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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
-
-
Southern Africa
-
Namibia (1)
-
-
-
Antarctica
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Transantarctic Mountains
-
Pensacola Mountains (1)
-
-
Victoria Land (1)
-
West Antarctica (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (2)
-
Kuznetsk Alatau (1)
-
-
Altai Russian Federation
-
Gorny Altai (2)
-
-
Altai-Sayan region (1)
-
Buryat Russian Federation
-
Vitim Plateau (1)
-
-
Far East
-
China
-
Guiyang China (1)
-
Guizhou China (1)
-
Hubei China (1)
-
Hunan China (1)
-
Yangtze Platform (3)
-
Yunnan China (2)
-
-
Mongolia (3)
-
-
Himalayas
-
Lesser Himalayas (1)
-
-
Indian Peninsula
-
India (1)
-
-
Irkutsk Russian Federation (1)
-
Kiya River (1)
-
Krasnoyarsk Russian Federation
-
Igarka Russian Federation (2)
-
Kotuy River (1)
-
-
Lena River (2)
-
Salair Ridge (1)
-
Siberia (10)
-
Siberian Platform
-
Anabar Shield (2)
-
-
Transbaikalia (1)
-
Tuva Russian Federation (1)
-
West Siberia
-
Kuznetsk Alatau (1)
-
-
Western Transbaikalia (1)
-
Yakutia Russian Federation
-
Aldan River (1)
-
Anabar River (1)
-
Anabar Shield (2)
-
Olenek River (1)
-
-
Yenisei River (1)
-
-
Australasia
-
Australia
-
South Australia
-
Eyre Peninsula (1)
-
Flinders Ranges (2)
-
-
-
-
Battle Mountain (1)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
New Brunswick
-
Saint John County New Brunswick
-
Saint John New Brunswick (1)
-
-
-
-
Newfoundland and Labrador
-
Labrador (2)
-
Newfoundland (3)
-
-
-
Mackenzie Mountains (1)
-
Western Canada
-
Alberta (1)
-
British Columbia (3)
-
Canadian Cordillera (1)
-
Northwest Territories (1)
-
Yukon Territory (4)
-
-
-
Commonwealth of Independent States
-
Russian Federation
-
Altai Russian Federation
-
Gorny Altai (2)
-
-
Buryat Russian Federation
-
Vitim Plateau (1)
-
-
Irkutsk Russian Federation (1)
-
Kiya River (1)
-
Krasnoyarsk Russian Federation
-
Igarka Russian Federation (2)
-
Kotuy River (1)
-
-
Kuznetsk Alatau (1)
-
Lena River (2)
-
Salair Ridge (1)
-
Siberian Platform
-
Anabar Shield (2)
-
-
Transbaikalia (1)
-
Tuva Russian Federation (1)
-
Western Transbaikalia (1)
-
Yakutia Russian Federation
-
Aldan River (1)
-
Anabar River (1)
-
Anabar Shield (2)
-
Olenek River (1)
-
-
Yenisei River (1)
-
-
West Siberia
-
Kuznetsk Alatau (1)
-
-
-
Death Valley (1)
-
Europe
-
Baltic region (1)
-
Central Europe
-
Poland (1)
-
-
Southern Europe
-
Iberian Peninsula
-
Ossa-Morena Zone (1)
-
Spain (1)
-
-
Italy
-
Sardinia Italy (1)
-
-
-
Western Europe
-
France
-
Armorican Massif (1)
-
Aude France (1)
-
Central Massif
-
Montagne Noire (2)
-
-
Normandy (1)
-
Tarn France (1)
-
-
Scandinavia (1)
-
-
-
Mexico
-
Sonora Mexico (2)
-
-
North America
-
Appalachians
-
Northern Appalachians (1)
-
Southern Appalachians (1)
-
Valley and Ridge Province (1)
-
-
Basin and Range Province
-
Great Basin (1)
-
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
-
Russian Platform (1)
-
United States
-
Alabama
-
Chilton County Alabama (1)
-
Clay County Alabama (1)
-
Coosa County Alabama (1)
-
Shelby County Alabama (1)
-
Talladega County Alabama (2)
-
-
Alaska (3)
-
California
-
Inyo County California
-
Funeral Mountains (1)
-
Inyo Mountains (1)
-
-
-
Great Basin (1)
-
Maine (1)
-
Nevada
-
Esmeralda County Nevada
-
Goldfield Nevada (1)
-
-
-
New Jersey (1)
-
Talladega Front (1)
-
Washington (3)
-
-
USSR (3)
-
White Mountains (1)
-
-
commodities
-
boron deposits (1)
-
metal ores
-
polymetallic ores (1)
-
-
mineral deposits, genesis (1)
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (11)
-
-
isotope ratios (12)
-
isotopes
-
radioactive isotopes
-
Ar-40/Ar-39 (1)
-
-
stable isotopes
-
Ar-40/Ar-39 (1)
-
C-13/C-12 (11)
-
Nd-144/Nd-143 (3)
-
O-18/O-16 (2)
-
Sr-87/Sr-86 (2)
-
-
-
metals
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (2)
-
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (3)
-
-
-
-
noble gases
-
argon
-
Ar-40/Ar-39 (1)
-
-
-
oxygen
-
O-18/O-16 (2)
-
-
-
fossils
-
Chordata
-
Vertebrata
-
Pisces (1)
-
-
-
cyanobacteria
-
Renalcis (4)
-
-
eukaryotes (2)
-
ichnofossils (1)
-
Invertebrata
-
Archaeocyatha (91)
-
Arthropoda
-
Trilobitomorpha
-
Trilobita
-
Agnostida (1)
-
-
-
-
Brachiopoda (4)
-
Cnidaria
-
Anthozoa (1)
-
-
Echinodermata (1)
-
Mollusca
-
Gastropoda (2)
-
Hyolithes (3)
-
-
Porifera
-
Calcarea
-
Sphinctozoa (2)
-
-
Demospongea
-
Chaetetida (1)
-
-
Stromatoporoidea (1)
-
-
Protista
-
Foraminifera (1)
-
-
-
Metazoa (5)
-
microfossils
-
Conodonta (1)
-
-
palynomorphs
-
acritarchs (4)
-
Dinoflagellata (1)
-
-
Plantae
-
algae
-
Epiphyton (4)
-
-
-
problematic fossils (6)
-
prokaryotes (1)
-
thallophytes (6)
-
-
geochronology methods
-
paleomagnetism (1)
-
Sm/Nd (2)
-
U/Pb (4)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
-
-
Mesozoic (1)
-
Paleozoic
-
Cambrian
-
Carrara Formation (1)
-
Lower Cambrian
-
Atdabanian (4)
-
Poleta Formation (4)
-
Shady Dolomite (1)
-
Tommotian (10)
-
-
Middle Cambrian (4)
-
Upper Cambrian (2)
-
-
Carboniferous (1)
-
Devonian (1)
-
lower Paleozoic (1)
-
Ordovician (2)
-
Sauk Sequence (1)
-
Silurian (1)
-
Talladega Group (1)
-
-
Phanerozoic (1)
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic
-
Ediacaran (6)
-
Marinoan (1)
-
Riphean (2)
-
Vendian (8)
-
-
-
-
-
Yudomian (1)
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
diabase (1)
-
diorites
-
quartz diorites (1)
-
tonalite (2)
-
-
gabbros (2)
-
granites
-
granite porphyry (1)
-
granosyenite (1)
-
leucogranite (1)
-
-
syenites
-
granosyenite (1)
-
-
-
porphyry (1)
-
volcanic rocks
-
adakites (1)
-
andesites (1)
-
basalts
-
mid-ocean ridge basalts (1)
-
ocean-island basalts (1)
-
tholeiite (1)
-
-
pyroclastics
-
tuff (2)
-
-
rhyodacites (1)
-
rhyolites (1)
-
-
-
ophiolite (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
metasedimentary rocks (1)
-
schists
-
greenschist (1)
-
-
-
ophiolite (1)
-
-
meteorites
-
meteorites
-
iron meteorites
-
octahedrite
-
Henbury Meteorite (1)
-
-
-
-
-
minerals
-
oxides
-
magnetite (1)
-
-
silicates
-
chain silicates
-
amphibole group
-
clinoamphibole
-
hornblende (1)
-
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (3)
-
-
-
-
-
sulfides
-
pyrite (1)
-
-
-
Primary terms
-
absolute age (4)
-
Africa
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
-
-
-
Southern Africa
-
Namibia (1)
-
-
-
Antarctica
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Transantarctic Mountains
-
Pensacola Mountains (1)
-
-
Victoria Land (1)
-
West Antarctica (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (2)
-
Kuznetsk Alatau (1)
-
-
Altai Russian Federation
-
Gorny Altai (2)
-
-
Altai-Sayan region (1)
-
Buryat Russian Federation
-
Vitim Plateau (1)
-
-
Far East
-
China
-
Guiyang China (1)
-
Guizhou China (1)
-
Hubei China (1)
-
Hunan China (1)
-
Yangtze Platform (3)
-
Yunnan China (2)
-
-
Mongolia (3)
-
-
Himalayas
-
Lesser Himalayas (1)
-
-
Indian Peninsula
-
India (1)
-
-
Irkutsk Russian Federation (1)
-
Kiya River (1)
-
Krasnoyarsk Russian Federation
-
Igarka Russian Federation (2)
-
Kotuy River (1)
-
-
Lena River (2)
-
Salair Ridge (1)
-
Siberia (10)
-
Siberian Platform
-
Anabar Shield (2)
-
-
Transbaikalia (1)
-
Tuva Russian Federation (1)
-
West Siberia
-
Kuznetsk Alatau (1)
-
-
Western Transbaikalia (1)
-
Yakutia Russian Federation
-
Aldan River (1)
-
Anabar River (1)
-
Anabar Shield (2)
-
Olenek River (1)
-
-
Yenisei River (1)
-
-
Australasia
-
Australia
-
South Australia
-
Eyre Peninsula (1)
-
Flinders Ranges (2)
-
-
-
-
biogeography (8)
-
biography (1)
-
boron deposits (1)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
New Brunswick
-
Saint John County New Brunswick
-
Saint John New Brunswick (1)
-
-
-
-
Newfoundland and Labrador
-
Labrador (2)
-
Newfoundland (3)
-
-
-
Mackenzie Mountains (1)
-
Western Canada
-
Alberta (1)
-
British Columbia (3)
-
Canadian Cordillera (1)
-
Northwest Territories (1)
-
Yukon Territory (4)
-
-
-
carbon
-
C-13/C-12 (11)
-
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
-
-
Chordata
-
Vertebrata
-
Pisces (1)
-
-
-
continental drift (2)
-
continental shelf (1)
-
diagenesis (2)
-
epeirogeny (1)
-
Europe
-
Baltic region (1)
-
Central Europe
-
Poland (1)
-
-
Southern Europe
-
Iberian Peninsula
-
Ossa-Morena Zone (1)
-
Spain (1)
-
-
Italy
-
Sardinia Italy (1)
-
-
-
Western Europe
-
France
-
Armorican Massif (1)
-
Aude France (1)
-
Central Massif
-
Montagne Noire (2)
-
-
Normandy (1)
-
Tarn France (1)
-
-
Scandinavia (1)
-
-
-
faults (3)
-
folds (1)
-
geochemistry (4)
-
geochronology (1)
-
ichnofossils (1)
-
igneous rocks
-
plutonic rocks
-
diabase (1)
-
diorites
-
quartz diorites (1)
-
tonalite (2)
-
-
gabbros (2)
-
granites
-
granite porphyry (1)
-
granosyenite (1)
-
leucogranite (1)
-
-
syenites
-
granosyenite (1)
-
-
-
porphyry (1)
-
volcanic rocks
-
adakites (1)
-
andesites (1)
-
basalts
-
mid-ocean ridge basalts (1)
-
ocean-island basalts (1)
-
tholeiite (1)
-
-
pyroclastics
-
tuff (2)
-
-
rhyodacites (1)
-
rhyolites (1)
-
-
-
intrusions (2)
-
Invertebrata
-
Archaeocyatha (91)
-
Arthropoda
-
Trilobitomorpha
-
Trilobita
-
Agnostida (1)
-
-
-
-
Brachiopoda (4)
-
Cnidaria
-
Anthozoa (1)
-
-
Echinodermata (1)
-
Mollusca
-
Gastropoda (2)
-
Hyolithes (3)
-
-
Porifera
-
Calcarea
-
Sphinctozoa (2)
-
-
Demospongea
-
Chaetetida (1)
-
-
Stromatoporoidea (1)
-
-
Protista
-
Foraminifera (1)
-
-
-
isotopes
-
radioactive isotopes
-
Ar-40/Ar-39 (1)
-
-
stable isotopes
-
Ar-40/Ar-39 (1)
-
C-13/C-12 (11)
-
Nd-144/Nd-143 (3)
-
O-18/O-16 (2)
-
Sr-87/Sr-86 (2)
-
-
-
lava (1)
-
Mesozoic (1)
-
metal ores
-
polymetallic ores (1)
-
-
metals
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (2)
-
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (3)
-
-
-
-
metamorphic rocks
-
metasedimentary rocks (1)
-
schists
-
greenschist (1)
-
-
-
metasomatism (1)
-
meteorites
-
iron meteorites
-
octahedrite
-
Henbury Meteorite (1)
-
-
-
-
Mexico
-
Sonora Mexico (2)
-
-
mineral deposits, genesis (1)
-
museums (1)
-
noble gases
-
argon
-
Ar-40/Ar-39 (1)
-
-
-
North America
-
Appalachians
-
Northern Appalachians (1)
-
Southern Appalachians (1)
-
Valley and Ridge Province (1)
-
-
Basin and Range Province
-
Great Basin (1)
-
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
-
orogeny (2)
-
oxygen
-
O-18/O-16 (2)
-
-
paleoclimatology (3)
-
paleoecology (21)
-
paleogeography (10)
-
paleomagnetism (1)
-
paleontology (28)
-
Paleozoic
-
Cambrian
-
Carrara Formation (1)
-
Lower Cambrian
-
Atdabanian (4)
-
Poleta Formation (4)
-
Shady Dolomite (1)
-
Tommotian (10)
-
-
Middle Cambrian (4)
-
Upper Cambrian (2)
-
-
Carboniferous (1)
-
Devonian (1)
-
lower Paleozoic (1)
-
Ordovician (2)
-
Sauk Sequence (1)
-
Silurian (1)
-
Talladega Group (1)
-
-
palynomorphs
-
acritarchs (4)
-
Dinoflagellata (1)
-
-
Phanerozoic (1)
-
Plantae
-
algae
-
Epiphyton (4)
-
-
-
plate tectonics (6)
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic
-
Ediacaran (6)
-
Marinoan (1)
-
Riphean (2)
-
Vendian (8)
-
-
-
-
-
problematic fossils (6)
-
reefs (6)
-
sea-level changes (2)
-
sedimentary petrology (2)
-
sedimentary rocks
-
carbonate rocks
-
boundstone (2)
-
dolostone (2)
-
grainstone (2)
-
limestone
-
micrite (1)
-
oolitic limestone (1)
-
-
packstone (1)
-
-
chemically precipitated rocks
-
chert (2)
-
phosphate rocks (1)
-
-
clastic rocks
-
arenite
-
quartz arenite (1)
-
-
diamictite (1)
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mudstone (1)
-
sandstone (1)
-
shale (2)
-
siltstone (2)
-
tillite (1)
-
-
-
sedimentary structures
-
biogenic structures
-
algal structures (1)
-
bioherms (12)
-
carbonate banks (1)
-
girvanella (1)
-
microbial mats (1)
-
oncolites (1)
-
stromatolites (3)
-
thrombolites (2)
-
-
planar bedding structures
-
hummocky cross-stratification (1)
-
laminations (1)
-
-
-
sedimentation (5)
-
stratigraphy (23)
-
structural geology (1)
-
tectonics (5)
-
thallophytes (6)
-
United States
-
Alabama
-
Chilton County Alabama (1)
-
Clay County Alabama (1)
-
Coosa County Alabama (1)
-
Shelby County Alabama (1)
-
Talladega County Alabama (2)
-
-
Alaska (3)
-
California
-
Inyo County California
-
Funeral Mountains (1)
-
Inyo Mountains (1)
-
-
-
Great Basin (1)
-
Maine (1)
-
Nevada
-
Esmeralda County Nevada
-
Goldfield Nevada (1)
-
-
-
New Jersey (1)
-
Talladega Front (1)
-
Washington (3)
-
-
USSR (3)
-
X-ray analysis (1)
-
-
rock formations
-
Krol Formation (1)
-
Nama Group (1)
-
Tal Formation (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
carbonate rocks
-
boundstone (2)
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dolostone (2)
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grainstone (2)
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limestone
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micrite (1)
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oolitic limestone (1)
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packstone (1)
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chemically precipitated rocks
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chert (2)
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phosphate rocks (1)
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clastic rocks
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arenite
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quartz arenite (1)
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diamictite (1)
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mudstone (1)
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sandstone (1)
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shale (2)
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siltstone (2)
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siliciclastics (5)
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sedimentary structures
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mounds (1)
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sedimentary structures
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biogenic structures
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algal structures (1)
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bioherms (12)
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carbonate banks (1)
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girvanella (1)
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microbial mats (1)
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oncolites (1)
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stromatolites (3)
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thrombolites (2)
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planar bedding structures
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hummocky cross-stratification (1)
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laminations (1)
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sediments
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siliciclastics (5)
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Archaeocyatha
DEAD CLADE WALKING: THE PERSISTENCE OF ARCHAEOCYATHUS IN THE AFTERMATH OF EARLY CAMBRIAN REEF EXTINCTION IN THE WESTERN UNITED STATES
Early biomineralization and exceptional preservation of the first thrombolite reefs with archaeocyaths in the lower Cambrian of the western Anti-Atlas, Morocco
Precise early Cambrian U–Pb zircon dates bracket the oldest trilobites and archaeocyaths in Moroccan West Gondwana
Prey fractionation in the Archaeocyatha and its implication for the ecology of the first animal reef systems
INCREASE IN CARBONATE CONTRIBUTION FROM FRAMEWORK-BUILDING METAZOANS THROUGH EARLY CAMBRIAN REEFS OF THE WESTERN BASIN AND RANGE, USA
Restricted morphospace occupancy of early Cambrian reef-building archaeocyaths
ROBERT BEDFORD (1874–1951), THE KYANCUTTA MUSEUM, AND A UNIQUE CONTRIBUTION TO INTERNATIONAL GEOLOGY
Tommotian (Lower Cambrian) stratigraphy and fossil fauna communities in the Kiya River section (Kuznetsk Alatau)
Integrated stratigraphic, geochemical, and paleontological late Ediacaran to early Cambrian records from southwestern Mongolia: Comment
Integrated stratigraphic, geochemical, and paleontological late Ediacaran to early Cambrian records from southwestern Mongolia: Reply
The Lower Cambrian of the Salair and Gorny Altai (Siberia) revisited
Archaeocyathan zonation of the Yangtze Platform: Implications for regional and global correlation of lower Cambrian stages
Overview of Lower Cambrian Mixed Carbonate-siliciclastic Deposition along the Western Laurentian Passive Margin
Abstract The Lower Cambrian (Waucoban Series; Fallotaspis–Olenellus Biozone) carbonate-siliciclastic units of western Laurentia outcrop from Sonora, Mexico, to western Nevada, and from northeastern Washington to east-central Alaska. The allochthonous Cassiar terrane in northwestern British Columbia was originally deposited between these two segments, forming a widespread large carbonate platform along this margin during the initial Paleozoic flooding (basal Sauk megasequence) of North America. The Lower Cambrian carbonate-siliciclastic units of western Laurentia commonly are subdivided into two second-order or composite third-order depositional sequences. The lowstand systems tracts to these sequences commonly are marine siliciclastics that grade upward into transgressive systems tracts composed of interbedded shaly carbonates or carbonate-rich shales that grade upward into carbonate-dominated highstand systems tracts. The carbonates commonly record deposition on a gently sloping ramp; however, areas of localized syndepositional extensional faulting created locally faulted carbonate margins. Large allochthonous blocks of shallow-water carbonates and siliciclastics were deposited basinward of these active fault zones. The facies of the western Laurentian Lower Cambrian carbonate ramps, arranged from land toward the basin, are fluvial nearshore siliciclastics, carbonate tidal flats, mixed carbonate-siliciclastic lagoons, high-energy ooid grainstone shoals containing or surrounded by algal-archaeocyathan mounds, downslope nodular facies, and interbedded calcisiltite and shale deposited below a fair-weather wave base. The algal-archaeocyathan mounds constructed small isolated biostromes (<90 m [<295 ft] thick), not large continuous reefs. The continuity of the ooid grainstone shoals along the western Laurentian margin indicates that they formed a barrier separating restricted facies to the east from open-marine facies to the west that stretched from present-day east-central Alaska to northwestern Mexico.
The chronostratigraphic space of the lithosphere and the Vendian as a geohistorical subdivision of the Neoproterozoic
The tectonomagmatic evolution of structure-lithologic complexes in the Tannu-Ola zone, Tuva, in the Late Vendian–Early Cambrian ( from geochemical , Nd isotope, and geochronological data )
Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai ( southwestern Siberia )
The Late Riphean–Paleozoic history of the Uda–Vitim island arc system in the Transbaikalian sector of the Paleoasian ocean
Abstract Esmeralda County, Nevada, is extraordinary for the presence of Ediacaran and early Cambrian reefs at several stratigraphic positions. In this road log and field guide we present descriptions and interpretations of the most instructive exposures of three of these reef-rich intervals: (1) the Mount Dunfee section of the Middle Member of the Deep Spring Formation (Ediacaran in age), (2) the Stewart's Mill exposure of the Lower Member of the Poleta Formation (mid-early Cambrian), and (3) an exposure on the north flank of Slate Ridge of reefs near the top of the Harkless Formation (latest early Cambrian). We introduce the term “congruent ecosystems” for ecosystems of different age that occupied similar environments. The Ediacaran reefs of the Deep Spring Formation and the early Cambrian reefs of the Lower Member of the Poleta Formation occupied similar environments but exhibit distinctively different ecological structure. Thus we propose these two reef complexes as our premier example of non-congruent communities within congruent ecosystems.