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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
-
Africa
-
Southern Africa
-
Kaapvaal Craton (1)
-
Namibia (1)
-
South Africa
-
Bushveld Complex (1)
-
Cape fold belt (1)
-
Transvaal region (1)
-
-
-
West Africa
-
Benue Valley (1)
-
Mali (1)
-
Nigeria (1)
-
-
West African Craton (1)
-
-
Antarctica
-
Antarctic Peninsula
-
Graham Land (1)
-
-
-
Asia
-
Far East
-
Korea (1)
-
-
Middle East
-
Turkey
-
Anatolia (1)
-
-
-
-
Atlantic Ocean
-
North Atlantic
-
Faeroe-Shetland Basin (1)
-
-
-
Australasia
-
Australia
-
Arunta Block (1)
-
Northern Territory Australia (1)
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Queensland Australia
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Mount Isa Australia (1)
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-
-
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Avalon Zone (1)
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Blue Mountain (1)
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Blue Mountains (1)
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Caledonides (2)
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Canada
-
Eastern Canada
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Maritime Provinces
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Nova Scotia
-
Cape Breton Island (1)
-
-
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
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Jamaica (1)
-
-
-
-
-
Cascade Range (1)
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Europe
-
Central Europe
-
Germany (1)
-
-
Western Europe
-
Ardennes (1)
-
Belgium
-
Brabant Massif (1)
-
-
France
-
Ardennes France
-
Rocroi France (1)
-
-
Armorican Massif (1)
-
-
Ireland
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Mayo Ireland (1)
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United Kingdom
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Great Britain
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England
-
Gloucestershire England (1)
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Leicestershire England (1)
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Yorkshire England
-
North Yorkshire England (2)
-
-
-
Scotland
-
Ayrshire Scotland
-
Girvan Scotland (1)
-
-
Hebrides
-
Inner Hebrides
-
Isle of Skye (1)
-
-
Outer Hebrides (1)
-
-
Highland region Scotland
-
Inverness-shire Scotland
-
Isle of Skye (1)
-
-
Sutherland Scotland
-
Assynt (1)
-
Scourie Scotland (1)
-
-
-
Moine thrust zone (5)
-
Scottish Highlands
-
Grampian Highlands (1)
-
-
-
Wales (1)
-
-
-
-
-
Harris (1)
-
Highland Boundary Fault (1)
-
Lake District (1)
-
Midland Valley (6)
-
North America
-
Appalachians
-
Blue Ridge Province (2)
-
-
Canadian Shield
-
Grenville Province (2)
-
-
-
Northern Highlands (1)
-
Pacific Coast (1)
-
Pacific Ocean
-
East Pacific
-
Peru-Chile Trench (1)
-
-
North Pacific
-
Northwest Pacific
-
Yellow Sea (1)
-
-
-
West Pacific
-
Northwest Pacific
-
Yellow Sea (1)
-
-
-
-
South America
-
Amazonian Craton (1)
-
Chile (1)
-
-
Southern Uplands (1)
-
United States
-
Columbia Plateau (2)
-
Idaho
-
Custer County Idaho (1)
-
-
New Jersey
-
Hunterdon County New Jersey (1)
-
Mercer County New Jersey (1)
-
-
New York
-
Adirondack Mountains (1)
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-
North Carolina (1)
-
Oregon
-
Grant County Oregon (1)
-
-
Virginia (1)
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Washington
-
Yakima County Washington (1)
-
-
Western U.S. (1)
-
-
-
commodities
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energy sources (1)
-
metal ores
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gold ores (1)
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-
mineral deposits, genesis (1)
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petroleum (1)
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elements, isotopes
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isotope ratios (3)
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isotopes
-
radioactive isotopes
-
Ar-40/Ar-39 (1)
-
Sm-147/Nd-144 (1)
-
-
stable isotopes
-
Ar-40/Ar-39 (1)
-
Hf-177/Hf-176 (1)
-
Nd-144/Nd-143 (1)
-
Sm-147/Nd-144 (1)
-
-
-
metals
-
hafnium
-
Hf-177/Hf-176 (1)
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
Sm-147/Nd-144 (1)
-
-
samarium
-
Sm-147/Nd-144 (1)
-
-
-
-
noble gases
-
argon
-
Ar-40/Ar-39 (1)
-
-
-
-
fossils
-
Chordata
-
Vertebrata (1)
-
-
Graptolithina (1)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Ostracoda (1)
-
-
-
-
Brachiopoda (1)
-
Mollusca
-
Bivalvia (1)
-
Gastropoda (1)
-
-
Protista
-
Radiolaria (1)
-
-
-
microfossils
-
Chitinozoa (1)
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Conodonta (1)
-
-
palynomorphs
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acritarchs (2)
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Chitinozoa (1)
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miospores (1)
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-
geochronology methods
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Ar/Ar (2)
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Pb/Pb (1)
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Rb/Sr (1)
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Sm/Nd (1)
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Sr/Sr (1)
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U/Pb (10)
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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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Pliocene (1)
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-
-
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Dalradian (2)
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Mesozoic
-
Cretaceous
-
Upper Cretaceous
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Campanian (1)
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Santonian (1)
-
Senonian (1)
-
-
-
Jurassic (3)
-
Triassic
-
Upper Triassic (1)
-
-
-
Paleozoic
-
Carboniferous
-
Namurian (1)
-
-
Devonian
-
Lower Devonian (1)
-
Old Red Sandstone (2)
-
-
lower Paleozoic (4)
-
Ordovician
-
Lower Ordovician
-
Arenigian
-
Ballantrae Complex (1)
-
-
Tremadocian (1)
-
-
Middle Ordovician (1)
-
Skiddaw Slates (1)
-
-
Permian (1)
-
Silurian
-
Lower Silurian
-
Llandovery (2)
-
Wenlock (2)
-
-
Upper Silurian (1)
-
-
-
Precambrian
-
Archean (3)
-
Lewisian Complex (3)
-
Transvaal Supergroup (1)
-
upper Precambrian
-
Proterozoic
-
Lewisian (1)
-
Mesoproterozoic
-
Laxfordian (1)
-
-
Neoproterozoic
-
Moine Supergroup (3)
-
Moinian (1)
-
-
Paleoproterozoic
-
Birimian (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
anorthosite (1)
-
diabase (1)
-
gabbros
-
norite (1)
-
-
granites (4)
-
lamprophyres (1)
-
pegmatite (2)
-
ultramafics
-
peridotites
-
dunite (1)
-
-
pyroxenite (1)
-
-
-
volcanic rocks
-
basalts
-
tholeiite (1)
-
-
-
-
ophiolite (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses
-
paragneiss (2)
-
-
metaigneous rocks
-
metabasalt (1)
-
metagabbro (1)
-
metagranite (1)
-
metarhyolite (1)
-
-
metasedimentary rocks
-
paragneiss (2)
-
-
migmatites (3)
-
mylonites
-
blastomylonite (1)
-
-
quartzites (1)
-
schists
-
greenstone (1)
-
-
-
ophiolite (1)
-
turbidite (1)
-
-
minerals
-
silicates
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (9)
-
-
-
-
-
sulfides (1)
-
-
Primary terms
-
absolute age (12)
-
Africa
-
Southern Africa
-
Kaapvaal Craton (1)
-
Namibia (1)
-
South Africa
-
Bushveld Complex (1)
-
Cape fold belt (1)
-
Transvaal region (1)
-
-
-
West Africa
-
Benue Valley (1)
-
Mali (1)
-
Nigeria (1)
-
-
West African Craton (1)
-
-
Antarctica
-
Antarctic Peninsula
-
Graham Land (1)
-
-
-
Asia
-
Far East
-
Korea (1)
-
-
Middle East
-
Turkey
-
Anatolia (1)
-
-
-
-
Atlantic Ocean
-
North Atlantic
-
Faeroe-Shetland Basin (1)
-
-
-
Australasia
-
Australia
-
Arunta Block (1)
-
Northern Territory Australia (1)
-
Queensland Australia
-
Mount Isa Australia (1)
-
-
-
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia
-
Cape Breton Island (1)
-
-
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Jamaica (1)
-
-
-
-
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene (1)
-
Pliocene (1)
-
-
-
-
Chordata
-
Vertebrata (1)
-
-
continental shelf (1)
-
crust (2)
-
deformation (13)
-
earthquakes (1)
-
economic geology (1)
-
energy sources (1)
-
Europe
-
Central Europe
-
Germany (1)
-
-
Western Europe
-
Ardennes (1)
-
Belgium
-
Brabant Massif (1)
-
-
France
-
Ardennes France
-
Rocroi France (1)
-
-
Armorican Massif (1)
-
-
Ireland
-
Mayo Ireland (1)
-
-
United Kingdom
-
Great Britain
-
England
-
Gloucestershire England (1)
-
Leicestershire England (1)
-
Yorkshire England
-
North Yorkshire England (2)
-
-
-
Scotland
-
Ayrshire Scotland
-
Girvan Scotland (1)
-
-
Hebrides
-
Inner Hebrides
-
Isle of Skye (1)
-
-
Outer Hebrides (1)
-
-
Highland region Scotland
-
Inverness-shire Scotland
-
Isle of Skye (1)
-
-
Sutherland Scotland
-
Assynt (1)
-
Scourie Scotland (1)
-
-
-
Moine thrust zone (5)
-
Scottish Highlands
-
Grampian Highlands (1)
-
-
-
Wales (1)
-
-
-
-
-
faults (12)
-
folds (6)
-
foliation (5)
-
geochemistry (3)
-
geomorphology (1)
-
geosynclines (2)
-
Graptolithina (1)
-
igneous rocks
-
plutonic rocks
-
anorthosite (1)
-
diabase (1)
-
gabbros
-
norite (1)
-
-
granites (4)
-
lamprophyres (1)
-
pegmatite (2)
-
ultramafics
-
peridotites
-
dunite (1)
-
-
pyroxenite (1)
-
-
-
volcanic rocks
-
basalts
-
tholeiite (1)
-
-
-
-
intrusions (7)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Ostracoda (1)
-
-
-
-
Brachiopoda (1)
-
Mollusca
-
Bivalvia (1)
-
Gastropoda (1)
-
-
Protista
-
Radiolaria (1)
-
-
-
isotopes
-
radioactive isotopes
-
Ar-40/Ar-39 (1)
-
Sm-147/Nd-144 (1)
-
-
stable isotopes
-
Ar-40/Ar-39 (1)
-
Hf-177/Hf-176 (1)
-
Nd-144/Nd-143 (1)
-
Sm-147/Nd-144 (1)
-
-
-
lava (1)
-
lineation (3)
-
magmas (4)
-
mantle (3)
-
maps (1)
-
Mesozoic
-
Cretaceous
-
Upper Cretaceous
-
Campanian (1)
-
Santonian (1)
-
Senonian (1)
-
-
-
Jurassic (3)
-
Triassic
-
Upper Triassic (1)
-
-
-
metal ores
-
gold ores (1)
-
-
metals
-
hafnium
-
Hf-177/Hf-176 (1)
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
Sm-147/Nd-144 (1)
-
-
samarium
-
Sm-147/Nd-144 (1)
-
-
-
-
metamorphic rocks
-
gneisses
-
paragneiss (2)
-
-
metaigneous rocks
-
metabasalt (1)
-
metagabbro (1)
-
metagranite (1)
-
metarhyolite (1)
-
-
metasedimentary rocks
-
paragneiss (2)
-
-
migmatites (3)
-
mylonites
-
blastomylonite (1)
-
-
quartzites (1)
-
schists
-
greenstone (1)
-
-
-
metamorphism (12)
-
metasomatism (1)
-
mineral deposits, genesis (1)
-
noble gases
-
argon
-
Ar-40/Ar-39 (1)
-
-
-
North America
-
Appalachians
-
Blue Ridge Province (2)
-
-
Canadian Shield
-
Grenville Province (2)
-
-
-
ocean waves (1)
-
oceanography (1)
-
Pacific Coast (1)
-
Pacific Ocean
-
East Pacific
-
Peru-Chile Trench (1)
-
-
North Pacific
-
Northwest Pacific
-
Yellow Sea (1)
-
-
-
West Pacific
-
Northwest Pacific
-
Yellow Sea (1)
-
-
-
-
paleoecology (1)
-
paleogeography (4)
-
paleontology (1)
-
Paleozoic
-
Carboniferous
-
Namurian (1)
-
-
Devonian
-
Lower Devonian (1)
-
Old Red Sandstone (2)
-
-
lower Paleozoic (4)
-
Ordovician
-
Lower Ordovician
-
Arenigian
-
Ballantrae Complex (1)
-
-
Tremadocian (1)
-
-
Middle Ordovician (1)
-
Skiddaw Slates (1)
-
-
Permian (1)
-
Silurian
-
Lower Silurian
-
Llandovery (2)
-
Wenlock (2)
-
-
Upper Silurian (1)
-
-
-
palynomorphs
-
acritarchs (2)
-
Chitinozoa (1)
-
miospores (1)
-
-
petroleum (1)
-
petrology (1)
-
plate tectonics (4)
-
Precambrian
-
Archean (3)
-
Lewisian Complex (3)
-
Transvaal Supergroup (1)
-
upper Precambrian
-
Proterozoic
-
Lewisian (1)
-
Mesoproterozoic
-
Laxfordian (1)
-
-
Neoproterozoic
-
Moine Supergroup (3)
-
Moinian (1)
-
-
Paleoproterozoic
-
Birimian (1)
-
-
-
-
-
sedimentary rocks
-
bone beds (1)
-
carbonate rocks
-
limestone (2)
-
-
chemically precipitated rocks
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phosphate rocks (1)
-
-
clastic rocks
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conglomerate (1)
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graywacke (1)
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mudstone (1)
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sandstone (4)
-
siltstone (1)
-
-
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (1)
-
-
planar bedding structures
-
bedding (1)
-
laminations (1)
-
-
-
sedimentation (3)
-
sediments
-
clastic sediments
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boulders (1)
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cobbles (1)
-
-
-
shorelines (1)
-
South America
-
Amazonian Craton (1)
-
Chile (1)
-
-
stratigraphy (4)
-
structural analysis (7)
-
structural geology (5)
-
tectonics (16)
-
tectonophysics (1)
-
United States
-
Columbia Plateau (2)
-
Idaho
-
Custer County Idaho (1)
-
-
New Jersey
-
Hunterdon County New Jersey (1)
-
Mercer County New Jersey (1)
-
-
New York
-
Adirondack Mountains (1)
-
-
North Carolina (1)
-
Oregon
-
Grant County Oregon (1)
-
-
Virginia (1)
-
Washington
-
Yakima County Washington (1)
-
-
Western U.S. (1)
-
-
-
rock formations
-
Table Mountain Group (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
bone beds (1)
-
carbonate rocks
-
limestone (2)
-
-
chemically precipitated rocks
-
phosphate rocks (1)
-
-
clastic rocks
-
conglomerate (1)
-
graywacke (1)
-
mudstone (1)
-
sandstone (4)
-
siltstone (1)
-
-
-
turbidite (1)
-
-
sedimentary structures
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boudinage (1)
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (1)
-
-
planar bedding structures
-
bedding (1)
-
laminations (1)
-
-
-
stratification (1)
-
-
sediments
-
sediments
-
clastic sediments
-
boulders (1)
-
cobbles (1)
-
-
-
turbidite (1)
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
inliers
Geology of the Tabakoto gold deposit, Kédougou-Kéniéba Inlier, West African Craton, Mali Open Access
Archean–Paleoproterozoic: formation of the crystalline basement Available to Purchase
Middle Ordovician–Silurian: Midland Valley forearc basins and the Southern Uplands accretionary complex at the southern margin of Laurentia Available to Purchase
The Ordovician of France and neighbouring areas of Belgium and Germany Available to Purchase
Abstract The Ordovician successions of France and neighbouring areas of Belgium and Germany are reviewed and correlated based on international chronostratigraphic and regional biostratigraphic charts. The same three megasequences related to the rift, drift and docking of Avalonia with Baltica can be tracked in Belgium and neighbouring areas (Brabant Massif and Ardenne inliers), western (Rhenish Massif) and northeastern Germany (Rügen). The remaining investigated areas were part of Gondwana in the Ordovician. The Armorican Massif shares with the Iberian Peninsula a Furongian–Early Ordovician gap (Toledanian or Norman gap), and a continuous Mid–Late Ordovician shelf sedimentation. The Occitan Domain (Montagne Noire and Mouthoumet massifs), eastern Pyrenees and northwestern Corsica share with southwestern Sardinia continuous shelf sedimentation in the Early Ordovician, and a Mid Ordovician ‘Sardic gap’. In the Ordovician, the Maures Massif probably belonged to the same Sardo-Occitan domain. The Vosges and Schwarzwald massifs display comparable, poorly preserved Ordovician successions, suggesting affinities with the Teplá-Barrandian and/or Moldanubian zones of Central Europe.
Tectonic history of the Grenville-age Trenton Prong inlier, Central Appalachians, USA: evidence from SHRIMP U–Pb geochronology Available to Purchase
A Baltic heritage in Scotland: Basement terrane transfer during the Grenvillian orogeny Available to Purchase
Formation of Anorthositic Rocks within the Blair River Inlier of Northern Cape Breton Island, Nova Scotia (Canada) Open Access
Reply to Discussion on ‘The Mesoproterozoic Stac Fada proximal ejecta blanket, NW Scotland: constraints on crater location from field observations, anisotropy of magnetic susceptibility, petrography and geochemistry’, Journal of the Geological Society , 176, 830–846 Available to Purchase
Caledonian and Knoydartian overprinting of a Grenvillian inlier and the enclosing Morar Group rocks: structural evolution of the Precambrian Proto-Moine Nappe, Glenelg, NW Scotland Available to Purchase
East Anatolian plateau constructed over a continental basement: No evidence for the East Anatolian accretionary complex Available to Purchase
Field Study of the Positive Flower Structures of the Gombe Inlier, Upper Benue Trough, Northeastern Nigeria Available to Purchase
Discussion on ‘A Lower Palaeozoic inlier in Wharfedale, North Yorkshire, UK’. Proceedings , Vol. 59, 2013, pp. 173–176 Available to Purchase
Geomorphology and Coastal Erosion of a Quartzite Island: Hongdo in the Yellow Sea off the SW Korean Peninsula Available to Purchase
A Lower Palaeozoic inlier in Wharfedale, North Yorkshire, UK Available to Purchase
U–Pb ion-microprobe zircon geochronology from the basement inliers of eastern Graham Land, Antarctic Peninsula Available to Purchase
The structure of the Glenelg-Attadale Lewisianoid Inlier and its relationship to the Moine Thrust Zone Available to Purchase
Geochemistry of Compositionally Distinct Late Cretaceous Back-Arc Basin Lavas: Implications for the Tectonomagmatic Evolution of the Caribbean Plate Available to Purchase
Review of the Proterozoic evolution of the Grenville Province, its Adirondack outlier, and the Mesoproterozoic inliers of the Appalachians Available to Purchase
In recent years, a rapidly expanding database, especially in sensitive high-resolution ion microprobe (SHRIMP) geochronology, has led to significant advances in understanding of the Precambrian tectonic evolution of the Grenville Province, including its Adirondack outlier, and the Mesoproterozoic inliers of the Appalachians. Based upon this information, we review the geochronology and tectonic evolution of these regions and significant similarities and differences between them. Isotopic data, including Pb isotopic mapping, suggest that a complex belt of marginal arcs and orogens existed from Labrador through the Adirondacks, the midcontinent, and into the southwest during the interval ca. 1.8–1.3 Ga. Other data indicate that Mesoproterozoic inliers of the Appalachians, extending from Vermont to at least as far south as the New Jersey Highlands, are, in part, similar in composition and age to rocks in the southwestern Grenville Province. Mesoproterozoic inliers of the Appalachian Blue Ridge likewise contain some lithologies similar to northern terranes but exhibit Nd and Pb isotopic characteristics suggesting non-Laurentian, and perhaps Amazonian, affinities. Models invoking an oblique collision of eastern Laurentia with Amazonia are consistent with paleomagnetic results, and collision is inferred to have begun at ca. 1.2 Ga. The collision resulted in both the ca. 1190–1140 Ma Shawinigan orogeny and the ca. 1090–980 Ma Grenvillian orogeny, which are well represented in the Appalachians. Several investigators have proposed that some Amazonian Mesoproterozoic crust may have been tectonically transferred to Laurentia at ca. 1.2 Ga. Data that potentially support or contradict this model are presented.
Thermomagmatic evolution of Mesoproterozoic crust in the Blue Ridge of SW Virginia and NW North Carolina: Evidence from U-Pb geochronology and zircon geothermometry Available to Purchase
New geologic mapping, petrology, and U-Pb geochronology indicate that Mesoproterozoic crust near Mount Rogers consists of felsic to mafic meta-igneous rocks emplaced over 260 m.y. The oldest rocks are compositionally diverse and migmatitic, whereas younger granitoids are porphyritic to porphyroclastic. Cathodoluminescence imaging indicates that zircon from four representative units preserves textural evidence of multiple episodes of growth, including domains of igneous, metamorphic, and inherited origin. Sensitive high-resolution ion microprobe (SHRIMP) trace-element analyses indicate that metamorphic zircon is characterized by lower Th/U, higher Yb/Gd, and lower overall rare earth element (REE) concentrations than igneous zircon. SHRIMP U-Pb isotopic analyses of zircon define three episodes of magmatism: 1327 ± 7 Ma, 1180–1155 Ma, and 1061 ± 5 Ma. Crustal recycling is recorded by inherited igneous cores of 1.33–1.29 Ga age in 1161 ± 7 Ma meta-monzogranite. Overlapping ages of igneous and metamorphic crystallization indicate that plutons of ca. 1170 and 1060 Ma age were emplaced during episodes of regional heating. Local development of hornblende + plagioclase + quartz ± clinopyroxene indicates that prograde metamorphism at 1170–1145 Ma and 1060–1020 Ma reached upper-amphibolite-facies conditions, with temperatures estimated using Ti-in-zircon geothermometry at ~740 ± 40 °C during both episodes. The chemical composition of 1327 ± 7 Ma orthogranofels from migmatite preserves the first evidence of arc-generated rocks in the Blue Ridge, indicating a subduction-related environment that may have been comparable to similar-age systems in inliers of the Northern Appalachians and the Composite Arc belt of Canada. Granitic magmatism at 1180–1155 Ma and ca. 1060 Ma near Mount Rogers was contemporaneous with anorthosite-mangerite-charnockite-granite (AMCG) plutonism in the Northern Appalachian inliers and Canadian Grenville Province. Metamorphism at ca. 1160 and 1060 Ma correlates temporally with the Shawinigan orogeny and Ottawan phase of the Grenvillian orogeny, respectively, suggesting that the Blue Ridge was part of Rodinia dating back to ca. 1180 Ma.