STATE OF OREGON

DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES 702 Woodlark Building

Portland, Or�on

G M I SHORT PAP.KR �

RICO.. !ISSANOE OIOLOGT 0' LIKIS!ONE DEPOSI!S

IILLAYI!!E VALLEY, OREGON

John Eliot Allen Geologist Department ot Geology and Mineral Induatriea

•I.

State Governins Board

W. H. Str�er, Ohairaan •• • • • Baker

liel R. Allen •••• • Grant• Pa••

s. H. Williaton • • • • • • • • • Portland '· W. Libbe7 Director

Prioe 15 oenta FOREWORD

The need tor cheap agricultural liaestone in the lillamette

Valley was the incentive tor the study which this report represents.

Such stone is cheap only it low in cost per unit ot carbonate or neutralizing value. Therefore, the low carbonate limestone• ot the lillamette Valley are not cheap ooapared to -uoh higher grade •tones troa IOUthWettern and QOrthtaltern partl or the ltate. Btoault or low neutralizins value, lillaaette Valley deposit• have area• oC diatribution reatr1cted to a relatively ••all radiul in ooapetition with higher arade stone.

One ot the oDJeots ot the study was to aearoh Cor deposita higher in grade than the known liae1tone bed• at Dallas and Marquaa.

Higher grade atone ooaparable in quality to deposits in the eouth· western and northeaetern parts ot the etate was not round, and it

1eems likely that all the liaestonee or the lillaaette Valley are geologioally aiailar so that the ohanoes ot finding hisher srade

1tone in quantity in the valley are extr8aely poor.

1. I. Libbey,

Direotor COI!II'fS

Po reword

Introduction l

Geological setting 1

Summary ot deposita examined • ...... 2

Description ot deposita ...... 2

Dallas deposit ...... 2

Uarquam deposit • ...... 5

Buell deposlt • ...... '

Amity deposit •• ...... 11

Bibliography • • • • • • • • • • • • • • • • • • • • • • • , • • 15

TABLES

Table 1. Analyses ot some lillamette Valley limerook samples l2

Table 2. Summary ot lillamette Valley looalitles ••••••• 1.3 - l'+

ILLUSTRATIONS

Opposite E!l!

" 1. Index map ot lillamette Valley limestone deposita •• l

II 2o Areal map of Dallas and Uarquam limestone deposita •• 5 " 3· Lime Products quarry drill hole sections and analyses ., " '+. Areal map of Buell deposit • • • • • • 0 • • • • • • ' Plate I

- DEPARTMENT OF GEOLOGY Be AGRICUL TURA L l MINERAL INDUSTRIES LIMESTONE in the

WILLAMETTE VALLEY

LOCATION OF DEPOSITS

Important deposits 0 Small deposits 0

�CALC-• 1.000.000

Sc.ele• .,• uu .. ... I

e.AeC MA� P"Uit,..I.HCO .,. aTAT! HIGHWAY DE.. AftTMI:NT INTRODUCTION

The soils or the Willa••tte Valley �•quire l,ooo,ooo tona or &g�ioultu�al liaeatone to neutralize acidity� they will need 4oo,ooo additional tone annually in order to aaln• tain thea in that oond1t1on and to provide oalciua tor growing crops. !his stateaent waa aade by Dr. R. E. Stevenson or Oregon State College in the Oregonian ot Dtoeaber 24, 1'44.

Earl� in 1'40 the Oregon Department ot Geology and Kineral Industriea undertook a field survey of the ooourrenoes or limestone in the 11llamette Vallt7 with the obJect of deteraining what deposita aight be utilized at leaat in part to till the need tor agr1• cultural atone. lart1ae application ot Departmental energies to the atudy of aore atra­ tegio •inerals has postponed publioation ot thia report.

During the rield survey , metallurgical testa were made in the laboratories or the Department and by the U. s. Bureau of Uinta to deteraine, insofar &I raeilitiee pera altted, whether the lowAgradt llaeetont or the valley could bt beneficiated. !he reeulte 1 were published in 1'40 as G.M,Io Short Paper Ho. 4 by Clemaer and Cltmaona •

The survey or the Dallas, Marquam, Amity, and misoellaneous dtpoaita vas made by the writer in 1'40, and the Clear Creek deposit was visited early in 1'46. The report on the Buell deposit was revised by 1. D. Lowry and R. So Mason or the Department's atarr who exaained the deposit in March 1'46. Aoknowltdstment is made or the gener9us assistance

or Messrs. To T. Leonard of Silverton and J, B. By waters of Dallas in the eompilatiea of data on the Marquam and Dallas deposits.

GEOLOGICAL SiTTING

The lower 11llamette Valley is a relatively level plain• troa S to 2S ailea wide and aore than 100 ailea long, which is interrupted here and there by low rolling hills and north- and northwest-trending ridgea. A tew spurs troa the adJoining Cascade Range to the east and troa the Coast Range to the w .. t extend out into the valley and break it• aonotony.

!he Willaaette Valley ia in part a downwarped structural basin, in part the result ot erosion by the river and its tributaries. The floor ot the valley is largely covered with Pleiatooene and Recent gravels� sands, and silts. Pleistocene terrace deposita also ooour up to an elevation ot seve�al hundred teet along the valley bordere. Bedrock in the valley is predo•1nantly ooaposed ot gently east�dipp1ng lowe� 7ert1ary eandatones and shales, with some tufts and breocias along the eastern and southern bordere. Basaltic tlowe and intru­ sion• out through or are interbedded with these sediaents at a number ot plaoes.

The Coast Range on the west 1a essentially a broad, irregular, and more or leas ooapll­ eated aroh or told in lower Tertiary eedimenta, basalt flows, and agglomerates. last ot the valley, in the Cascade Range, the sediments 1�tertinger and grade into fragmental volcanio material. They are there ovtrlain by lava flows with vary ing amounts or interbedded tufts and breccias.

th• great series ot sandy and ahaly sediments, totaling nearly 2 ailes 1n thickness, which makes up the bedrock of the Ccaet Range and lillamette Valley, was deposited in or near shallow seas, the shores ot wbioh tluotuated bu� were probably never tar troa the present eastern border ot the valley. The ancient volcanoes ot the Cascades were at the aaae t1ae active, and the aaterlal troa thea beoaae interbedded with the aediaents along the ahoreline; the finer ashy •aterial was added to the sediaents laid down in deeper water•. In certain eabay•ente ot theae seas favorable conditions occurred, although not frequently,

tor the grovth et aarine organi••• with calcareous ehelllo These organic reaains piled up in the embayment• ts appreciable thickneseelp and were later oonsclidated te tor• lenssshaped depesits wlth a relatively high liae content? resulting in the enly liaeatone depesit• ot

1 Referenoea at end ot paper. •�batantial lilt in the valley, Caloitt alao ooour1 in low oonotntration aeaooiattd with and inoludtd in tht baealt• and pyroolaatloa at aevtral plaota along the weatern •41• ot the valle7•

SUMMARY or DlPOSI!S lXAWINID

fwtnt7•tlvt looalitlea reported to contain li•eatone were viaitedo Only to�r ot theae gavt tvidtnoe ot btlng or auoh 1111 and grade aa to warrant prteent oonaidtration aa poaai• ble aouroea ot oo•••rolal agrioult�ral ll•tltont. Detailed dtaoriptlona or th••• tour de· poaita art civen in tht following pag••· the other reported ooourrtnotl art rtoordtd a• to loeatlon, oharaoter, and arade in an aooo•panyins table.

Llatltont bttwttn Dallal and Palla Oity ln Polk County la tor oonvtnltnoe called tht Dalla• depoalt. It ia the only ont which hal probable re1erv11 or tht order or ten• ot allliona ot tona. the aaJor part ot the dtpolit ia owned by tht Oregon-Portland Ctaent Coapany, fht Li•• Produotl Co•pany (whloh alao ownl the Karq�a• depolit looattd abo�t 1 •llt north ot tht Marqu.. poet ott1ot) oontrole •oat or tht re•aindtr• Apparently that portion or tht dtpoait owned by tbt latter ooapanr ia aoaewhat hlghtr ln aradt1 and ia 1old tzoluaivtly tor &lrioultural purpo•••• fht Ortgon•Portland Ctatnt Coapanr•• dtpolit 11 beinc q�arritd wholly tor tht aanutaot�r• ot otatnt at 01wego near Portland,

fbt Karqu.. dtpo•it � oontaln a ttw ailllon ton•� but the aaount hal not bttn proved, fht oalolua oarbonatt oonttnt varlte oonaidtrably ln dlCCtrent part• ot tht dtpoa1t.

Ind1oat1ona art that the Buell deposit ln northern Polk Co�nty avtragtl aort than 50 percent oaloiua oarbonatt wlth rtltrvtl whioh •ay bt •odtrattly lara• but have not been proved.

fht A•ity dtpoait 1n northtaatern Polk County, although or talr sradt, appear• to be ••all and ha• a heavy ovtrb�rdtn. It ia probably not ot ooaatroial value.

DESCRIPtiON or D£POSifS

Dallal depo1it Polk County

OWner• and area: Ortgon•Portland Ceaent C oapany, 111 S,l. Kadiaon Street, Portland 14,

Oregon, (925 aore•)• Llat Produota Coapany, Dallaa, Or egon, (186 aorta). 1. w. Saith1 G. r. MoBtt1 and George Oohrkt, all ot Dalla•, Oregon, all� own land ln part, at leaet, underlain by liaeatone,

Looat1on¥ fhe Dallal liae1tone btd oropa out 1n the northealt portion ot t. 8 s., a. 6 W., troa 2 to 4 alle1 1outbwe1t ot Dallal, Polk County, on the •••tern edge ot tht Willaaettt Valley. two quarritl have been developed, tht north quarry by tht Orecon• Portland Ce•ent Coap&ft7 in the northweat oorntr of Ito. 12, and the aouth quarr7 b7 tbe

Liat Produota Coapany near the oenter ot tbt eaat edge of •• • · 11. Li•••ton• po11lbl7 underlitl a lara• part ot a �rao� ot nearly 1000 ao�•• in �ht zi ot ••o• 11, tht BWt ot Ito. 12, and tbt Si and Kli ot aeo. 1. lt aay al1o ooour in the extr••• northwtlt oorner ot aeo. 1, aouthtaat corner or Ito. 2, and in the northtalt oorner ot •••· 14.

Dtvtlopatnt; fht Oregon-Portland Cement Comp&nJ quarry now oovera an area of aore �han 5 aorta; tbt quarry ot tht Li•• Produota Coapany, a halt a •ilt 1outh la auoh ••aller, oovtring l eaa than � aorta. !he tao• ln tht tor••r varle1 up to 50 teet in heigh�; the la�ter up to 30 t•tto Both quarriea art aervtd by a 3•ailt railroad apur; tht Ort1on• Portland Ctaent Coapany haa an additional halt ai1t or narrow aaugt traok fro• quarry to eruaher and bunkera. Topography and miscellaneous: The limestone btda occupy the western alopea ot two aaall valleys which drain in opposite direotiona, north into Rickreall Crttk and south into tht Little Luokiamutt River. The local relief it about 300 teet; the alopea art

1•ntle. the north quarry ia about 600 teet in elevation; the south about 500 teeto

Gtololf: the limestone oocura at tht baa• or a marine atrita or Cowlitz age, (Schenk, 1936) ooapoatd largely ot tuttaceoua aandetQnea and ahalea which dip gently to the east and south. The limestone horizon ia at ltalt 75 teet thick at tht south quarr� (although only 50 teet ia exposed) and mort than 50 teet thick in the north quarry where basalt, btlitVtd tO bt tht tquivaltnt Of tht tillamook VOlO&DiOI1 (Jarrtn1 1945) ia tXpOitd in the floor. Poeaila troa the limestone h�ve been identified by Stoktebary (1934).

Dallas limestone crops out a• a dark gr'1, maaaivt rook, which weathers first to a light butt oolor, and then to deeper ahadea or iron-oxide redo fht porous, brown Iandy rtlidual a�ttrial il developed,tirst by IOlution of tht liat1 tbtn by alteration of tht tuft graina. !ht weathering profile al txpoeed in the quarries coneieta ot a red clay soil troa 21410 feet dtep, followed by porous leached limestone trom 2 to 6 teet thic� This zone tXttnda dOYnY�rd �r several ten• or teet into the llaeatont alon, Jolnt planta, as Yell as outward trom the Joints along btddlnl• the m4ln Jolnta ooour ln 2 atta, tht first atrikea nearly north, and the second atrikea eaat. they art 1p�ctd trom a tew teet to tens ot teet apart. Beddins is beat ahown by lisht and dark bandins rather than by btddlng plant atparationa. Btds in the south quarry dip up to 14• to the south, in the north quarry about s• east. the regional dip ia sentrally easterly, at low anal••·

Hand ltna exaaination ot treah aptciatna lhowa the rock to be composed ot eubangular grains ot calcite, rounded grains ot quartz and teldsp�r, and occaeional eaall eubhtdral crystals or pyrite all ot which lie in a very fine-grained kaolinitic aatrix. the average size or the larger grain• ueually doea not exottd 1.0 aa (1/25 inch) . the larger iraine occupy aore than 50 percent ot the vcluae ot the rook.

In thin eeotion the Dallas liaeltont ia aeen to be a sedimentary rook originally composed or liay lhtlls or toram1nitera (minute, mainly marine, or*aniama) and larger shell trasaente in a aatrlx or tand and •hale oompoaed ot feldspar, a tew quartz grain•, and clay. It baa undergone some recrystallization ot the oaloiua carbonate and kaolln­ ization ot the teldepath1o sand grainto Caloium carbonate la now distributed through the rook as calcite oryatala, eubhed�al ln outline and rarely exceeding 1 •• in length, and as partlolea lett than Ool am in siz e ln the kaollnltio matrix. It alto occur• aa caloareout ahtlla ot toraminitera. Many ot thtlt ahella have been obliterated by the recrystallization ot the calcium carbonate. Others reaain aa mere outline• in eubhtdral oryetala et oaloitt. the average tizt ot tht trlglnal toraalnittra wa1 2 ma. Other ainerall large in grain size a�e ltnondary pyrite, well-rounded quartz and teldapar graiaa, a tew grain• ot blotlte mica, and magnetite. A very tine-grained kaolinitic matrix liea between the larger grains. The kaolin or thia matrix il in part ooaaen in trigin with the ether ltdiatntary mineral• in the rook and in part toraed by the alteration ot ttldapathlo land graiaa.

Mineral Coapoelt1on tt Dallas Limestone Percent

Calo1tt (oryetalline oaloiua carbonate ) Foraminifera and frasaental shells 2� Pine-grained ( origlnal) 5 Recrystallized (eeoondar7) 40

Feldepar (kao11nized ) 10

laolln 15

Pyrite 5

Uagnetite 1

Other minerals ( quartz, biotite, garnet, and aioa ) 4 Total 100 Piate 2

T-ophy by 29th Enai_., U. S. Army, U. S. � Sunooy,

R. I E. DALLAS and MARQUAM LIMESTONE DEPOSITS

Approximate extent / Basalt contact/ 1 Scale «mii! The aeoondary nature or auoh or the oaloite, ooabintd with the reported lower srade or li•••tont toward• the baa• or the lena, auss••t• that the hisher sradt ot the upper portion ot the depoait ia in part, at leaat, due to enriohaent by aolution and radepoaition.

50 Gradt and reaervea: The atant variea in caco3 oontent troa 1••• than to aa .uoh aa 80 perotnt. It ia aaid that a aradt or aore than 70 percent oan be aaintain•d at the Liat Produota quarry by hand piokin&o Aooordin& to J. 8, 87Yatera1 auptrintendent ot the Ortson• Portland Ctaent Coapan71 atone rroa the north quarry averas•• aa ahipptd about 55 percent caco • 3 Available reaervea in the Dallal dtpoait art aodtrattly large. Alliaon (1,33) eati· aatea nearly halt a aillion tona ot atone aa aootaaiblt to the preaent Liat Produota quarry; �h• auoh greater extent ot the depoait to the north hal bttn tairly well proved. Tht Oregon Portland Ceaent Coapany quarry haa been produoins at a rate ot 200 tona a d'71 and the auperintendent teel• that 20 year• operation on other parta or the property ia a con� ••rvativt eatiaate. Thia would aaount to a reaervt ot a little aort than 1 aillion tona adJacent to the northern quarry,

The quarry ot the Oregon Portland Ctatnt Coapany ia ltrvtd by a )•aile rail 1pur troa a branob ot the Southern Paoitio RallY� near Bridgeport. Stone ia hauled troa the quarry to bunker• by aeana or a gaa loooaotivt over halt a aile ot narrow gaua• traok.

At the quarry ot tht L1at Produote Coapany ltont hal bttn lhOVtltd by hand into truoka and haulAd about 200 yardl to a bunker whioh aervta the oruahing plant.

Three drill holta iaatdiattly north and taat of the Liat Produota quarry (ate plate 3) 1howed that the btd wa1 at ltalt 70 teet thiok at thil point and that the grade or the 11••· 70 40 atone dtortaltl with depth troa aore than ptroent Oaoo3 to about ptroent within thia thickntllo

Marquaa dtpoa1t Claokaaaa County

�: T. T. Leonard, Silverton, Ore1on.

Location: Sto. 21 T. 6 s., R. 1 1., Olaokaaaa County, 1 ailt northeaat ot Karquaa. Two depoaitl wert exaaintd1 one in the center ot tht HI! ot •••• 2 and one in the center ot the Si of tht aaae ••otion, Eoktl (1913) reported 11aeatont near M&rquaa undtrlyinl "a narrow area or ptrhapl 100 aor••·" Hodlt (1,38:368) report• a dtpolit in the HW! ot aeo. 2 and Mli or aeo. 3 oovtrina 10.38 aortl1 and another in the Sl! •J! Ito. 2 cover• ing ).,6 aorta.

Topocraeh¥: Tht depoaitl lit upon the gentle weat alope of the aain north-trendina ridge, at elevation• varyina troa 325 to nearly 400 teet. Tht country il open, with only a ttw oluapl ot oak and fir. Kuoh ot tht area 11 cultivated,

GtoloaY: The 11atltont oooura aa len••• in Iandy turt•, 1rit11 and oongloatrattl, both aaaaivt and wtll•btddtd1 whioh have low dipl to tht Iouth and louthtalto Conaloatratio phaltl overlie tbt 11at ltnltl at two looaliti••• POI1il11 both roraainitera and ••aa• to11il1, indicate Yaqutroa aae, �orrtlativt with the lllah•·Meha .. toraation ot thayer (1')':6•7) and �he Butte Crttk btdl ot Harper (1,411 unpubllahtd aap ot Molalla quadranllt). fht aarine aediaentl intertinser with and are overlain by tht continental Molalla toraa• tion to the taat, but at thil locality they art unoontoraably overlain by dtnle sla117 ta porphyr1tio and aooriaoeou1 balalta. fhtat laval apparently tlovAd nut over a aort or 1••• aaturt toposraphy1 a1 the elevation• ot the oontaot are variable and irregular, fht porphyritift phalt ot tht lava oontaina about 20 percent phtnoo�y•t• (up to 6 aa diaatttr) ot plasioolaat in a dena� blaok aphanitio groundaaaa.

-5 - LIKB PBOD'OOTS QtaRRI Drill Hole Sections and .Anaqsee (Percentacea C.COS)

Depth in teet B c

495' 520' 5151 0 n. El, El.

OYerb\U'den

10 52.�

- 1 - -, 69.9 - 70.9

61.6 20 A .·· A Broken .· : _ -- _ 4 •hal• 4 :.' t .... 75.6 and- u.... 72.5 76 9 66.9 t-. 76.5 --•ton• 7�.0 !() 72,2 90,5

42.8 -t56,4- - 67 6 1 . 40 -t- 55.5 79.5- 59.7 t 54.5 t- 50 .w.s _l ___ 86,9t-

45.4+-

60

Location or hole• " " 40.0 Pro - perlJ t- B 70 t- l ,,1 _ ___ \, •.�: \ � ' m � / line � / OYerburden '" / [] / c II \' / 1 • • QuarrJ / -;.,. D. Sand � 100 200 0 Limeetone reet The liaestone is ooapoled of broken shells, laraely laall oyttert, and is aore accurately described as a shell aarl whtoh has been loaohod at the aurtaoo (as woll as ln aoae interbedded horizons ) and oeaentod below tho water table by tho dissolved liaeo lellarounded andesltlo (1) cobbles aro associated with the lia11tone, aubatantiatina ita near•ahoro origin. the aeoondaril7 enr1obed zone, uauall7 leas than 5 toet th1ok, 11 the "hish-srade," and run• aa h1sh a• 65 peroent Caao , whtll tho •priaary aone" below , is onl7 25 percent Cac o • fhe leaohed zone near the 1urtao1 is vor7 low in ltao content. 3

loono•to• and developaent: The northern depollt waa toatod, aooordlns to Hods•

(1,36:268), by 14 drill holll &Yiraglnl 14 flit in depth, &Dd an &Yir&ll thickness or ' teet was estl.ated to sive roservo• of 5 a1111on tone •••arlna 70 percent caco3• Uore recently the two depoatt• exaainld were asain drilled b7 tho proaont owner. Saaplos were taken in 5i foot lenstha, in 13 boles averastna 11 toot ln depth. Roaulta or 2 analyses of Iampl•• are &I tollowl:

Hole Sample Thlokneu Looatlon and CaO caco3 � No. No_ ln rut ooordlnatea• f (oalou1ahd) 1 0 5·5 Hole 70 rt. s. of houae

2 5·5 ° 12 (340•H - 4oo • l)

B 0 Hole 100 tt. sw. ot houae

(�501H • 2,0•1)

c 0 5·5 Hole '0 ft. W. of bou11 2lf.o ,0.2 5·5 - 12 near reno• (460•1 • 2'0'1) �2.2 2.3.8 (Compol1te aa•ple a1saya �.2 peroent MICO�)

D 5 Hole 210 tt. SW. ot houat 24.4 4).6

5 -' (20011 • 2'0'1) 20.6 )6.8

E 0 3 Hole 400 tto SW. ot bouae 48.7

.3 6 (140•N • 130'E) �2.7 6 - 10 }6.,

p 7 0 - 12 Pit 120 tt. NE. ot barn .35o72 (751Jf - 280•1)

G 6 0 5·5 Hole 25 tt. 1. ot will at 20.6 '" 5·5- 12 hOUII (4501B • �50'1) 17.1

• Coordinates ••a•urod froa a point 1'0 feat wost ot tho northwest oornor ot the barn at the •outh odae or tho area b7 tho road.

L1•oatone was ained for several aontha ln 1'4.3 and around on the property ln a haaaor a1llo An area JOO teet lons and nearl7 100 teet wldo waa •tripped or 2 to 5 toot or aoll and leached rock overburden; the open out la soao '0 b7 40 teet lona and 8 teet deopo

Mr. Leonard repo rts that by careful sortln& the avlr&&l arado waa aalntatnod a• b1gh &I

60 peroent caco , and that aan, •••ar• troa lndlvldu&l atr&t& •••• hlsher than thta, ono 3 running •• high •• 7,.6 percent caao,.

------

-7- PLATE 4

INDEX MAP 0 2000 4000

FEET

t / / '1-/7-"' / l- /2 .,_ 7,7 I �.,.,., I / / I ./..:Y: ·,(4

;··· ·. / I / Polk Count;,

�e Buell L1me Products Company, a closed corporation made up ot A. H. Duncan, preaident. 12 Ladd 4 Buah Bank Building. Salem; William A. Duncan; Charlea A. GoodwlnJ and Willi�• M. Goodwin, ln charge ot quarry operation•.

�: H. W, Schmidt, Route 1, Sheridan, Oregon, tormer�y the T. Bo Stone ••tate.

Location and area, The depo1it is about 2 mllel welt of Buell and )i all•• aoutheaat ot •illamina. It llea a short dlltanca aouth ot State Highway 22. The property oontalne 750 aorel in 1ec1. 1,, 20, 2, and )0, t. 6 S., Ro 6 1., W.M. Prom the property lt il 2.6 allea northwest by way ot State Highway 22 to ita Junotlon with State Highway 18 at Wallace Bridge OYer the South Yamhill RiTer. A bPanob ot the Southern Paoitio Railroad roughly parallels State Highway 18. The area i• drained by a aaall or18k whloh tlowa northward into the South Yaahlll Rlvar.

History and deyelopment: The deposit was noted by Hodge (1,)6:267) who atated that the Oregon Portland Cement Company investigated the ooourrenoe ln 1,32 and reported that the average content of �aloium carbonate of G&terial trom six drill holaa1 with an aTeragl depth ot 44 teet, was 27.16 percent. J, E. Allan. Department geologi1t, exaaintd the de• po•it ln 1'40. Allen (1,40) reported that the limestone bed 1triktt N. 6o• - 70• w. and dlpa 6• - 10• N. 1. Operation by Buell Llae Product• Coapany bt1an Ftbruar;r 11, 1'�'• and the tir•t work oonaiated ot putting down 13 diaaond drill holtl along the etrike ot the liaestone bed. By Karch 6, 1'46, quarrying operation• had begun and Yllliaa M, Goodwin, in charge, eatimated JOOO tons of limeatone had been quarried. A well•gravtltd road hal been built to the aite ot the bunker� (sea plate 4) which are beine conatruotldo Equip• aent being used in the development of the property lnoludea two bulldozer•, an air ooa• pressor, and Jaokhammera.

Geology: The limestone crop$ out 1n many places on a dip elope south ot an inter• alttent northweat•rlowing creek (ue plate. 4). The bed atriku N. 60° W. and dlpe 6• to the northeast. The areal ext�nt 11 not known, although !ts axtenaion 1outhward probably could be deter111ined easily as the�� is little �r no overburden in that direction. tht limestone beds dip northwa�d under a belt or tuftaoeou1 shale whioh is expoaed in ths highway outs and whioh forms the heavy overburden east �t th• quarry. On the weat the limestone abuts against a basalt'-·• hHl, a• indicated by Allfln (1940). Ba1alt 11 ax• posed alQng the northe�n ba•� of this hill in the h�ghway euta, where it appear• to be overlain by the same tuttaoaous shale aa that whloh OTerliea the li•eatone tarthar aaat. Baaalt may disconformably underlie the limaaton•• but no angular ralationlh1p oould be determined from the available expoaurea.

Recant drilling shows that the limeatona bad hal an average thicknasa ot abo�t 20 feetJ in one holt it attain• a thioknesa of 26! teat. Drill corea indicatt that the limestone is underlain by greenish sandstone whioh may be similar 1n obaraoter to that exposed in the east bank of the South Yamhill River 2.6 mllea to the west at the Junction ot State highway• 18 and 22. There a rather massive limy bad ln the upper part of the bank overlies bedded dark-colored grita whioh have an apparent dip ot 11• to the eouth.

The Buell deposit is somewhat sim1lnr in appeara.nce and oolllposition to the Dallas limestone deposit• lO.S mile• to the southwtat, and both appear to lie diloontormably on older basalt. Although tosalls ooour in the Butll limestone, no attempt has been made to collect nnd identity thea. If the Buell deposit doea oooupy a atratlaraphlo pos1t1on similar to the Dallas llqestone, it would be ot upper Eooene ac••

The ltaeatona 11 aa1s1ve and slightly Jointed. It 11 a danae gray rook with both oarbonaoooua and clastic fragment•• The rook weathers brown near the surtaoe and an;r samples taken from outoropa may not give a true indication of ths grade or the dapo•it.

JR:p:r: �y-W�D�L:w;y-a:d-R�S�M:s:n� �r:g:n-D:p:r:m:n: :r-G:o�o�-a:d-M�n:r:l-l:d:s:r;e:. Anal71t1� ot IIYtr&l l&llpltl art ... tollowl: Ntutrallz1ng CaC03 • Saap1t No. DtlorlptiOD CaO 11&0 SlOz valut (o&louldtd)

P-4525 62 tt. oh&nntl laap1t 27.72- 2.16- 2,.06- 5).,1. If,.� troa taot ot quarry

P-�526 Grab laap1t taken near 27.�2 1.�1 )7.40 52. 1� 4,.0 aldd1t ot abo•• ohannt1

·-�527 Grab •••ph taken ntar �2.77 1.25 1�.10 78.,1 76. � holt 1

P-�528 Grab 1aaplt taktn ntar 28.73 2.8� 24.,4 57.04 51.) holt 3

" P-�52, Grab l&llplt taken ntar 35· 2.00 18.58 68.17 64.1 holt 5

Tht Buell Llat Produota Coapaft7 lubaltttd two ooapoaltt lallpltl ot tn• diaaond drill oor•• troa holt• 1 .to 10 1no1ui1Tt to Char1toD Laboratoritl ot Portland tor anaq111. The rttu1t• art 11ated ln the table btlOWJ NtutraU&lng CaCO? '{. Saaplt dttorlptloD CaO u.co Ta1ut (oa.lou atad)

1. A••r•c• aaterial, ho1e• 1 to )2.� 1.�7- 61.6'{. 57·1 10 lnoluaive

2. "Hlgh•arade" aaterlal, holt• )4.) 1.21 6).6 61.2 1 to 10 inolu11Te

). Core troa hole 13 �).8 0.,5 80.2 78.,3

Tht toll owing 1• a record ot the dlaaond dr1l11nc reaulta turnlahtd by 11!11&11 M. Goodwin:

th1okuu ot Holt No. Depth UautoDe Rta&J:"k8

1 1' 1' tt. Bottoaed in Uaeatone

2 2l 21 " " "

3 20 20 " " "

4 1' H " " It

5 25 20 Bottoaed in "grteniah oountry rook"

6 24 1' do

7 1' 14 do

8 21 20 do

' 21 20 Bottoatd in Uautone

10 2' 18.5 Bottoatd in oountr7 rook

11 18 18 Bottoaed in Uautont

12 22 22 " .. It

1) 24 23.5 Bottoaed in oountr7 rook ------4 ------17 L.L. Hoagland, ohtaiat, Oregon Departaent ot Oeo1o17 and Mineral lnduatri•••

·10- AI indicated by the Buell Liae Product•• Company'• diamond drilling prograa, the thiokne11 of the liae1tone il rather uniform along the •trike of tho bod between hole 13 on the eaet and hole 4 on the weet, a di1tanoe of about 1500 teet. Outoropl indicate a continuation ot the liaeetone northward troa the drill hole• to the oreek where the bed dipe beneath 7ounaer eediaent•.

A1suaing that the liaeetone bed hal an average width of 300 teet between hole 13 on the east and hole 4 on the welt (a1 indicated by drilling and outorope) and an average thickn••• ot 20 teet, a total of � aillion cubic feet of liae1tone 11 indicated. !he aealured lptoific aravity of the li•••tone froa the quarry tao• il 2.3. !hul a total or 6451 840 abort tone of llmeatone i1 indicated.

Altualng that the liaeatone extenda froa the oontaot northweat of hole 4, at ehown on Plate 4, and u•ing a width of 600 feet ( troa the creek to 50 feet above the hole farthelt up the llope) an inferred tonnage of 1, 5501000 ton• it obtained.

It the ll•••tone bed extend' •outhward the amount of liaeatone available in the deposit aay be appreciably greater. Quarrying of any eastward extension of the liae• atone bed would be hindered by a progresaively thickening overburden.

Wr. Goodwin reported that the liae1tone !n all the drill holel is aiailar in char• aoter, but the only figures indioating the average caloiua carbonate content of the liaeatone bed are the reaultl lilted in the preceding tables. !he oalciua carbonate content of the •ample• from the unweathered quarry taos is low�r than that of the eaaple1 troa outcrop• and eugge1t1 a �onaiderable variation in the grade of llaeatone in places. However, ae indicated by the sampling to date, moet of the li�estone con­ tains aore than 50 peroent total carbonatee.

Amity deposit Polk County

�� J, c. Richlie, Amity, Oregon,

Location: Three miles Iouth of Amity in the foothills of the Eola Hill• about one aile eaat of the Pacific Highway (U.S, ��I) in the NEi eeo, �. T. 6 s., R, 4 w.,w.M., at an elevation of about 225 feet, north Geology: One and poesibly two limestone lens•• strike/and dip a few degrees weat down the elope. !hey are expoaed for only a few teat in thieknesa; the lower contact is covered. The liaeatone is interbedded with a fine-grained white fossiliferous tuft which is in turn overlain by a light-colored tuftaceoue sandstone. OUtcrops are soanty and the length of the leneee could not be deterained. !he liae content of the rook 1• 80 Caco , the 1• variable, aoae a1eay1 beins a1 high at percent 3 but average probabl7 clo1er to 50 p1roent. The overburden inoreas11 up the h1111 which probably would aake etrippln1 too expenalve tor a ooaaeroial operation. !he propertr hal not been ade• quately explored, however, and a few teat auger hole• ar1 Juat1f1ed.

Numerous ••all silicified gastropods and pelecypods, found weathered out in the field to the west of the lens, indicate a •arine origin tor the liaeatone lena.

oll� Table 1. Anal;y.. a ot aoae 1111aaette Valley Llaerook Sample•

Name of depoalt Duerlptlon and ntartat town ot rook Lo11at1on CaO CaC03 Insolublt

Btnton Countz: L. Lhn Ranch Green turt- tnri aee. 24, '· 12 s., a. 6 '· 6.0 " 10.7" 58.6" Phlloaath brtoo1a

G.A.N;yun Ranch Gr11n turt- Nl;f Ito. 16, '· 10 s., R. 6 w. 20.7 .)7.0 .35·9 K1nga Valh;y brtoo1a

E. Radford Ranoh Green tutr- Sti Ito. 15, !. 10 s., R. 6 I. 20.8 .)7.2 .35·2 IC1ng1 Valley breeo1a

Claokamaa Countz llarquaa 'l'utraoeoul Sec. 21 f. 6 s., R. 1 '· (s .. text tor anal;yau) llarquaa aarl

Old Klln 'l'uttaceoua SWt leCo 29.o '· 6 s. , R. 2 '· 24.,6 44.0 48.1 Sootta MUh aarl

Lane Countz:

Cheablre O.uarr;y Llae len••• li leo. 15, '1'. 16 s., R. 5 •• 42.7 76.4 13·5 Chuh1re ln abah

Polk Countz:

Dalla• Gray Uaestone '· 6 s., R. 6 I. (See text for anal;yaea) Dallal

G.J.IIoBee Ranoh Gray Uautone NEt a eo. 12, '· 6 s. 1 R. 6 I. 25.4 45.4 29.2 Dallal

Aalt;y lhlte poroua NE;f Ito. 9, '· 6 s., R. 4 •• 43., 78.3 1.4 Aa1t;y 11aeatone Maulve gra;y II It " n " " " ,, .. 27.1 48. 4 19·5 liaeatone Buell

Buell Brown lla;y tuft Seo�.19 and 20, '1'. 6 s. , R. 6 lo (s.. text tor anal;yau) llldwood School Gray Iandy Hoak1nl liaeatone Sec. 2, T. 10 s., R. 7 I. 11.7 20.9 66.6

laahlngton Countz: Clear Creek Caloareou• turr Galea Creek and congloaerate Nl corner aeo. 14, T. l N., R. 5 � 32.1

-12- fable 2. su ..ary of lillaaette Valley Looall�iel

Probable importance ot outcrop Loodi�z Character ot depoalt a• agricultural liae1tone

Ben�on Coun�y; Beaver Creek Quarrz, Calcareoua patche• and nodule• Probably none. Quantit7 lacking. SE! eeo, 10, f. 13 S,, R, 6 1. la -.ad•tone ln �Qarrz taoe.

Lien Ranob, NW oor. •••� 2�, Tuft conglomerate with soae Very doubtful aa liae content f, 12 s., R. 6 1. liae aa1aya 11 percent. Mot very low. extenaive al far a1 could be deterainedo

G.A.Nyaan Ranoh, ME! aeo, 16, Green liay lapilli-tutt, the Very doub�ful aa liae content

f. 10 s., R, 6 W. aecondarz calcite being •pottyJ i• too low and •potty in aaall in extent. Soae aa•az• ooourrenoe. aa hish a• 37 percent.

E. Radford Ranch, center

sJ! eeo. 15, '• 10 s., R, 6 1. Tuff conglomerate with aaall Very doubtful a1 liae content aaounta or lime, ooourrenoe il too low and lpotty in spotty; a••az• leBa than ooourrenoe. 40 peroento

Claokaaas Countz: Coal Creek Llae ().� al. E, ot 10 teet or ahell marl intruded Doubtful; overburden too areatJ Soot�• Mills brldse) center "2 by baealt in quarry. srade too low.

••o. 30, ' · 6 s., a. 2 '·

Uarquaa, eec, 2, t. 6 s., R. 1 E, See text of �•porto

Old Kiln (�.4 at. &. or Soot�• 10 teet ot shell marl. dip• J• Doubtful; overburden too sreat.

Mille bridse) oen�er Sli ••o. 2,, louth•Poutheal� in creek bank To 6 s,, R. 2 E. and in bluff• to north. Aa•aya 44 percent.

Lane County: Chtlhlre Quarrz, lEi IIi leo. fhin lenaea of liae1tone with Very doubttulo Depoait• too thin, 15, T. 16 s., R. 5 I. heavy overburden, aaximua di• dilcon�1nuoul1 with too heaY,r aenaion1 in quarry 1 X 30 tt. overburden. lona. A11ay1 76 percent li•••

lt at, I, of Cbelh1re1 Sli 1ec, Could not locate reported out­ Very doubtful, al 11•• content 16, T. 16 S,, R. 5 I, crop• or calcareoua turr-con• repor ted by Zlaaeraan (27) 1• gloaerate. Rook •bowing in road too low, and probably 1potty outs zeolltic- not oalcareoua. in ooourrenoe.

Luoa1 Ranch, leo. 1, f. 18 s., No outcrops exposed. Soae float Very doubtful. R. 4 I, ot a_,gdaloidal baaalt, but Velicular fillinsa were of chalcedony.

Linn County:

H. Le.rwell Ranoh, 110. 16, No limeltone a1 reported could Probably none. '· 14 s., a. 2 '· be tound. All fine tuft.

Polk County:

Buell, Et leo, 1,, It SIC, 201 See text of report. t, 6 S,, R. 6 I, ·13- Table 2. Summary of lillamette Valley Localitiea (Continued ) Probable importance of outcrop

Looality Character of depolit aa agricultural lime1tone

Polk County (Cont.): Canyon Road, 11c1. 2, 10, Lime1tone with ahale interbeda Poatible; not developed. and 11, f. 8 s. , R. 8 I. outcropping in roadcut1.

Dallal, Nit f. 8 s., ft. 6 I. See text of report.

Luckiamute River, Ito. 20, Only thin oaloite atringera were Probably none. f. ' s., R. 7 I. round along river in lava.

Will Creek, Nit f. 7 S., R. 6 I. fuffaoeoua ahalet to 2 milea up Probably none. creek, then all lavaa.

Aaity, NEt ltc. ,, f. 6 S., See text of report. R. 4 I.

Ellendale, Sit 1eo. 25, f. 7 s., Pooketl or m&rl lying upon Probably none. R. 6 I. baaalt in quarry.

Rickreall Creek, Sect. )4, 35, All tutr and lava for 3 Probably none. )6, and 37, T. 7 s., R. 6 1. aile• up creek.

Salt Creek, NEt f. 7 s., R. 6 I. All tuffaoeoua ahalea and Probably none. baaalta.

Jildwood School, oenter 1eo. 21 Liay tuff aaaaya 21 percent. Very doubtful, overburden too t. 10 S.9 R. 7 I. Probably not over 2-J rt. thick. great. Heavy overburden; below water table.

Rook Creek Pall•, center sec. 26, Bedded shale and limy land• Probably none. Too low in grade. T. 6 s., R. 8 I. •tone. Heavy overburden; Too heavy overburden. Too in­ relutively inaccesaible. acoeaaible. laahin�ton}ounty: Buxton-Vernonia highway, 5' ai. Bed ot gray Iandy lime1tone, Very doubtful. N. or aummit, il. 890 rt. Center 1 rt. thick. i. edge sec. 8, f. J N., R. 4 I.

Cherry Grove, T. 1 S., R. 5 I. Peraiatent report• ot liae­ Not viaited. •tone occurring in hilla weat ot town.

Galton Quarry, SJt aeo. 27, 2 feet toaailiteroua bedl in Very doubtful. T. 1 s., R. 4 I. maaaive bedded aandy tuft, heavy overburden ot rook dipping into hillaide.

J. Pongrat& Ranch (well), Probably none. Center S� 110. 41 To 2 M., R. 4 1. No record on well wa• available to oheok report of limoatone pierced by it. No limeatone outoropa have been found in thla locality.

Soogginl Creek Quarry, Nit 110. 271 1 foot foaalliferoua beds in Very doubtful. T. 1 s., R. 4 I. ma••ive bedded eandy turr. Heavy overburden or rock, dipping into hill•ide.

Clear Creek, teo. corner 10-11, lO·JO feet bed of tuttaoeous Inaooe11ible. 14-15, T. 1 N., R. 5 I. limeatone and limy conglomerate. BIBLIOGRAPHY

Allen, John iliot 1940 Buell lime•tone: unpubli•h•d report, Oregon Dept. Geology and Kin. Indul�ri••·

Alliaon, Ira S, 1933 Report on the property ot Liae ProduGts Coapanys unpublished,

Cleaaer, J. B., and Cleaaona, B. H. 1940 Benet1oiat1on b� tlotatioo ot llllame��� Valle� lim11ton•• in Oreaons Oregon Dept. Geology and Kin. Induatri•• Short Paper No. 4.

lok•l, idw1n c. 1913 Portland Ceaent aaterial and indu•tr� in the United State•: u.s. Oeol. Survey Bull. 522, p. 308-9.

Harper, Herbert, and 11lkinlon, I. D. 1941 Geologio aap or the Molalla quadran1l1: unpublilhtd.

Hodgl, idwin T. 1'38 Market tor Columbia River hydroelectric power u•ing north•••t ainerala: Seo. III, vol. 1, Northwe1t liae1tone1, tar Dept., Corp• ot in11neer11 u.s. Ar�, Ottice ot Divi11on ing1neer, North Paoitio Division, Portland, Oregon.

Sohenok, H. G. 19)6 NuGulid bivalvtl ot the genu• Aoila: Gaol. Soo. America Special Paper no, 4, p. 60-61.

Stoke•bar�, I. A. 1')4 A taunal study ot the Dallas area in an attempt to determine the taunal horizon or horizon• pr111nt and to oorralate with other Oreson and California horizon•: Oregon State College, Malter•• the•1•.

Thayer, Thoaal P. l'J' Geology ot the Sal•• Hilla and the North Santiaa River baain: Ore1on Dept. Geolo&r and Kin. Indu•triea Bull. 15, pp. 6·7·

larren, I, c., Norbilrath, Han1, and Grivetti, R. K. 1,45 Geology ot Northw11tern Oregon, west ot the Willamette River and north ot latitude 45• 15': u.s. Geol. Survey 011 and Gal Inveatigation• Prtl1a. aap 42.

lilliaaa, Ira A. 1,14 Liaestone deposit• in Oregon: Oreaon Bureau ot Mlntl and Geology Mineral re•ouro•• ot Oregon, vol. 1, no. 71 p. 61.

Ziaaeraan, Don Zabrilkie 1,27 Geology ot the Lon1 Toa area: KAlter•• the111, Unlv•r•it� ot Ortaon, pp. 1·62. PUBLICATIONS St�te Department ot Geology and Mineral Industries, 702 loodlark Building, Portland 5, Oregon. BULLITINS Prioe Poetpa id

1. Uinina laws of Orogon, 1942, rev. ed., contains Federal placer mining regulation• • • • • $ 0.20

2. Progress report on Coos Day ooal field, 1938 : F.w: Libbey • • • • 0.10

3· Geology of part of the Wallowa Uountains, 1?38 : C.P.Roaa • • • • • • • • 0.50

4. Quioksilvor in Oregon, 1938 : C.N.Schuette • • • • • • • • 0.50

5· Goologioal report on part of the Clarno Basin, 1938 : Donald �. MacKay • • • •••••(o ut of print}

6. Prolim. Report on aome of the retraotory olaye ot •••tern Oreg. ,•38: Wilson A TreasheP •• {out of print}

7• The gom mineral• of Oregon, 1938 : H.C.Dake • • • • • • • • • • • • • • • • • • • • • (out of print} 8. Feasibi lity of steel plant in lower Columbia area, reviaed edition, 1?40 : R.U.Mlller o.4o

?• Chro111te deposita in Oregon, 1938 : John lUiot Allen ••••••• •••••� • • • • • • 0.50 10. Plaoor minine on Rogue River in relation to fish and fishing, 1?38 : H.B.Ward •• (out ot print}

11. Qoolocy and alneral retouroee ot Lane County, Oregon, 1?38 : Warren D. Smith • • • • • • • 0.50 12. Geology and phytiography ot northern Wallowa Ute., 1'4l s W.D.Saith, J.E.Allen et. al. 0.65

13• Firet biennial report of the Department, 1937·38 • • • • • • • • • • • • • • (out of print} 14. Oregon aetal mine• handbook: by the etaff A. Baker, Uni on, A lallowa eountiee, 1?3? 0.50

B. Gran�, Morrow, Umatilla Countios, 1?41 ...... 0.50

c. Vol. I, Cooe, Curry, Douglae Countiee, ...... (out of print)

Vo l. II, Section 1, Joeephine County, . . . • • • • • • • • (out ot print} Seotlon 2, Jaokson County, ...... 0.75

15. Geology of Salem Hille and north Santlaa river baein, Oreg. , 1?3? : T.P.Thayer (aap only) . 0.25 16. Field idontifioatlon of mineral• tor Oregon proepectora and oollectors,

eecond edition, 1?41 : oompiled by a., c. Treasher • • • • •••••• 0.50

17. �anganeee ln Oregon, 1?42 : by the atatt • • • • • • • • • •••• •••••••• o.45 18. First aid to fossils, or what to do before the Paloontologlat ooaee, 1?3': J.E.Allen 0.20

19. Dredging ot farmland in Oregon, 1939 : F.W.Libbey ••••••••••••• (out of print) 20. Analyeee and other prcpcrtl•• of Oregon coala, 1940 : H.F.Yanoey A W. R. Geer (out of print)

21. Second biennial report ot the Department, 1,3,·40 •••••••, •••••• Pree 23. Inveetlgation of Peported occurrence ot tin at Juniper RidJe, Ore,. ,•42 : Harriaon A Allen o.4o 24. Origin of the blaok eanda of the �oaat ot eouthweatern Oregon, 1?43:.W.H.TWenhotel 0.30

25. Third biennial report ot the Departaent, 1'41-42 : •••• • • • ••••••••••• Pree

26. Soil: It• origin, destruotlon, and preservation, 1?44: I.H.Twenhotel ••••••••. . o.45

27. Geo logy a ooal resouro•• ot Coo• Bay quad., 1'44 : John tllot Allen a Ewart u. Baldwin . . 1.00

28. Fourth biennial report ot the Depart�ent, 1'43-44: • • • • • • • • • • • ••• Pree 2,. Ferruginous bauxite deposita in N.l. Orog. ,l945: F.W. Libbey, I.D.Lowry, 4 R.S.Y&son . . . 1.00 30. �inoralogioal and physical composition of the sands of the Oregon coast from Coos Bay

to the mouth of the Columbia River, 1945: \f .H.TWenhotel ••••• 0.35 l.M.I. SHOR! PAlERS 1. Proliminary report upon Oregon saline lakes, 1?3?: O.F.StL 0.10 2. Industrial alu�inum - a brief survey, 1?40: Lellie L. �ot� 0.10 3· Adv. report on aome quiokailver pro1pects in Butte fall• quad ., Oreg. ,•4os I.D.Iilkinson (out ot print)

4. Flotation of Oregon li11e1tone1 1'40: J.B.Clemmer 4 B.II.Clemmone ••• • •••• 0.10

5• Survey of nonmetallic mineral produotion ot Oregon tor 1940-41 : C.P.Holdredge • 0.10

• 6. Pumloo and pup1iclte, 1'41: James A. Adame . • • • • • • • • • • • •• • • • • • 0.10 7. Ccologio hiatory of the Portland area, 1?42 : Ray C. Treather 0.15 8. Strategic 4 critioal minerals,& guide for Oregon proepeotora, 1942 : Lloyd 1. Staple• {out ot print} ?• Some manganese depoeits in the aouthorn Oregon coaatal region, 1'42:. Randall E. Brown 0.10

10. Investigation or Tyrrell aanganeu and other nearby deposits, 1'4J: I. D. Lowry • , 0.15

11. Mineral depoeita in region of Imnaha and Snake rivere, Oregon, 1?43: P.ft.Llbbey • 0.15 12. Preliminary report on high-alumina iron ores in �ashington County, Oregon,

1,44 : ll.':f.Libbey1 W.D.Lowry, A R.S.Wason ••••••••••• •••• o.15

13. Antimony in Oregon, 1944: Norman s. Wagner •••••••••••••••••• 0.15

14. Notea on building-block aaterialt ot eastern Oregon, 1'46: Horaan s. laaner • 0.10 PUBLICATIONS (Cont.)

P.rioo po stpaid G�CLOGIC �AP SERIES

1. Geologic map or the Wallowa Lake quad., 1938 : W, O, Smith a Others (also in Dull, 12) , * o.45 2, Geo logic map of the Medford quadrangle, 1939 : P.G.Wella a Others , • , , , , , , • , o.4o ), Geologio map and geology or the Round Mountain quad., 1940: W.D.Wilkinson & Others 0.25 4. Geologic map of the Butte Palla quad., 1941 : W,D.Wilkineon a Others , , • , • , • o .4s 5• Geologic �P and geology or the Grants Pass quadrangle, 1,40 : P,G,Wells a Othsrs , , , , 0.)0 6, Preliminary geologio map or the Sumpter quadrangle, 1941: J.T.Pardee a Others •• o.4o

• Geologie map ot the Pol'tland area, 1,42: Rq C. "rraasher , , , • , • • • 0.25 7• , , , , , , , 8, Geologic map ot the Coos Bay quadrangle, 1'44: Allan a Baldwin (sold with Bull. 27) •

'· Geol ogic 11ap of the St, Helene quad ,, 1,45: W. D,Wilkineon, W.D,Lowry, a E,U, Daldwin ••,

�ISCELLANEOUS PUBLICATIONS

The Ore.-Bin: issued monthly by the statt, as aediu• tor news it••• about the Depart•ent, mines, and •inerala, Subscription price per year , , , 0,25

Oregon mineral looalltlee 11ap • , , • , • • • •• , ...... 0.05 Landforms of Oregon: a phye1ograph1o sketch, (17 by 22 lnohee) 1941 o.lo

Index to topographic llapping in Oregon, 1'45 • • , , • • , • ...... Free

Index to geologlo mapping in Oregon, 1'44 , ••, , • , , , , , • , ...... Pree