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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
Madagascar (1)
-
North Africa
-
Algeria (3)
-
-
-
Antarctica
-
Antarctic Peninsula (1)
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East Antarctica (1)
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Ellsworth Land (1)
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James Ross Island (3)
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Arctic region
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Asia
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Krasnoyarsk Russian Federation
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Siberia (1)
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Yakutia Russian Federation
-
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Olenek River (1)
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Atlantic Ocean
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Bay of Biscay (3)
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South Atlantic
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Brazil Basin (1)
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Walvis Ridge (1)
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Australasia
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Commonwealth of Independent States
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Russian Federation
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Olenek River (1)
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Europe
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Western Interior
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South America
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Andes (1)
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C-13/C-12 (7)
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isotope ratios (6)
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isotopes
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C-13/C-12 (7)
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O-18/O-16 (7)
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Sr-87/Sr-86 (1)
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metals
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alkaline earth metals
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strontium
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Sr-87/Sr-86 (1)
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rare earths
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cerium (1)
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oxygen
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O-18/O-16 (7)
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fossils
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Chordata
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Vertebrata
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Tetrapoda
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Reptilia
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Diapsida
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Archosauria
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Lepidosauria
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Squamata
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Lacertilia
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Mosasauridae (1)
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ichnofossils
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Chondrites ichnofossils (1)
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Ophiomorpha (1)
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Thalassinoides (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Ostracoda (1)
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-
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Brachiopoda (1)
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Mollusca
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Bivalvia
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Heterodonta
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Ostreoidea (1)
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Pterioida
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Pteriina
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Inocerami
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Inoceramus (23)
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Cephalopoda
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Ammonoidea
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Ammonites (6)
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Desmoceratida (1)
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Coleoidea
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Gastropoda (3)
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Porifera (1)
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Protista
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Foraminifera
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Rotaliina
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Cassidulinacea
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Cibicidoides (1)
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Globigerinacea
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Orbitoidacea
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Cibicides (1)
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Rotaliacea
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Elphidium (1)
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Radiolaria (1)
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microfossils (9)
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Plantae
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Spermatophyta
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tracks (1)
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geochronology methods
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U/Pb (1)
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geologic age
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Cenozoic
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Quaternary
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Tertiary
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lower Tertiary (1)
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Neogene (1)
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lower Paleocene
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K-T boundary (4)
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Mesozoic
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Cretaceous
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Colorado Group (1)
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Comanchean
-
Comanche Peak Limestone (1)
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-
Dakota Formation (1)
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Graneros Shale (1)
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Lower Cretaceous
-
Agrio Formation (1)
-
Albian
-
upper Albian (4)
-
-
Comanche Peak Limestone (1)
-
Gault Clay (1)
-
-
Middle Cretaceous (1)
-
Toolebuc Formation (1)
-
Upper Cretaceous
-
Bearpaw Formation (1)
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Bridge Creek Limestone Member (1)
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Campanian
-
upper Campanian (1)
-
-
Cardium Formation (2)
-
Carlile Shale (2)
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Cenomanian
-
Dunvegan Formation (1)
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upper Cenomanian (1)
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-
Codell Sandstone Member (1)
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Coniacian (3)
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Fort Hays Limestone Member (2)
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Greenhorn Limestone (3)
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Holz Shale (1)
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K-T boundary (4)
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Ladd Formation (1)
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lower Maestrichtian (1)
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Niobrara Formation (3)
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Pierre Shale (2)
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Santonian (4)
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Senonian (11)
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lower Turonian (1)
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upper Turonian (1)
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Viking Formation (1)
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Franciscan Complex (1)
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Longarm Formation (1)
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Paleozoic
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igneous rocks
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sheet silicates
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chlorite group
-
chlorite (1)
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-
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Primary terms
-
absolute age (2)
-
Africa
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Madagascar (1)
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North Africa
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Algeria (3)
-
-
-
Antarctica
-
Antarctic Peninsula (1)
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East Antarctica (1)
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Ellsworth Land (1)
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James Ross Island (3)
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-
Arctic region
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Russian Arctic (1)
-
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Asia
-
Krasnoyarsk Russian Federation
-
Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (1)
-
-
-
Siberia (1)
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Yakutia Russian Federation
-
Lena Delta (1)
-
Olenek River (1)
-
-
-
Atlantic Ocean
-
North Atlantic
-
Bay of Biscay (3)
-
-
South Atlantic
-
Brazil Basin (1)
-
Walvis Ridge (1)
-
-
-
Australasia
-
Australia
-
Eromanga Basin (1)
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Queensland Australia (1)
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-
New Zealand (1)
-
-
biogeography (4)
-
Canada
-
Western Canada
-
Alberta
-
Athabasca River (1)
-
Peace River Arch (1)
-
-
British Columbia
-
Queen Charlotte Islands (1)
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Vancouver Island (1)
-
-
-
-
carbon
-
C-13 (1)
-
C-13/C-12 (7)
-
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
-
Tertiary
-
lower Tertiary (1)
-
Neogene (1)
-
Paleogene
-
Eocene (1)
-
Paleocene
-
lower Paleocene
-
Danian (1)
-
K-T boundary (4)
-
-
-
-
-
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs (1)
-
-
Lepidosauria
-
Squamata
-
Lacertilia
-
Mosasauridae (1)
-
-
-
-
-
-
-
-
-
continental shelf (1)
-
crust (1)
-
crystal growth (1)
-
Deep Sea Drilling Project
-
IPOD
-
Leg 75
-
DSDP Site 530 (1)
-
-
-
Leg 12
-
DSDP Site 111 (1)
-
-
Leg 3
-
DSDP Site 21 (1)
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-
deformation (2)
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diagenesis (3)
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ecology (1)
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Europe
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-
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Western Europe
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France
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Charentes (1)
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United Kingdom
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Chondrites ichnofossils (1)
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igneous rocks
-
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-
-
Indian Ocean Islands
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Madagascar (1)
-
-
Invertebrata
-
Arthropoda
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Mandibulata
-
Crustacea
-
Malacostraca (1)
-
Ostracoda (1)
-
-
-
-
Brachiopoda (1)
-
Mollusca
-
Bivalvia
-
Heterodonta
-
Veneroida
-
Vesicomyidae
-
Calyptogena (1)
-
-
-
-
Ostreoidea (1)
-
Pterioida
-
Pteriina
-
Inocerami
-
Inoceramidae
-
Inoceramus (23)
-
-
-
-
-
-
Cephalopoda
-
Ammonoidea
-
Ammonites (6)
-
Baculites (4)
-
Desmoceratida (1)
-
-
Coleoidea
-
Belemnoidea
-
Belemnitidae (1)
-
-
-
-
Gastropoda (3)
-
-
Porifera (1)
-
Protista
-
Foraminifera
-
Rotaliina
-
Cassidulinacea
-
Anomalinidae
-
Cibicidoides (1)
-
-
-
Globigerinacea
-
Globigerinidae
-
Globigerina (1)
-
-
-
Orbitoidacea
-
Cibicides (1)
-
-
Rotaliacea
-
Elphidium (1)
-
-
-
-
Radiolaria (1)
-
Tintinnidae
-
Calpionellidae (1)
-
-
-
-
isotopes
-
stable isotopes
-
C-13 (1)
-
C-13/C-12 (7)
-
O-18/O-16 (7)
-
Sr-87/Sr-86 (1)
-
-
-
mantle (1)
-
Mesozoic
-
Cretaceous
-
Colorado Group (1)
-
Comanchean
-
Comanche Peak Limestone (1)
-
-
Dakota Formation (1)
-
Graneros Shale (1)
-
Lower Cretaceous
-
Agrio Formation (1)
-
Albian
-
upper Albian (4)
-
-
Comanche Peak Limestone (1)
-
Gault Clay (1)
-
-
Middle Cretaceous (1)
-
Toolebuc Formation (1)
-
Upper Cretaceous
-
Bearpaw Formation (1)
-
Bridge Creek Limestone Member (1)
-
Campanian
-
upper Campanian (1)
-
-
Cardium Formation (2)
-
Carlile Shale (2)
-
Cenomanian
-
Dunvegan Formation (1)
-
upper Cenomanian (1)
-
-
Codell Sandstone Member (1)
-
Coniacian (3)
-
Fort Hays Limestone Member (2)
-
Greenhorn Limestone (3)
-
Holz Shale (1)
-
K-T boundary (4)
-
Ladd Formation (1)
-
Maestrichtian
-
lower Maestrichtian (1)
-
-
Niobrara Formation (3)
-
Pierre Shale (2)
-
Santonian (4)
-
Senonian (11)
-
Turonian
-
lower Turonian (1)
-
upper Turonian (1)
-
-
-
Viking Formation (1)
-
-
Franciscan Complex (1)
-
Jurassic
-
Lower Jurassic (2)
-
Middle Jurassic (2)
-
Upper Jurassic (1)
-
-
Longarm Formation (1)
-
Triassic
-
Lower Triassic (1)
-
Upper Triassic (1)
-
-
-
metals
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
rare earths
-
cerium (1)
-
-
-
metasomatism (1)
-
Mexico
-
Chiapas Mexico (1)
-
Nuevo Leon Mexico (1)
-
-
North America
-
Rocky Mountain Trench (1)
-
Sweetgrass Arch (1)
-
Western Canada Sedimentary Basin (1)
-
Western Interior
-
Western Interior Seaway (4)
-
-
-
oxygen
-
O-18/O-16 (7)
-
-
paleoclimatology (2)
-
paleoecology (9)
-
paleogeography (5)
-
paleomagnetism (1)
-
paleontology (9)
-
Paleozoic
-
Permian
-
Upper Permian (1)
-
-
-
petroleum
-
natural gas (1)
-
-
Plantae
-
algae
-
nannofossils (1)
-
-
Spermatophyta
-
Angiospermae (1)
-
-
-
plate tectonics (3)
-
sea water (1)
-
sea-level changes (7)
-
sedimentary petrology (1)
-
sedimentary rocks
-
carbonate rocks
-
limestone (3)
-
-
chemically precipitated rocks
-
phosphate rocks (1)
-
-
clastic rocks
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arenite
-
quartz arenite (1)
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-
claystone (1)
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mudstone (2)
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sandstone (3)
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shale (2)
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siltstone (2)
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-
coal (1)
-
-
sedimentary structures
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biogenic structures
-
bioturbation (2)
-
-
planar bedding structures
-
cross-bedding (1)
-
cyclothems (1)
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laminations (1)
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rhythmic bedding (1)
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rhythmite (1)
-
sand bodies (1)
-
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secondary structures
-
concretions (1)
-
-
-
sedimentation (3)
-
sediments
-
marine sediments (1)
-
-
South America
-
Andes (1)
-
Argentina
-
Neuquen Argentina (2)
-
Neuquen Basin (1)
-
-
Tierra del Fuego (1)
-
-
Southern Ocean
-
Weddell Sea (1)
-
-
stratigraphy (6)
-
structural analysis (1)
-
tectonics (3)
-
United States
-
Alaska
-
Alaska Peninsula (1)
-
-
Arizona (1)
-
California
-
Santa Ana Mountains (1)
-
Southern California (1)
-
Yolla Bolly Terrane (1)
-
-
Colorado
-
Boulder County Colorado (1)
-
Pueblo County Colorado
-
Pueblo Colorado (2)
-
-
-
Iowa (1)
-
Kansas
-
Ellis County Kansas (1)
-
Osborne County Kansas (1)
-
-
Missouri River valley (1)
-
Montana (4)
-
New Mexico (1)
-
Oklahoma (1)
-
South Dakota
-
Buffalo County South Dakota (1)
-
-
Southwestern U.S. (1)
-
Texas
-
Hood County Texas (1)
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Hunt County Texas (1)
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Parker County Texas (1)
-
Tarrant County Texas
-
Fort Worth Texas (3)
-
-
-
Utah (1)
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Washington
-
Clallam County Washington (1)
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Jefferson County Washington (1)
-
-
Western U.S. (1)
-
Wyoming
-
Crook County Wyoming (1)
-
Weston County Wyoming (1)
-
-
-
well-logging (1)
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-
rock formations
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Nanaimo Group (1)
-
-
sedimentary rocks
-
sedimentary rocks
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carbonate rocks
-
limestone (3)
-
-
chemically precipitated rocks
-
phosphate rocks (1)
-
-
clastic rocks
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arenite
-
quartz arenite (1)
-
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claystone (1)
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mudstone (2)
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sandstone (3)
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shale (2)
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siltstone (2)
-
-
coal (1)
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shell beds (1)
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turbidite (1)
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volcaniclastics (1)
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sedimentary structures
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Inocerami
A review of the Earth history record in the Cretaceous, Paleogene, and Neogene pelagic carbonates of the Umbria-Marche Apennines (Italy): Twenty-five years of the Geological Observatory of Coldigioco
ABSTRACT The Cretaceous and Paleogene pelagic limestone and marl formations of the Umbria-Marche Apennines of north-central Italy have proven to be exceptional recorders of the history of Earth and of life on Earth, and they have been the subject of numerous geological and paleontological studies over the last several decades. Founded a quarter century ago, in 1992, the Geological Observatory of Coldigioco is a research and teaching center focused on these exceptional rocks. This chapter is a historical introduction that briefly reviews the highlights of the lithologic, biostratigraphic, sedimentologic, magnetostratigraphic, impact-stratigraphic, geochemical, geochronological, time-scale, and cyclostratigraphical research done on the Umbria-Marche stratigraphic sequence, much of it facilitated by the Geological Observatory of Coldigioco. This review covers work up to the Coldigioco 25th anniversary Penrose conference in September 2017; it does not treat work presented at that conference or done since then. A remarkable irony is that a century ago, the Umbria-Marche Cretaceous–Paleogene sequence was so difficult to date that early work contained an error of ~35 m.y., but now there is a reasonable hope that this entire section may eventually be dated to an accuracy and precision of ~10,000 yr. This review begins with an homage to the little medieval city of Gubbio, its wild Festa dei Ceri, and its Bottaccione Gorge, where much of the research described here has been done. The review ends with three points of perspective. The first is the notion that sometimes geology can be done by looking up at the sky, and astronomy can be done by looking down at Earth, with much of the Coldigioco-based research being of this latter kind. The second is the observation that geology and paleontology are contributing far more new information to Big History—to our integrated knowledge of the past—than any other historical field in the humanities or sciences. The third is that three of the major scientific revolutions of geology in the twentieth century have direct connections to the Umbria-Marche stratigraphic sequence—the turbidite revolution, the development of plate tectonics, and the downfall of strict uniformitarianism.
Anatomy of a late Cenomanian transgressive shelf system: The influence of high-frequency eustasy and crustal flexure on stratigraphy and paleogeography, basal Kaskapau Formation, Western Canada Foreland Basin
ABSTRACT The Franciscan subduction complex formed over a protracted, ~150 m.y. period, during Late Jurassic to late Cenozoic subduction of oceanic lithosphere beneath the western margin of the North American continent. Growth of the complex occurred chiefly by progressive accretion, in which voluminous sediment was eroded from the magmatic arc and continent, deposited in the trench region, and then progressively subducted and accreted soon after deposition. The Yolla Bolly terrane, a major Franciscan subunit, has stood out as a possible exception to a progressive-accretion model. Yolla Bolly clastic rocks are almost barren of fossils, but there are ~13 localities with Late Jurassic and Early Cretaceous Buchia specimens, ~3 with mid-Cretaceous ammonites or Inoceramus , plus several with mid-Cretaceous youngest detrital-zircon populations. These ages had suggested that sediments may not have been deposited into an active trench, but instead were deposited into a relatively stable Yolla Bolly basin, which was both long-lived (ca. 150 Ma through ca. 95 Ma) and far-traveled (exotic). This basin was then accreted and metamorphosed at perhaps 92 Ma. It is surprising, however, that such a basin could have survived for ~50 m.y. along a subduction margin before being accreted. We determined detrital-zircon U-Pb ages from 31 new sandstone samples, including from key Buchia sites, and they indicate that Yolla Bolly clastic deposition actually occurred almost entirely between ca. 115 and 98 Ma. All of the Buchia specimens in the main parts of the Yolla Bolly terrane have been redeposited and the arc- and continent-sourced clastic rocks that comprise almost all of the terrane are much younger than once thought. This makes evolution of the Yolla Bolly terrane compatible with a progressive-accretion model, in which its constituent packets of clastic rocks were deposited in a native trench setting and then rapidly subducted, accreted, and metamorphosed.
The macrofauna of the Vale House Flints Member (Burnham Chalk Formation, Upper Turonian, Late Cretaceous) of Lincolnshire and a palaeoenvironmental reconstruction
An allostratigraphic and paleogeographic framework for the Joli Fou and Pelican formations and contiguous strata (Late Albian, Early Cretaceous) in central Alberta
Redox conditions of the Late Cretaceous Western Interior Seaway recorded by rare earth elements of Bearpaw molluscan fossils
Middle Cenomanian (Late Cretaceous) molluscs of the Shaftesbury Formation, Birch Mountains, northeastern Alberta, Canada
Parainoceramya n. gen. for Parainoceramus Cox, 1954 ( ex Voronetz, 1936) partim (Bivalvia, Jurassic)
Interregional correlation of disconformities in Upper Cretaceous strata, Western Interior Seaway: Biostratigraphic and sequence-stratigraphic evidence for eustatic change
Fluctuations of the oxygen minimum zone at the end of Oceanic Anoxic Event 2 reflected by benthic and planktic fossils
Taxonomy and Biostratigraphy of the Late Albian Actinoceramus sulcatus Lineage (Early Cretaceous Bivalvia, Inoceramidae)
Eustatic sea-level record for the Cenomanian (Late Cretaceous)—Extension to the Western Interior Basin, USA
PALEOECOLOGY OF GIANT INOCERAMIDAE ( PLATYCERAMUS ) ON A SANTONIAN (CRETACEOUS) SEAFLOOR IN COLORADO
One of the rarest of marine reptiles is the mosasaur genus Globidens , characterized by a massive, bulbous dentition. The rarity of the taxon, coupled with the bulbous dentition, resulted in various theories concerning life habits. Although a consensus indicates that the dentition was adapted for crushing resistant elements, hypotheses have varied concerning prey, ranging from turtles or bivalves to scavenging. Finally, a partial skeleton of Globidens has been recovered from the Big Bend area of the Missouri River in central South Dakota. The specimen was discovered in the upperDeGrey Formation (upperCampanian) of the Pierre Shale Group. During analysis, bivalve fragments were found packed within the rib-cage region of the skeleton. In the field, bivalve concentrations did not occur laterally or above or below the skeleton, indicating that they were the stomach contents of the mosasaur. Associated within the stomach area are a number of bivalve taxa, including oysters and small bivalves with lamellar shells, probably of the genus Anomia . The most common specimens within the stomach area are bivalves that exhibit a prismatic shell microstructure typical of inoceramids. Four inoceramid shell morphotypes were recovered, including a coarse-ribbed morphotype, a fine-ribbed morphotype, one with a thickened umbo, and a large, flat, thin-shelled morphotype. Because of their position in the mosasaur, their fragmented condition, limited taxonomic diversity, and absence from surrounding sediments, the bivalves are considered stomach contents. Some smaller, complete shells of Anomia escaped breakage, whereas larger inoceramids were invariably crushed. Chondrichthyan teeth were found associated but are interpreted to be the result of scavenging. This specimen of Globidens appears to have had a preference forthe large, flat, relatively thin-shelled inoceramids that contained a large, fleshy visceral mass.