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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Kenya (1)
-
Tanzania (1)
-
-
Limpopo Belt (3)
-
Madagascar (1)
-
Mozambique Belt (1)
-
North Africa
-
Algeria (1)
-
-
Southern Africa
-
Kaapvaal Craton (2)
-
Namaqualand (1)
-
Namibia
-
Damara Belt (1)
-
Kaoko Belt (1)
-
-
South Africa
-
Cape Province region (1)
-
-
Zimbabwe (2)
-
-
Zimbabwe Craton (1)
-
-
Antarctica
-
East Antarctica (2)
-
Larsemann Hills (1)
-
-
Arctic region
-
Greenland (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (1)
-
Mongolian Altai (2)
-
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Baikal region (1)
-
Buryat Russian Federation (1)
-
Central Asia
-
Kazakhstan
-
Kokchetav Kazakhstan
-
Kokchetav Massif (1)
-
-
-
-
Far East
-
China
-
Xizang China (1)
-
-
Japan
-
Honshu
-
Abukuma Mountains (1)
-
-
-
Mongolia
-
Mongolian Altai (2)
-
-
-
Himalayas
-
High Himalayan Crystallines (2)
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Indian Peninsula
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India
-
Ghats
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Eastern Ghats (2)
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-
Jharkhand India (1)
-
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Jammu and Kashmir
-
Ladakh (1)
-
-
Kohistan (1)
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Nepal (4)
-
-
Irkutsk Russian Federation (1)
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Krasnoyarsk Russian Federation (1)
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Lake Baikal (2)
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Middle East
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Iran (1)
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Turkey (1)
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Siberia (2)
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Siberian Platform
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Yenisei Ridge (2)
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Transbaikalia (1)
-
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Australasia
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Australia
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Queensland Australia
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Mount Isa Inlier (1)
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South Australia
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Mount Lofty Ranges (1)
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Black Hills (4)
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Canada
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Eastern Canada
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Maritime Provinces
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Nova Scotia (2)
-
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Meguma Terrane (1)
-
Newfoundland and Labrador
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Labrador (3)
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Newfoundland (3)
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Ontario
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Thunder Bay District Ontario
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Manitouwadge Ontario (1)
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Quebec (2)
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Western Canada
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Athabasca Basin (1)
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British Columbia (6)
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Canadian Cordillera (1)
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Manitoba
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Northwest Territories (1)
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Saskatchewan (1)
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Commonwealth of Independent States
-
Kazakhstan
-
Kokchetav Kazakhstan
-
Kokchetav Massif (1)
-
-
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Russian Federation
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Baikal region (1)
-
Buryat Russian Federation (1)
-
Irkutsk Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
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Lake Baikal (2)
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Siberian Platform
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Transbaikalia (1)
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Europe
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Alps (1)
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Central Europe
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Czech Republic
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Moravia (1)
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Germany
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Pyrenees (1)
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Southern Europe
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Greece
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Greek Thrace
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Iberian Peninsula
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Spain
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Italy
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Thrace
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Western Europe
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France
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Brittany (2)
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Ireland
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Donegal Ireland
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Scandinavia
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Norway (2)
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Western Gneiss region (1)
-
-
United Kingdom
-
Great Britain
-
Scotland
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Aberdeenshire Scotland
-
Huntly Scotland (1)
-
-
Scottish Highlands
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Grampian Highlands (2)
-
-
-
-
Northern Ireland
-
Antrim Northern Ireland (1)
-
-
-
-
-
Front Range (2)
-
Highland Boundary Fault (1)
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Indian Ocean Islands
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Madagascar (1)
-
-
North America
-
Appalachians
-
Blue Ridge Province (1)
-
Piedmont
-
Inner Piedmont (1)
-
-
Southern Appalachians (1)
-
-
Canadian Shield
-
Grenville Province (1)
-
Superior Province
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Abitibi Belt (1)
-
-
-
Grenville Front (1)
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North American Cordillera
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Canadian Cordillera (1)
-
-
Rocky Mountains
-
U. S. Rocky Mountains
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Sangre de Cristo Mountains (2)
-
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Shuswap Complex (1)
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Sierra Nevada (1)
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South America
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Andes (1)
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Brazil
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Peru (2)
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Twin Lakes (1)
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United States
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Brevard Zone (1)
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California
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Inyo County California
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Inyo Mountains (1)
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Charlotte Belt (1)
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Colorado
-
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Connecticut (2)
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Great Smoky Fault (1)
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Idaho (1)
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Kansas
-
Riley County Kansas (1)
-
-
Maine
-
Franklin County Maine (5)
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Massachusetts
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-
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Montana
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Madison County Montana (1)
-
-
New England (1)
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New Hampshire
-
Grafton County New Hampshire (1)
-
-
New Mexico
-
Bernalillo County New Mexico (1)
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Mora County New Mexico (1)
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Picuris Range (2)
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Sandia Mountains (1)
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Taos County New Mexico (1)
-
-
New York
-
Benson Mines (1)
-
Dutchess County New York (1)
-
Westchester County New York (2)
-
-
North Carolina
-
Mecklenburg County North Carolina (1)
-
-
South Carolina (1)
-
South Dakota
-
Custer County South Dakota (1)
-
Harney Peak Granite (2)
-
Pennington County South Dakota (1)
-
-
Texas
-
Llano Uplift (1)
-
-
U. S. Rocky Mountains
-
Sangre de Cristo Mountains (2)
-
-
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Wilson Lake (1)
-
-
commodities
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ceramic materials (1)
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corundum deposits (1)
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gems (1)
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industrial minerals (2)
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metal ores
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aluminum ores (1)
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iron ores (1)
-
lead ores (1)
-
lead-zinc deposits (1)
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silver ores (1)
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uranium ores (1)
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zinc ores (2)
-
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mineral deposits, genesis (6)
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nonmetal deposits (1)
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ruby (1)
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sillimanite deposits (1)
-
-
elements, isotopes
-
boron (3)
-
chemical ratios (1)
-
halogens
-
fluorine (1)
-
-
isotope ratios (6)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
-
stable isotopes
-
Hf-177/Hf-176 (1)
-
Nd-144/Nd-143 (2)
-
O-18/O-16 (3)
-
Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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S-34/S-32 (2)
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Sr-87/Sr-86 (2)
-
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Lu/Hf (1)
-
metals
-
actinides
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thorium (1)
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uranium (1)
-
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alkali metals
-
lithium (1)
-
-
alkaline earth metals
-
calcium (2)
-
magnesium (2)
-
strontium
-
Sr-87/Sr-86 (2)
-
-
-
aluminum (4)
-
chromium (1)
-
hafnium
-
Hf-177/Hf-176 (1)
-
-
iron
-
ferric iron (2)
-
-
lead
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
-
manganese (2)
-
niobium (1)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (2)
-
-
scandium (1)
-
yttrium (2)
-
-
tantalum (1)
-
titanium (2)
-
vanadium (1)
-
zirconium (2)
-
-
noble gases
-
argon (1)
-
-
oxygen
-
O-18/O-16 (3)
-
-
phosphorus (1)
-
silicon (2)
-
sulfur
-
S-34/S-32 (2)
-
-
-
fossils
-
Invertebrata
-
Brachiopoda (1)
-
-
-
geochronology methods
-
Ar/Ar (5)
-
fission-track dating (1)
-
K/Ar (1)
-
Lu/Hf (1)
-
Pb/Pb (2)
-
Rb/Sr (4)
-
thermochronology (1)
-
U/Pb (13)
-
U/Th/Pb (7)
-
-
geologic age
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene
-
lower Miocene (1)
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middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene
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Cimmerian (1)
-
-
-
Paleogene
-
Eocene (2)
-
Oligocene
-
lower Oligocene (1)
-
upper Oligocene (1)
-
-
Paleocene (1)
-
-
-
-
Dalradian (5)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
-
-
Jurassic (2)
-
Triassic (3)
-
-
Moldanubian (1)
-
Paleozoic
-
Cambrian
-
Acadian (2)
-
Lower Cambrian (1)
-
Middle Cambrian (1)
-
Upper Cambrian
-
Goldenville Formation (1)
-
-
-
Carboniferous (2)
-
Devonian
-
Lower Devonian
-
Littleton Formation (2)
-
-
Upper Devonian (1)
-
-
lower Paleozoic (2)
-
Ordovician
-
Lower Ordovician
-
Tremadocian
-
Halifax Formation (1)
-
-
-
Middle Ordovician
-
Ammonoosuc Volcanics (1)
-
Partridge Formation (1)
-
-
-
Permian
-
Lower Permian (1)
-
-
Rangeley Formation (1)
-
Silurian
-
Sangerville Formation (1)
-
-
upper Paleozoic
-
Dwyka Formation (1)
-
-
-
Precambrian
-
Archean
-
J-M Reef (1)
-
Neoarchean (1)
-
-
upper Precambrian
-
Proterozoic
-
Damara System (1)
-
Mesoproterozoic (3)
-
Neoproterozoic
-
Riphean (1)
-
Vendian (1)
-
-
Ortega Group (2)
-
Paleoproterozoic
-
Wollaston Group (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
kimberlite (1)
-
plutonic rocks
-
anorthosite (1)
-
diorites
-
quartz diorites (1)
-
tonalite (1)
-
-
granites
-
biotite granite (1)
-
leucogranite (2)
-
muscovite granite (1)
-
S-type granites (2)
-
two-mica granite (1)
-
-
granodiorites (1)
-
pegmatite (10)
-
syenites (1)
-
ultramafics (1)
-
urtite (1)
-
-
volcanic rocks
-
basalts (1)
-
dacites (2)
-
glasses (1)
-
pyroclastics
-
ash-flow tuff (1)
-
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites (4)
-
garnetite (1)
-
gneisses
-
augen gneiss (1)
-
biotite gneiss (2)
-
granite gneiss (2)
-
orthogneiss (1)
-
paragneiss (2)
-
sillimanite gneiss (1)
-
-
granulites (16)
-
hornfels (1)
-
impactites
-
impact breccia
-
suevite (2)
-
-
-
marbles
-
calciphyre (1)
-
-
metacarbonate rocks (1)
-
metaigneous rocks
-
metabasalt (1)
-
metabasite (3)
-
metagabbro (1)
-
-
metasedimentary rocks
-
metapelite (16)
-
paragneiss (2)
-
-
metasomatic rocks (2)
-
metavolcanic rocks (1)
-
migmatites
-
anatexite (1)
-
-
mylonites
-
blastomylonite (1)
-
-
quartzites (5)
-
schists
-
biotite schist (1)
-
chlorite schist (1)
-
greenschist (1)
-
muscovite schist (1)
-
tourmalinite (1)
-
-
slates (4)
-
-
-
minerals
-
alloys (2)
-
borates (1)
-
carbonates
-
aragonite (1)
-
calcite (1)
-
dolomite (1)
-
-
halides
-
chlorides
-
halite (1)
-
-
-
minerals (41)
-
native elements
-
diamond (2)
-
graphite (6)
-
-
oxides
-
anatase (1)
-
baddeleyite (1)
-
cassiterite (1)
-
corundum (7)
-
gahnite (1)
-
hematite (2)
-
hercynite (1)
-
ilmenite (7)
-
iron oxides (1)
-
magnetite (1)
-
niobates
-
columbite (2)
-
euxenite (1)
-
-
perovskite (1)
-
pseudobrookite (1)
-
rutile (8)
-
sapphire (1)
-
spinel (7)
-
spinel group (2)
-
tantalates
-
euxenite (1)
-
microlite (1)
-
tantalite (1)
-
-
titanium oxides (2)
-
-
phosphates
-
apatite (3)
-
fluorapatite (2)
-
monazite (9)
-
xenotime (3)
-
-
silicates
-
aluminosilicates (19)
-
borosilicates (3)
-
chain silicates
-
aenigmatite group
-
sapphirine (6)
-
-
amphibole group
-
clinoamphibole
-
cummingtonite (1)
-
hornblende (2)
-
kaersutite (1)
-
pargasite (1)
-
-
orthoamphibole
-
anthophyllite (1)
-
gedrite (1)
-
-
-
pyroxene group
-
clinopyroxene
-
diopside (1)
-
-
orthopyroxene
-
enstatite (2)
-
hypersthene (1)
-
-
-
wollastonite group
-
wollastonite (1)
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (15)
-
microcline (2)
-
orthoclase (1)
-
perthite (3)
-
sanidine (2)
-
-
plagioclase
-
albite (1)
-
anorthite (1)
-
-
-
leucite (1)
-
nepheline group
-
nepheline (2)
-
-
silica minerals
-
coesite (2)
-
cristobalite (1)
-
quartz
-
smoky quartz (1)
-
-
stishovite (1)
-
tridymite (1)
-
-
-
orthosilicates
-
nesosilicates
-
andalusite (47)
-
chloritoid (4)
-
ellenbergerite (1)
-
garnet group
-
almandine (3)
-
grossular (1)
-
pyrope (3)
-
spessartine (1)
-
-
grandidierite (2)
-
kyanite (51)
-
mullite (10)
-
olivine group
-
forsterite (1)
-
-
sillimanite (181)
-
staurolite (23)
-
titanite group
-
titanite (2)
-
-
zircon group
-
zircon (12)
-
-
-
sorosilicates
-
kornerupine (1)
-
melilite group
-
gehlenite (2)
-
-
-
-
ring silicates
-
beryl (1)
-
cordierite (23)
-
milarite group
-
osumilite (1)
-
-
tourmaline group
-
dravite (1)
-
foitite (1)
-
schorl (1)
-
-
-
sheet silicates
-
chlorite group
-
chlorite (4)
-
-
clay minerals
-
kaolinite (2)
-
-
margarite (1)
-
mica group
-
biotite (23)
-
muscovite (25)
-
paragonite (1)
-
phlogopite (1)
-
-
sericite (1)
-
-
-
sulfates
-
natroalunite (2)
-
-
sulfides (3)
-
-
Primary terms
-
absolute age (25)
-
Africa
-
East Africa
-
Kenya (1)
-
Tanzania (1)
-
-
Limpopo Belt (3)
-
Madagascar (1)
-
Mozambique Belt (1)
-
North Africa
-
Algeria (1)
-
-
Southern Africa
-
Kaapvaal Craton (2)
-
Namaqualand (1)
-
Namibia
-
Damara Belt (1)
-
Kaoko Belt (1)
-
-
South Africa
-
Cape Province region (1)
-
-
Zimbabwe (2)
-
-
Zimbabwe Craton (1)
-
-
Antarctica
-
East Antarctica (2)
-
Larsemann Hills (1)
-
-
Arctic region
-
Greenland (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (1)
-
Mongolian Altai (2)
-
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Baikal region (1)
-
Buryat Russian Federation (1)
-
Central Asia
-
Kazakhstan
-
Kokchetav Kazakhstan
-
Kokchetav Massif (1)
-
-
-
-
Far East
-
China
-
Xizang China (1)
-
-
Japan
-
Honshu
-
Abukuma Mountains (1)
-
-
-
Mongolia
-
Mongolian Altai (2)
-
-
-
Himalayas
-
High Himalayan Crystallines (2)
-
-
Indian Peninsula
-
India
-
Ghats
-
Eastern Ghats (2)
-
-
Jharkhand India (1)
-
-
Jammu and Kashmir
-
Ladakh (1)
-
-
Kohistan (1)
-
Nepal (4)
-
-
Irkutsk Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
-
Lake Baikal (2)
-
Middle East
-
Iran (1)
-
Turkey (1)
-
-
Siberia (2)
-
Siberian Platform
-
Yenisei Ridge (2)
-
-
Transbaikalia (1)
-
-
Australasia
-
Australia
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sillimanite
Major-element geochemistry of pelites
150 Myr of Episodic Metamorphism Recorded in the Yukon-Tanana Terrane, Northern Canadian Cordillera: Evidence from Monazite and Xenotime Petrochronology
Stages of Formation of the South Altai Metamorphic Belt (Central Asia)
Decrypting the polymetamorphic record of the Himalaya
The influence of microscale lithological layering and fluid availability on the metamorphic development of garnet and zircon: insights into dissolution–reprecipitation processes
Metamorphism of the Buchan type-area, NE Scotland and its relation to the adjacent Barrovian domain
Mesozoic compressional to extensional tectonics in the Central East Iranian Microcontinent: evidence from the Boneh Shurow metamorphic core complex
Formation of metasomatic tourmalinites in reduced schists during the Black Hills Orogeny, South Dakota
The origin of Ti-oxide minerals below and within the eastern Athabasca Basin, Canada
Lithostratigraphy of the Copperton Formation, Areachap Group
Prograde polyphase regional metamorphism of pelitic rocks, NW of Jamshedpur, eastern India: constraints from textural relationship, pseudosection modelling and geothermobarometry
Abstract Early Oligocene partial melting and prolonged low-pressure–low-temperature (low-P/T) metamorphism were investigated in migmatites and orthogneisses from the upper High Himalaya Crystalline Sequence (HHCS) in the far east of Nepal. The migmatites were formed by biotite dehydration melting at c. 800°C from 33 to 25 Ma. Cordierite was only produced at shallow crustal levels at pressures <6 kbar. After Early Oligocene partial melting, the low-P/T metamorphism continued until 17 Ma during exhumation of the cordierite-bearing migmatites. Early Oligocene biotite dehydration melting in the upper HHCS occurred at different times and locations from the Early Miocene muscovite dehydration melting in the underlying HHCS and the metamorphic discontinuity was accompanied by thrusting of the High Himalayan Discontinuity at c. 27–19 Ma. Pervasive partial melting and prolonged low-P/T metamorphism in the upper HHCS is more compatible with a lateral southwards channel flow of the upper HHCS along the High Himalayan Discontinuity, whereas current channel flow models explaining the exhumation of the HHCS as driven only by the coupled activity of the Main Central Thrust and South Tibetan Detachment have faced difficulties in explaining the timing of the low-P/T metamorphism observed in the upper HHCS.
High-temperature structural change and microtexture formation of sillimanite and its phase relation with mullite
Crystallization sequences of coexisting andalusite, kyanite, and sillimanite, and a report on a new locality: Lesjaverk, Norway
Mapping the distribution of melt during anatexis at the source area of crustal granites by synchrotron μ-XRF
High-pressure granulite facies metamorphism (∼1.8 GPa) revealed in silica-undersaturated garnet-spinel-corundum gneiss, Central Maine Terrane, Connecticut, U.S.A.
Determination of Al/Si order in sillimanite by high angular resolution electron channeling X-ray spectroscopy, and implications for determining peak temperatures of sillimanite
ABSTRACT The southern Appalachian orogen is a Paleozoic accretionary-collisional orogen that formed as the result of three Paleozoic orogenies, Taconic, Acadian and Neoacadian, and Alleghanian orogenies. The Blue Ridge–Piedmont megathrust sheet exposes various crystalline terranes of the Blue Ridge and Inner Piedmont that record the different effects of these orogenies. The western Blue Ridge is the Neoproterozoic to Ordovician Laurentian margin. Constructed on Mesoproterozoic basement, 1.2–1.0 Ga, the western Blue Ridge transitions from two rifting events at ca. 750 Ma and ca. 565 Ma to an Early Cambrian passive margin and then carbonate bank. The Hayesville fault marks the Taconic suture and separates the western Blue Ridge from distal peri-Laurentian terranes of the central and eastern Blue Ridge, which are the Cartoogechaye, Cowrock, Dahlonega gold belt, and Tugaloo terranes. The central and eastern Blue Ridge terranes are dominantly clastic in composition, intruded by Ordovician to Mississippian granitoids, and contain ultramafic and mafic rocks, suggesting deposition on oceanic crust. These terranes accreted to the western Blue Ridge during the Taconic orogeny at 462–448 Ma, resulting in metamorphism dated with SHRIMP (sensitive high-resolution ion microprobe) U-Pb ages of metamorphic zircon. The Inner Piedmont, which is separated from the Blue Ridge by the Brevard fault zone, experienced upper amphibolite, sillimanite I and higher-grade metamorphism during the Acadian and Neoacadian orogenies, 395–345 Ma. These events also affected the eastern Blue Ridge, and parts of the western Blue Ridge. The Acadian and Neoacadian orogeny is the result of the oblique collision and accretion of the peri-Gondwanan Carolina superterrane overriding the Inner Piedmont. During this collision, the Inner Piedmont was a forced mid-crustal orogenic channel that flowed NW-, W-, and SW-directed from underneath the Carolina superterrane. The Alleghanian orogeny thrust these terranes northwestward as part of the Blue Ridge–Piedmont megathrust sheet during the collision of Gondwana (Africa) and the formation of Pangea.