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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Asia
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Far East
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Indonesia (1)
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Atlantic Ocean
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North Atlantic
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Barbados Ridge (1)
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Blake Plateau (1)
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Blake-Bahama Basin (1)
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Blake-Bahama Outer Ridge (2)
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Caribbean Sea (1)
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Gulf of Mexico (2)
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Northwest Atlantic (4)
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Caribbean region (1)
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Central America
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Costa Rica (1)
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Mexico (2)
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North America
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Gulf Coastal Plain (1)
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Pacific Ocean
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East Pacific
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Middle America Trench (1)
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North Pacific
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Middle America Trench (1)
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Northwest Pacific
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Nankai Trough (2)
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Shikoku Basin (1)
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West Pacific
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metamorphic rocks
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schists
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blueschist (1)
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minerals
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hydrates (1)
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Primary terms
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Asia
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Far East
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Indonesia (1)
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Atlantic Ocean
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North Atlantic
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Barbados Ridge (1)
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Blake Plateau (1)
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Blake-Bahama Basin (1)
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Blake-Bahama Outer Ridge (2)
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Caribbean Sea (1)
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Gulf of Mexico (2)
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Northwest Atlantic (4)
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Caribbean region (1)
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Cenozoic
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Quaternary
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Pleistocene (1)
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Tertiary
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Neogene (1)
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Central America
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Costa Rica (1)
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continental slope (2)
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Deep Sea Drilling Project
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IPOD
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Leg 66 (2)
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Leg 76
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DSDP Site 533 (1)
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DSDP Site 534 (1)
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Leg 10 (1)
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earthquakes (2)
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geochemistry (1)
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heat flow (1)
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Invertebrata
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Protista
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marine geology (2)
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Mesozoic
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Cretaceous
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Upper Cretaceous (1)
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Jurassic
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Middle Jurassic
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Callovian (1)
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metamorphic rocks
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schists
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blueschist (1)
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Mexico (2)
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North America
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Gulf Coastal Plain (1)
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ocean basins (1)
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Ocean Drilling Program
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Leg 110
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ODP Site 671 (1)
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Leg 196 (1)
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ocean floors (6)
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oceanography (4)
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Pacific Ocean
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East Pacific
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Northeast Pacific
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Middle America Trench (1)
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North Pacific
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Northeast Pacific
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Middle America Trench (1)
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Northwest Pacific
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Nankai Trough (2)
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Shikoku Basin (1)
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West Pacific
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Northwest Pacific
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Nankai Trough (2)
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Shikoku Basin (1)
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paleogeography (1)
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palynomorphs (1)
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petroleum
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natural gas (1)
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Plantae
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algae
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nannofossils (1)
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plate tectonics (4)
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reefs (1)
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sea-floor spreading (1)
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sedimentary rocks (1)
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sedimentation (5)
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sediments
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carbonate sediments (1)
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marine sediments (4)
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South America
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Colombia (1)
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stratigraphy (2)
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tectonics (1)
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tectonophysics (1)
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thallophytes (1)
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United States
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Eastern U.S. (1)
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sedimentary rocks
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sedimentary rocks (1)
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sediments
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sediments
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carbonate sediments (1)
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marine sediments (4)
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Seamount subduction erosion in the Nankai Trough and its potential impact on the seismogenic zone
Evolution of the Nankai Trough décollement from the trench into the seismogenic zone: Inferences from three-dimensional seismic reflection imaging
Seismically inferred dilatancy distribution, northern Barbados Ridge decollement: Implications for fluid migration and fault strength
Comment and Reply on “Comments on the growth of accretionary wedges”: REPLY
Costa Rica Continental Margin: Line CR-7
Abstract The seismic section across the Pacific margin of Central America off Costa Rica provides a structural cross section of the southern terminus of the Middle America trench. The section begins less than 10 km from the shoreline of the Nicoya Peninsula and extends for 70 km across the trench slope and trench, and into the ocean basin. Regionally, the trench shallows toward the southeast because of a large sea-floor rise, the Cocos Ridge, at the southern boundary of the Middle America trench. The Cocos and Caribbean plates are converging at about 9 cm/yr nearly normal to the margin (McNally and Minster, 1981), with earthquake activity defining a subduction zone dipping to the northeast (Burbach et al., 1984). Old oceanic crust is exposed on the Nicoya Peninsula in the form of Late Jurassic and Cretaceous volcanic and sedimentary rocks. The structural relationships within these rocks have been reported by a number of different investigators, but their exact origin remains unresolved (Dengo, 1962; Schmidt-Effing, 1979; Lundberg, 1982). The presently subducting ocean floor is of early Miocene age (Hey, 1977).