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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Atlantic Ocean
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North Atlantic
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Baltimore Canyon Trough (1)
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Georges Bank (1)
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Scotian Shelf (1)
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Chesapeake Bay impact structure (1)
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Europe
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Southern Europe
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Iberian Peninsula
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Portugal (2)
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-
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Western Europe
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United Kingdom
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Great Britain
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England
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Dorset England (1)
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Isle of Wight England (1)
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James River (1)
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North America
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Gulf Coastal Plain (1)
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United States
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Atlantic Coastal Plain
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Central Atlantic Coastal Plain (2)
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Chesapeake Bay (2)
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Delaware
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New Castle County Delaware (1)
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Maryland
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Cecil County Maryland (2)
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Prince Georges County Maryland (2)
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Wicomico County Maryland (1)
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Worcester County Maryland (1)
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Massachusetts (1)
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New Jersey
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Burlington County New Jersey (1)
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Salem County New Jersey (1)
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North Carolina
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Dare County North Carolina
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Cape Hatteras (1)
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Pennsylvania
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Philadelphia County Pennsylvania
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Philadelphia Pennsylvania (1)
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Potomac River (1)
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Salisbury Embayment (2)
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Texas
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Hood County Texas (1)
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Somervell County Texas (1)
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Virginia
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Accomack County Virginia (1)
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Northumberland County Virginia (1)
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commodities
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petroleum (2)
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elements, isotopes
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isotope ratios (1)
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isotopes
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stable isotopes
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O-18/O-16 (1)
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metals
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alkaline earth metals
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barium (1)
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strontium (1)
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oxygen
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O-18/O-16 (1)
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fossils
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Chordata
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Vertebrata
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Tetrapoda
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Mammalia
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Multituberculata (1)
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Reptilia
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Diapsida
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Archosauria
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dinosaurs
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Ornithischia
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Ankylosauria (1)
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Invertebrata
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Mollusca (1)
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microfossils (5)
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palynomorphs
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megaspores (2)
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miospores
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pollen (3)
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Plantae
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algae
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nannofossils (2)
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Pteridophyta
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Lycopsida (1)
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Spermatophyta
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Angiospermae
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Dicotyledoneae
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Magnoliidae (1)
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Monocotyledoneae (1)
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Gymnospermae
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Coniferales (1)
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geologic age
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Cenozoic
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Quaternary
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Pleistocene (2)
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Tertiary
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Neogene
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Miocene
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Calvert Formation (1)
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middle Miocene
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Choptank Formation (1)
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Saint Marys Formation (1)
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upper Miocene
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Eastover Formation (1)
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Pliocene
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Yorktown Formation (1)
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Paleogene
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Eocene
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lower Eocene
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Aquia Formation (2)
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Nanjemoy Formation (1)
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Oligocene (1)
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Paleocene-Eocene Thermal Maximum (1)
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Mesozoic
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Cretaceous
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Comanchean
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Glen Rose Formation (1)
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Logan Canyon Formation (1)
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Lower Cretaceous
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Albian (5)
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Aptian (2)
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Barremian (3)
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Glen Rose Formation (1)
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Hauterivian (1)
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Missisauga Formation (1)
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Wealden (1)
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Lower Greensand (1)
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Middle Cretaceous (2)
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Potomac Group (20)
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Upper Cretaceous
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Cenomanian
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lower Cenomanian (1)
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Raritan Formation (1)
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Jurassic
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Upper Jurassic
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Morrison Formation (1)
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Triassic (1)
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minerals
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carbonates
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sphaerosiderite (1)
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Primary terms
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Atlantic Ocean
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North Atlantic
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Baltimore Canyon Trough (1)
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Georges Bank (1)
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Scotian Shelf (1)
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biogeography (1)
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Cenozoic
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Quaternary
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Pleistocene (2)
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Tertiary
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Neogene
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Miocene
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Calvert Formation (1)
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middle Miocene
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Choptank Formation (1)
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Saint Marys Formation (1)
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upper Miocene
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Eastover Formation (1)
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Pliocene
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Yorktown Formation (1)
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Paleogene
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Eocene
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lower Eocene
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Aquia Formation (2)
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Nanjemoy Formation (1)
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Oligocene (1)
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Paleocene-Eocene Thermal Maximum (1)
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Chordata
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Vertebrata
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Tetrapoda
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Mammalia
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Multituberculata (1)
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Reptilia
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Diapsida
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Archosauria
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dinosaurs
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Ornithischia
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Ankylosauria (1)
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continental shelf (1)
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Europe
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Southern Europe
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Iberian Peninsula
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Portugal (2)
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-
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Western Europe
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United Kingdom
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Great Britain
-
England
-
Dorset England (1)
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Isle of Wight England (1)
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-
-
-
-
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faults (1)
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geochemistry (1)
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geophysical methods (2)
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ground water (1)
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hydrology (1)
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Invertebrata
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Mollusca (1)
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isotopes
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stable isotopes
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O-18/O-16 (1)
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-
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maps (1)
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Mesozoic
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Cretaceous
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Comanchean
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Glen Rose Formation (1)
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Logan Canyon Formation (1)
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Lower Cretaceous
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Albian (5)
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Aptian (2)
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Barremian (3)
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Glen Rose Formation (1)
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Hauterivian (1)
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Missisauga Formation (1)
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Wealden (1)
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Lower Greensand (1)
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Middle Cretaceous (2)
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Potomac Group (20)
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Upper Cretaceous
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Cenomanian
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lower Cenomanian (1)
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Raritan Formation (1)
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-
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Jurassic
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Upper Jurassic
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Morrison Formation (1)
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-
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Triassic (1)
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metals
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alkaline earth metals
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barium (1)
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strontium (1)
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-
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North America
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Gulf Coastal Plain (1)
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-
Ocean Drilling Program
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Leg 174AX
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Fort Mott Site (1)
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Medford Site (1)
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oxygen
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O-18/O-16 (1)
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paleobotany (1)
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paleoclimatology (4)
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paleoecology (4)
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paleogeography (3)
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paleontology (1)
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palynomorphs
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megaspores (2)
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miospores
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pollen (3)
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-
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petroleum (2)
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Plantae
-
algae
-
nannofossils (2)
-
-
Pteridophyta
-
Lycopsida (1)
-
-
Spermatophyta
-
Angiospermae
-
Dicotyledoneae
-
Magnoliidae (1)
-
-
Monocotyledoneae (1)
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-
Gymnospermae
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Coniferales (1)
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pollution (1)
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sea-level changes (2)
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sedimentary rocks
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clastic rocks
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sandstone (2)
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sedimentation (1)
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sediments
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clastic sediments (1)
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stratigraphy (2)
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tectonics (1)
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United States
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Atlantic Coastal Plain
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Central Atlantic Coastal Plain (2)
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Chesapeake Bay (2)
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Delaware
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New Castle County Delaware (1)
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Maryland
-
Cecil County Maryland (2)
-
Prince Georges County Maryland (2)
-
Wicomico County Maryland (1)
-
Worcester County Maryland (1)
-
-
Massachusetts (1)
-
New Jersey
-
Burlington County New Jersey (1)
-
Salem County New Jersey (1)
-
-
North Carolina
-
Dare County North Carolina
-
Cape Hatteras (1)
-
-
-
Pennsylvania
-
Philadelphia County Pennsylvania
-
Philadelphia Pennsylvania (1)
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-
-
Potomac River (1)
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Salisbury Embayment (2)
-
Texas
-
Hood County Texas (1)
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Somervell County Texas (1)
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-
Virginia
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Accomack County Virginia (1)
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Northumberland County Virginia (1)
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-
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waste disposal (1)
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sedimentary rocks
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sedimentary rocks
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clastic rocks
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sandstone (2)
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sediments
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sediments
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clastic sediments (1)
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-
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soils
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paleosols (1)
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Potomac Group
Onshore–offshore correlations of Cretaceous fluvial-deltaic sequences, southern Baltimore Canyon trough
Mid-Cretaceous Paleopedology and Landscape Reconstruction of the Mid-Atlantic U.S. Coastal Plain
Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation of Texas and their significance for correlation of the Potomac Group
LOWER TO MID-CRETACEOUS SEQUENCE STRATIGRAPHY AND CHARACTERIZATION OF CO 2 STORAGE POTENTIAL IN THE MID-ATLANTIC U.S. COASTAL PLAIN
Mid-Cretaceous megaspore floras from Maryland, USA
Abstract The Salisbury embayment is a broad tectonic downwarp that is filled by generally seaward-thickening, wedge-shaped deposits of the central Atlantic Coastal Plain. Our two-day field trip will take us to the western side of this embayment from the Fall Zone in Washington, D.C., to some of the bluffs along Aquia Creek and the Potomac River in Virginia, and then to the Calvert Cliffs on the western shore of the Chesapeake Bay. We will see fluvial-deltaic Cretaceous deposits of the Potomac Formation. We will then focus on Cenozoic marine deposits. Transgressive and highstand deposits are stacked upon each other with unconformities separating them; rarely are regressive or lowstand deposits preserved. The Paleocene and Eocene shallow shelf deposits consist of glauconitic, silty sands that contain varying amounts of marine shells. The Miocene shallow shelf deposits consist of diatomaceous silts and silty and shelly sands. The lithology, thickness, dip, preservation, and distribution of the succession of coastal plain sediments that were deposited in our field-trip area are, to a great extent, structurally controlled. Surficial and subsurface mapping using numerous continuous cores, auger holes, water-well data, and seismic surveys has documented some folds and numerous high-angle reverse and normal faults that offset Cretaceous and Cenozoic deposits. Many of these structures are rooted in early Mesozoic and/or Paleozoic NE-trending regional tectonic fault systems that underlie the Atlantic Coastal Plain. On Day 1, we will focus on two fault systems (stops 1-2; Stafford fault system and the Skinkers Neck-Brandywine fault system and their constituent fault zones and faults). We will then see (stops 3-5) a few of the remaining exposures of largely unlithified marine Paleocene and Eocene strata along the Virginia side of the Potomac River including the Paleocene-Eocene Thermal Maximum boundary clay. These exposures are capped by fluvial-estuarine Pleistocene terrace deposits. On Day 2, we will see (stops 6-9) the classic Miocene section along the ~25 miles (~40 km) of Calvert Cliffs in Maryland, including a possible fault and structural warping. Cores from nearby test holes will also be shown to supplement outcrops.
New multituberculate mammal from the Early Cretaceous of eastern North America
The First Hatchling Dinosaur Reported from the Eastern United States: Propanoplosaurus marylandicus (Dinosauria: Ankylosauria) from the Early Cretaceous of Maryland, U.S.A.
Two cores at the outer margin of the Chesapeake Bay impact structure show significant structural and depositional variations that illuminate its history. Detailed stratigraphy of the Watkins School core reveals that this site is outside the disruption boundary of the crater with respect to its lower part (nonmarine Cretaceous Potomac Formation), but just inside the boundary with respect to its upper part (Exmore Formation and a succession of upper Eocene to Pleistocene postimpact deposits). The site of the U.S. Geological Survey–National Aeronautics and Space Administration Langley core, 6.4 km to the east, lies wholly within the annular trough of the crater. The Potomac Formation in the Watkins School core is not noticeably impact disrupted. The lower part of crater unit A in the Langley core represents stratigraphically lower, but similarly undeformed material. The Exmore Formation is only 7.8 m thick in the Watkins School core, but it is over 200 m thick in the Langley core, where it contains blocks up to 24 m in intersected diameter. The upper part of the Exmore Formation in the two cores is a polymict diamicton with a stratified zone at the top. The postimpact sedimentary units in the two cores have similar late Eocene and late Miocene depositional histories and contrasting Oligocene, early Miocene, and middle Miocene histories. A paleochannel of the James River removed Pliocene deposits at the Watkins School site, to be filled later with thick Pleistocene deposits. At the Langley site, a thick Pliocene and thinner Pleistocene record is preserved.
Abstract A thick sequence (45+ m) of Cretaceous age Potomac Group sediments unconformably overlain by Quaternary Trenton Gravel and Alluvial silts and clays was investigated as part of the planning for and construction of a new 1525-m-long (5000-ft) runway (Runway 8–26) at the Philadelphia International Airport. This runway was constructed over a deleted but deed-restricted U.S. Environmental Protection Agency Superfund site, the Enterprise Avenue Landfill. This sedimentary sequence contains three discrete aquifer units, several of which are included within the recharge zone of the federally designated New Jersey Coastal Plain Sole Source Aquifer. This paper presents an overview of the geology of southwestern Philadelphia in the vicinity of Philadelphia International Airport and the former Enterprise Avenue Landfill area. The field trip through this area will include descriptions of the geology and history of the area, the Runway 8–26 project at the airport, the on-site groundwater mitigation system at the Enterprise Avenue Landfill area, and future enhancements to the airport infrastructure currently under consideration.