Late Cenozoic Geology Of The Middle Owyhee River Area

Late Cenozoic lava flows, landslides, alluvium, and hillslope deposits of the middle Owyhee River area, Southeastern Oregon 117°42'0"W

117°35'0"W

117°28'0"W

Doubl e lands Spring lide co mplex

MT MT WA WA

ID ID

43°14'0"N

OR OR

43°14'0"N

CA CA

NV NV

Greeley lava dam

South H

ole in th

e Groun

d L an d s

lide Com

plex

G re

e le

Bogus Rim lava dam

yl

av a

ot Coffee P lava

43°7'0"N

43°7'0"N

Bo

Bo

gu

gu

im sR

Lambert Rocks landslide complex

sR

im

la n

lav

ds

a

lid ex pl om ec

landslide

va

com

la

ple

x

a v a

e lava

r te

e

l

Clarks Bu tt

ra tC

S

l d ad

B

te t u

es W

West Crater Lava Dam

Ri

m

'Dreaded' Rim gravels Ar

ry e l til

Rocky Butte lava

Saddle Butte Lava Dam 43°0'0"N

lex

Generalized Geologic Units Playa / paludal deposits, Recent to late Pleistocene

Lava-dam lacustrine deposits, Pliestocene

om p ec

'Extrafluvial' Deposits Landslides, Holocene to Pleistocene

River gravel, Pleistocene Flood boulder bar, Pleistocene

av He

River gravel, Pleistocene to Pliocene

117°42'0"W

A digital geoproduction of ORIGIN: Owyhee River Interstate Geological Investigation Network

²

Fluvial gravel, early Pleistocene to Pliocene Piedmont alluvium, Recent to Holocene Piedmont alluvium, late Pleistocene Piedmont alluvium, middle to early Pleistocene Piedmont alluvium, undivided, Pleistocene

Intracanyon lava flows

slid

River terrace sediments, late Holocene to Pleistocene

lan d

te Ga

Hillslope talus and colluvium, Holocene to Pleistocene

River Alluvium, Recent

en

's

Eolian deposits, Recent to late Pleistocene

Spring deposits, Holocene

Bullseye landslide

University of Nevada Central Washington University Lewis and Clark College United States Geological Survey University of Oregon Oregon State University United States Forest Service

43°0'0"N

Coffee Pot Crater lava, Holocene Rocky Butte lava flow, Holocene West Crater lava flow, late Pleistocene Saddle Butte lava flow, early late Pleistocene Clarks Butte lava flow, middle Pleistocene Greeley Bar lava flow, Pleistocene Bogus Rim lava flow, early Pleistocene to Pliocene Undivided lava, early Pleistocene to Pliocene

Piedmont alluvium, early Pleistocene to Pliocene

117°35'0"W

117°28'0"W

Geology by P.K. House, C.C. Brossy, J.E. O'Connor, N.R. Bondre, D.E. Champion, S. Othus, L.L. Ely, E.B. Safran, K.V. Cashman, and G.E. Grant; geologic map datum, UTM WGS84