Geologic Overview of Santa Catalina Island Catalina Island

Geologic Overview of Santa Catalina Island

Catalina Island

Continenta l Borderland

Pt. Conception Vizcaino

Co nt i ne nt al Cr us t Oc ea ni c Cr us t

Continental Borderland

Peninsular Ranges

EVENTS ERA T Translation Transtension, Transpression Terracing LATE CENOZOIC U Under-plating Uplift Un-roofing Undulating EARLY CENOZOIC M Magmatic Madness Metamorphism MESOZOIC S Stable Shelf Sedimentation PALEOZOIC

EVENTS ERA Translation Transtension, Transpression Terracing LATE CENOZOIC Under-plating Uplift Un-roofing Undulating EARLY CENOZOIC Magmatic Madness Metamorphism MESOZOIC Stable Shelf Sedimentation PALEOZOIC

EVENTS ERA Translation Transtension, Transpression Terracing LATE CENOZOIC Under-plating Uplift Un-roofing Undulating EARLY CENOZOIC Magmatic Madness Metamorphism MESOZOIC Stable Shelf Sedimentation PALEOZOIC

ARIZONA SAN DIEGO Ocean Crust Stable Continental Crust (craton) Limestone

EVENTS ERA Translation Transtension, Transpression Terracing LATE CENOZOIC Under-plating Uplift Un-roofing Undulating EARLY CENOZOIC Magmatic MESOZOIC Madness Metamorphism Stable Shelf Sedimentation PALEOZOIC

Volcanic Arc Craton Farallon Pla te North American Plate

North American Plate

North American Plate ?

North American Plate Farallon Plate

North American Plate ? Farallon Plate

North American Plate Pacific Plate Farallon Plate

North American Plate ? Pacific Plate Farallon Plate

North American Plate East Pacific Rise Pacific Plate Farallon Plate

East Pacific Rise

North American Plate ? East Pacific Rise Pacific Plate Farallon Plate

North American Plate East Pacific Rise Pacific Plate Forearc Basin Farallon Plate

North American Plate Forearc Basin East Pacific Rise Pacific Plate ? Farallon Plate

North American Plate East Pacific Rise Pacific Plate Asthenosphere Forearc Basin Farallon Plate

North American Plate East Pacific Rise Pacific Plate Asthenosphere Forearc Basin ? Farallon Plate

North American Plate East Pacific Rise Pacific Plate Asthenosphere Forearc Basin Accretionary Wedge Farallon Plate

Accretionary Wedgie

Accretionary Wedgie

Klamath? Mélange

Turbidite Klamath? Mélange

Turbidite nt e r r u c ity d i b r u t Klamath? Mélange

Shale Sandst one Shal e

Greywacke

Grey wacke

Shale

Catalina Turbidite Shale Greywacke

Wedgie composition 1. Turbidite (overwhelmingly greywacke)