THE 1980-1982 GEOTHERMAL RESOURCE ASSESSMENT PROGRAM IN WASHINGTON by Michael A. Korosec, William M. Phillips, and J. Eric Schuster with contributions from Z . F . Danes, J . H . Biggane, P .E . Hammond, and G.A. Clayton With chapters on thermal springs, gravity investigations, heat-flow drilling, low-temperature resources in eastern Washington, geology of the south Cascades and White Pass areas, and targets for geothermal resource exploration Washington State Department of Natural Resources Division of Geology and Earth Resources Olympia, Washington 98504 Open File Report 83-7 Prepared Under U . S . Department of Energy Contract No. DE-AC07-79ET27014 August 1983 THE 1980-1982 GEOTHERMAL RESOURCE ASSESSMENT PROGRAM IN WASHINGTON by Michael A . K o r o s e c , William M . Phi l l i p s , and J . Eric Schuster with con t r ibu t ions from Z . F . D a n e s , J . H . Biggane, P . E . Hammond, and G . A . Clayton With c h a p t e r s on t h e r m a l s p r i n g s , grav i ty inves t iga t ions , h e a t - f l o w d r i l l i n g , l o w - t e m p e r a t u r e resources in e a s t e r n Washington, geology of the south Cascades and White Pass a r e a s , and t a r g e t s for geothermal resource explora t ion Washington S t a t e Depar tment of Natura l Resources Division of Geology and Earth Resources Olympia , Washington 98504 Open File Report 8 3 - 7 Prepared Under U . S . Depar tment of Energy Cont rac t N o . DE-AC07-79ET27014 August 1983 CONTENTS 1 . I n t r o d u c t i o n 1 2 . Geothermal program p u b l i c a t i o n s 5 3 . Surveys and geochemical a n a l y s e s of thermal and minera l s p r i n g s in Washington, 1980-1981 by Michael A. Korosec 8 I n t r o d u c t i o n 9 Methods 10 R e s u l t s 1 Discus ion 21 Individua l s p r i n g system i n v e s t i g a t i o n s 34 Ahtanum Soda Spr ings 35 Geothermal f e a t u r e s 35 Geology 36 Heat flow 37 Coments 37 Bumping River Soda Spr ings 38 Geothermal f e a t u r e s 38 Geology 39 Heat flow 39 Coments 40 Flaming Geyser Spr ings 41 Geothermal f e a t u r e s . 41 Geology 42 Heat flow 43 Coments 43 Goldmeyer Hot Spr ings 4 Geothermal f e a t u r e s 4 Geology 45 Heat flow 45 Coments 46 Government Mineral and L i t t l e Soda Spr ings 47 Geothermal f e a t u r e s 47 Geology 49 Heat flow 50 Coments 50 K l i c k i t a t Mineral Spr ings 51 Geothermal f e a t u r e s 51 Geology 53 Heat flow 53 Coment 54 Rock Crek Hot Spr ings 5 Geothermal f e a t u r e s 5 Geology 56 Heat flow 57 Coments 57 Scenic Hot Spr ings 58 Geothermal f e a t u r e s 58 Geology 60 Heat Flow 61 Coments 61 S t . Mart in s (Carson) and Shipherds Hot S p r i n g s . . . 62 Geothermal f e a t u r e s 62 G e o l o g y . . . . . 63 Heat flow 64 Coments 65 References 6 4 . Progress repor t for the reg iona l g r a v i t y survey of the Cascade Mountain Range, Washington, by Wil l iam M. P h i l l i p s 68 I n t r o d u c t i o n 69 Discus ion 69 Conclusion 7 R e f e r e n c e s . . . 78 5 . Pre l iminary i n t e r p r e t a t i o n of regiona l g r a v i t y informat ion from the southern Cascade Mountains of Washington, by Wil l i am M. P h i l l i p s . 79 I n t r o d u c t i o n 80 Regional geology 81 Regional g r a v i t y p a t t e r n s 91 I n t e r p r e t a t i o n of g r a v i t y d a t a 93 D i s c u s s i o n 109 Conclusion 16 References 18 6 . Heat-Flow D r i l l i n g in Washington dur ing 1981, by Michael A. Korosec and J . Eric Schus te r 120 I n t r o d u c t i o n 121 R e s u l t s 123 D e s c r i p t i o n of u n i t s p e n e t r a t e d by d r i l l holes 123 Scenic No. 1 123 Scenic No. 2 123 Snoqualmie No. 1 152 Snoqualmie No. 2 152 White River 152 Clear Crek 153 Sand Ridge 153 T i e t o n Wilows 153 Trout Crek 154 Carson 154 K l i c k i t a t 15 North Bonev i l l e Nos. 1 , 2 , and 3 15 References 157 7 . The low tempera tu re geothermal resources of Eas te rn Washington, by Michael A. Korosec , Wil l i am M. P h i l l i p s , and J . Eric Schus te r 159 I n t r o d u c t i o n 160 Past work and some inheren t problems 161 Data sources 161 Botom hole tempera tu re 162 S u r f a c e tempera tu re 163 New d a t a c o l l e c t i o n 164 Data m a n i p u l a t i o n 164 Cascades 167 Columbia Basin 175 Yakima and Ahtanum-Simcoe areas 175 Moses L a k e - R i t z v i l l e - C o n n e l l areas 176 Lincoln 176 Douglas 1 77 Horse Heaven H i l l s 17 Lower Yakima Val l ey 17 Wala Wala 17 Other areas 178 Conclusion 178 References 179 8 . Progress Report of the Time-Space-Composi t ion Model for the Quaternary V o l c a n i c s of the South Cascades , Washington, by Paul E. Hamond and Michael A. Korosec 180 I n t r o d u c t i o n 181 Work to d a t e 182 Discus ion 182 Future work 1 90 References 191 9 . Pliocene and P l e i s t o c e n e Volcan i c H i s t o r y of the White Pass-Tumac P l a t e a u Region, Washington by G e o f f r e y A. Clayton 192 I n t r o d u c t i o n 193 Regional geology 194 Pliocene and P l e i s t o c e n e volcan i sm 196 R h y o l i t e s (and b a s a l t ) of the D e v i l s Horns 201 F i e l d o c c u r r e n c e 203 Rock d e s c r i p t i o n 205 Geologic r e l a t i o n s and s i g n i f i c a n c e 205 D e v i l s Washbasin b a s a l t 206 P o r p h y r i t i c a n d e s i t e of the Goat Rocks volcano 208 F i e l d ocu r r ence 209 Rock d e s c r i p t i o n 210 Geologic r e l a t i o n s and s i g n i f i c a n c e 210