INTERIM GEOLOGIC MAP OF THE FRANCIS CANYON QUADRANGLE,

LOST CREEK DRAINAGE, MORGAN, RICH, AND SUMMIT COUNTIES, UTAH

Open-File Report 425 Utah Geological Survey a division of

BY

JAMES C. COOGAN Department of Geology Western State College

Gunnison, Colorado 81231

February 2004

Utah Department of Natural Resources o

This release makes information available to the public during the review and production period necessary for a formal UGS publication. Because the release is subject to review and may not conform to UGS policy and editorial standards, it may be premature for an individual or group to take action based on the contents. This material will not be reproduced when "the final product has been released.

Although this product represents the work of professional scientists, the Utah Department of Natural Resources, Utah Geological Survey, makes no warranty, express or implied, regarding its suitability for a particular use. The Utah Department of Natural Resources, Utah Geological Survey, shall not be liable under any circumstances for any direct, indirect, special, incidental, or consequential damages with respect tocIaims by users of this product.

This geologic map was funded by the Utah Geological Survey and the U.S. Geological Survey, National Cooperative Geologic Mapping Program through U.S. Geological Survey ST ATEMAP award number 98HQAG2067. The views and conclusions contained in this document are those of the author and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.

MAP UNIT DESCRIPTIONS for the Lost Creek drainage, Lost Creek Dam, Peck Canyon, and Francis Canyon 7.5' quadrangles

(all Quaternary units are not present nor are all bedrock units exposed in each quadrangle)

QUATERNARY Qa3 Alluvium, undivided (Quaternary) - Sand, silt, clay, and gravel in stream and alluvial-fan

deposits; composition depends on source area; located about80 to 100 feet (12-30 m) above drainages in Coyote and Toone Canyons in Lost Creek Dam quadrangle; may be same age as Qat3 and Qaf3; 0 to 20 feet (0-6 m) thick.

Qao High-level alluvium (Pleistocene) - Sand, silt, clay, and gravel above adjacent stream terraces; located about 100 to 120 feet (30-36 m) above Saleratus Creek in Francis Canyon quadrangle as well as above Lost Creek prior to damming, now located next to Lost Creek Reservoir; in Lost Creek Dam quadrangle likely older than Qa3, Qat3, and Qaf3, and younger than Qat4 and Qaf4; age in the Francis Canyon quadrangle uncertain because it's in a different drainage system; thickness 0 to 20 feet (0-6 m).

Qal Stream and floodplain alluvium (Holocene) -- Sand, silt, clay, and gravel in channels and floodplains; locally includes fan alluvium in canyons; composition depends on source area; 0 to 20 feet (0-6 m) thick.

Qat2, Qaty, Qat3, Qat4 Stream-terrace alluvium (Quaternary) -- Sand, silt, clay, and gravel in terraces above floodplains; terraces just above floodplains (Qat2) are located downstream from Lost Creek Dam and near the mouth of Francis Canyon; slightly higher terraces (Qaty) are about 40 feet (12 m) above Toone Canyon drainage in Lost Creek Dam quadrangle, and 20 to 40 feet (3-12 m) above Saleratus Creek in Francis Canyon quadrangle, except where down-dropped by normal faults; higher terraces (Qat3) are present about 80 feet (25 m) above Lost Creek south of the dam, likely about 80 feet (25 m) above pre-dam drainage near Lost Creek Reservoir, and 40 to 80 feet (12-25 m) above Lost Creek in Peck Canyon quadrangle; Qat4 is 160 feet (50 m) above drainage in Hell Canyon in Lost Creek Dam quadrangle, but might correlate with Qa5 (> 160 feet above drainage) near Henefer; 0 to 20 feet (0-6 m) thick.

Qaf, Qafy, Qafl, Qaf2, Qaf3, Qaf4, Qaf5 Alluvial-fan deposits (Quaternary) -- Mostly sand, silt, and gravel that is poorly stratified and poorly sorted; deposited mainly by debris flows in drainages and at drainage mouths; generally less than 40 feet (12 m) thick; where possible younger deposits (suffix y) are separated; number suffixes (1-5), used in Guildersleeve Canyon, Lost Creek Dam quadrangle, indicate relative age (1 is youngest); Qaf2 is incised by present drainage; Qaf3 is more than 80 feet (25 m) above present drainage and likely the same age as Qat3; Qaf4 is 160 feet (50 m) above present drainage; generally less than 40 feet (12 m) thick.

1

Qap Pediment-mantle deposits (Pleistocene) -- Mapped only in Lost Creek Dam quadrangle, overlapping and uncut by Toone Canyon normal fault, and south of the mouth of Toone Canyon; surfaces appear to be at least 40 feet (12 m) above adjacent drainages and developed on older mass movement deposits.

Qac Alluvium and colluvium (Quaternary) -- Includes stream and fan alluvium, colluvium, and, locally, mass-movement deposits; 0 to 20 feet (0-6 m) thick.

Qc Colluvium (Quaternary) -- Includes slopewash and soil creep; composition depends on local bedrock; generally less than 20 feet (6 m) thick.

Qm Mass-movement deposits, undivided (Quaternary) -- Includes slides, slumps, and flows, as well as colluvium and talus; mapped on steep slopes where several mass-movement processes may contribute to deposit; composition depends on local sources; 0 to 40 feet (12 m) thick.

Qmc Mass-movement and colluvial deposits, undivided (Quaternary) -- Includes landslide, slump, slopewash, and soil creep; mapped in areas of subdued morphology where separate mapping of mass movement and colluvial deposits is not possible; composition depends on local sources; 0 to 40 feet (12 m) thick.

Qms, Qmsy, Qmso Slides and slumps (Quaternary) -- Poorly sorted clay- to boulder-sized material derived from steep local source terrain; generally characterized by hummocky topography, head and internal scarps, and chaotic bedding in displaced bedrock; locally includes flow deposits; morphology becomes subdued with age; where possible divided into younger and older (Pleistocene) deposits (suffixes y and 0, respectively); thicknesses highly variable.

Qf Artificial fill (Recent) -- Mapped only at Lost Creek Dam.

TERTIARY Tw Wasatch Formation (Eocene and uppermost Paleocene) -- Typically red sandstone,

siltstone, mudstone, and conglomerate with minor gray limestone and marlstone locally; lighter shades of red, yellow/tan, and light gray more common in uppermost part; total thickness up to 4,500 feet (1,370 m) south of Henefer; thickness varies locally due to considerable relief on basal erosional surface in all three quadrangles.

Twc Basal conglomerate of Wasatch Formation -- Red-orange- and tan-weathering, cobble conglomerate; mainly comprised of Proterozoic and Cambrian quartzite clasts (DeCelles, 1994); forms prominent cliffs along the western tributaries of Lost Creek in Lost Creek Dam quadrangle and to south near Devils Slide; 0 to 400 feet (120 m) thick.

2

CRETACEOUS Evanston Formation (Paleocene and Upper Cretaceous-Maastrichtian!Campanian)

Keh Hams Fork Member (Upper Cretaceous) -- Light-gray, brownish-gray, and tan sandstone, conglomeratic sandstone, and quartzite- and chert-pebble conglomerate, variegated gray, greenish-gray, and red mudstone, and dark-gray, carbonaceous shale and coal in upper part; member coarsens downward and northwestward into basal conglomerate; member thickens to north, from 300 feet (90 m) to south at Echo Canyon to 1,200 feet (365 m) at Lost Creek Dam and then thins farther north above basal unconformity. Coal beds are present just above and up to 200 feet (60 m) above of contact with basal conglomerate, or, if conglomerate is missing, the base of the Hams Fork Member in the Lost Creek Dam quadrangle. Coal is about 400 feet (120 m) above the contact with the basal conglomerate up Coal Hollow in the Francis Canyon quadrangle (see Doelling, 1972).

Kehc Basal conglomerate of Hams Fork Member (Upper Cretaceous) -- Tan and gray, cobble to boulder conglomerate with minor interbedded gray, carbonaceous mudstone; conglomerate comprises >80% Proterozoic and Cambrian quartzite clasts, but locally contains clasts of Triassic and Jurassic sandstone and rare Precambrian crystalline basement clasts (DeCelles, 1994); 150 feet (45 m) thick in the hanging wall of the Crawford thrust in Lost Creek Dam and Francis Canyon quadrangles; thickness varies in the Crawford footwall from about 300 feet (90 m) in Toone Canyon in Lost Creek Dam quadrangle to about 115 feet (35 m) in Francis Canyon quadrangle; conglomerate is absent to north along the regional angular unconformity in Peck Canyon quadrangle.

Kwc Weber Canyon Conglomerate (Upper Cretaceous-Campanian/late Santonian) -- Red, gray and tan, boulder to cobble conglomerate with minor sandstone and mudstone interbeds; locally exposed within a growth syncline above the buried Crawford thrust trace in Lost Creek Dam and Francis Canyon quadrangles; clasts are from the Tintic Quartzite, Weber Quartzite, Nugget Sandstone, Lodgepole Limestone, Park City Formation, and Twin Creek Limestone (DeCelles, 1994); contains progressive intraformational unconformities; base not exposed, but at least 1,900 feet (580 m) thick near Devils Slide south of Lost Creek Dam quadrangle.

Kk Kelvin Formation (Lower Cretaceous-Albian! Aptian) -- Upper half contains tan and gray, coarse-grained, cross-bedded sandstone and pebbley sandstone with abundant chert; interbedded with red and minor gray-green mudstone. Middle part contains thin, discontinuous beds of nodular, blue-gray and lavender, micritic limestone. Lower half comprises chert-pebble conglomerate separated by recessive red mudstone and sandstone zones. Approximately 2,500 feet (700 m) thick in Toone Canyon, Lost Creek Dam quadrangle, but top not exposed. At least 5,700 feet (1,740 m) thick to south near Henefer, though base not exposed.

JURASSIC Jsp Stump Sandstone and Preuss Redbeds, undivided (Upper and Middle Jurassic) -- Red and

purple-red sandstone, mudstone, and shale; poorly exposed; top of combined unit

3

contains about 100-foot (30-m)-thick covered interval of gray-green sandy soil representing the Stump Sandstone at Toone Canyon; basal Preuss Redbeds contains halite in subsurface; combined unit is about 1,000 feet (300 m) thick at Toone Canyon, Lost Creek Dam quadrangle. Stump is about 250 feet (76 m) thick to the north at Watton Canyon (Pipiringos and Imlay, 1979).

Twin Creek Limestone (Middle Jurassic) -- Mostly white- to gray-weathering, shaley limestone with some shale; 2,722 and 2,600+ feet (825 and 790+ m) thick to south at Devils Slide and to north at Birch Creek, respectively (Imlay, 1967); mapped as separate members listed below.

Jtgc Giraffe Creek Member -- Gray, greenish-gray, and tannish-gray, calcareous sandstone and lime grainstone; forms ridges; about 225 feet (70 m) thick and structurally thickened in synclinal hinges; mapped only in Lost Creek Dam and Peck Canyon quadrangles.

Jtl Leeds Creek Member -- Light-gray, thin- to very thick-bedded, soft, clay-rich, micritic limestone with tan silt partings; locally exhibits bedding-normal, pencil cleavage; forms barren, scree-covered slopes; 1,000 to 1,200 feet (300-365 m) thick.

Jtw Watton Canyon Member -- Dark-gray, lime micrite and wackestone and minor oolite packstone; forms prominent ridges; locally exhibits bedding-normal, stylolitic, spaced cleavage; about 400 feet (120 m) thick.

Jtb Boundary Ridge Member -- Gray, very thick-bedded, ridge-forming, oolitic, lime grainstone to wackestone beds in middle and upper part that separate red and purple siltstone and gray, silty, limestone beds in middle and lower part; 100 to 250 feet (30-75 m) thick.

Jtr Rich Member -- Light-gray, thin- to very thick-bedded, soft, clay-rich, micritic limestone in upper part and gray, lime wackestone in lower part; locally exhibits bedding-nonnal, pencil cleavage; forms barren, scree-covered slopes; about 500 feet (150 m) thick.

Jts Sliderock Member -- Dark-gray, very thick-bedded, lime wackestone in upper part and dark-gray, pelecypod and crinoid grainstone in lower part; forms small ridges; 100 to 227 feet (30-70 m) thick.

Jtgs Gypsum Spring Member -- Red siltstone and sandstone, and gray, vuggy dolomite, with anhydrite in subsurface; up to 208 feet (65 m) thick.

In Nugget Formation (Lower Jurassic) -- Pale-grayish-orange, pinkish, and locally white, well-cemented, cross-bedded, quartz sandstone; about 1,100 and 1,500 feet (335 and 460 m) thick at Toone Canyon, Lost Creek Dam quadrangle, and to south at Devils Slide (Eardley, 1944), respectively.

TRIASSIC (mapped only in the Francis Canyon quadrangle) TRaw Wood Shale Tongue of the Ankareh Formation (Upper Triassic) -- Bright orange-red

shale, siltstone, and sandstone; locally micaceous; about 500 feet (150 m) thick.

TRht Higham Grit; and Timothy Sandstone and PortneufLimestone Members of the Thaynes Formation, undivided (Triassic) -- Gray and greenish-gray, micaceous, quartz-granule

4

sandstone at top (Higham); greenish-gray, lithic-pebble conglomerate in middle, containing green siltstone clasts and rare fossil wood fragments (Timothy); and thin (2 feet [0.6 m]), gray and lavender, mottled limestone at base (portneuf); aggregate thickness about 200 feet (60 m).

TRal Lanes Tongue of the Ankareh Formation (Lower Triassic) -- Purple and brownish-red shale, siltstone, and sandstone; about 450 feet (140 m) thick.

Thaynes Formation (Lower Triassic) TRtu Upper calcareous siltstone member - Brownish-gray, thin-bedded, calcareous siltstone

and thin-bedded, gray, fossiliferous limestone; about 750 feet (260 m) thick. TRtms Middle shale member - Gray, thin-bedded, calcareous, silty shale; about 100 feet (30 m)

thick. TRtml Middle limestone member - Gray, very thick- to medium-bedded, fossiliferous limestone;

forms prominent ridge; about 110 feet (33 m) thick. TRtls Lower shale member -- Gray to brownish-gray, thin-bedded, calcareous siltstone to silty

shale; Meekoceras ammonite zone at base; about 375 feet (115 m) thick. TRtll Lower limestone member - Gray to grayish-brown, thick- to thin-bedded, fossiliferous

limestone; about 200 feet (60 m) thick.

TRW Woodside Formation (Lower Triassic) -- Dark-red, sandy shale and siltstone, locally exhibits green reduction spots; only upper 200 feet (60 m) exposed.

REFERENCES

Cited DeDelles, P. G., 1994, Late Cretaceous-Paleocene synorogenic sedimentation and kinematic

history of the Sevier thrust belt, northeast Utah and southwest Wyoming: Geological Society of America Bulletin, v. 106, p. 32-56.

DeDelles, P. G., and Cavazza, W., 1999, A comparison of fluvial megafans in the Cordilleran [northeast Utah and southwest Wyoming] (Upper Cretaceous) and modem Himalayan foreland basin systems: Geological Society of America Bulletin, v. 111, p. 1315-1334.

Doelling, H.H., 1972, Lost Creek Coal Field, in Doelling, H.H., and Graham, R.L., Eastern and northern Utah coal fields: Utah Geological and Mineralogical Survey, Monograph 2, p. 395-409.

Eardley, A.J., 1944, Geology of the north-central Wasatch Mountains, Utah: Geological Society of America Bulletin, v. 55, p. 819-894, plate 1 scale 1:125,000.

Imlay, R.W., 1967, Twin Creek Limestone (Jurassic) in the Western Interior of the United States:

5

u.s. Geological Survey Professional Paper 540, 105 p.

Pipiringos, G.H., and Imlay, R.W., 1979, Lithology and subdivisions of the Jurassic Stump Formation in southeastern Idaho and adjoining areas: U.S. Geological Survey Professional Paper 1035-C, 25 p.

General Coogan, J.C., 1992, Thrust systems and displacement transfer in the Wyoming-Idaho-Utah thrust

belt: Laramie, University of Wyoming, Ph.D. dissertation, 240 p., 17 plates.

Yonkee, W.A., DeCelles, P.G., and Coogan, J.C., 1997, Kinematics and synorogenic sedimentation of eastern frontal part of the Sevier orogenic wedge, northern Utah: Brigham Young University Geology Studies, v. 42, part 1, p. 355-380.

6

MAP SYMBOLS for the Lost Creek drainage, Lost Creek Dam, Peck Canyon, and Francis Canyon 7.5' quadrangles

(all map symbols are not present on each map)

-~ ........

...,...-r ... ~ . '

.--t-_ ...

~ .. .. .

Contact, dashed where approximately located or gradational, dotted where concealed.

Marker Bed, in map unit 1tl to show structure near Lost Creek Thrust, Lost Creek Dam quadrangle.

Normal Fault, bar and ball on downthrown side, dashed where approximately located, dotted where concealed.

Thrust Fault, teeth on upper plate, dotted where concealed; locally bar and ball on fault shows later normal movement.

Anticline Axis, dashed where approximately located, dotted where concealed, arrow shows plunge.

Syncline Axis , dashed where approximately located, dotted where concealed, arrow shows plunge.

Overturned Anticline Axis, dashed where approximately located, dotted where concealed, arrow shows plunge.

Overturned Syncline Axis, dotted where concealed, arrow shows plunge.

Mass-Movement Scarp

Sinkhole, mapped only in Peck Canyon quadrangle

Strike and Dip of Bedding Upright (top known on right) Overturned (top known on right) Vertical Horizontal Determined by Photogrammetry (upright)

Strike and Dip of Cleavage

Sample Location and Number

7

Lost Creek Drainage - Lithologic Column

AGE MAP MAP UNIT SYMBOL

d Q-various Alluvium, lake beds, mass movements

0 ~ UJ Tw Wasatch Formation '. UJ --l I- ~ I Twc Basal conglomerate I

(/) Keh Hams Fork Member of Evanston Formation =>

0 UJ Kehc Basal conglomerate of Hams Fork Member ()

~ Kwc Weber Canyon Conglomerate UJ 0:: Kk Kelvin Formation ()

Jsp Stump Sandstone

Preuss Sandstone

Jtgc Q) Giraffe Creek Member C

() Jtl ~ Leeds Creek Member U5

Q)

E (/) Jtw ::J Watton Canyon Member «

Jtb -'" Boundary Ridge Member 0:: Q)

=> 2! Jtr Rich Member --., U Jts C Sliderock Member

Jtgs ~ Gypsum Spring Member

In Nugget Sandstone

-?- Raw Wood Shale Tonque of Ankareh Fm Rht Hinqham Grit, and Mbrs of Thaynes Fm Ral Lanes Shale Tonque of Ankareh Fm

S:? Rtu Upper calcareous siltstone member (/) Ul (/) Rtms Q) Middle shale member « Rtml

cE Middle limestone member ii: ~LL

RtiS .t:: Lower shale member l- I-Rtll Lower limestone member RW Woodside Shale

Diagram is schematic--- no fixed thickness scale PALEO.-EO. = Paleocene-Eocene

THICKNESS SCHEMATICI OTHER INFORMATION FEET METERS COLUMN

0-500 0-150 .... ..:..:.:..:.. -.... ',', :: 00 0

UNCONFORMITY up to up to o 0 0 0

4,500 1,370 ............ I.)~: ~.}.'~'~

0-400 0-120 00 0 0 0

0-1,200 0-365 ~~~iJ :o:o:~) 0-300 0-90 o:<?:o:~

0'0 .~~ ANGULAR UNCONFORMITY

0-1,900 0-580 .0.0'0 '0'0'0

2,500+ 700+ .~.'<~ :.:::~ .. :: Top not exposed

-1,000 -300 f.;': ~:o:~: UNCONFORMITY

.~;.~:~. Salt in subsurface -225 -70 rj~{ ----UNCONFORMITY 1,000- 300-365 1,200 "'-~

400 120 f--L.-1--1

100-250 30-75/ ~ .L-'- .L

-500 -150 .L ..I-. ..L

100-230 30-70

~ 50?-210 15?-6f/ 1,100- 305-460 1500 -500 -150 --~

-200 -60 : ..... :--:] cc -450 -140

.- 0 - - - ~~.!!1

-750 -260

~ §mg' -cuf!! -100 -30

-110 -33 5l.~ as °C::J

-375 -115 --=-{ ComO" ~u: -200 -60 T'::J::'::::7

200+ 60+ --- ........... Base not exposed

Lost Creek Drainage Bedrock Correlation Chart

[Tw] ~

Unconformity

~ Uncoriformity

8 Unconformity

~ Unconformity

o Unconformity

~ Unconformity

Jtgc

Jtl

Jtw

Jtb

Jtr

Jts

Jtgs

In

"Raw

"Rht

"Ral

"Rtu

"Rtms

"Rtml

"Rtls

"Rtil

"Rw

Exposed only in Francis Canyon

quadrangle

E til ~

U5

-------.

Q) c: Q) Post-u .2 Bonneville a I

- BOnl1evilie - .

Q) _ ~e1Jr~s~i~e _ . c: Bonneville Q)

_ T!:.a~s(!r~s~v~ . u .E Ul

:!1 0.. Pre-Bonneville

?

Lost Creek Drainage Quaternary Correlation Chart

Alluvial

OJ U til t:: Fan ~

Qaf1

Qafy Qaf2

Qaf3 ?

? Qaf4

Qaf5

? L----J

Only in Lost Creek Dam quad.

~ OJ c: OJ

(!)

Qa3 Qaf ?

?

Qao ?

Mixed

E § .~-g.~ ~tIl'5 <t: ()

Pediment Mantle rn

Mass-movement

Slide and Slump

Qmsy

Qae

L----J

Only in Lost Creek Dam quad.

Qms Qm Qe Qme

Human

III [9!J L----J

Only in Lost

Creek Dam quad.

7

TOONE

CANYON

ANTICLIN

E

CRAWFORD

THRUST

CRAWFORD

THRUST

2

CR

AW

FOR

D

THR

US

T

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Jtb

Jtw

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Qms

Jtw

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TRtu

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TRaw

TRal

Jn

TRtms

TRtml

TRtlsTRtll

TRtls

Qaf

TRw

Qal

Jtb

Qaf

QafQaf

QafQaf

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TRtu

Keh

Keh

TRw

Jtb

Jtb

Jtr

Jts

Jtgs

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Qmc

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3

3

3

6

3

5

96-48

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Qmc

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3

5

3

3

7

4

5

3

3

4

4

TRtu

8

2

6

1

1

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5

5

3

2

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6

1

3

5

8

9

5

3

7

1

3

2

Keh

3

2

3

2

Qms

4

Kwc

Qc

2

2

2

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79

80

62

82

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64

55

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24

31

16

1557

65

52

9

2613

78

43

60

55

56

53

70

35

2421

48

30

30

50

4434

36

23

23

30

1728

37

30 59

2840

39

43

32

31

30

32

33

44

33

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42 5147

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63

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31

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32

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4262

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60

2

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3

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4

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5

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5

8

4

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3

1

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10

8

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18

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5

14

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1

2

5

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8

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Kehc

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7

6

37

4

19

20

3

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4

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3

8

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9

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1

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1

5

2

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2

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2

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4

2

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Qms

2

2

3

5

4

4

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3

Qaf

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Qms

Qms

Qms

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Qac

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Tw

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Keh

Kehc

Kwc

Kwc

Kwc

Kwc

96-40

96-50

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3

2

5

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Qms Qms

5

Qms

5

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Qms

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Qms

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5

6

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Qms

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3

7

1

9

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10

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Keh

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2

4

7

4

4

2

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33

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32

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1

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5

5

7

6

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4

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Kehc

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Keh

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Keh

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Kwc

Kwc

Kehc

Kehc

Kehc

Kehc

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Kwc

Kehc

Kehc

Kehc

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Kehc

Kehc

Kwc

Kwc

Kehc

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Jn

Jtgs

Keh

Kwc

Kwc

Kwc

Kwc

Kwc

Kehc

Jtgs

Jtgs

Jn

Jts

Jts

Jts

Jtgs

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Keh

Tw

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TRaw

Jn

TRal

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TRtu

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Kehc

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1-A1 Amoco-Marathon

1 Champlin 432 Amoco B

Qal

1 Champlin 432 Amoco A

INTERIM GEOLOGIC MAP OF THE FRANCIS CANYONQUADRANGLE, MORGAN, RICH, AND SUMMIT COUNTIES, UTAH

by JAMES C. COOGAN2004

Basemap produced by U.S. Geological Survey

Open-File Report 425Interim Geologic Map of theFrancis Canyon 7.5' Quadrangle

This release makes information available to the public during the reviewand production period necessary for a formal UGS publication. Becausethe release is subject to review and may not conform to UGS policy andeditorial standards, it may be premature for an individual or group to takeaction based on the contents. This material will not be reproduced whenthe final product has been released.

Although this product represents the work of professional scientists, the UtahDepartment of Natural Resources, Utah Geological Survey, makes no warranty,expressed or implied, regarding its suitability for a particular use. The UtahDepartment of Natural Resources, Utah Geological Survey, shall not be liableunder any circumstances for any direct, indirect, special, incidental, orconsequential damages with respect to claims by users of this product.

This geologic map was funded by the Utah Geological Survey and the U.S.Geological Survey, National Cooperative Geologic Mapping Program throughU.S. Geological Survey STATEMAP award number 98HQAG2067. The viewsand conclusions contained in this document are those of the author and shouldnot be interpreted as necessarily representing the official policies, eitherexpressed or implied, of the U.S. Government.