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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Ethiopia (1)
-
-
-
Agua Blanca Fault (4)
-
Asia
-
Far East
-
Indonesia
-
Sumatra (1)
-
-
Japan
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Honshu
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Iwate Japan
-
Kakkonda Field (1)
-
Onikobe Field (1)
-
-
-
-
Philippine Islands (2)
-
-
Middle East
-
Turkey (2)
-
-
-
Atlantic Ocean
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North Atlantic
-
North Sea (1)
-
Reykjanes Ridge (1)
-
-
-
Australasia
-
New Zealand
-
Wairakei (1)
-
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Papua New Guinea
-
New Britain (1)
-
-
-
Canada
-
Eastern Canada
-
Quebec (1)
-
-
Western Canada
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British Columbia
-
Vancouver Island (6)
-
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Yukon Territory (1)
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-
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Central America
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Costa Rica (1)
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Guatemala (1)
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Panama
-
Panama Canal Zone (1)
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-
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Cerro Prieto (6)
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Coast Ranges (4)
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Colorado River (2)
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Diablo Range (1)
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Europe
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Central Europe
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Germany
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Hesse Germany
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Taunus (1)
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Lower Saxony Germany
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East Frisian Islands (1)
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Rhenish Schiefergebirge
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Taunus (1)
-
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Southern Europe
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Greece
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Greek Aegean Islands (1)
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Italy
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Tuscany Italy
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Larderello (1)
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Western Europe
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Iceland (1)
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Indian Ocean
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Mozambique Channel (1)
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Malay Archipelago (1)
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Mediterranean region
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Aegean Islands
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Greek Aegean Islands (1)
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Mexico
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Baja California (267)
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Baja California Mexico
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Cerro Prieto Field (2)
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Mexicali Mexico (4)
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Baja California Sur Mexico
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Loreto Basin (1)
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Vizcaino Peninsula (6)
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Chiapas Mexico
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Colorado River delta (5)
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Guerrero Terrane (2)
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Jalisco Mexico (1)
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Mexico state
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Michoacan-Guanajuato volcanic field (1)
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Oaxaca Mexico (2)
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Popocatepetl (1)
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Puebla Mexico
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Los Humeros (1)
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Sierra Madre Occidental (1)
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Sinaloa Mexico (2)
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Sonora Mexico (11)
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Trans-Mexican volcanic belt (2)
-
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North America
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Appalachian Basin (1)
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Basin and Range Province
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Great Basin (1)
-
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Cerro Prieto Fault (3)
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Gulf Coastal Plain (1)
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Mexicali Valley (6)
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North American Cordillera (2)
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North American Craton (1)
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Peninsular Ranges Batholith (10)
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Sonoran Desert (1)
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North Island (1)
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Pacific Coast (9)
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Pacific Ocean
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East Pacific
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East Pacific Rise (1)
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Northeast Pacific
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Gulf of California
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Guaymas Basin (1)
-
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Middle America Trench (1)
-
-
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North Pacific
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Northeast Pacific
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Gulf of California
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Guaymas Basin (1)
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Middle America Trench (1)
-
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-
Pacific region
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Circum-Pacific region (1)
-
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Peninsular Ranges (18)
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San Andreas Fault (9)
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San Jacinto Fault (2)
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San Joaquin Basin (1)
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California
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Channel Islands (1)
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Contra Costa County California (2)
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Elsinore Fault (2)
-
Fresno County California (3)
-
Imperial County California
-
Imperial Fault (4)
-
-
Lake County California (2)
-
Los Angeles County California (3)
-
Mariposa County California (2)
-
Orange County California (2)
-
Salinian Block (2)
-
Salton Trough (4)
-
San Benito County California (1)
-
San Diego County California
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La Jolla California (1)
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San Diego California (2)
-
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San Joaquin Valley (1)
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San Luis Obispo County California
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Carrizo Plain (1)
-
-
Santa Ana Mountains (2)
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Santa Barbara County California (1)
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Santa Cruz County California (2)
-
Shasta County California (2)
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Southern California (28)
-
Southern California Batholith (1)
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Tehama County California (1)
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Tulare County California (1)
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Ventura County California
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Colorado (2)
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Ohio (1)
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Utah (1)
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Yucatan Peninsula (1)
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chemical ratios (1)
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hydrogen
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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stable isotopes
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deuterium (1)
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Hf-177/Hf-176 (1)
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Nd-144/Nd-143 (3)
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O-18/O-16 (1)
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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Sr-87/Sr-86 (5)
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metals
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actinides
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uranium (1)
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alkali metals
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potassium (1)
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alkaline earth metals
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barium (1)
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beryllium
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Be-10 (1)
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-
magnesium (1)
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strontium
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Sr-87/Sr-86 (5)
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copper (2)
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hafnium
-
Hf-177/Hf-176 (1)
-
-
iron (1)
-
lead
-
Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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manganese (4)
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mercury (1)
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niobium (1)
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rare earths
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neodymium
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Nd-144/Nd-143 (3)
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silver (1)
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titanium (1)
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nitrogen (1)
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oxygen
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O-18/O-16 (1)
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fossils
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Reptilia
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Saurischia
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cyanobacteria (2)
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ichnofossils
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Invertebrata
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Arthropoda
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Mandibulata
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Cirripedia (1)
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Brachiopoda
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Inarticulata
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Lingula (1)
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Bryozoa
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Cheilostomata (1)
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Cnidaria
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Anthozoa (2)
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Echinodermata
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Asterozoa
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Stelleroidea
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Asteroidea (1)
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Crinozoa
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Crinoidea (2)
-
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Echinozoa
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Echinoidea (3)
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-
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Mollusca
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Bivalvia
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Heterodonta
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Rudistae (3)
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Veneroida
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Veneridae
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Chione (3)
-
-
-
-
-
Cephalopoda
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Ammonoidea
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Ammonites (1)
-
-
-
Gastropoda
-
Mesogastropoda (1)
-
Naticidae (1)
-
Neogastropoda (2)
-
-
-
Protista
-
Foraminifera
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Fusulinina
-
Fusulinidae (2)
-
-
-
Radiolaria
-
Spumellina (2)
-
-
-
Vermes
-
Annelida (1)
-
-
-
microfossils
-
Conodonta (4)
-
Fusulinina
-
Fusulinidae (2)
-
-
-
palynomorphs
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Dinoflagellata (2)
-
-
Plantae
-
algae
-
calcareous algae (2)
-
diatoms (1)
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Rhodophyta (1)
-
-
-
thallophytes (5)
-
-
geochronology methods
-
(U-Th)/He (1)
-
Ar/Ar (5)
-
fission-track dating (3)
-
K/Ar (5)
-
Nd/Nd (1)
-
paleomagnetism (19)
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racemization (1)
-
Rb/Sr (2)
-
Sr/Sr (1)
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thermochronology (1)
-
U/Pb (12)
-
-
geologic age
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Cenozoic
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Quaternary
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Holocene
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upper Holocene (1)
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Pleistocene
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middle Pleistocene (1)
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Tertiary
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Neogene
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Etchegoin Formation (1)
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Miocene
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middle Miocene (2)
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upper Miocene (1)
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Pliocene
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middle Pliocene (1)
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upper Pliocene (1)
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upper Neogene (1)
-
-
Paleogene
-
Eocene
-
lower Eocene
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Wasatchian (1)
-
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upper Eocene
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Poway Conglomerate (1)
-
-
-
Oligocene (3)
-
Paleocene
-
lower Paleocene
-
Danian (1)
-
-
upper Paleocene
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Thanetian (1)
-
-
-
Santa Susana Formation (2)
-
-
-
upper Cenozoic
-
Pico Formation (1)
-
-
-
Mesozoic
-
Cretaceous
-
Alisitos Formation (8)
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Lower Cretaceous
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Albian (4)
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Aptian (2)
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Barremian (1)
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Hauterivian (1)
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Valanginian (1)
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Middle Cretaceous (2)
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Upper Cretaceous
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Campanian (10)
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Cenomanian (1)
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Coniacian (2)
-
Ladd Formation (3)
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Maestrichtian (10)
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Moreno Formation (1)
-
Point Loma Formation (1)
-
Rosario Formation (13)
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Santonian (2)
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Senonian (12)
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Turonian (4)
-
-
-
Franciscan Complex (3)
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Great Valley Sequence (3)
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Jurassic
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Middle Jurassic (1)
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Upper Jurassic
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Portlandian (1)
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Tithonian (1)
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-
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Triassic
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Lower Triassic (2)
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Upper Triassic (4)
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upper Mesozoic (2)
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Paleozoic
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Cambrian
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Carboniferous
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Mississippian (1)
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Devonian (3)
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middle Paleozoic (1)
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Ordovician
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Valmy Formation (1)
-
-
Permian
-
Lower Permian
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Leonardian (1)
-
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Rustler Formation (1)
-
Upper Permian
-
Salado Formation (1)
-
-
-
Shoo Fly Complex (1)
-
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Phanerozoic (2)
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (2)
-
-
-
-
-
igneous rocks
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igneous rocks
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hypabyssal rocks (1)
-
plutonic rocks
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diorites
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tonalite (9)
-
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gabbros (1)
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granites (4)
-
granodiorites (4)
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lamprophyres (1)
-
ultramafics
-
chromitite (1)
-
-
-
volcanic rocks
-
adakites (3)
-
basalts
-
alkali basalts (1)
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mid-ocean ridge basalts (1)
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tholeiite (1)
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tholeiitic basalt (1)
-
-
pyroclastics
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ash-flow tuff (1)
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ignimbrite (1)
-
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rhyodacites (1)
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rhyolites (2)
-
-
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ophiolite (2)
-
-
metamorphic rocks
-
metamorphic rocks
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marbles (1)
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metaigneous rocks
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serpentinite (2)
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metasedimentary rocks
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metasandstone (1)
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metasomatic rocks
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metavolcanic rocks (1)
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schists
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blueschist (1)
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ophiolite (2)
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turbidite (6)
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minerals
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carbonates
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dolomite (1)
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halides
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chlorides
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minerals (5)
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oxides
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iron oxides (2)
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phosphates
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apatite (2)
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silicates
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chain silicates
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amphibole group
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clinoamphibole
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hornblende (2)
-
-
-
pyroxene group
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clinopyroxene (1)
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
celsian (1)
-
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barium feldspar
-
celsian (1)
-
-
-
nepheline group
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nepheline (1)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (8)
-
-
-
sorosilicates
-
axinite group (1)
-
epidote group
-
epidote (1)
-
-
-
-
ring silicates
-
milarite group
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osumilite (1)
-
-
-
sheet silicates
-
chlorite group
-
chlorite (1)
-
-
clay minerals
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smectite (2)
-
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corrensite (1)
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gillespite (1)
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illite (1)
-
mica group
-
biotite (1)
-
-
-
-
sulfates
-
gypsum (2)
-
polyhalite (1)
-
-
sulfides
-
pyrite (1)
-
-
-
Primary terms
-
absolute age (21)
-
Africa
-
East Africa
-
Ethiopia (1)
-
-
-
Asia
-
Far East
-
Indonesia
-
Sumatra (1)
-
-
Japan
-
Honshu
-
Iwate Japan
-
Kakkonda Field (1)
-
Onikobe Field (1)
-
-
-
-
Philippine Islands (2)
-
-
Middle East
-
Turkey (2)
-
-
-
Atlantic Ocean
-
North Atlantic
-
North Sea (1)
-
Reykjanes Ridge (1)
-
-
-
Australasia
-
New Zealand
-
Wairakei (1)
-
-
Papua New Guinea
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New Britain (1)
-
-
-
bacteria (1)
-
bibliography (2)
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biogeography (7)
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brines (4)
-
Canada
-
Eastern Canada
-
Quebec (1)
-
-
Western Canada
-
British Columbia
-
Vancouver Island (6)
-
-
Yukon Territory (1)
-
-
-
carbon
-
C-13/C-12 (2)
-
C-14 (3)
-
organic carbon (1)
-
-
catalogs (1)
-
Cenozoic
-
Quaternary
-
Holocene
-
upper Holocene (1)
-
-
Pleistocene
-
middle Pleistocene (1)
-
-
-
Tertiary
-
Neogene
-
Etchegoin Formation (1)
-
Miocene
-
middle Miocene (2)
-
upper Miocene (1)
-
-
Pliocene
-
middle Pliocene (1)
-
upper Pliocene (1)
-
-
upper Neogene (1)
-
-
Paleogene
-
Eocene
-
lower Eocene
-
Wasatchian (1)
-
-
upper Eocene
-
Poway Conglomerate (1)
-
-
-
Oligocene (3)
-
Paleocene
-
lower Paleocene
-
Danian (1)
-
-
upper Paleocene
-
Thanetian (1)
-
-
-
Santa Susana Formation (2)
-
-
-
upper Cenozoic
-
Pico Formation (1)
-
-
-
Central America
-
Costa Rica (1)
-
Guatemala (1)
-
Panama
-
Panama Canal Zone (1)
-
-
-
Chordata
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Vertebrata
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Tetrapoda
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Amphibia (1)
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Aves (1)
-
Mammalia
-
Theria
-
Eutheria
-
Cetacea (1)
-
Insectivora (1)
-
-
-
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs
-
Ornithischia
-
Ornithopoda
-
Hadrosauridae (2)
-
-
-
Saurischia
-
Theropoda (1)
-
-
-
-
-
-
-
-
-
clay mineralogy (1)
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climate change (1)
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continental drift (5)
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continental shelf (6)
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continental slope (1)
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crust (14)
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crystal chemistry (2)
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crystal structure (2)
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data processing (7)
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deformation (11)
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earthquakes (42)
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Europe
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Central Europe
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Germany
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Taunus (1)
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Lower Saxony Germany
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East Frisian Islands (1)
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Rhenish Schiefergebirge
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Taunus (1)
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Southern Europe
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Greece
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Greek Aegean Islands (1)
-
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Italy
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Baja California
Guerrero-Alisitos-Vizcaino superterrane of western Mexico and its ties to the Mexican continental margin (Gondwana and SW Laurentia)
ABSTRACT This chapter expands upon a model, first proposed in 1998 by Busby and others, in which Mesozoic oceanic-arc rocks of Baja California formed along the Mexican continental margin above a single east-dipping subduction zone, and were extensional in nature, due to rollback of an old, cold subducting slab (Panthalassa). It expands on that model by roughly tripling the area of the region representing this fringing extensional oceanic-arc system to include the western third of mainland Mexico. This chapter summarizes the geologic, paleomagnetic, and detrital zircon data that tie all of these oceanic-arc rocks to each other and to the Mexican margin, herein termed the Guerrero-Alisitos-Vizcaino superterrane. These data contradict a model that proposes the oceanic-arc rocks formed in unrelated archipelagos some 2000–4000 km west of Pangean North America. Following the termination of Permian–Triassic (280–240 Ma) subduction under continental Mexico, the paleo-Pacific Mexico margin was a passive margin dominated by a huge siliciclastic wedge (Potosí fan) composed of sediments eroded from Gondwanan basement and Permian continental-arc rocks. I propose that a second fan formed further north, termed herein the Antimonio-Barranca fan, composed of sediment eroded from southwest Laurentian sources. Zircons from these two fans were dispersed onto the ocean floor as turbidites, forming a unifying signature in the Guerrero-Alisitos-Vizcaino superterrane. The oldest rocks in the Guerrero-Alisitos-Vizcaino superterrane record subduction initiation in the oceanic realm, producing the 221 Ma Vizcaino ophiolite, which predated the onset of arc magmatism. This ophiolite contains Potosí fan zircons as xenocrysts in its chromitites, which I suggest were deposited on the seafloor before the trench formed and then were subducted eastward. This is consistent with the geophysical interpretation that the Cocos plate (the longest subducted plate on Earth) began subducting eastward under Mexico at 220 Ma. The Early Jurassic to mid-Cretaceous oceanic arc of western Mexico formed above this east-dipping slab, shifting positions with time, and was largely extensional, forming intra-arc basins and spreading centers, including a backarc basin along the continental margin (Arperos basin). Turbidites with ancient Mexican detrital zircons were deposited in many of these basins and recycled along normal fault scarps. By mid-Cretaceous time, the extensional oceanic arc began to evolve into a contractional continental arc, probably due to an increase in convergence rate that was triggered by a global plate reorganization. Contraction expanded eastward (inboard) throughout the Late Cretaceous, along with inboard migration of arc magmatism, suggesting slab shallowing with time.
The influence of glacial isostatic adjustment on continental shelf stratigraphic correlation
Experimental Approach on the Study of Ground‐Motion Amplification at the Cerro Prieto Volcano, Mexicali Valley, Baja California, Mexico
Two-dimensional determinant inversion of marine magnetotelluric data and a field example from the Gulf of California, Mexico
Paleoenvironments, taphonomy, and stable isotopic content of the terrestrial, fossil-vertebrate–bearing sequence of the El Disecado Member, El Gallo Formation, Upper Cretaceous, Baja California, México
Quantifying rates of “rifting while drifting” in the southern Gulf of California: The role of the southern Baja California microplate and its eastern boundary zone
A New Technique to Calculate Earthquake Stress Transfer and to Probe the Physics of Aftershocks
Architecture, process, and environmental diversity in a late Cretaceous slope channel system
A Crustal Velocity Model for the Peninsular Ranges of Baja California and Southwestern Laguna Salada, Mexico
Seismic Noise Levels in Northern Baja California, Mexico
ABSTRACT Forearc basins are first-order products of convergent-margin tectonics, and their sedimentary deposits offer unique perspectives on coeval evolution of adjacent arcs and subduction complexes. New detrital zircon U-Pb geochronologic data from 23 sandstones and 11 individual conglomerate clasts sampled from forearc basin strata of the Nacimiento block, an enigmatic stretch of the Cordilleran forearc exposed along the central California coast, place constraints on models for forearc deformation during evolution of the archetypical Cordilleran Mesozoic margin. Deposition and provenance of the Nacimiento forearc developed in three stages: (1) Late Jurassic–Valanginian deposition of lower Nacimiento forearc strata with zircon derived from the Jurassic–Early Cretaceous arc mixed with zircon recycled from Neoproterozoic–Paleozoic and Mesozoic sedimentary sources typical of the continental interior; (2) erosion or depositional hiatus from ca. 135 to 110 Ma; and (3) Albian–Santonian deposition of upper Nacimiento forearc strata with zircon derived primarily from the Late Cretaceous arc, accompanied by Middle Jurassic zircon during the late Albian–Cenomanian. These data are most consistent with sedimentary source terranes and a paleogeographic origin for the Nacimiento block south of the southern San Joaquin Basin in southern California or northernmost Mexico. This interpreted paleogeographic and depositional history of the Nacimiento block has several implications for the tectonic evolution of the southern California Mesozoic margin. First, the Nacimiento forearc depositional history places new timing constraints on the Early Cretaceous unconformity found in forearc basin strata from the San Joaquin Valley to Baja California. This timing constraint suggests a model in which forearc basin accommodation space was controlled by accretionary growth of the adjacent subduction complex, and where tectonic events in the forearc and the arc were linked through sediment supply rather than through orogenic-scale wedge dynamics. Second, a paleogeographic origin for the Nacimiento forearc south of the southern San Joaquin Valley places new constraints on end-member models for the kinematic evolution of the Sur-Nacimiento fault. Although this new paleogeographic reconstruction cannot distinguish between sinistral strike-slip and thrust models, it requires revision of existing sinistral-slip models for the Sur-Nacimiento fault, and it highlights unresolved problems with the thrust model.