U. S. DEPARTMENT OF THE INTERIOR OPEN-FILE REPORT 02-490 U. S. GEOLOGICAL SURVEY SHEET 2 0F 2 CORRELATION OF THE KLAMATH MOUNTAINS AND SIERRA NEVADA Z 156 Sheet 2: Successive accretionary episodes of the Klamath Mountains and northern part of Sierra Nevada, Bc Galice Fm Bc Bc showing related plutonic, volcanic, and metamorphic events Z~160 Z139 Z155 Z 148 By William P. Irwin -160 Z 154 W e P s r o t e t r o 2003 Z~160 n W K e l H 148 a s m Z 174 t e Z~161 a r n t h K t Z 162 e l a r r m a a n t e h Bc t T H 165 e Z162 r Z 149 r a Z 153 Z 142-145 n e f j f j YREKA YREKA f j f j YREKA YREKA YREKA YREKA YREKA YREKA ( P Z 146 e r m F P ( o M r i F F F a o F r e o o F o h 138 n t t o o t r Z 150 r r o a P r t H 167 t ane ane t J t o r t m ane E ane r ane o t ane J o J E J a o o J ane n Z 162 Z~567 t o o J o s a Yreka Yreka r o n Yreka e p n t o r Yreka n e e Yreka n s l Yreka h N Yreka e y n Yreka e r s e P subterr o ( subterr n s P o subterr subterrane e subterr s D subterr J subterr t s Z 415 s r r e t r u s e o e e t o H subterr Z 193-208 t h r r t Z~160 N d e P t v r t t a r e a o e o r t a o N r o a s r e T r N Z~159 F y Z 174 r N r o N n n r s r -164 a n r o r r f W o a P i t R o o t a r i o i e a e n o o r a c h r a n r r r r t n P s k e a e r n Z 404 k o t h H 418 t n e o w h s t e h s t F r t h F c t e o Tr i nity T i o o t t c l o e e e RS 162 F e o F e r 439 Tr i nity t F r r o r w a a Tr i nity F o r o s r o C n t subterrane Tr inity r o r Tr i nity Tr i nity k n n a r n Tr i nity o r l Tr i nity a subterrane b 136 e d k r k P i d J n subterrane a r n H c k n e Z141 subterrane subterrane subterrane t k ane o ek e ek subterr k ane i ek e ek subterr e t ek t a r ek ek c s e t o n r e t e r -145 y k u a ( r t e l E r e v d f e e E e r r b l o a r o a r C s x e cm a t C r cm r d r a a n t l cm M Z 431 n H 138 o r k cm a c r E s h 137 cm cm r u s a e n e t e e t a n t o P e i c t e a n n c e e t e e n e Z 149 c t e t e r t r e a s i p~167 k r i e f j f j r r o r n c o f j C C a f j n m a r t a C f j a n a Z 141 c e C k e e n l t f j n a e C n o e r e H H c p 120-130 e n n -145 e i a e n n r M n t c e r o t a t e p n a n r C d t n r r m a y s e r y h r ( t a a i e Redding a c t v r n f r u t r Z~168H f i a l o l p a o s c a o n a l e b McCloud fauna r l n e l m l l a r m E M k M t subterrane e c k d M wk r e d t y a Redding subterrane ane x e M a M ( a e subterr u Redding e e Redding subterrane o f , i o ) e l n s t t l m r c o t e r subterrane a e e t e r Redding i p a a Tr iassic t c r t C t p r a a n t Redding subterrane t e Redding subterrane r M e i a k a h m r m o h g r r n m i a o a n n Ichthyosaur e m is m Redding subterrane o n W e e i h 189 o n o a n t c l Z~170 W W t a o ) o l R R c Z 260 a o i r e r s e a t H p Z 147-151 e p r o r r n t i a e t p p e r c e a a s ek t m y Z 400 m ek e d r p s y ek h t t h t s ek ek h ek h ek i t e i R t t o r r r h m te f c l c le e o p r i ic a a o e r r a c i n a r c l r n c r r s s n p e c e n k t n t n n k x n t ) e l e e h e t e t a a H g a s ) e r e H t r r H i ) r n e r k a r e k c r a r a r a e y a e a r r g r s y Z 136 REDDING a REDDING n a e y a n REDDING fo n REDDING f t REDDING REDDING e REDDING n REDDING fo e C e C o e n ) r p r Z 170 e r r k r rk r e k e r e a t e t o e e k e v k te n Abrams and r rr i r e ra t a n t ra Note: cm Central Metamorphic terrane Z 193 n e n c e n Salmon Schists Bully Choop Fault Z 169 e r e e r T ra ra e Proto Siskiyou Fault Siskiyou Fault ek Eastern Klamath terrane Z 147-151 n n Twi n Sisters Fault e e fj Fort Jones terrane T Z 170 Wilson Point Fault Z 207 wk Western Klamath terrane Z~169 Bc Buchia concentrica Z 193 Z 198 Salt Creek Fault T Tethyan fauna South Fork Mtn Schist Volcanic unit Bear Wallow Fault South Fork Fault Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Central Metamorphic episode Fort Jones Episode North Fork episode Eastern Hayfork episode Western Hayfork episode Rattlesnake Creek episode Western Klamath episode Separation episode Late Silurian(?) to Devonian time Permian–Triassic time Early Jurassic time early(?) Middle Jurassic late Middle Jurassic (Bathonian to late Middle to early Late Jurassic Late Jurassic (late Kimmeridgian to Early Cretaceous time (~Bajocian) time early Callovian) time (Callovian to early Oxfordian) time early Tithonian) time (~150 Ma) (~140 Ma to ~120 Ma) Per mian Tr iassic Feather River Ichthyosaur Z378 Tay terrane lorsville Tay vol McCloud fauna M lorsvill canic E M id a i d Z314 r d l l T e Ta y a d Ta T y l T a T y e a y a l lo y J l y e seque sequence o l o l Z140 y Ca r J Ca r Ca o u Ca r Ca o lo la u la s la la s la r ve s ve ve r r ve ve r Feather ra v ra v J ra s ra v ra s s s r s i s v a s s v Z140 i a l u i v River t l t l t i s t l t i e l e e r e l e l e l i e s l s e l l rr rr a rr e rr rr e l a s a a a a e terrane arc s i n s n s n c n s n i s nce c e s e e e s e e e e s e v e Z142 q Z204 e q i q c q o q u q u Z193 u Ce v n u u l e t Z142 c r u e e o a e e n v l a Z141 e n Z196 n l n n c o c n b Z142 n c c c a c e l e i c Z423 e e c Z209 c e e l n a t e sequence i a n Red Ant Schist c Oceanic subduction complex r i c Z168 c Z207 Z164 a r a c Z168 Z140 r c Z166 Z409 Z205 Z388 Shoo Fly Z385 Z368 Z159 Z128 Z159 E Z385 Shoo Fly Shoo Fly Z159 Z162 a r Shoo Fly Shoo Fly Shoo Fly Shoo Fly l Z385 Z161 Z162 y Oceanic Z164 C Contin Contin Z159 Z159 r Z163 e Z158 Comple t Proto a Comple Comple c Shoo Fly Complex Z163 Z159 e Complex Comple Comple Comple ued subduction of oceanic co ued subduction of oceanic co o u subdu s x Calaver x x s u x x x ction c b Z162 d u c as t i o Z170 Auburn Auburn n Auburn omplex terrane z Z163 o n Z165 e Z142 Z162 a t Z143 u Z166 n Z133 c e r mple mple Z152 t Z304 a i Cala Cala Z170 Z150 n Z286 x x d i ver ver s t a as terr as terr n c e Cala a 124° 122° 120° n ane ane Pe T Z~165 ver d r Z175 as mian-T Z160 l T o Medford c Shoo Fly a K L A M A T H t M T N S OREGON i 42° ria Z177 o CALIFORNIA n ssic oceanic Z216subd T fau M O D O C w lt e P L A T E A U s Z170 t Z162 o Eureka f Redding Z151 S Z173 Z164 ie uction co r 40 r ° Z190 a Chico Z166 Z148 Cala Z199 Cala N Cala P Z163 C O A S Z198 ? e A ver Z162 ver v ver mplex Cala Bear Mountains F a G R E d C S I E as terr Z182 as terr as terr Don P a Don P ver Sonora F I T Z200Don Pedro terr ? ? NEVADA ? F Sacramento as terr A R R A N ane ane ane T edr edro terr I R Z196 V A ? ? ault ? C 38° o terr ane San Francisco ? ault ? ? A ane ane L L O N ane C G E E V A D A Z149 Z150 E E Y Sonora Fault S Mariposa Fm A Z147 Z151 Melones N S A L I N IS a n Melones Fault Z146 Z151 Z138 A Fau 36° n d r e a s F a u A N lt B L O C l t Bakersfield K Index map showing present geographic alignment of the Klamath Mountains and the Sierra Nevada.