilometers (km)

square kilometer (km2)

Period or

subperiod

Epoch Age

Quaternary

Holocene

Pleistocene

late

middle

early

0–11.7 ka

11.7–132 ka

132–788 ka

788–2.58 Ma

Neogene Pliocene

Miocene

2.58–5.33 Ma

5.33–23.0 Ma

Paleogene

Oligocene

Eocene

Paleogene

23.0–33.9 Ma

33.9–55.8 Ma

55.8–65.5 Ma

DIVISION OF QUATERNARY, NEOGENE, AND PALEOGENE TIME

USED IN THIS REPORT1

1Ages of time boundaries are those of the U.S. Geological Survey Geologic Names Committee (2009).

0.3861 square mile (mi2)