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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
North Africa
-
Algeria
-
Tindouf Algeria (1)
-
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
-
Egypt (1)
-
Morocco
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
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Tafilalt (2)
-
-
-
Sahara (1)
-
Southern Africa
-
South Africa
-
Cape fold belt (1)
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Western Cape Province South Africa (1)
-
-
-
-
Alexander Terrane (1)
-
Arctic region
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Greenland
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East Greenland (1)
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Asia
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Arabian Peninsula
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Saudi Arabia (1)
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Far East
-
China
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Guangxi China (2)
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Japan
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Honshu
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Iwate Japan
-
Kitakami Mountains (1)
-
-
-
-
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Tyumen Russian Federation
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Yamal-Nenets Russian Federation
-
Yamal (1)
-
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West Siberia
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Siberian Lowland (1)
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Australasia
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New Zealand (1)
-
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Bathurst Island (3)
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Canada
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Arctic Archipelago (3)
-
Eastern Canada
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Maritime Provinces
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New Brunswick
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Restigouche County New Brunswick (1)
-
-
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Ontario (5)
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Quebec
-
Gaspe Peninsula (1)
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Rimouski County Quebec (1)
-
-
-
Mackenzie Mountains (2)
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Nunavut
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Ellesmere Island (4)
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Sverdrup Basin (1)
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Queen Elizabeth Islands
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Ellesmere Island (4)
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Sverdrup Basin (1)
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Western Canada
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Alberta
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Manitoba (3)
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Yukon Territory (3)
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Commonwealth of Independent States
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Belarus
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Russian Federation
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Tyumen Russian Federation
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Timan Ridge (1)
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Urals
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West Siberia
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Siberian Lowland (1)
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Europe
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Alps
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Eastern Alps
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Belarus
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Zhitkovichi Belarus (2)
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Central Europe
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Austria
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Carinthia Austria (1)
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Bohemian Massif (1)
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Czech Republic
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Bohemia
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Moravia (1)
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Germany
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Eifel (1)
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Poland
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Pyrenees (1)
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Timan Ridge (1)
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Variscides (1)
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Western Europe
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Ardennes (2)
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Belgium
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Dinant Basin (1)
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Ireland (1)
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United Kingdom
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Wales (1)
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Mackenzie River valley (2)
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McGrath Quadrangle (5)
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California (1)
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Oregon (1)
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commodities
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elements, isotopes
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isotope ratios (3)
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isotopes
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metals
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oxygen
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phosphorus
-
organic phosphorus (1)
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-
-
fossils
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burrows (1)
-
Chordata
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Vertebrata
-
Agnatha
-
Heterostraci (1)
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Ostracodermi (1)
-
-
Pisces
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Acanthodii (1)
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Osteichthyes
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Sarcopterygii (1)
-
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Placodermi
-
Arthrodira (1)
-
-
-
-
-
ichnofossils (1)
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Invertebrata
-
Arthropoda
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Chelicerata (1)
-
Mandibulata
-
Crustacea
-
Ostracoda (2)
-
-
-
Trilobitomorpha
-
Trilobita
-
Phacopida
-
Phacopina
-
Phacops (1)
-
-
-
Ptychopariida
-
Proetidae (1)
-
-
-
-
-
Brachiopoda
-
Articulata
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Orthida
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Enteletacea
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Schizophoria (1)
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Productida (1)
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Rhynchonellida (2)
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Spiriferida
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Atrypidae
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Atrypa (1)
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-
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Strophomenida (2)
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Terebratulida (3)
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-
Inarticulata (1)
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-
Bryozoa
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Trepostomata (1)
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Cnidaria
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Anthozoa
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Tabulata
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Scyphozoa
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Echinodermata
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Crinozoa
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Mollusca
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Bivalvia
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Goniatitida (1)
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Nautiloidea (1)
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Gastropoda
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Turritellidae
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Hyolithes (1)
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Tentaculitida
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Tentaculitidae
-
Tentaculites (1)
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-
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-
Porifera
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Calcarea (1)
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Stromatoporoidea (6)
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Protista
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Foraminifera (2)
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Vermes
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Annelida (1)
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Polychaeta (1)
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scolecodonts (1)
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-
-
microfossils
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Chitinozoa (1)
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Conodonta
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Icriodus (4)
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Polygnathus (6)
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scolecodonts (1)
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miospores (1)
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Plantae
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algae
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Chlorophyta
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Pteridophyta
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problematic fossils (2)
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thallophytes (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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Tertiary
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Neogene
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Miocene (1)
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Paleogene
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Paleocene (1)
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Mesozoic (1)
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Moldanubian (1)
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Paleozoic
-
Carboniferous (1)
-
Devonian
-
Cedar City Formation (1)
-
Lower Devonian
-
Emsian (27)
-
Gedinnian (1)
-
Lochkovian (1)
-
Oriskany Sandstone (1)
-
Pragian (2)
-
Siegenian (2)
-
York River Formation (1)
-
-
Middle Devonian
-
Balaklala Rhyolite (1)
-
Cedar Valley Formation (1)
-
Columbus Limestone (4)
-
Delaware Limestone (3)
-
Detroit River Group (2)
-
Dundee Limestone (2)
-
Eifelian (108)
-
Givetian (30)
-
Hamilton Group (3)
-
Jeffersonville Limestone (1)
-
Ludlowville Formation (2)
-
Mahantango Formation (1)
-
Marcellus Shale (4)
-
Moscow Formation (1)
-
Onondaga Limestone (6)
-
Tioga Bentonite (1)
-
Winnipegosis Formation (2)
-
-
Old Red Sandstone (2)
-
Ponta Grossa Formation (1)
-
Ramparts Formation (1)
-
Upper Devonian
-
Famennian (1)
-
Frasnian (6)
-
Jefferson Group (1)
-
-
-
Helderberg Group (1)
-
Ordovician
-
Upper Ordovician
-
Ashgillian (1)
-
-
-
Silurian
-
Middle Silurian
-
Roberts Mountains Formation (1)
-
-
-
upper Paleozoic
-
Kaskaskia Sequence (1)
-
-
-
-
igneous rocks
-
igneous rocks
-
kimberlite (1)
-
volcanic rocks
-
pyroclastics
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tuff (1)
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-
volcanic ash (1)
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metamorphic rocks
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K-bentonite (1)
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minerals
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carbonates
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calcite (1)
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dolomite (2)
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magnesian calcite (1)
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K-bentonite (1)
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phosphates
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apatite (2)
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silicates
-
orthosilicates
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nesosilicates
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zircon group
-
zircon (2)
-
-
-
-
sheet silicates
-
illite (1)
-
mica group
-
phlogopite (1)
-
-
-
-
-
Primary terms
-
absolute age (3)
-
Africa
-
North Africa
-
Algeria
-
Tindouf Algeria (1)
-
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
-
Egypt (1)
-
Morocco
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
Tafilalt (2)
-
-
-
Sahara (1)
-
Southern Africa
-
South Africa
-
Cape fold belt (1)
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Western Cape Province South Africa (1)
-
-
-
-
Arctic region
-
Greenland
-
East Greenland (1)
-
-
-
Asia
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Arabian Peninsula
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Saudi Arabia (1)
-
-
Far East
-
China
-
Guangxi China (2)
-
-
Japan
-
Honshu
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Iwate Japan
-
Kitakami Mountains (1)
-
-
-
-
-
Tyumen Russian Federation
-
Yamal-Nenets Russian Federation
-
Yamal (1)
-
-
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West Siberia
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-
-
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Australasia
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-
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biogeography (21)
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Canada
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Arctic Archipelago (3)
-
Eastern Canada
-
Maritime Provinces
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New Brunswick
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Restigouche County New Brunswick (1)
-
-
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Ontario (5)
-
Quebec
-
Gaspe Peninsula (1)
-
Rimouski County Quebec (1)
-
-
-
Mackenzie Mountains (2)
-
Nunavut
-
Ellesmere Island (4)
-
Sverdrup Basin (1)
-
-
Queen Elizabeth Islands
-
Ellesmere Island (4)
-
Sverdrup Basin (1)
-
-
Western Canada
-
Alberta
-
Banff Alberta (1)
-
-
British Columbia (2)
-
Manitoba (3)
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Northwest Territories (10)
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Yukon Territory (3)
-
-
-
carbon
-
C-13/C-12 (2)
-
organic carbon (1)
-
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene (1)
-
-
Paleogene
-
Paleocene (1)
-
-
-
-
Chordata
-
Vertebrata
-
Agnatha
-
Heterostraci (1)
-
Ostracodermi (1)
-
-
Pisces
-
Acanthodii (1)
-
Osteichthyes
-
Sarcopterygii (1)
-
-
Placodermi
-
Arthrodira (1)
-
-
-
-
-
climate change (1)
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deformation (1)
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diagenesis (2)
-
Europe
-
Alps
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Eastern Alps
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Carnic Alps (1)
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-
-
Belarus
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Zhitkovichi Belarus (2)
-
-
Central Europe
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Austria
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Carinthia Austria (1)
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Bohemian Massif (1)
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Czech Republic
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Bohemia
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Prague Basin (1)
-
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Moravia (1)
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Germany
-
Eifel (1)
-
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Poland
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Swiety Krzyz Mountains (1)
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-
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Pyrenees (1)
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Rhenish Schiefergebirge
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Eifel (1)
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Timan Ridge (1)
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Variscides (1)
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Western Europe
-
Ardennes (2)
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Belgium
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Brabant Massif (1)
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Dinant Basin (1)
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France
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-
Ireland (1)
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United Kingdom
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Great Britain
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Bristol Channel (1)
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England (1)
-
Scotland
-
Highland region Scotland
-
Caithness Scotland (2)
-
Ross-shire Scotland (1)
-
-
Moray Firth (2)
-
Orkney Islands (1)
-
-
Wales (1)
-
-
-
-
-
folds (1)
-
geochemistry (1)
-
ichnofossils (1)
-
igneous rocks
-
kimberlite (1)
-
volcanic rocks
-
pyroclastics
-
tuff (1)
-
-
-
-
inclusions (2)
-
intrusions (1)
-
Invertebrata
-
Arthropoda
-
Chelicerata (1)
-
Mandibulata
-
Crustacea
-
Ostracoda (2)
-
-
-
Trilobitomorpha
-
Trilobita
-
Phacopida
-
Phacopina
-
Phacops (1)
-
-
-
Ptychopariida
-
Proetidae (1)
-
-
-
-
-
Brachiopoda
-
Articulata
-
Orthida
-
Enteletacea
-
Schizophoria (1)
-
-
-
Productida (1)
-
Rhynchonellida (2)
-
Spiriferida
-
Atrypidae
-
Atrypa (1)
-
-
-
Strophomenida (2)
-
Terebratulida (3)
-
-
Inarticulata (1)
-
-
Bryozoa
-
Trepostomata (1)
-
-
Cnidaria
-
Anthozoa
-
Zoantharia
-
Rugosa (5)
-
Tabulata
-
Favositida (1)
-
-
-
-
Scyphozoa
-
Conulariida (1)
-
-
-
Echinodermata
-
Crinozoa
-
Crinoidea (3)
-
-
-
Mollusca
-
Bivalvia
-
Pholadomyoida (1)
-
-
Cephalopoda
-
Ammonoidea
-
Goniatitida (1)
-
-
Nautiloidea (1)
-
-
Gastropoda
-
Archaeogastropoda (1)
-
Turritellidae
-
Turritella (1)
-
-
-
Hyolithes (1)
-
Tentaculitida
-
Tentaculitidae
-
Tentaculites (1)
-
-
-
-
Porifera
-
Calcarea (1)
-
Stromatoporoidea (6)
-
-
Protista
-
Foraminifera (2)
-
-
Vermes
-
Annelida (1)
-
Polychaeta (1)
-
scolecodonts (1)
-
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (2)
-
O-18/O-16 (3)
-
-
-
magmas (1)
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Mesozoic (1)
-
metals
-
cadmium (1)
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copper (1)
-
molybdenum (1)
-
zinc (1)
-
-
metamorphism (1)
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museums (1)
-
North America
-
Appalachian Basin (7)
-
Appalachians (1)
-
Canadian Shield
-
Slave Province (1)
-
-
Great Lakes region (2)
-
Gulf Coastal Plain (1)
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Michigan Basin (2)
-
Rocky Mountain Trench (1)
-
-
oil and gas fields (1)
-
orogeny (1)
-
oxygen
-
O-18/O-16 (3)
-
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
-
Gulf of Alaska (1)
-
-
-
North Pacific
-
Northeast Pacific
-
Gulf of Alaska (1)
-
-
-
-
paleobotany (2)
-
paleoclimatology (6)
-
paleoecology (14)
-
paleogeography (13)
-
paleomagnetism (2)
-
paleontology (29)
-
Paleozoic
-
Carboniferous (1)
-
Devonian
-
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Eifelian
Enhanced terrestrial nutrient release during the Devonian emergence and expansion of forests: Evidence from lacustrine phosphorus and geochemical records
Revision of two Devonian cupressocrinitids from the Schultze collection (Museum of Comparative Zoology, Harvard University) and description of a new Halocrinites (Crinoidea, Eucladida)
Chemostratigraphy as a tool for sequence stratigraphy in the Devonian Hare Indian Formation in the Mackenzie Mountains and Central Mackenzie Valley, Northwest Territories, Canada
Endocranial morphology of the petalichthyid placoderm Ellopetalichthys scheii from the Middle Devonian of Arctic Canada, with remarks on the inner ear and neck joint morphology of placoderms
Lithostratigraphy and sedimentology of the Middle Devonian Tra-Tra Formation, including the Grootrivier Member (Bokkeveld Group, Cape Supergroup), South Africa
Cheiracanthid acanthodians from the lower fossil fish-bearing horizons (Eifelian, Middle Devonian) of the Orcadian Basin, Scotland
ABSTRACT More than 100 air-fall volcanic tephra beds are currently documented from Devonian strata in the eastern United States. These beds act as key sources of various geological data. These include within-basin to basin-to-basin correlation, globally useful geochronologic age dates, and a relatively detailed, if incomplete, record of Acadian–Neoacadian silicic volcanism. The tephras occur irregularly through the vertical Devonian succession, in clusters of several beds, or scattered as a few to single beds. In this contribution, their vertical and lateral distribution and recent radiometric dates are reviewed. Current unresolved issues include correlation of the classic Eifelian-age (lower Middle Devonian) Tioga tephras and dates related to the age of the Onondaga-Marcellus contact in the Appalachian Basin. Here, we used two approaches to examine the paleovolcanic record of Acadian–Neoacadian silicic magmatism and volcanism. Reexamination of volcanic phenocryst distribution maps from the Tioga tephras indicates not one but four or more volcanic sources along the orogen, between southeastern Pennsylvania and northern North Carolina. Finally, radiometric and relative ages of the sedimentary basin tephras are compared and contrasted with current radiometric ages of igneous rocks from New England. Despite data gaps and biases in both records, their comparisons provide insights into Devonian silicic igneous activity in the eastern United States, and into various issues of recognition, deposition, and preservation of tephras in the sedimentary rock record.