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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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East Africa
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Eritrea (1)
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Ethiopia (1)
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Sudan (1)
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North Africa
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Egypt (1)
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Asia
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Arabian Peninsula
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Arabian Shield (1)
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Saudi Arabia (1)
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Far East
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China
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Gansu China (1)
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Xizang China
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Gangdese Belt (1)
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Lhasa Block (1)
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Himalayas (3)
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Indian Peninsula
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India
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Northeastern India
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Arunachal Pradesh India (1)
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-
-
Pakistan
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Punjab Pakistan
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Salt Range (2)
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Indus-Yarlung Zangbo suture zone (1)
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Middle East
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Iran
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Elburz (4)
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Iraq (1)
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Jordan (1)
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Zagros (2)
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Southeast Asia (1)
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Tibetan Plateau (1)
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Atlantic Ocean
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Equatorial Atlantic (1)
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North Atlantic
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Amazon Fan (1)
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Gulf of Mexico (4)
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Bathurst Island (1)
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Black Mountains (2)
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Buckskin Mountains (1)
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Canada
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Mackenzie Mountains (1)
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Nunavut
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Ellesmere Island (1)
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Sverdrup Basin (1)
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Queen Elizabeth Islands
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Sverdrup Basin (1)
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Western Canada
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Northwest Territories (1)
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Caribbean region
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West Indies
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Antilles
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Greater Antilles
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Cuba (1)
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Caspian Basin (1)
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Europe
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Alps (1)
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Pyrenees
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Southern Europe
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Syros (1)
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Iberian Peninsula
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Western Europe
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France
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Fairweather Fault (1)
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Front Range (2)
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Glass Mountains (1)
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Gulf of Mexico Basin (1)
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Indian Ocean
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Red Sea
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Red Sea Rift (1)
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International Ocean Discovery Program (1)
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Llanos (3)
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Marathon Basin (2)
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Mediterranean region
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Aegean Islands
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Greek Aegean Islands
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Cyclades
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Syros (1)
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Mediterranean Sea
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Melville Island (1)
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Mexico
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Baja California Mexico (1)
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Tabasco Mexico (1)
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Veracruz Mexico (1)
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North America
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Appalachians (3)
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Basin and Range Province
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Great Basin (1)
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Great Plains
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Southern Great Plains (1)
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Gulf Coastal Plain (1)
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North American Cordillera (3)
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Rocky Mountains
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U. S. Rocky Mountains (1)
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Western Interior (1)
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Pacific Ocean
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Gulf of California (1)
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North Pacific
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Northeast Pacific
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Gulf of California (1)
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Permian Basin (2)
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Rio Grande (1)
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South America
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Amazon River (1)
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Andes
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Eastern Cordillera (4)
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Colombia
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United States
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Alabama (1)
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Alaska
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Arizona
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Apache County Arizona (1)
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La Paz County Arizona (1)
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Petrified Forest National Park (1)
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Black Warrior Basin (1)
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California
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Inyo County California
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Inyo Mountains (1)
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Panamint Range (1)
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Kern County California (1)
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Mono County California (2)
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Riverside County California
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Big Maria Mountains (1)
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Salton Trough (2)
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San Bernardino County California (1)
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Southern California (3)
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Cheyenne Belt (1)
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Colorado
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Douglas County Colorado (1)
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Elbert County Colorado (1)
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Delaware Basin (1)
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Florida
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Nevada
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Esmeralda County Nevada (2)
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Mormon Mountains (1)
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White Pine County Nevada (1)
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Newark Basin (1)
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Sevier orogenic belt (2)
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Texas
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Burnet County Texas (1)
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Fort Worth Basin (1)
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Llano Uplift (1)
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Mason County Texas (1)
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West Texas (4)
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U. S. Rocky Mountains (1)
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Utah (2)
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Walker Lane (3)
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Western U.S. (1)
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Yavapai Province (1)
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Veracruz Basin (1)
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White Mountains (4)
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commodities
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elements, isotopes
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carbon
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chemical ratios (1)
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D/H (1)
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isotope ratios (3)
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radioactive isotopes
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Be-10 (1)
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stable isotopes
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D/H (1)
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Nd-144/Nd-143 (1)
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O-18/O-16 (2)
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Sr-87/Sr-86 (1)
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Lu/Hf (1)
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metals
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alkaline earth metals
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beryllium
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Be-10 (1)
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strontium
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Sr-87/Sr-86 (1)
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rare earths
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neodymium
-
Nd-144/Nd-143 (1)
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-
-
-
noble gases
-
helium (1)
-
-
oxygen
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O-18/O-16 (2)
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-
-
fossils
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Graptolithina
-
Graptoloidea (1)
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Hemichordata (1)
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Pterobranchia (1)
-
-
geochronology methods
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(U-Th)/He (26)
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Ar/Ar (11)
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exposure age (1)
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fission-track dating (6)
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He/He (2)
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Lu/Hf (1)
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Pb/Pb (1)
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Th/U (5)
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thermochronology (23)
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U/Pb (37)
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U/Th/Pb (2)
-
-
geologic age
-
Cenozoic
-
Quaternary
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Holocene
-
upper Holocene (1)
-
-
Pleistocene
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Blackwater Draw Formation (1)
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lower Pleistocene (1)
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upper Pleistocene (1)
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
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Miocene
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lower Miocene (1)
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middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene (5)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene
-
upper Oligocene (1)
-
-
Paleocene (1)
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Wilcox Group (1)
-
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upper Tertiary (1)
-
-
upper Cenozoic (1)
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-
Mesozoic
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Cretaceous
-
Lower Cretaceous (2)
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Middle Cretaceous (1)
-
Upper Cretaceous
-
Codell Sandstone Member (1)
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Coniacian (1)
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Fox Hills Formation (1)
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Laramie Formation (1)
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Maestrichtian (2)
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Pierre Shale (1)
-
-
-
Jurassic (3)
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lower Mesozoic (1)
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Newark Supergroup (1)
-
Triassic
-
Upper Triassic
-
Carnian (1)
-
Chinle Formation (1)
-
-
-
-
MIS 5 (1)
-
Paleozoic
-
Cambrian
-
Acadian (1)
-
-
Carboniferous
-
Diamond Peak Formation (1)
-
Pennsylvanian
-
Upper Pennsylvanian (1)
-
-
-
Devonian
-
Middle Devonian
-
Eifelian (1)
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Givetian (1)
-
-
-
Ordovician
-
Upper Ordovician
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Hirnantian (1)
-
-
-
Permian
-
Lower Permian
-
Leonardian (1)
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Wolfcampian (1)
-
-
Lyons Sandstone (1)
-
-
Silurian
-
Lower Silurian
-
Llandovery
-
Rhuddanian (1)
-
-
-
-
upper Paleozoic (1)
-
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Phanerozoic (3)
-
Precambrian
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Archean (2)
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upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic
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Cryogenian (1)
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Ediacaran (1)
-
-
Paleoproterozoic
-
Birimian (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
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granophyre (1)
-
plutonic rocks
-
granites (3)
-
granodiorites (1)
-
-
volcanic rocks
-
glasses
-
obsidian (1)
-
volcanic glass (1)
-
-
pyroclastics
-
ash-flow tuff (1)
-
ignimbrite (2)
-
pumice (1)
-
-
trachyandesites (1)
-
-
-
volcanic ash (2)
-
-
metamorphic rocks
-
metabentonite (1)
-
metamorphic rocks
-
gneisses (4)
-
granulites (2)
-
metaigneous rocks
-
serpentinite (1)
-
-
metasedimentary rocks (2)
-
metasomatic rocks
-
serpentinite (1)
-
-
mylonites
-
ultramylonite (1)
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-
schists
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blueschist (1)
-
-
-
turbidite (2)
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minerals
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carbonates (1)
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metabentonite (1)
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oxides
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magnetite (1)
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rutile (1)
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phosphates
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apatite (19)
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monazite (2)
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xenotime (1)
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-
silicates
-
framework silicates
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silica minerals
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quartz (1)
-
-
-
orthosilicates
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nesosilicates
-
titanite group
-
titanite (3)
-
-
zircon group
-
zircon (51)
-
-
-
-
sheet silicates
-
mica group
-
biotite (2)
-
muscovite (2)
-
-
-
-
-
Primary terms
-
absolute age (51)
-
Africa
-
East Africa
-
Eritrea (1)
-
Ethiopia (1)
-
Sudan (1)
-
-
North Africa
-
Egypt (1)
-
-
-
Asia
-
Arabian Peninsula
-
Arabian Shield (1)
-
Saudi Arabia (1)
-
Yemen (1)
-
-
Far East
-
China
-
Gansu China (1)
-
Xizang China
-
Gangdese Belt (1)
-
Lhasa Block (1)
-
-
-
-
Himalayas (3)
-
Indian Peninsula
-
India
-
Northeastern India
-
Arunachal Pradesh India (1)
-
-
-
Pakistan
-
Punjab Pakistan
-
Salt Range (2)
-
-
-
-
Indus-Yarlung Zangbo suture zone (1)
-
Middle East
-
Iran
-
Elburz (4)
-
-
Iraq (1)
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Jordan (1)
-
Zagros (2)
-
-
Southeast Asia (1)
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Tibetan Plateau (1)
-
-
Atlantic Ocean
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Equatorial Atlantic (1)
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North Atlantic
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Amazon Fan (1)
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Gulf of Mexico (4)
-
-
-
Canada
-
Mackenzie Mountains (1)
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Nunavut
-
Ellesmere Island (1)
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Sverdrup Basin (1)
-
-
Queen Elizabeth Islands
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Ellesmere Island (1)
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Sverdrup Basin (1)
-
-
Western Canada
-
Northwest Territories (1)
-
-
-
carbon
-
C-14 (1)
-
-
Caribbean region
-
West Indies
-
Antilles
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Greater Antilles
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Cuba (1)
-
-
-
-
-
Caspian Sea (1)
-
Cenozoic
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Quaternary
-
Holocene
-
upper Holocene (1)
-
-
Pleistocene
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Blackwater Draw Formation (1)
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lower Pleistocene (1)
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upper Pleistocene (1)
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
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lower Miocene (1)
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middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene (5)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene
-
upper Oligocene (1)
-
-
Paleocene (1)
-
Wilcox Group (1)
-
-
upper Tertiary (1)
-
-
upper Cenozoic (1)
-
-
climate change (3)
-
crust (10)
-
crystal growth (1)
-
dams (1)
-
Deep Sea Drilling Project
-
Leg 1
-
DSDP Site 3 (1)
-
-
Leg 10
-
DSDP Site 87 (1)
-
DSDP Site 89 (1)
-
DSDP Site 90 (1)
-
DSDP Site 91 (1)
-
-
-
deformation (6)
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Earth (1)
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Eurasia (1)
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Europe
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Alps (1)
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Pyrenees
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French Pyrenees (1)
-
-
Southern Europe
-
Greece
-
Greek Aegean Islands
-
Cyclades
-
Syros (1)
-
-
-
-
Iberian Peninsula
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Central Iberian Zone (1)
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Iberian Massif (1)
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Spain (1)
-
-
-
Western Europe
-
France
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French Pyrenees (1)
-
-
United Kingdom
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Great Britain
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Scotland (1)
-
-
-
-
-
faults (20)
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folds (1)
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foliation (1)
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geochemistry (6)
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geochronology (9)
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geomorphology (2)
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Graptolithina
-
Graptoloidea (1)
-
-
Hemichordata (1)
-
hydrogen
-
D/H (1)
-
-
hydrology (1)
-
igneous rocks
-
granophyre (1)
-
plutonic rocks
-
granites (3)
-
granodiorites (1)
-
-
volcanic rocks
-
glasses
-
obsidian (1)
-
volcanic glass (1)
-
-
pyroclastics
-
ash-flow tuff (1)
-
ignimbrite (2)
-
pumice (1)
-
-
trachyandesites (1)
-
-
-
inclusions (1)
-
Indian Ocean
-
Red Sea
-
Red Sea Rift (1)
-
-
-
intrusions (6)
-
isotopes
-
radioactive isotopes
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Be-10 (1)
-
C-14 (1)
-
-
stable isotopes
-
D/H (1)
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (2)
-
Sr-87/Sr-86 (1)
-
-
-
lava (1)
-
lineation (1)
-
magmas (2)
-
mantle (1)
-
Mediterranean region
-
Aegean Islands
-
Greek Aegean Islands
-
Cyclades
-
Syros (1)
-
-
-
-
-
Mediterranean Sea
-
Hellenic Trench (1)
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous (2)
-
Middle Cretaceous (1)
-
Upper Cretaceous
-
Codell Sandstone Member (1)
-
Coniacian (1)
-
Fox Hills Formation (1)
-
Laramie Formation (1)
-
Maestrichtian (2)
-
Pierre Shale (1)
-
-
-
Jurassic (3)
-
lower Mesozoic (1)
-
Newark Supergroup (1)
-
Triassic
-
Upper Triassic
-
Carnian (1)
-
Chinle Formation (1)
-
-
-
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
-
metamorphic rocks
-
gneisses (4)
-
granulites (2)
-
metaigneous rocks
-
serpentinite (1)
-
-
metasedimentary rocks (2)
-
metasomatic rocks
-
serpentinite (1)
-
-
mylonites
-
ultramylonite (1)
-
-
schists
-
blueschist (1)
-
-
-
metamorphism (1)
-
metasomatism (2)
-
Mexico
-
Baja California Mexico (1)
-
Tabasco Mexico (1)
-
Veracruz Mexico (1)
-
-
noble gases
-
helium (1)
-
-
North America
-
Appalachians (3)
-
Basin and Range Province
-
Great Basin (1)
-
-
Great Plains
-
Southern Great Plains (1)
-
-
Gulf Coastal Plain (1)
-
North American Cordillera (3)
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North American Craton (1)
-
Rocky Mountains
-
U. S. Rocky Mountains (1)
-
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Western Interior (1)
-
-
ocean basins (1)
-
Ocean Drilling Program
-
Leg 155
-
ODP Site 936 (1)
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ODP Site 946 (1)
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orogeny (5)
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oxygen
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O-18/O-16 (2)
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Pacific Ocean
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East Pacific
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Northeast Pacific
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Gulf of California (1)
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North Pacific
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Northeast Pacific
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Gulf of California (1)
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-
-
-
paleoclimatology (4)
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paleogeography (15)
-
Paleozoic
-
Cambrian
-
Acadian (1)
-
-
Carboniferous
-
Diamond Peak Formation (1)
-
Pennsylvanian
-
Upper Pennsylvanian (1)
-
-
-
Devonian
-
Middle Devonian
-
Eifelian (1)
-
Givetian (1)
-
-
-
Ordovician
-
Upper Ordovician
-
Hirnantian (1)
-
-
-
Permian
-
Lower Permian
-
Leonardian (1)
-
Wolfcampian (1)
-
-
Lyons Sandstone (1)
-
-
Silurian
-
Lower Silurian
-
Llandovery
-
Rhuddanian (1)
-
-
-
-
upper Paleozoic (1)
-
-
petroleum (1)
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Phanerozoic (3)
-
plate tectonics (20)
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Precambrian
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Archean (2)
-
upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic
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Cryogenian (1)
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Ediacaran (1)
-
-
Paleoproterozoic
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Birimian (1)
-
-
-
-
-
Pterobranchia (1)
-
remote sensing (1)
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sea-level changes (3)
-
sedimentary rocks
-
clastic rocks
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conglomerate (3)
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Fluvial response to Late Pleistocene–Holocene climate change in the Colorado River drainage, central Texas, USA: REPLY Open Access
Tracking cycles of Phanerozoic opening and closing of ocean basins using detrital rutile and zircon geochronology and geochemistry Open Access
Coherent underplating of HP–LT blueschist packages and basement during Hellenic subduction recorded by zircon U–Pb data, Pelion, Greece Available to Purchase
Insights into Caribbean tectonics from a detrital zircon U-Pb provenance study of siliciclastic strata in western and central Cuba Available to Purchase
Detrital U-Pb ages for the first well-preserved vascular plant Cooksonia from the UK and Irish macrofossil record. Open Access
How old is the Ordovician–Silurian boundary at Dob’s Linn, Scotland? Integrating LA-ICP-MS and CA-ID-TIMS U-Pb zircon dates Open Access
Impact of Mexican Border rift structural inheritance on Laramide rivers of the Tornillo basin, west Texas (USA): Insights from detrital zircon provenance Open Access
Detrital zircon and apatite U-Pb provenance and drainage evolution of the Newark Basin during progressive rifting and continental breakup along the Eastern North American Margin, USA Open Access
Fluvial response to Late Pleistocene–Holocene climate change in the Colorado River drainage, central Texas, USA Open Access
Modern sand provenance and transport across the western Gulf of Mexico margin Open Access
Cenozoic slip along the southern Sierra Nevada normal fault, California (USA): A long-lived stable western boundary of the Basin and Range Open Access
Hf isotopes in detrital zircon grains of the Sierra Albarrana Domain (SW Iberian Massif): Eburnean v. Archean basement signatures Available to Purchase
Progressive Miocene unroofing of the Big Maria and Riverside Mountains (southeastern California, USA) along the southwestern margin of the Colorado River extensional corridor Open Access
Pre-Pangean evolution of central southern Laurentia: Insights from zircon U/Pb geochronology, Marathon-Solitario fold-and-thrust belt, west Texas Available to Purchase
ABSTRACT Upper Cambrian through Middle Ordovician sedimentary strata of the Marathon/Solitario Basin (west Texas), which were folded and thrust-faulted during late Paleozoic Appalachian-Ouachita orogenesis, preserve evidence of the pre-Pangean history of the central southern Laurentian margin. New detrital zircon analyses reported here are from three Marathon Basin/Solitario formations: the upper Cambrian Dagger Flat Sandstone; the Lower Ordovician Marathon Formation, including the Rodrigues Tank Sandstone Member; and the Middle Ordovician Ft. Peña Formation. The far-southwestern outcrops of those Iapetus margin strata are within the Solitario dome (Presidio and Brewster Counties, Texas). Solitario zircon U/Pb geochronological results (laser ablation–inductively coupled plasma–mass spectrometry [LA-ICP-MS], sensitive high-resolution ion microprobe [SHRIMP]) expand the record of Cryogenian rifting as the Cuyania terrane separated from Laurentia. We evaluated these new data along with earlier geochronological and geochemical results from rift-related lava clasts in Lower–Middle Ordovician sedimentary subaqueous debris-flow deposits in the northwestern Marathon Basin. Deepening of the Iapetus seaway near the Laurentian margin (late Cambrian–Middle Ordovician) stimulated headward erosion of drainages, reflected in the systematic north-northwestward shift in zircon provenance from the west Texas Grenvillian and Southern Granite-Rhyolite Provinces to Yavapai-Mazatzal and Cheyenne Belt sources. The Cuyania rifted terrane underwent subduction at the western Gondwanan margin of the Iapetus Ocean in mid-Ordovician time (486 ± 7 Ma to 463 ± 4 Ma), and the resulting volcanism in the Famatina complex (Argentina) was most intense from ca. 472 to 468 Ma. Magmatic zircons from Ft. Peña bentonitic layers have identical U/Pb (488–468 Ma) and biostratigraphic (Darriwilian) ages to those from Famatinian bentonites at Talacasto (470 ± 5 Ma) in the Precordillera of Cuyania. Geologically constrained paleomagnetic reconstructions for 470 Ma depict the proximity of the Famatina arc, the rifted Cuyania terrane, and southern Laurentia at low southern latitudes (equator to ~30°S). These first U/Pb geochronological data from the Marathon/Solitario depocenter of western Iapetus appear to be compatible with such a configuration and can serve as test data for emerging tectonic interpretations.
Cenozoic kinematic histories of the Tidding and Lohit thrusts in the northern Indo-Burma Ranges: Implications for crustal thickening and exhumation of Gangdese lower arc crust along the Indus-Yarlung suture zone Available to Purchase
Covering the Great Unconformity in southern Laurentia during Rodinia breakup: Detrital zircon studies of provenance evolution during Cambrian marine transgression (Llano Uplift, Texas) Available to Purchase
Tectonic influence on axial-transverse sediment routing in the Denver Basin Available to Purchase
ABSTRACT Detrital zircon U-Pb and (U-Th)/He ages from latest Cretaceous–Eocene strata of the Denver Basin provide novel insights into evolving sediment sourcing, recycling, and dispersal patterns during deposition in an intracontinental foreland basin. In total, 2464 U-Pb and 78 (U-Th)/He analyses of detrital zircons from 21 sandstone samples are presented from outcrop and drill core in the proximal and distal portions of the Denver Basin. Upper Cretaceous samples that predate uplift of the southern Front Range during the Laramide orogeny (Pierre Shale, Fox Hills Sandstone, and Laramie Formation) contain prominent Late Cretaceous (84–77 Ma), Jurassic (169–163 Ma), and Proterozoic (1.69–1.68 Ga) U-Pb ages, along with less abundant Paleozoic through Archean zircon grain ages. These grain ages are consistent with sources in the western U.S. Cordillera, including the Mesozoic Cordilleran magmatic arc and Yavapai-Mazatzal basement, with lesser contributions of Grenville and Appalachian zircon recycled from older sedimentary sequences. Mesozoic zircon (U-Th)/He ages confirm Cordilleran sources and/or recycling from the Sevier orogenic hinterland. Five of the 11 samples from syn-Laramide basin fill (latest Cretaceous–Paleocene D1 Sequence) and all five samples from the overlying Eocene D2 Sequence are dominated by 1.1–1.05 Ga zircon ages that are interpreted to reflect local derivation from the ca. 1.1 Ga Pikes Peak batholith. Corresponding late Mesoproterozoic to early Neoproterozoic zircon (U-Th)/He ages are consistent with local sourcing from the southern Front Range that underwent limited Mesozoic–Cenozoic unroofing. The other six samples from the D1 Sequence yielded detrital zircon U-Pb ages similar to pre-Laramide units, with major U-Pb age peaks at ca. 1.7 and 1.4 Ga but lacking the 1.1 Ga age peak found in the other syn-Laramide samples. One of these samples yielded abundant Mesozoic and Paleozoic (U-Th)/He ages, including prominent Early and Late Cretaceous peaks. We propose that fill of the Denver Basin represents the interplay between locally derived sediment delivered by transverse drainages that emanated from the southern Front Range and a previously unrecognized, possibly extraregional, axial-fluvial system. Transverse alluvial-fluvial fans, preserved in proximal basin fill, record progressive unroofing of southern Front Range basement during D1 and D2 Sequence deposition. Deposits of the upper and lower D1 Sequence across the basin were derived from these fans that emanated from the southern Front Range. However, the finer-grained, middle portion of the D1 Sequence that spans the Cretaceous-Paleogene boundary was deposited by both transverse (proximal basin fill) and axial (distal basin fill) fluvial systems that exhibit contrasting provenance signatures. Although both tectonic and climatic controls likely influenced the stratigraphic development of the Denver Basin, the migration of locally derived fans toward and then away from the thrust front suggests that uplift of the southern Front Range may have peaked at approximately the Cretaceous-Paleogene boundary.