Well name Drilling Record

Wells fm. (surface)

Manning Canyon fm. (11570')

Brazen fm (12161')

Formation Tops

1950-01

-17­

IDA.HO BURJYI.U OF l'lIlIJES & GiOLOGY • l,"1ell NC t Sec. T. R. _

DRILLING RECORD

;STA.TE NO. .-------------------------1

._------------------------:

Remarks Frcm To Description of Formaticn Core, recovery, oil, gas,

water. shaHs. etc. Core No. 46, 11798 to 11813 recovered 13 ft. 13 ft. shalE black fissile calcareous carbonaceous hard fractured with calcite vein1ets, some pyrite and slickensides. At 11945 trace of gray sandy si1ic limestone and chert. At 11990 trace of limestone as abo

12005 12060 Limestone-gray to dark gray fine Core No. 46, 12033 to 12048 to medium crystalline, sandy, recovered 13 ft. 13 ft. of medium hard. limestone, gray to dark gray

fine to medium crystalline sandy hard fractures with calcite vein1ets.

12060 12110 Shale-as abo 19110 12161 Limestone as abo 12161 12844 Dolomite-predominant. At 12161 Mississippian brazer

(?) Core No. 47, 19161 to 12181 recovered 20 ft. 20 ft. of dolomite, gray limy sandy in pt. dense to fine crystal­line with pyrite, fractured with white chert and dolomite shombs in fractures sl.1arge inclusion of black fiss1e carbonac~ous shale At 12190 black shale as abo At 12210 dolomite is dark gray, fine to medium crystal­line limy sandy medium hard with black silty shale lenses and inclusions. (samples show much cvgs.making it very hard to tell true lithology). At 12310 fd10mite is dark gray and limy with shale as abo At 12435 to 124~0 completely oil saturated; from 40 to 45 mainly in fractures, spotty; 45 to 65 mainly on outside of cuttings; 65 to 70 clean with no oil; 70 to 75 appearsstrongly saturated everything 75 to 80 spotty in limestone;

-16­

IDAHO BUR:iAU OF IvinmS & GiDLOGY ,

Hell Nc. Sec. T. R. _

DRILLING RECORD

-------------------------. :STATE NO., 1

Remarks Frcm I To I Description of Formaticn Core, recovery, oil, gas,

"fat er. shoHs. et c .

Core No. 43 cont. inclusions of dark gray sil­ty pyritic limestone and some calcite and black shale. At 11340 mostly calcite, chert inclusion and some sandy limestone. At 11410 limestone is light gray to gray, fine to medium crystal­line with very sandy with minor calcite, medkum hard to soft trace of white chert and pyrite. At 11425 trace of interbedded black silty shale At 11470 trace of interbedded black silty shale. At 11500 limestone is dark gray fine crystalline to dense si1ic hard with black fissile pyritic shale interbedded or as inclusions. (This inter­rpretation is based on gamma­ray log, normally it would be logged as shale) At 11570 Limestone is light gray fine to medium crystalline very sandy with m1 calcite, medium hard with trace of white chert. At 11570 basal Penn­sylvanian Manning Canyon(?)

11577 112005 I Shale. Core No. 44, 11577 to 11591 recovered 11 ft. 10 ft. shale black fissile silty, fractur­ed at top with calcite veins. 1 ft. of shale black very fiss1e carbonaceous very shattered. At 11610 trace of

11, limestone and calcite with trace white chert. At 11640 trace limestone, fine crystal line very si1ic very hard and white chert (correlation for log) At 11670 shale as abo At 11780 trace si1ic lime­stone and chert as abo (cor­relation for log)

1---­

../ -15­

IDhHO Blk.:..-\U Jr 1,;iii0.3 &. G.dJLOGY •

1\le11 I:C. Sec. T. R. _ ,-------------------------,,STAT...... NO.• 1

DiULLIi~G RbCORD

iteuarks Core) recovery, oil, gas)

vlater. ShOHS. etc. Description of Formaticr.ToFreID

Core No. 40 cont. of white calcite with black sha1y lenses. No dip. At 10750 limestone is gray medium coarse crystalline in pt. sandy medium hard to hard with abundant calcite. At 10870 pure calcite with coarsely crystalline lime­stone as abo Core 41, 10967 to 109i4 recovered 27 ft. 8 ft. lime­stone gray fine to medium crystalline in pt. ,sandy pyritic hard, fractures with coarse crystalline calcite. 6 ft. limestone gray medium crystalline, fossils, sandy hard, fractured as abo t ft. calcite white to gray coarse crystalline. 3 ft. fossilif ­erous limestone as abo 3 ft. calcite as abo 1t ft. lime­stone gray finely crystalline sandy hard, fractured as abo t ft. calcite as abo 4 ft. limestone gray fine crystal­line sandy to silty hard, fractured as abo No dip. At 11030 limestone is gray to dark gray finely crystal­line, st1ic pyritic, hard with black silty sha1y lam­inae. At 11050 silty to sandy At 11155 trace of interbedded black silty shale. At 11210 si1ic. Core No. 42, 11231 to 11233 recovered 0 ft. At 11290 calcite grades into white chalky limestone. Core No. 43, 11302 to 11316 recovered 14 ft. 3 ft. lime­stone dark gray to black dense sha1y silty slightlyfractured With m1nor ca1c1te veins. 11 ft. calcite, pink­ish to white with large

-

-14­

IDhi-lO Blkw.l-\U OF 1,.ilJ.cB &. GillLOGY •

Well Uc. ~ec. • Ft.--- ----DHILLli~G RECORD

,STI-\T~ NO. ,-------------------_­ -1

Remarks

Frcm To Description of Formaticr. Core, recovery> oil, gas, water, 5110\15. etc.

Core 38 cont, stringers and laminae throu­ghout, no bedding for dip. At 10,220 trace of sandstone gray fine to medium grain, limestone matrix, grains are rounded to subrounded, no porosity, abundant ca1ttte black silty shale as laminae in limestone gray to dark gray finely crystalline, silt y sandy, medium hard. At 10290 trace of sandstone gray medium grain with lime­stone ma'rix. At 10310 abundant calcite. At 10360 less calcite. At 10390 abun­dant calcite. At 10430 shale content increases, may be limestone in shale or shale in limestone.

10,450 10,6301 Shale. Core No. 39, (10466 to 10485) recovered 17 ft. 4 ft. shale black silty calcareous pyri­tic, fractures with calcite vein1ets. 2 ft. limestone gray dense to fine crystallin e, sha1y pyritic, fractures as abo 11 ft. shale as des­cribed above with gray limy ~i1~stone stringers, poor dip 20 . At 10540 trace of sand­stone gray fine to medium gRain, calcite matrix hard.

10,630 1ID,5771 Limestone predominant. At 10690 abundant calcite some white chert. Core No. 40, 10723 to 10737 recovered 13 ft. 6 ft. lime­stone gray finely crystalline to dense pyritic hard fractur. ed with white to dara coarse­ly crysta11in~ calcite; some black silty calcareous shale laminae. 7 ft. shale dark gray to black calcareous sil­ty pyritic hard fractures witl calcite as abo 2 ft. from bottom of core is 2 ft. 1ense

-13­

IDkHO BU1~.!:.J~U OF 1',li~.i:B &. GclJLOGY •

1,\Jell iJc. Sec. T. Ft. _

DRILLING RECORD

------------------------­;s'1'P.T.c; NO. ,------------------­ -1

Remarks

Frcm To Description of Formaticr. Core, recovery, oil, gas, vrat er. shoHs. et c .

9810 9890 Shale black and silty. 9890 10060 Limestone. Core No. 36, (9896 to 9921)

recovered 25 ft. 10 ft. limestone gray medium coarse crinoida1 fossils, slightly to very silty styo1itic slightly pyritic, medium hard to hard, fractures with cal­cite vein1ets and intersper­sed with black silty calcar­eous pyritic medium hard shale stringers. 15 ft. lime­stone gray fine to medium crystalline slightly fossi1­~ferous, silty to sandy few styo1ites slightly pyritic hard, fractured and inter­spersed with saa1e as abo Lower part of core more sha­1y than upper, no dip. At 10,900 trace of white chert. Core No. 37, (9880 to 10,000) recovered 17 ft. 17 ft. inter bedded with highly fractured limestone and shale. Lime­stone, gray to dark gray dense to coarsely crystalline in pt. fossils, pyritic sha1y Shale-black slightly calcar­eous soft to medium hard as calcite vein1ets, no dip. From 10,000 increasing amount of white chert to 10,050. Pennsylvanian Missouri at 10,7

10,060 10,13C Sandstone-gray, fine grained aa1­ At 10,110 sandstone grades cite matrix, quartzitic appear­ into sha1y silty limestone ance, hard, slightly pyritic and with much calcite. no porosity.

10,130 10,45C Limestone-gray, finely Crysta11iniAt 10,160 white chert. ~tj~ very si1ic, glassy texture Core 38, (10,172 to 10,185) hard. recovered 9 ft. 9 ft. lime­

stone gray dense to medium crystalline in pt. very Qi1­ic slightly P¥ritic~ fractu­res with ca1clte velns, very hard very black, silty sha1y

1--­

-12­

IDJ1.HO BUi~:cJ\U OF 1',m.E.S &. GiULOGY •

hJell Ue. Sec. T. R, _

DRILLING RECORD

,-------------------------,;STAT.c.; NO, ,-------------------_­ -1

Eemarks Core, recovery, oil, gas,To I Description of FormaticnFrem

water, sho'Hs. et c • Core No. 32 cont. Shale black and silty occurs as stringers and laminae in quartzite, pyritis. No bed­ding for dip. Appears + or ­50? Core No. 33, (9568 to 9587) recovered 14 ft. 14 ft. quar­tzite gray limy fractures with calcite veins, very hard no bedding for dip.

9615 9810 I Limestone, gray dense to finely Core No. 34, (9645 to 9670) crystalline silty with black recovered 25 ft. 5 ft. lime­silty shaly laminae. stone gray dense to finely

crystalline silty; shale black silty calcareous pyri­tic. It ft. conglomerate shale and limestone pelletst in. to 2 inches in diameter in limestone matrix, fossils. 17 ft. limestone gray dense to fine crystalline silic hard; shale black silty cal­careous pyritic. It ft. qu­artzite gray limy fractures with vein quartz add some calcite in fractures, no bedding for dip, bedding in­dicates submarine slumping. Core No. 35, (9685 to 9710) recovered 25 ft. 4 ft. lime­stone gray dense silty hard interbedded with black silty pyritic shale. t ft. very highly distorted and fractur­ed limestone and shale; shale shows irregular striations and quartz inclusions in cal­cite fractures, very pyritic in (7). 20t ft. shale black silty interbedded with gray limestone; shale contains limestone pellets, is thin bedded, no Dips. At 9730 limestone is silty and inter­bedded with black silty shale Section from 9770 to 9825 adjusted to gamma-ray log.

-11­

IDhHO BUj~r:.J~U OF p;lli1:B &. GillLOGY •

11]ell iJc. Sec. T. K. _

DRILLING RECORD

------------------------­;STil.T.c; NO. ,------------------------­

Remarks

Frem To Description of Formaticn Core, recovery, oil, ~as)

water. shoVJs. etc.

gray silty styo1itic, frac­tures with calcite veins, black shale 1ense. 15 ft. limestone gray, dense to me­dium crystalline, silty with black shale lenses and frac­tures. 3 ft. gray limestone as at top of core, fossils, dip 5°.

9210 I 9225 ~Sha1e, black silty (Core 5 ft. fo~ - log)

9225 I 9430 Limestone, gray to black, dense ttAt 9320 black shale inter­finely crystalline, silty, hard, bedded with limestone as abo black shale laminae throughout. At 9410 trace of $andstone

gray fine to medium grain, calcite matrix no porosity.

9430 I 9615 I Sandstone, light to dark gray Core No. 30, (9435 to 9459) speckled quartzitic very hard recovered 24 ft. 24 ft. calcite matrix. quartzite gray limy fractured

with calcite vein1ets fossils in pt. top foot shows evi­dence of crushing, thin black shale laminae throughout, no dip. Core No. 31, (9492 to 9517) recovered 25 ft. 17 ft. quar­tzite gray limy pyritic fra­ctures calcite vein1ets very hard, the bottom 5 ft. of the 17 ft. contains a few string­ers of limestone which is gray medium to coarse crysta­lline fossils pyritic frac­tures hard with some black shale streaks and laminae. 4 ft. limestone as ab styo1i­tic. 4 ft. quartzite as in top of core. Calcite shows crushing. No bedding for dip + or _ 50? Core No. 32, (9530 to 9555) recovered 25 ft. 1 ft. lime­stone medium coarse crystal­line silty fossils pyritic fractures with calcite vein­lets hard. 24 ft. quartzite gray limy fractures with calcite vein1ets, very hard.

-10­

IDAHO B(Ji:,ej~U OF !,.llihS &. GillLOGY t

1.1ell iJc. Sec, T. R.

DRILLII~G

_

RECORD

-------------------------,;STAT.c; NO. ,-------------------_­__--1

Remarks Frcm To Description of Formaticn Core, recovery, oil, gas,

water. 51101;'8. etc.

Core No. 27, (8521 to 8546) revovered 25 ft. 25 ft. lime­stone gray to black very fine crystalline to dense, very sha1y silty hard. Limestone gray finely crystalline silty occurs as streaks in body of the core with black shale lenses, fractured pyriticand no dip. At 8570 trace of interbedded shale as abo At 8630 much calcite in limestone.

8660 I 8675 I Sandstone gray fine to medium grain, very limy and hard.

8675 I 9210 I Limestone, gray finely crysta11in~At 8715 Pennsylvanian virgil silty sha1y and medium hard. I Core 28, 8720 to 8744

recovered 24 ft. 5 ft. lime­stone, gray finely crystallin d~nse, shalysilty pyritic, fractures with calcite vein­lets black shale lenses. 15 ft. limestone, gray medium crystalline, fossils shaly pyritic styo1itic, fractures as abo 4 ft. lime­stone same as top 5 ft of core, do dip, calcite shows crushing. At 8770 much cal­cite, At 8810 trace black silty shale. At 8930 trace gray black calcareous sligh­tly shaly siltstone (much black silty shale present in samples 25 to 90 ergs?) At 9015 trace of sandstone buff fine to medium grain medium hard no porosity. At 9070 limestone is dark gray to black finely crystalline to dense silty hard and with much calcite. At 9100 fossils ~t 9120 trace of brown med­ium crystalline limestone. At 9160 becoming sha1y.Core No. 29, (9203 to 9228) Recovered 25 ft. 7 ft. lime­stone, medium crystalline

,----------­

-9­

IDAHO BUi~.cJ-\U OF r,;li~~S &. GclJLOOY •

1'1e11 iJc. Sec. I. FL _

DHILLING RECORD

:STATi NO.,-------------------------,

, ._------------------_­ -1

Remarks Frcm To Description of Formaticn Core) recovery, oil) gas,

water, sho"l;Ts. etc.

7780 7800 Shale, black fissile. 7800 7835 Siltstone, black calcitic sha1y. 7835 7860 Limestone, sandy silty as abe 7860 7950 Shale, black silty calcitic. At 7946 very silty and shaly. 7950 81rO Limestone, dark. Core No. 26, (7950 to 7975)

recovered 25 ft. 7 ft. lime­stone gray to black finely crystalline very shaly hard silty streaks and black hard ba1citic silty shaly lenses fractured pyritic. 2 ft. lime stone gray medium to coarse crystalline, fossils win silty streaks. 14 ft. gray to black shaly limestone as abe 1~ ft. gray fossiliferous limestone as abe ~ ft. gray sha1y limestone as ab no bedding appears flat + or ­50. At 8010 becomes very sandy. At 8040 interbedded black ca1careous.si1tstone. At 8080 trace of sandstone gray medium grain limy fair porosity. At 8110 trace sand­stone brown fine grained limy medium hard.

8110 8220 Sandstone, gray fine to medium At 8130 sandstone white to grain, very limy. gray. Quartz grains are roun­

ded and frosted cementing materials calcite and fine grain silt, no porosity. At 8160 trace black shale. At 8190 interbedded limestone silty finely crystalline and sha1y."

8220 8385 Limestone, gray to dark gray At 8310 trace siltstone, fine dense silty sandy hard. black sha1y calcareous. At

8370 trace 6f sandstone brown medium grain limy medium hard.

8385 8400 Limestone, gray fine to medium crystalline sandy.

8400 8420 Shale, black calcareous silty. 8420 86'0 Limestone, gray to black finely At 8440 interbedded black

crystalline to dense silty sandy shale as abe hard.

t.

~--~ - - ----------------------­

-8­

IDAHO BUi~J::j\U OF t'iliJ.i:..S &. G.c.DLOGY •

liell fJe. Sec. T. h. _

DRILLIl~G RECORD

,-------------------------, ISTAT~ NO. ,-------------------_-­__ -1

Remarks FreID To Description of Formaticn Core, recovery, oil, gas,

water, shaHs 1 etc.

Digs 30 to 38 0 . One(?) of 52 .

6790 6925 I Limestone, gray finely crystallin~Core No. 23, (6885 to 6900) silty shaly medium hard. I recovered 11 ft. 11 ft. lime­

stone light to dark gray sandy finely crystalline, fossils, fractured slicken­sides calcite veinlets, no dips.

6925 697 5 lSi1t s tone . I Cor e 24, (6925 to 6947)recovered 22 ft. 22 ft. silt­stone gray to black calcitic shaly fossils pyritic fract­ured, slickensides calcite veinlets hard, dip 22 to 33 0

.

6975 7030 Limestone, gray fine to medium At 7010 becomes very silty crystalline sandy, medium hard. and sandy.

7030 7050 Sandstone tan fine to medium grain, very limy very silty.

7050 7310 Limestone, gray silty sandy as ab 7075 much calcite, at 7100 shaly, at 7140 fossils, at 7275 becoming silty.

7310 7480 Siltstone, gray to black calcitic Core No. 25, (7367 to 7392) pyritic hard. recovered 25 ft. 25 ft. silt­

stone gray to black very calcitic fractures calcite veinlets , gray limy siltstor stringers throughout the core 6 ft. from the bottom of the core is 1~ ft. limestone, gray, medium to coarse cryst­alline, sandy, fossils, digs are poor, approx. 10 to 15 . At 7430 becomes pyritic, at 7450 interbedded gray sandy limestone, fossils.

7480 7660 Limestone, light gray to gray fine to medium crystalline,fossils, silty in pt. . . At 7520 becomes silty, at

7600 interbedded black sha1y calcitic siltstone.

7660 7670 Sandstone, buff medium grain slightly limy, medium hard.

7670 7780 Limestone, gray! medium crystall very sandy, med1um hard to hard. ne At 7710 interbedded black

calcitic shale. At 7660 trace brown limy sandstone.

6682

-7­

•IDAHO BUe..Di\U OF t',liJ.E.S & G.illLOGY

,-------------------------,1'Jell iJc • Sec. T. Fi. _ ;STAT~ NO.

,-------------------_- -1

DRILLli~G RECORD

Remarks Frcm Core, recovery, oil, gas,

"later. sho\.,s. etc. Description of FormatienTo

and gray sha1y limestone, fossils, pyrite calcitic hard and fractured. Core No. 16, (6508 to 6511) recovered 22 ft. 2t ft silt ­stone, black calcitic silty pyritic fractured calcite vein1ets, no dip.

6550 6625 Limestone, gray dense to fine crystalline, silty fractured hard

6625 6635 Core No. 17, (6625 to 6637) recovered 8 ft. 8 ft. silt ­stone, kray to black calcitic sha1y pyritic, fractured calcite veins, no dip.

6635

Siltstone.

6682 Shale, dark. Core No. 18, (6637 to 6644) recovered 3 ft. 3 ft. shale gray to black calcitic silty fractured, calcite veins, pyritic, no bedding, appears flat dip. Core No. 19, (6659 to 6682) recovered 23 ft. shale gray to black, calcitic, many silt y streaks, fossils, pyritic fractured, calcite ~ein1ets, hard, dips 15 to 28 .

6747 Core No. 20, (6682 to 6686) recovered 4 ft. 4 ft. silt ­stone, gray to black calcitic sha1y pyritic, fractured, calcite vein1ets, hard, Uips 39 to 48 0 . Core N. 21, (6693 to 6702) recovered 7 ft. 7 ft. silt ­stone, gray to black calcitic sha1y pyritic calcite vebn­lets hard, dips 11 to 16

(fair) at bottom of core. Dips ~ri 23 to 26 0 (poor) at top of core. At 6710 highly fractured with white chert in fractures.

6747

Siltstone

Core No. 22, (6747 to 6763) recovered 10 ft. 10 ft. shale gray to black calcitic silty pyritic, slightly fossi1ifer OUB, fractures, calcite vein~

6790 Shale.

__ 1­

-6­

•IDAHO BUe.e:t~U OF l"di~bS & GillLOGY

11[e11 [Jc. Sec. T. R. _ ;STAT.c; NO. , 1

DHILLli~G RECORD

Remarks Frem To Description of Formaticn Core, recovery, oil, gas,

"later, sl1o'\:,s, etc. Core No. 10 (5706 to 5712) recovered 6 ft. 6 feet of shale, gray to black, ca1citi c silty fractures, slicken­Sides, dip 42°.

5760 I 5920 I Limestone, gray to black dense to finely crystalline, silty hard

5920 I 6160 interbedded with siltstone

I Shale, gray to black. as abo

I Core No. 11 (5921 to 5949)recovered 28 ft. 28 feet of shale, gray to black, very calcitic, thin silt laminae 1/16 to 1/2 inch thick, fossils, fractures, slicken­sides, dip varies from 370

in the upper half to 19 0 in the lower half. Core No. 12 (5949 to 5985) recovered 13 fete 13 feet of shale, black very calcitic a number of silty calcitic pyritic masses elongated to (?) shape throughout the core, fossils, fractures and slickensides, no dip. Core No. 13, (5985 to 5996) no recovery. At 6000, shale gray to black very silty calcitic with calcite vein­lets, hard. At 6020 trace

6160

6180

I

I

61801

65501

limestone, gray finely cryst­alline silty to si1ic.

Limestone, gray medium crystalline medium hard silty. Siltstone, dark gray calcitic ICore No. 14, (6347 to 6375)sha1y hard interbedded with lime recovered 27 ft. 27 feet of stone, gray finely crystalline siltstone, black calcitic silty, this siltstone might be sha1y with calcite vein called as shale. pyrite streaks throughout

some vug filling by pyrite and calcite, fractures with some slickensides, fossils in lower 7 ft. very hard locally silty shale, apparent dip 23 to 26°. Core No. 15, (6375 to 6394)recovered 3 ft. 3 ft. con­glomerate, black siltstone

-5­

IDAHO BUR&\U OF i'inmS & GEOLOGY •

\·'1el1 Nc. Sec. T. R. _

DRILLING RECORD

------------------------­:STATE NO. ' ,-------------------_-__--1

Remarks

Frem To I Description of Formaticn Core) recovery) oil) ~as)

water. shovrs. etc.

5280 5520 I Shale, black silty slightly At 5475 trace of black chert. calcareous.

5520 5760 I Siltstone. Core No. 5 (5520 to 5548) recovered 28 ft. 28 ft. silt­stone, very calcareous, sha1y pyritic conglomerate from 5530 to 5548 composed of lime stone pellets in siltstone matrix fossils, fractures which are slightly vertical light gray silver streaks in lower 3 ft. slickensides dips 42 0 to 47 0 in the upper part of the core. Core No. 6 (5548 to 5575) recovered 28 ft. 28 ft. silt­stone, black very calcareous pyritic, fossils, fractures, slickensides, average dip 450

Core No.7 (5576 to 5597) recovered 21 ft. 21 ft. silt­stone, black very calcareous very sha1y, pyritic, fracture s, slickensides, average dip 47 0 • Core No.8 (5597 to 5620) recovered 23 ft. 23 ft. of siltstone, gray to black, very calcareous, sha1y pyrit­ic, fossils, fractures, slick ensides, average dip (?) At 5535 trace of white chert. At 5645 trace of limestone, gray finely crystalline and sandy. At 5660, cherty. Core No. 9 (5699 to 5706) recovered 3 ft. 3 ft. of siltstone, gray to black calcareous sha1y pyritic, fractures, slickensides, fossils, top foot contains thin calcic fine-grained sandstone laminae, average dip 40 to 45 0 •

-4­

• IDAHO BURJiJl.U OF i,m~ES & GEOLOGY

,-------------------------1 ~rVell Nc. Sec. T.__._R. _ :STATE NO. ,

'_-----------------------­1

DRILLING RECORD

Remarks Core) recovery) oil) gas)Description of FormationToFrem

"later. 6hO';[6. etc.

3890 3980 Limestone-gray to dark gray, fine to medium crystalline, sandy sil tiT hard fossils.

3980 4030 Shale, black silty calcareous. 4030

4250 4430

4460

4540

4250 Limestone, gray to dark gray, jAt 4080, slightly black silty sandy hard. as abe

4430 Shale, black silty calcareous. At 4215, 4460 Siltstone, black calcareous, shalT

silic and hard. 4540 Limestone, gray to dark gray,

silty, sandy, hard.4540 4720 Siltstone, dark gray to black tAt 4570,

shaly limestone

fossiliferous.

trace of interbedded calcareous shaly hard. limy sandstone. At 4640

4720 4910 Limestone, gray finely crystallin interbedded limestone as abo sandy very hard.

49lID 4990 Shale, black silty calcareous. 4990 5070 Siltstone, black calcic, very IStaining is contamination.

shaly, hard. 5070 5110 Shale, as abe

52005110 Limestone, finely crystalline, ICore No.3 (5117 to 5135) sandy, fossils, medium hard. recovered 6 ft. 6 ft. silt­

stone, gray to black very calcareous, pyritic with wilty stk. and calcite veins fractures, some slickensides, fossils(7) hard, dip 50 to 550 (?) Core No.4 (5178 to 5186) recovered 8 ft. 8 ft. shale, gray to black, very calcare­ous, pyritic silty with many silty stks. and calcite veins fractures, some slickensides fossils (7) hard, good dips

5200 I 5280 I Siltstone, gray to black, shaly 40 to 450 •IThis is probably an inter­

salcareous. bedded series of shale and siltstone in cores it looks like siltstone with gray limy silt stringers and occasional limestone string­ers. At 5260 trace of chert" white.

-3­

IDA.HO BURi.AU OF i'in~ES & G:illLOGY •

Nell Ne. Sec. T. R. _

DRILLING RECORD

,------------------------ ­:STATE NO.1

1

Frem

2610 2625

2870 I

To

2625 2870

3280

Description of Formaticn

Shale as abo Limestone, dark gray to black, dense

i finely crystalline, silty,

fossi s in pt. hard.

Shale as abo

3280 3290

3460

3630

3290 3460

3630

3880

Limestone as ab, cherty_ Siltstone, black calcareous sha1y si1ic hard (this is a very poor break and must be logged as shale by some). Shale black calcareous shows fissi1ty, silty. Limestone-dark gray to black, dense, fine crystalline, silty sha1y, very pyritic and hard.

3880 I 3890 I Shale, black silty calcareous .

Remarks Core, recovery, oil, gas,

water. 811ovT8. etc.

At 2665 slightly coarse crystalline limestone shaly, at 2770 interbedded gray silty limestone. At 2820 sha1y limestone. At 2960 trace of bDown, fine grained, slightly limy sand­stone, At 3000 probably into a series of gray silty sha1y limestone and black calcare­ous silty shales. At 3060 cherty. At 3075 trace of ligh t gray silty limestone. At 3110 trace 6f light gray silty limestone. At 3120 che­rty. At 3135 trace os light gray silty limestone. At ~160

cherty. At 3410 interbedded gray silty sandy limestone.

At 3585 cherty. At 3675 cherty. At 3700 very highly fractured zone, conglomerate of siltstone pebbles in limestone matrix, fractures with calcite, At 3745 Permium Wo~fcamp, At 3780 limestone, gray to dark gray, fine to medium crystal­line silty with fossils. Core No.2 (3810 to 3823) recovered 13 ft. 7 ft. of siltstone, very calcic, dark gray to black pyritic fossils in top 4 ft. contains white to tiuff limy fine grain porous sandstone stringers 1/8 to 1 inch thick question­able dip 22°.

• I t -"------- ­

-2­ ..

IDAHO BURiAU OF IvtllJES & GiOLOGY

Hell Nc, Sec. T, R. _

DRILLING RECORD

------------------------­:STATE NO.• - 1

Remarks Core, recovery, oil, gas,Description of Formaticn

water, shows 1 etc. ToFrcm

910 1510 I Siltstone, gray to black, ca1car- No samples taken from 945 to eous sha1y si1ic hard, calcite 955. At 1075 trace of brown vein1ets. chert, at 1140 trace of lime­

stone, white to gray, medium crystalline, fair porosity, no samples taken from 1225 to 1235. At 1250 trace of limestone, brown finely cry­stalline sandy with very hard white chert. At 1305, white chert in calcite. At 1325 cherty. At 1470, interbedded limestone, gray fine to me­dium crystalline, hard, sandy

1510 1555 I Limestone, gray medium crysta11in~ very sandy and hard, fossi1s(?)

1555 1995 I Limestone, black, dense to fine At 1590 grades into black crystalline, silty sha1y, calcite calcareous sha1y pyritic veins. siltstone. At 1640 trace of

brown sandy limestone. At 1655 si1ic cherty. At 1735 trace of interbedded gray, fine to medium crystalline sandy hard limestone. At 1950 grades into siltstone as ab, cherty and silic inter bedded series of limestone and siltstone.

1995 2010 Sandstone-brown, fine grained, v very hard.

2010 2110 Siltstone as abo 2110 2350 Limestone-gray finely crystalline At 2145 interbedded gray

silty sha1y, fossi1s(?) imestone, At 2180 interbedded gray limestone. At 2260 cher­ty. At 2315 cherty. At 2390 shale as abo At 2455 trace of sandstone, brown fine grained limy and hard. Core No. 1 (2494 to 2504) recovered 3 ft. which was 3 ft. siltstone, black gray calcareous, shaly pyritic fractures with oxide veins, hard, At 2510 trace of lime­stone as abo

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420

-1­

•

IDA.HO BURBAU OF i.;mmS & G:illLOGY

Well Ne. Sec. T. R. ___

DRILLING RECORD

-------------------------. :STATB NO. I1_-----------------------­ 1

Frcm To Description of Formaticn Remarks

Core, recovery, oil, gas, water. Sh01·rs. et c .

o 60

60 80

No samples taken. Shale, black, very silty, ca1citi~ calcite vein1ets, hard, pyritic.

80 230 Limestone, gray to tan-brown, fin to medium crystalline with sandy silty calcite veinlets, hard, fai to good porosity.

230 260 I Limestone, brown, finely crysta1­ized, silic, hard with calcite grain1ets.

260 310 I Limestone, gray, as abo

310 390 I Limestone, light to dark gray finely crystalline, silty, si1ic pyritic, calcite vein1ets, hard sha1y.

Trace of oil in samples 90 to 140, occurs in limestone and siltstone, contamination from surface. At 130 ft. crinoid stems, at 170 very silicic, very hard, at 180 trace of black chert, at 210 interbedded tan fine-grained soft sandstone, at 220 trace of black fissile shale.

IAt 290 interbedded sandstone yellow, fine-grain, slightly limy, soft, fair porosity.

IAt 370 trace of black chert.

390 420 ILimestone, brown, finely crysta1-IAt 395 trace of black chert. line, very si1ic, very hard.

475 I Limestone, gray to black, Slight11At 460 ft, have white quartzbrown, finely crystalline, silty in association with calcite si1ic, cherty, hard brown chert.

475 580 I Sandstone, yellow, limy, as abo Fair to good porosity.

580 910 ILimestone , gray to black as abo

veins. Slight1y/mt, white gray sandstone at 530 ft, at 560 trace of interbedded black silty shale, at 565 pyrite.

IAt 625 interbedded siltstone, buff, limy, hard, occurs as stringers. At 705 ft. inter­bedded, yellow limy sand­stone. At 750 interbedded yellow limy sandstone. At 790, sandy. At 840 inter-bedded siltstone as ab, occur as thin stringers. At 880 cherty.

J I ~ ­