5200 4800 5000 4400 4600 5000 4600 5000 4200 4800 4400 4600 4400 5000 4800 4800 4800 4600 4600 4800 4400 5000 4600 4400 4800 5000 5000 4200 4200 4600 4200 4400 4600 4400 4600 4400 4800 4600 4800 4400 4800 4200 4200 4400 4600 4400 4200 5000 4400 4400 4200 4400 4200 4200 4600 4400 5000 4600 5000 4400 4400 4200 4800 4200 4400 4600 4800 4200 4400 4600 4400 4200 4400 4400 4400 4600 4600 4800 4200 4200 4800 4600 4200 4400 4200 4400 4200 4800 4400 5000 5000 4400 4600 4400 4600 4400 4200 4400 4800 4200 4400 4400 4600 4800 4400 4400 4800 4600 4800 4400 4200 4800 4400 4600 4600 4200 4400 4200 4800 4800 4200 4800 4200 5000 4800 5000 4400 4800 4800 4600 4400 4400 4800 4400 4800 4400 4600 4400 4400 4600 4200 4600 4600 4800 4600 4400 4400 4600 4800 5000 4600 4600 5000 4600 4400 4800 4200 4400 4800 4400 4200 4400 4400 5000 4600 4800 5000 5000 4800 4600 4600 4600 5000 5000 4600 4600 4400 4400 4400 4400 4400 4400 4400 4200 4400 4400 4400 4400 4600 4600 4600 4600 4600 4600 4600 4400 4400 Qa Qa Qaf QTst Qf Tmtr Tmtr Tmtr Tmst Qa Tmst Qa Qf Qf QTst Tmtr Qaf Qf Tmst Qf Tmtr Qa Qls Tmtr Qaf QTst Tmst Qf Tmtr Tmst Qaf Qf Qaf Qf Qoaf Tmst Tmtr Tmtr Qa Qls Qa Qf Tmst Qc Qls Tmtr Qf QTst Tmst Tmtr Tmtr Tmtr Qf Qc Qc Tmst Qf Qa Qa Qaf Qf Qf Qls Qf Qaf Qls Tmtr Qaf Qa Tmst Qoaf Qf Tmtr Tmst Qa Tmtr Tmst Qf Qaf Qf Qa Qf Qaf Qf Qa Qaf Tmst Qf Qf Qa Tmst Tmtr Qaf Qaf Qoaf Tmst Qaf Tmtr Qaf Tmtr Qf Qaf Qa Tmst Qf Qa Tmst Qls Tmst Qf Qc Qc Qaf Tmtr Tmst Qf Qf Tmst Qf Qf Qaf Qaf Qa Qf Qa Qa Qaf Qf Qaf Tmst Tmtr Qf Tmtr Qf Qf Qa Tmst Qaf Qls Qaf Qa Qa Tmst Tmst Qaf Qaf Qls Qa Qf Qf Qa Tmtr Qaf Qa Tmst Qf Tmst Qa Qa Qaf Qls Qls Qaf Tmtr Qa Qf Qf Qf Qf Qa Qa Qf Qa Qaf Qaf Qa Qf Qaf Qf Qa Qa Qa Qf Qaf Qf Tmat Tmst Qaf Qls Qc Qc Qc Tmst Qc Tmst Qf Qaf Qa Qaf Qaf Tmtp Qaf Qaf Qc Tmtp Tmtr Qf Qa Qaf Qa Qa Qaf Tmst Tmst Qa Tmst Qf Qa Tmst Qc Qa Qf Tmtp Qa Tmst Qaf Qa Tmst Qa Qaf Tmst Tmat Qaf Qa Tmst Qf Qa Qa Qa Qaf Qaf Qa QTst Qa Tmst Tmat Qaf Qa Qa Qa Qa Qaf Tmvt Qa Tmtr Qa Qf Qaf Qa Qa Qaf Qa Qa Qaf Qa Qaf Qa Qf Qaf Tmtr Tmtr Qc Tmst Qa Qaf Tmtp Qa Tmtp Tmst Qaf Qaf Qaf Qa Qa Qc Tmat Tmtp Qaf Qaf Qaf Qaf Qaf Tmtp Tmtp Qf Qc Qa Qaf Qls Qaf Tmtr Qa Tmat Qaf Tmtp Qaf Tmst Qc Qf Qf QTst Qf Qa Qf Qf Qaf Qa Qls Qf Tmtd Qaf Tmst Qa Tmtp Tmtp Qa Qc QTst Tmst Qa Qf Qaf Qa Qa Qa Tmst Qc Qc Qaf Qa Tmtr Qa Qa Qa Tmtp Qaf Tmtd Qa Qaf Qaf Qc Tmst Qa Qa Qc Tmtp Tmst Qc Qaf Tmst Tmtd Qa Tmtp Qaf Qaf Tmtd Qaf Qc Qf Tmst Qa Qaf Qc Tmtp Tmtr Tmtp Tmtr Qa Qa Tmtp Qaf Tmst Tmtd Qc Qa Qf Qaf Qls Qc Qa Qa Qc Qc Qaf Qa Qc Qf Qa Qa Tmst Qc Qc Qf Qc Tmtp Qa Qa Tmtr Tmtp Qc Qa Qaf Qls Qa Qaf Qa Qaf Tmst Tmtp Qf Tmtd Tmtp Tmst Qaf Qc Tmtp Tmst Qaf Qaf Tmst Qa Tmtd Tmtp Tmtr Tmtd Qls Tmtp Qls Qa Tmst Qf Qa Qc Qf Qa Qa Qls Qc Tmtp Qf Tmst Tmtd Tmtp Tmtd Tmst Qls Qc Qa Qls Qls Qaf Qf Tmtr Qaf Qa Qc Tmtr Tmtd Qc Tmtp Tmtr Qaf Qa Qaf Qc Qc Tmst Tmst Qaf Qa Tmtr Tmtp Qa Tmtp Tmst Qc Qa Qa Qaf Tmst Qf Tmtd Qc Qaf Tmtr Qls Tmtd Qf Tmtr Qc Qa Tmtr Tmst Tmtd Qc Tmst Qa Qa Qc Qa Qc Qls Qc Qa Qls Qaf Qls Qc Tmtp Qls Qaf Qa Tmtr Tmtr Qls Tmtd Tmtr Qls Qf Qc Tmst Qls Tmtr Qa Qc Qls Qaf Qa Tmtr Tmtr Qa Qf Qf Qa Qa Qaf Qaf Qaf Qc Qa Qc Qf Tmst Qls Tmtd Qls Qc Qls Qaf Tmtr Qa Qaf Qaf Tmtd Qa Qa Qls Tmtr Qf Qaf Qa Qaf Tmtd Tmst Qa Qc Qa Tmtd Qf Qc Tmtd Qa Qls Qaf Qa Qls Qa Qa Qc Qa Tmst Qa Tmst Qls Qa Tmst Qls Qa Tmtd Qa Qa Qaf Tmtr Qls Qa Qaf Tmtp Qa Tmtd Qa Qa Qa Qf Qls Tmtd Qoaf Tmtd Qc Qf Qf Qf Qaf Qls Qa Qa Qa Qf Qaf Tmtd Qa Qa Tmtd Tmst Tmst Qaf Qa Qf Qa Tmtr Qaf Qa Qc Qls Qc Qaf Tmtd Qf Qaf Qa Tmst Qls Tmtd Qa Tmtd Tmst Tmtr Tmtp Tmtr Tmtp Tmst Qc Tmtd Tmtd Qa Tmtd Tmst Tmtr Tmtp Qls Qa Tmtp Qc Tmtp Tmtd Tmst Tmtr Tmtp Tmst Qls Tmtp Tmtp Tmtp Tmtp Tmst Tmst Tmst Tmst Tmtr Tmtr Tmtr Qa Qa Qa QTst Tmtr Qa Tmtr Tmtr Tmtr Tmtr Tmtr Tmtr QTst QTst Tmtr Tmtr Tmtr Tmtr Tmtr Tmtr Tmtd Tmtd Tmtd Qa Qa Qa Qa Qaf Qls Tmtp Tmtp Tmtp Tmtp Tmtp Qc Tmat Tmtr Qa Qa Tmtp Tmtp Tmtp Tmtp 395 395 395 4974 4915 5057 4616 4686 4602 4442 4223 4813 4945 5166 4993 P o i s o n C r e e k R d Poi s o n C r e ek R d Mu d S p r i n g - S u n f l o w e r F l a t R d M u d S p r i n g - S unfl o we r F l at R d M u d S p r i ng-S u n fl o we r F l at R d C oa l P i t S p u r- G o v e G ul c h R d S i l v i es R i v e r Rd F e n w i c k C a n y o n Rd D e v i l s G ar den R d West Loop Rd Fo le y Dr Foley Dr Turnout Rd M a r s h all Ln Joh n Da y - Burn s H wy L o ne P i n e R d Lo n e P i n e R d Lone Pine Rd L o n e P i n e R d S i l v i es R iv e r S i l v i e s R iv e r P o i so n Cr e ek Poison Creek Curry Gordon Creek C u r r y G o r d o n C r e e k Foley Creek Fo l ey Cr e ek Foley Creek W il s o n C r e e k W i l s o n C r e ek T h o u s a n d S p r i n g s Cr e ek Fen w ick Ca n y o n C r e e k D ev i l ' s Ga r d en M a ho g an y R i d g e He i fe r C a n y o n Bla c k C a n y o n D e vi n e C a n y o n F e n w i c k Ca n y o n Arniz Reservoir Fol e y S l o u g h Harney Valley Fivemile Dam Thousand Springs SILVIES RIVER CALDERA PG9 PG8 PG7 PG6 PG5 PG4 PG3 PG2 PG1 PG45 PG44 PG43 PG42 PG41 PG40 PG39 PG38 PG37 PG36 PG35 PG34 PG33 PG32 PG31 PG30 PG29 PG26 PG25 PG24 PG23 PG22 PG21 PG20 PG19 PG18 PG17 PG16 PG14 PG13 PG12 PG11 PG10 PG28 PG27 PG15 8.41 ± 0.16 Ma 6.82 ± 0.33 Ma 4 2 1 1 2 3 2 1 1 1 2 4 5 4 3 2 2 1 4 2 1 1 2 2 2 5 2 4 2 2 3 4 1 1 3 8 4 1 2 1 8 1 3 1 2 2 1 2 2 2 1 2 2 3 2 3 2 2 3 3 3 1 1 4 2 2 2 6 3 2 2 1 5 1 1 1 2 1 1 1 3 2 3 1 2 1 3 2 1 1 2 3 2 4 1 2 5 2 3 2 3 2 4 4 2 3 3 2 2 11 3 1 2 2 3 2 5 3 6 5 2 2 2 3 4 6 3 4 4 1 3 2 3 2 4 2 2 4 3 2 3 3 1 3 5 2 3 2 3 2 3 5 1 2 2 1 3 3 2 1 1 1 2 5 3 5 2 3 3 3 3 1 2 2 2 2 1 4 2 2 1 3 4 1 3 2 3 3 1 6 1 3 3 2 2 1 4 2 1 1 4 1 4 1 1 4 6 1 2 4 1 1 2 UPPER CENOZOIC SURFICIAL DEPOSITS UPPER CENOZOIC VOLCANIC AND SEDIMENTARY ROCKS Angular unconformity to disconformity UPPER MIOCENE VOLCANIC AND SEDIMENTARY ROCKS LOWER PLEISTOCENE TO UPPER MIOCENE SEDIMENTARY ROCKS EXPLANATION OF MAP UNITS See Explanation of Map Units in the accompanying pamphlet for complete unit descriptions. ϐ ȋ Ȍ ȋ ȏǫȐȌ ȋ ȏǫȐȌ ȋ Ȍ ǤͲͻ͵ ά ͲǤͲͳͷ ȋ ͶͲ Ar/ ͵ͻ Ȍ Ǧϐ ȋ Ȍ ͺǤͶͳ ά ͲǤͳ ȋ ͶͲ Ar/ ͵ͻ ArȌ Ǧϐ ȋ Ȍ ͻǤ͵ ά ͲǤͲͷ , ͻǤͶ ά ͲǤͲʹ ȋ ͶͲ Ar/ ͵ͻ ArȌ ȋ Ȍ ȋ ȏǫȐȌ ȋ ȏǫȐȌ ȋ ȏǫȐȌ ϐ ȋ Ȍ ȋ ȏǫȐȌ ȋ Ȍ Tmat Tmvt Tmtd Tmst Qc Qoaf QTst Tmtr Qf Tmtp Ǧϐ ǡ ȋ Ȍ (cross section only) Tmtpi Qa Qls Qaf TIME-ROCK CHART CENOZOIC QUATERNARY Miocene Pliocene Pleistocene Holocene early late Millions of years * 2.58 5.333 23.03 11.63 15.97 NEOGENE late early 0.781 0.0117 0.126 middle Ύ/ŶƚĞƌŶĂƟŽŶĂů ŚƌŽŶŽƐƚƌĂƟŐƌĂƉŚŝĐ ŚĂƌƚ /ŶƚĞƌŶĂƟŽŶĂů ^ƚƌĂƟŐƌĂƉŚŝĐ ŽŵŵŝƐƐŝŽŶ ϮϬϭϯsϭ dŝŵĞ ƐĐĂůĞ ĂŌĞƌ 'ƌĂĚƐƚĞŝŶ ĂŶĚ ŽƚŚĞƌƐ ;ϮϬϬϰͿ KŐŐ ĂŶĚ ŽƚŚĞƌƐ ;ϮϬϬϴͿ ĂŶĚ ŽŚĞŶ ĂŶĚ ŽƚŚĞƌƐ ;ϮϬϭϯͿ ŚƩƉǁǁǁƐƚƌĂƟŐƌĂƉŚLJŽƌŐŝŶĚĞdžƉŚƉŝĐƐͲĐŚĂƌƚͲƟŵĞƐĐĂůĞ 33.9 KůŝŐŽĐĞŶĞ PALEOGENE middle Qaf Qa Qf dŵƚƉŝ Tmat Tmvt Tmst Tmtd dŵƚƉ Tmtr QTst Qoaf Qc Qls ? ? ? ? ? ? ? ? ? ? ƌŽƐƐ ƐĞĐƟŽŶ ŽŶůLJ SEA LEVEL 500 1000 1500 2000 FEET A 5000 3000 3500 4000 4500 2500 5500 6000 SEA LEVEL 700 500 300 100 METERS A' 1500 1300 1100 900 1700 200 400 600 800 1000 1200 1400 1600 1800 Curry Gordon Creek Devils Garden YƵĂƚĞƌŶĂƌLJ ƵŶŝƚƐ ŶŽƚ ƐŚŽǁŶ ŝŶ ĐƌŽƐƐ ƐĞĐƟŽŶ GEOLOGIC CROSS SECTIONS Ϯdž ǀĞƌƟĐĂů ĞdžĂŐŐĞƌĂƟŽŶ ;ŚŽƌŝnjŽŶƚĂů ϭϮϰϬϬϬͿ ? DĞƐŽnjŽŝĐ ;>ĂƚĞ :ƵƌĂƐƐŝĐ ƚŽ >ĂƚĞ dƌŝĂƐƐŝĐͿ ĂĐĐƌĞƚĞĚ ƌŽĐŬƐ ŽĨ ƚŚĞ /njĞĞ dĞƌƌĂŶĞ dŵƚĚ Tmtp Tmst Tmtr Fenwick Canyon Creek Foley Creek Mahogany Ridge hŶĚŝīĞƌĞŶƟĂƚĞĚ KůŝŐŽĐĞŶĞ ƚŽ ŵŝĚĚůĞ DŝŽĐĞŶĞ ǀŽůĐĂŶŝĐ ĂŶĚ ƐĞĚŝŵĞŶƚĂƌLJ ƌŽĐŬƐ ĂŶĚ ĂƐŚͲŇŽǁ ƚƵī Tmtp Tmst Tmtr dŵƚĚ Tmtr Tmtr Tmst Tmst Tmtr Tmtr dŵƚĚ QTst QTst QTst QTst dŵƚĚ Tmtr Tmtp Tmst Tmtp hŶĚŝīĞƌĞŶƟĂƚĞĚ KůŝŐŽĐĞŶĞ ƚŽ ŵŝĚĚůĞ DŝŽĐĞŶĞ ǀŽůĐĂŶŝĐ ĂŶĚ ƐĞĚŝŵĞŶƚĂƌLJ ƌŽĐŬƐ ĂŶĚ ĂƐŚͲŇŽǁ ƚƵī ? ? ? ? ? ^d/KE Ͳ Lone Pine ZŽĂĚ ŽĂů Wŝƚ ^ƉƵƌͲ 'ŽǀĞ 'ƵůĐŚ ZŽĂĚ SEA LEVEL 500 1000 1500 2000 FEET B 5000 3000 3500 4000 4500 2500 5500 6000 SEA LEVEL 700 500 300 100 METERS B' 1500 1300 1100 900 1700 200 400 600 800 1000 1200 1400 1600 1800 ? Ϯdž ǀĞƌƟĐĂů ĞdžĂŐŐĞƌĂƟŽŶ ;ŚŽƌŝnjŽŶƚĂů ϭϮϰϬϬϬͿ dŵƚĚ dŵƚƉ dŵǀƚ dŵƚƌ hŶĚŝīĞƌĞŶƟĂƚĞĚ KůŝŐŽĐĞŶĞ ƚŽ ŵŝĚĚůĞ DŝŽĐĞŶĞ ǀŽůĐĂŶŝĐ ĂŶĚ ƐĞĚŝŵĞŶƚĂƌLJ ƌŽĐŬƐ ĂŶĚ ĂƐŚͲŇŽǁ ƚƵī hŶĚŝīĞƌĞŶƟĂƚĞĚ KůŝŐŽĐĞŶĞ ƚŽ ŵŝĚĚůĞ DŝŽĐĞŶĞ ǀŽůĐĂŶŝĐ ĂŶĚ ƐĞĚŝŵĞŶƚĂƌLJ ƌŽĐŬƐ ĂŶĚ ĂƐŚͲŇŽǁ ƚƵī dŵƐƚ YĂ dŵĂƚ dŵƚƉŝ dŵƐƚ dŵƚƉ Devine Canyon ^d/KE Ͳ Silvies River ? ? ? YĂ dŵĂƚ YůƐ dŵƚƌ DĞƐŽnjŽŝĐ ;>ĂƚĞ :ƵƌĂƐƐŝĐ ƚŽ >ĂƚĞ dƌŝĂƐƐŝĐͿ ĂĐĐƌĞƚĞĚ ƌŽĐŬƐ ŽĨ ƚŚĞ /njĞĞ dĞƌƌĂŶĞ dŵƚĚ dŵƚƌ dŵƚƌ dŵƚƌ dŵƚƌ dŵƚƌ dŵƚƌ Tmtr DĞƐŽnjŽŝĐ ;>ĂƚĞ :ƵƌĂƐƐŝĐ ƚŽ >ĂƚĞ dƌŝĂƐƐŝĐͿ ĂĐĐƌĞƚĞĚ ƌŽĐŬƐ ŽĨ ƚŚĞ /njĞĞ dĞƌƌĂŶĞ hŶĚŝīĞƌĞŶƟĂƚĞĚ KůŝŐŽĐĞŶĞ ƚŽ ŵŝĚĚůĞ DŝŽĐĞŶĞ ǀŽůĐĂŶŝĐ ĂŶĚ ƐĞĚŝŵĞŶƚĂƌLJ ƌŽĐŬƐ ĂŶĚ ĂƐŚͲŇŽǁ ƚƵī DĞƐŽnjŽŝĐ ;>ĂƚĞ :ƵƌĂƐƐŝĐ ƚŽ >ĂƚĞ dƌŝĂƐƐŝĐͿ ĂĐĐƌĞƚĞĚ ƌŽĐŬƐ ŽĨ ƚŚĞ /njĞĞ dĞƌƌĂŶĞ dŵƚƉŝ dŵƚĚ dŵƚĚ dŵƚƌ dŵƚƉ dŵƐƚ dŵƚƉ dŵƐƚ dŵƚƌ dŵƐƚ dŵƚƉ dŵƚƉ dŵƚƉ dŵƚƉ ? ? Silvies River Caldera Fenwick Canyon Wilson Creek Poison Creek h^ ,ŝŐŚǁĂLJ ϯϵϱ ;:ŽŚŶ ĂLJͲƵƌŶƐ ,ǁLJͿ &ŽůĞLJ ƌŝǀĞ DƵĚ ^ƉƌŝŶŐͲ ^ƵŶŇŽǁĞƌ &ůĂƚ ZŽĂĚ >ŽŶĞ WŝŶĞ ZŽĂĚ Stream Intermittent stream Digital elevation model (1-meter) derived elevation Location of whole-rock XRF geochemical analysis sample; open circle where multiple data points overlap D 1514' Cross section line Normal fault — Thick solid line where accurately located, long-dashed where approximate, short-dashed where inferred, dotted where concealed, queried where identity or existence questionable. Ball and bar on downthrown block Contact — Solid line where accurately located, long-dashed where approximate, short-dashed where inferred, dotted where concealed, queried where identity or existence questionable Caldera margin — Identity and existence certain, location concealed. Ticks point into caldera Fault — Thick solid line where accurately located, long-dashed where approximate, short-dashed where inferred, dotted where concealed, queried where identity or existence questionable EXPLANATION OF SYMBOLS 8.41 ± 0.15 Ma Location of radiometric age sample, age in millions of years (Ma) Gently inclined (between 0Ɠ and 30Ɠ) bedding, as determined remotely or from aerial photographs; showing approximate strike and direction of dip 2 A' A Normal fault (in cross section) — Short-dashed line where inferred, dotted where approximate. Arrows show relative motion ! PG4 ! [ 395 Road U.S. highway M Syncline — Thick solid line where accurately located, long-dashed where approximate, short-dashed where inferred, dotted where concealed, queried where identity or existence questionable Horizontal bedding, as determined remotely or from aerial photographs 119°0'0"W 119°0'0"W 120°0'0"W 44°0'0"N 44°0'0"N 43°0'0"N 43°0'0"N Frenchglen Burns Seneca 15 5 4 8 14 9 10 7 11 12 13 16 17 18 21 19 20 23 24 25 27 26 22 6 2 1 3 395 78 205 20 395 20 HARNEY COUNTY Malheur Lake Harney Lake USGS geologic mapping completed DOGAMI geologic mapping completed FY 2016 - 2019 EdMap project areas (Portland State University, Oregon) FY 2018 DOGAMI STATEMAP (this study) 1. Big Canyon Ϯ :ƵŵƉͲKī :ŽĞ DŽƵŶƚĂŝŶ ϯ ĂůĂŵŝƚLJ ƵƩĞ 4. Landing Creek 5. Mosquito Flat 6. Devine Ridge North ϳ dĞůĞƉŚŽŶĞ ƵƩĞ 8. Burns Northwest 9. Poison Creek (this study) 10. Devine Ridge South 11. Harney 12. Buchanan ϭϯ ^ƟŶŬŝŶŐǁĂƚĞƌ WĂƐƐ ϭϰ ƵƌŶƐ ƵƩĞ 15. Burns (this study) 16. Mahon Creek 17. Crane 18. New Princeton 19. Southeast Harney Lake ϮϬ ŽLJŽƚĞ ƵƩĞƐ 21. Adobe Flat ϮϮ dǁŝŶ ƵƩĞƐ Ϯϯ :ĂĐŬĂƐƐ ƵƩĞ 24. Irish Lake 25. Krumbo Reservoir 26. Frenchglen 27. Page Springs U.S. Geological Survey 7.5’ Quadrangles by Number FY 2019 DOGAMI STATEMAP geologic mapping Future DOGAMI geologic mapping targets OREGON Basin Map Extent Stream County boundary Harney basin hydrologic boundary Waterbody Route State Federal 78 395 APPROXIMATE MEAN DECLINATION, 2019 14.02 MAGNETIC NORTH TRUE NORTH Burns ƵƩĞ ĞǀŝŶĞ ZŝĚŐĞ South Burns NW >ĂŶĚŝŶŐ ƌĞĞŬ WŽŝƐŽŶ ƌĞĞŬ ^ůŽƵŐŚ ĞǀŝŶĞ ZŝĚŐĞ North WŽŝƐŽŶ ƌĞĞŬ DŽƐƋƵŝƚŽ Flat Burns U.S. Geological Survey 7.5-minute quadrangles. Map plate extent shown with a filled brown polygon. OREGON 1 0 1 0.5 MILE 1 0 1 0.5 KILOMETER Contour interval is 40 feet. SCALE 1:24,000 (1 inch equals 2000 feet) GMS-123 Geologic Map of the Poison Creek and Burns 7.5' Quadrangles, Harney County, Oregon By Jason D. McClaughry, Carlie J.M. Duda, and Mark L. Ferns PLATE 1 2019 Geologic Map of the Poison Creek 7.5' Quadrangle, Harney County, Oregon DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES STATE OF OREGON BRAD AVY, STATE GEOLOGIST www.oregongeology.org O R E G O N D E P A R T M E N T O F G E O L O G Y A N D M I N E R A L I N D U S T R I E S 1 9 3 7 Geologic mapping of the Poison Creek 7.5' quadrangle was supported in part by a grant from the STATEMAP component of the National Cooperative Geologic Mapping Program (G18AC00136). Additional funds were provided by the State of Oregon. B B' A' A 119°0'0"W 119°0'0"W 119°7'30"W 119°7'30"W 43°45'0"N 43°37'30"N 43°45'0"N 43°37'30"N 330000E 330000E 335000E 335000E 4835000N 4835000N 4840000N 4840000N 4845000N 4845000N NOTICE: This manuscript is submi�ed for publica�on with the understanding that the United States Government is authorized to reproduce and distribute reprints for governmental use. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily represen�ng the official policies, either expressed or implied, of the U.S. government. This product is for informa�onal purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Users of this informa�on should review or consult the primary data and informa�on sources to ascertain the usability of the informa�on. This publica�on cannot subs�tute for site-specific inves�ga�ons by qualified prac��oners. Site-specific data may give results that differ from the results shown in the publica�on. Source Data: Three-foot bare earth lidar digital elevation model for Poison Creek (43119-F1) quadrangle derived from multiple Oregon Lidar Consortium airborne lidar surveys: Harney 3-DEP 2018 and Burns 2011. These data are distributed through the Oregon Department of Geology and Mineral Industries (DOGAMI) Lidar Program (https://gis.dogami.oregon.gov/maps/lidarviewer/). Water features from USGS High Resolution National Hydrography Dataset (NED): Aquatic Resources Information System (ARMIS) (2017). Road features from Oregon Department of Transportation (ODOT) (2015). Projection: Oregon Statewide Lambert Conformal Conic, Unit: International Feet, Horizontal Datum: NAD 1983 HARN. UTM Coordinates: Zone 11N, NAD83. Software: Esri ArcGIS® v10.6 and Adobe® Illustrator® 2019 v23.0.3 Field Work: Field work conducted in 2018 and 2019 by Jason D. McClaughry, DOGAMI; Carlie J.M. Duda, DOGAMI; and Darrick Boschmann, Oregon Water Resource Department References: Cohen, K. M., Finney, S. C., Gibbard, P.L. and Fan, J.-X, 2013, The ICS International Conostratigraphic Chart: Episodes 36, p. 199-204. Gradstein, F. M., Ogg, J. G., and Smith, A. G., eds., 2004, A geologic time scale: Cambridge, U.K., Cambridge University Press, 589 p. Ogg, J. G., Ogg, G., and Gradstein, F. M., 2008, The concise geologic time scale: New York, Cambridge University Press, 184 p. Geology Reviewers: Martin Streck, Portland State University, Oregon; Josh Hackett, Oregon Water Resource Department; Clark A. Niewendorp, DOGAMI (retired); Ian P. Madin, DOGAMI; and Robert A. Houston, DOGAMI. Digital Cartography: Jon J. Franczyk, DOGAMI HARNEY BASIN LOCATION MAP