U.S. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY

22°30"

PROFESSIONAL PAPER 1560
PLATE 2C

123°00)

45°30

423°30'

45°00 +

44°30'—

44°00".

INDEXES TO SOURCES OF GEOLOGIC MAPPING

LIST OF MAP UNITS 00"
NORTHWEST SOUTHEAST baa 00
A GULF MOBIL copurc A Qns —Nonmarine sedimentary deposits (Holocene and Pleistocene) ail
METERS Porter 1 (ra Baker 1 HILLS METERS |
1000 4% mK.B. 110 mK. B. r 1000 Qt High terrace gravels (Pleistocene) “I
%
Tms Ons + Tf Tf Fluvial and lacustrine(?) sedimentary deposits (Pliocene and | “10
SEA LEVEL [SEA LEVEL Misteneji er me me sg P #
S Te — Columbia River Basalt Group (Miocene), undivided 4sea0 ye F
Tsu :
0 aS 2 — ee F ta00 Wanapum Basalt i |
Tyim Facies change
| -——_—_—_—— = - (location inferred) Tewf Frenchman Springs Member
Ee ARSE te ae) hae De ee ? 2 12000 .
200 i Te oe Tlb Little Butte Volcanics, undivided (Miocene and Oligocene)
r —
ies) Tibb Basalt and basaltic andesite et
30004 3000
Tibw Welded to nonwelded ash-flow tuff
4000 anon Tms Marine sedimentary rocks (Oligocene and Eocene) q
Tf Fisher Formation (Oligocene and Eocene) i 16
Ts Spencer Formation of Turner (1938) (Eocene) H [|
‘ AMERICAN QUASAR AMERICAN QUASAR RESERVE }
WEST 3 M&P Farms Hickey 9-12 Esmond 1 EAST tal, * Mpper jneaiber 612 U 29 |/30
B & 73m K.B. 104m K.B. 148 m K.B. B Ts! Lower member
Prana g (projected 400 m narth- (projected 100 m north § (projected 100 m south METERS
1000 3 E northeast to line of section) to line of section) 3 to line % section) = — 1000 tev Volcanic rocks a
’ = Tsv'§
Ti és Qns+T# ,Tms Ons + Tfl Tams sl > Ty Yamhill Formation (Eocene) 21
SEA LEVEL 2—— SEA LEVEL
saelaany fetoas ? US. ~~ Tyum Upper mudstone member
NMS pon ao Tsl he ba Tms =
1000 4 Tsl Tsu tad ap I Re a t j000 Tym Miller sand of Bruer and others (1984)
~ Tym = Le Ree Ee OE ee
a = — = —<=h See Tyim Lower mudstone member
| = awe Tyum ==. |
2000 Po see reams : = \ _ Tym % hate Tyv Volcanic rocks
Oo AR | SS SS —_\— 7 — Ole ?
3000 _ ah ade SS 2 erin i i z|3.""" ‘kioceway SNe + 3000 Te | fives: Formation (Edeeiie)
4 a ee an 2 ?
CALAPOOIA’ 3 S87 = = = oak CREEK FAULT fr a BUTTE FAULT — 5,7 F ae
RIVER FAULT 4 Tsr — Siletz River Volcanics (Eocene)
4oo0 4000 Ti Intrusive rocks, undivided (Tertiary)
SALEM HILLS Contact—Dashed where inferred; queried where uncertain
wear eu OREGON NATURAL GAS —_REICHOLD-NNG QUINTANA WALDO HILLS EAST —— Fault—Dashed where inferred; queried where uncertain. Arrows show
C 128 mK.B. Inresndenes faze elt gjoenae Cc direction of relative movement; T, movement toward viewer; A,
METERS (projected 400 ra Sit (projected 1000 m north (projected 350 m south (projected 150m south METERS movement away from viewer ; -
1000 ip lihe Br Section Z| to line of section). 4. -g- to line of section) toline of section).g. Si 1000 ae Unconformity—Dashed where inferred; queried where uncertain
518 Qns+Tf 7 5 Te te
Ee te ing na a prs Te [pans ( (fe 2"), Exploratory petroleum well—Showing name. K.B., kelly bushing,
SEA LEVEL | SEA LEVEL ~ the reference point from which the well depths were measured
11 Me ad di
vo00 aes of formation ——>|
20004 “2000
Some units have been combined or omitted
3000 3000
aAicLER HUMBLE LINN COUNTY OL
NORTHWEST Bursell 1 CRAIG Miller 1 AMERICAN QUASAR Barr 1 SOUTHEAST
D aa paeate AMERICAN QUASAR As Meremke Iprojected 400 m northeast D'
i 53m K.B. (projected 350 m northeast mK.B. projecte northe
es ea rn oF psoas z PORT ONG AS COKE (projected 400 m southwest Rereenel as Serta lina af sedtion} (projected 1500 m southwest to line of section) _{ METERS
eli, i i MKB. to line of section)
Ela 53m KB. to line of section) (projected 3700 fh >
T g projectes m northeast Ons + Tf
s poem to line of section) TS tet Ons FM Th Tb
SEA LEVEL Danaea ORES peaeqpeseapeeeytnes Sr] RJ EA] is | SEA LEVEL
ee a we ES SS SS SS =F Es — SS Tym 2 they wat
hsp A cenisehi ieee Ty 5 == —_—_| pon we tg TS Tyum ? ~~, 7— Lon
ne RRA RAR ARR ARR ARR ED RN nn ee ma ll nn ne RRA RRR RR L —=s fe
1000 Ren i ans tain Nei GRR ehiin seein BREE Homes Soe = Tween ~~
Tyim Tym — oS
rt — ~~ —
2000 a ha? a — aca + 2000
Ss Tyim PRA as aS,
Be Tsr? ~ =3
. \peasr ALBANY Tsr ae L-so00
\, FAULT ale
Some units have been omitted a
4000 4000
WEST EAST
E'
15 E 15
s L-10
Zz Ww
=
2 5
ih
=3
Eo
2275
oc
eS
225] |
a75 s
=
=
@ -04 f— -10
oc
5 15
OREGON NATURAL GAS
Werner 34-21 QREGON NATURAL GAS AERATION
iikejenea ete aie | Debltseens33 62m K.B.
g REICHOLD f 59 m K.B. , B
METERS Sy Werner 14-21 t@line of section) (projected 100 m south era ea sous = ETB
OT Se 58m K.B. to line of section)
J 5 ~ (projected 150 m north Bo Ons + Tl ~- b
he Qns + Til to line of section) 1 edie
SEA LEVEL ane Ona Thl RRS
4 Te’ Tms Paes Th Tib [_ i000
1000 + =o oom ne al aig
| Ts
pol MOUNT ANGEL FAULT | sag
| Some units have been combined or omitted
3000 3000
NORTH SOUTH
F F Fil
1 T iT
Z
= 54 bo
2
<3 |
>a 04 q
EO
aa
<i 5
oc |
5 7
22
Ss «04 - -10
9
rn
15 “15
QUINTANA ERNTSON é
REICHOLD Gath 1 Schermacher 1
Were fA iE wtb |;
METERS 58m K.B. projected 800 m eas! projected 50m 3 METERS
ee NAHAMA and WEAGENT (projected 50 rn east 59 m K.B. WALDO. to line of section) toline of section) 2 r— 1000
000 5 Te Klohs 1 pray (projected 350 rt 5
> 281m KB to line of section) projecter mwes' Te HILLS 5 ie Towt
4 -B. mom to line of section) Ons + Tf = ia
Qns +THl sue
SEALE Ons +Tfi DOO OR rere ae rine
4 Tms dt jee creek rautt Te L
Te 7 wR me Tms aan
1900 4 want ly eer OP RR OE —N t— 1000
J Ty Ts tT Ty WAtDO HILLS 2) iene! satay OP RR RR eR es Some units have been combined |
NEWBERG FAULT = RANGE-FRONT FAULT—__] Ty wee)
2000 : 2000
a 5

it KILOMETERS:

CROSS SECTIONS AND SELECTED RESIDUAL GRAVITY ANOMALY PROFILES OF THE WILLAMETTE VALLEY, OREGON

By

Robert S. Yeats, Erik P. Graven, Kenneth S. Werner, Chris Goldfinger, and Thomas A. Popowski

1996

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SOURCES OF GEOLOGIC MAPPING

. Al-Azzaby, F.A., 1980, Stratigraphy and sedimentation of the Spencer Forrma-

tion in Yamhill and Washington Counties, Oregon: Portland, Oreg., Portland
State University, M.S. thesis, 104 p.

. AlEisa, A.R.M., 1980, The structure and stratigraphy of the Columbia River

Basalt in the Chehalem Mountains, Oregon: Portland, Oreg., Portland State
University, M.S. thesis, 67 p.

. Allison, LS., 1953, Geology of the Albany quadrangle, Oregon: Oregon

Department of Geology and Mineral Industries Bulletin 37, 18 p.

. Allison, I.S., and Felts, W.M,, 1956, Reconnaissance geologic map of the Leb-

anon quadrangle, Oregon: Oregon Department of Geology and Mineral Indus-
tries Map QM-4, scale 1:62,500.

. Anderson, R.W., 1963, Geology of the northwest quarter of the Brownsville

quadrangle, Oregon: Eugene, University of Oregon, M.S. thesis, 62 p.

. Baldwin, E.M., 1948 [revised 1964], Geology of the Dallas and Valsetz

15-minute quadrangles, Polk County, Oregon: Oregon Department of Geol-
ogy and Mineral Industries Bulletin 35, scale 1:62,500.

. Baldwin, E.M., Brown, R.D., dr., Gair, J.E., and Pease, M.H., dr., 1955, Geol-

ogy of the Sheridan and McMinnville quadrangles, Oregon: U.S. Geological
Survey Oil and Gas Investigations Map OM-155, scale 1:62,500.

. Beaulieu, J.D., 1974, Environmental geology of western Linn County, Oregon

Oregon Department of Geology and Mineral Industries Bulletin 84, 117 p.

. Beeson, M.H., and Tolan, T.L., unpub. mapping, 1983.
10.
11.

Beeson, M.H., and Tolan, T.L., unpub. mapping, 1989.

Bela, J.L., 1979, Geologic hazards of eastern Benton County, Oregon: Ore-
gon Department of Geology and Mineral Industries Bulletin 98, 122 p.

1981, Geology of the Rickreall, Salem West, Monmouth, and Sidney
72-minute quadrangles, Marion, Polk, and Linn Counties, Oregon: Oregon
Department of Geology and Mineral Industries GMS-18,

Bristow, M.M., 1959, The geology of the northwestern third of the Marcola
quadrangle, Oregon: Eugene, University of Oregon, M.S. thesis, 70 p.
Brownfield, M.E., 1982a, Geologic map of the Sheridan quadrangle, Polk and
Yamhill Counties, Oregon: Oregon Department of Geology and Mineral Indus-
tries GMS-23, scale 1:24,000.

1982b, Preliminary geologic map of the Ballston quadrangle, Oregon:
Oregon Department of Geology and Mineral Industries Open-File Report
0-82-2, scale 1:24,000.

Brownfield, M.E., and Schlicker, H.G., 1981a, Preliminary geologic map of the
Amity and Mission Bottom quadrangles, Oregon: Oregon Department of Geol.
ogy and Mineral Industries Open-File Report 0-81-05, scale 1:24,000.
1981b, Preliminary geologic map of the McMinnville and Dayton quad-
rangles, Oregon: Oregon Department of Geology and Mineral Industries
Open-File Report 0-81-06, scale 1:24,000.

Frank, F.J., and Collins, C.A., 1978, Ground water in the Newberg area,
northern Willamette Valley, Oregon: Oregon Water Resources Department
Ground Water Report 27, 77 p.

Gandera, W.E., 1977, Stratigraphy of the middle to late Eocene formations of
southwestern Willamette Valley, Oregon: Eugene, University of Oregon, M.S.
thesis, 75 p.

Goldfinger, Chris, 1990, Evolution of the Corvallis fault and implications for the
Oregon Coast Range: Corvallis, Oregon State University, M.S. thesis, 129 p.
Hampton, E.R., 1972, Geology and ground water of the Molalla-Salem slope
area, northern Willamette Valley, Oregon: U.S. Geological Survey Water-
Supply Paper 1997, 83 p.

Hart, D.H., and Newcomb, R.C., 1965, Geology and ground water of the Tual-
atin Valley, Oregon: U.S. Geological Survey Water-Supply Paper 1697, 172

Pp.
Hoffman, C.W., 1981, A stratigraphic and geochemical investigation of ferrug-
inous bauxite deposits in the Salem Hills, Marion County, Oregon; Portland.
Oreg., Portland State University, M.S. thesis, 105 p.

Leonard, A.R., and Collins, C.A., 1983, Ground water in the northern part of
Clackamas County, Oregon: Oregon Water Resources Department
Ground-Water Report 29, 85 p.

Maddox, Terrance, 1965, Geology of the southern third of the Marcola quad-
rangle, Oregon: Eugene, University of Oregon, M.S. thesis, 64 p.

Madin, I.P., 1990, Earthquake-hazard geology maps of the Portland metropoli-
tan area, Oregon—Text and map explanation: Oregon Department of Geology
and Mineral Industries Open-File Report 0-90-2, 21 p.

Miller, P.R., and Orr, W.N., 1984a, Geologic map of the Scotts Mills quadran-
gle, Oregon: Oregon Department of Geology and Mineral Industries Map
GMS-33, scale 1:24,000.

1984b, Geologic map of the Wilhoit quadrangle, Oregon: Oregon
Department of Geology and Mineral Industries Map GMS-32, scale 1:24,000.
Orr, W.N., and Miller, P.R., 1984, Geologic map of the Stayton NE quadrangle,
Oregon: Oregon Department of Geology and Mineral Industries Map
GMS-34, scale 1:24,000.

1986, Geologic map of the Drake Crossing quadrangle, Marion County,
Oregon: Oregon Department of Geology and Mineral Industries Map
GMS-50, scale 1:24,000.

Piper, A.M., 1942, Ground-water resources of the Willamette Valley, Oregon;
U.S. Geological Survey Water-Supply Paper 890, 194 p.

Price, Don, 1967, Geology and water resources in the French Prairie area,
northern Willamette Valley, Oregon: U.S. Geological Survey Water-Supply
Paper 1833, 98 p.

Schlicker, H.G., and Deacon, R.J., 1967, Engineering geology of the Tualatin
Valley region, Oregon: Oregon Department of Geology and Mineral Industries
Bulletin 60, 103 p.

Schlicker, H.G., and Finlayson, C.T., 1979, Geology and geologic hazards of
northwestern Clackamas County, Oregon: Oregon Department of Geology
and Mineral Industries Bulletin 99, 79 p.

Sherrod, D.R., unpub. mapping, 1985.

Thayer, T.P., 1939, Geology of the Salem Hills and the North Santiam River
bast reas Oregon Department of Geology and Mineral Industries Bulletin
15, 40 p.

Van Atta, R.D., unpub. mapping, 1985.

Vokes, H.E., Myers, D.A., and Hoover, Linn, 1954, Geology of the west-
central border area of the Willamette Valley, Oregon: U.S. Geological Survey
Oil and Gas Investigations Map OM-150, scale 1:62,500.

Vokes, H.E., Snavely, P.D., Jr., and Myers, D.A., 1951, Geology of the south-
ern and southwestern border area of the Willamette Valley, Oregon: U.S. Geo-
logical Survey Oil and Gas Investigations Map OM-110, scale 1:62,500.
Walker, G.W., and Duncan, R.A., 1989, Geologic map of the Salem 1° by 2°
quadrangle, western Oregon: U.S. Geological Survey Miscellaneous Investiga~
tions Series Map I-1893, scale 1:250,000.

Wells, R.E., Niem, A.R., Macleod, N.S., Snavely, P.D., dr., and Niem, W.A..
1983, Peliminary geologic map of the west half of the Vancouver (Washington-
Oregon) 1° by 2° quadrangle, Oregon: U.S. Geological Survey Open-File
Report 83-0591, scale 1:250,000,