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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Zambia (1)
-
-
North Africa
-
Algeria
-
Ahaggar (1)
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-
Morocco (1)
-
-
Zambezi Valley (1)
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Andros Island (1)
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Antarctica
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Victoria Land (1)
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Asia
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Altai Mountains
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Gorny Altai (2)
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Altai Russian Federation
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Gorny Altai (2)
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Arabian Peninsula
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Oman (1)
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Central Asia
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Kazakhstan
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Kokchetav Kazakhstan
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Kokchetav Massif (1)
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Far East
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China
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Dabie Mountains (4)
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Gansu China (1)
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Jiangsu China (1)
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Liaoning China (1)
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Qilian Mountains (1)
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Qinghai China (1)
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Sulu Terrane (3)
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Xizang China
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Lhasa Block (2)
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Japan
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Honshu
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Kii Peninsula (1)
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Ryukyu Islands (1)
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Korea
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South Korea (1)
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Sino-Korean Platform (1)
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Himalayas
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Indian Peninsula
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Turkey
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Sayan
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Tibetan Plateau (2)
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Atlantic Ocean
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Australasia
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Australia
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Canada
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Ontario
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Central America
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Guatemala
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Motagua Fault (2)
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Coast Ranges (1)
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Commonwealth of Independent States
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Kazakhstan
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Russian Federation
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Ufaley Russian Federation (1)
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Maksyutov Complex (2)
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Urals
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Cordillera de la Costa (1)
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Europe
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Greece
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Italy
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Variscides (4)
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France
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Mediterranean region
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Cyclades
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Tinos (1)
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Mediterranean Sea
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Aegean Sea (4)
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Monte Rosa (1)
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North America
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commodities
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clay deposits (1)
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elements, isotopes
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chemical ratios (2)
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hydrogen
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isotope ratios (5)
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geologic age
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Cenozoic
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Oligocene (3)
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Mesozoic
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Upper Cretaceous
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Franciscan Complex (3)
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middle Liassic (1)
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Galice Formation (1)
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Paleozoic
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Carboniferous
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Mississippian (2)
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Upper Carboniferous
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Devonian
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Upper Devonian (1)
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lower Paleozoic (1)
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middle Paleozoic (1)
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Ordovician
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Permian (2)
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Precambrian
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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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igneous rocks
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igneous rocks
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carbonatites (1)
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pegmatite (3)
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ultramafics
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spinel lherzolite (1)
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pyroxenite (1)
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volcanic rocks
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basalts
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alkali basalts (1)
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mid-ocean ridge basalts (6)
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tholeiitic basalt (1)
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glasses
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pyroclastics (2)
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trachytes (1)
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ophiolite (4)
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volcanic ash (1)
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metamorphic rocks
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amphibolites (1)
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muscovite schist (1)
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slates (3)
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ophiolite (4)
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minerals
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carbonates
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magnesite (2)
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halides
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fluorides
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minerals (17)
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native elements
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diamond
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oxides
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rutile (5)
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phosphates
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apatite (6)
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silicates
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chain silicates
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riebeckite (1)
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-
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carpholite (1)
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leucosphenite (1)
-
pyroxene group
-
clinopyroxene
-
diopside (1)
-
jadeite (4)
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omphacite (11)
-
-
orthopyroxene
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enstatite (1)
-
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (2)
-
-
plagioclase
-
albite (1)
-
-
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silica minerals
-
coesite (9)
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quartz (5)
-
-
-
magnesian silicates (2)
-
orthosilicates
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nesosilicates
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andalusite (1)
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chloritoid (4)
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clinohumite (1)
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ellenbergerite (1)
-
garnet group
-
grossular (2)
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pyrope (4)
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spessartine (1)
-
-
kyanite (8)
-
olivine group
-
olivine (1)
-
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staurolite (4)
-
titanite group
-
titanite (4)
-
-
topaz (1)
-
zircon group
-
zircon (9)
-
-
-
sorosilicates
-
epidote group
-
allanite (1)
-
clinozoisite (3)
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epidote (5)
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zoisite (3)
-
-
lawsonite (6)
-
pumpellyite group
-
pumpellyite (1)
-
-
-
-
ring silicates
-
beryl (1)
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cordierite (1)
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tourmaline group (2)
-
-
sheet silicates
-
chlorite group
-
chlorite (9)
-
sudoite (2)
-
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clay minerals
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beidellite (1)
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dickite (3)
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kaolinite (4)
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montmorillonite (1)
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clintonite (1)
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illite (7)
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margarite (4)
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mica group
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annite (3)
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biotite (14)
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celadonite (9)
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glauconite (3)
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lepidolite (3)
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muscovite (33)
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paragonite (13)
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phengite (151)
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phlogopite (4)
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polylithionite (1)
-
zinnwaldite (1)
-
-
palygorskite (1)
-
pyrophyllite (3)
-
talc (3)
-
-
-
sulfates
-
anhydrite (1)
-
barite (1)
-
-
sulfides
-
molybdenite (1)
-
pyrite (1)
-
-
-
Primary terms
-
absolute age (40)
-
Africa
-
East Africa
-
Zambia (1)
-
-
North Africa
-
Algeria
-
Ahaggar (1)
-
-
Morocco (1)
-
-
Zambezi Valley (1)
-
-
Antarctica
-
Victoria Land (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (2)
-
-
Altai Russian Federation
-
Gorny Altai (2)
-
-
Arabian Peninsula
-
Oman (1)
-
-
Central Asia
-
Kazakhstan
-
Kokchetav Kazakhstan
-
Kokchetav Massif (1)
-
-
-
-
Far East
-
China
-
Dabie Mountains (4)
-
Gansu China (1)
-
Jiangsu China (1)
-
Liaoning China (1)
-
Qilian Mountains (1)
-
Qinghai China (1)
-
Sulu Terrane (3)
-
Xizang China
-
Lhasa Block (2)
-
-
-
Japan
-
Honshu
-
Kii Peninsula (1)
-
-
Ryukyu Islands (1)
-
-
Korea
-
South Korea (1)
-
-
Sino-Korean Platform (1)
-
-
Himalayas
-
High Himalayan Crystallines (1)
-
-
Indian Peninsula
-
Pakistan (1)
-
-
Indus-Yarlung Zangbo suture zone (2)
-
Magnitogorsk Russian Federation (1)
-
Middle East
-
Turkey
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Anatolia (1)
-
Pontic Mountains (1)
-
Sea of Marmara region (1)
-
-
-
Sayan
-
Western Sayan (1)
-
-
Tibetan Plateau (2)
-
Tien Shan (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Blake Plateau (1)
-
-
-
Australasia
-
Australia
-
Queensland Australia (1)
-
South Australia
-
Olympic Dam Deposit (1)
-
-
Tasmania Australia (1)
-
-
New Zealand
-
Otago New Zealand (1)
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Otago Schist (1)
-
-
-
boron
-
B-11/B-10 (2)
-
-
Canada
-
Eastern Canada
-
Ontario
-
Hastings County Ontario
-
Bancroft Ontario (1)
-
-
-
-
Stikinia Terrane (1)
-
Western Canada
-
British Columbia (1)
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Canadian Cordillera (2)
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Yukon Territory (1)
-
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Whitehorse Trough (1)
-
-
Caribbean region
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West Indies
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Antilles
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Greater Antilles (1)
-
-
-
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene
-
lower Miocene (2)
-
-
-
Paleogene
-
Eocene
-
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phengite
Scroll-like and platy molybdenite-3 R from the Ufaley metamorphic block, South Urals: EBSD, XRD, SEM, EPMA and ICP-MS study
Boninitic blueschists record subduction initiation and subsequent accretion of an arc–forearc in the northeast Proto-Tethys Ocean
Partial melting and P-T evolution of eclogite-facies metapelitic migmatites from the Egere terrane (Central Hoggar, South Algeria)
Effect of water on carbonate-silicate liquid immiscibility in the system KAlSi 3 O 8 -CaMgSi 2 O 6 -NaAlSi 2 O 6 -CaMg(CO 3 ) 2 at 6 GPa: Implications for diamond-forming melts
Metamorphic Temperatures and Pressures across the Eastern Franciscan: Implications for Underplating and Exhumation
The distribution and abundance of halogens in eclogites: An in situ SIMS perspective of the Raspas Complex (Ecuador)
Deformation along the roof of a fossil subduction interface in the transition zone below seismogenic coupling: The Austroalpine case and new insights from the Malenco Massif (Central Alps)
Abstract We conducted 39 Ar diffusion experiments using potassium feldspar from the South Cyclades Shear Zone on Ios, in the Cyclades, Aegean Sea, Greece. Irradiated samples were step-heated in an ultra-high-vacuum resistance furnace attached to a mass spectrometer, thus also allowing 40 Ar/ 39 Ar geochronology. Conjoint inversion of these datasets allowed estimation of the relevant diffusion parameters, which were then used to forward model the effect of arbitrary temperature–time histories. Simulations used Monte Carlo methods to improve approximations to the observed age spectra. Two periods of rapid cooling could be inferred. The South Cyclades Shear Zone commenced operation during or shortly after the Eocene–Oligocene transition. Episodes of south-directed movement continued into Early Miocene time, however, with the footwall still hot enough to cause biotite ± garnet metamorphic mineral growth at the base of the overlying, already substantially exhumed, eclogite–blueschist unit. Since its footwall continued to cool, the South Cyclades Shear Zone was an extensional shear zone during both episodes of its operation.
A short, sharp pulse of potassium-rich volcanism during continental collision and subduction
Anatexis of high- T eclogites in the Dabie orogen triggered by exhumation and post-orogenic collapse
Structural factors affecting the crystal-chemical variability in Al-rich K-dioctahedral 2 M 1 micas
Geochemical characteristics of lawsonite blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean potassium-rich magmatism
Neocrystallization of clay minerals in the Alhama de Murcia Fault (southeast Spain): implications for fault mechanics
The metamorphic evolution and tectonic significance of the Sumdo HP–UHP metamorphic terrane, central-south Lhasa Block, Tibet
Abstract The Lhasa terrane, forming one of the main tectonic components of the Himalayan–Tibetan orogen, has received a lot of attention as it records multiple episodes of plate spreading, subduction and collision within the realm of the Paleo-Tethys Ocean. A review of the mineralogical, petrological, geochemical and geochronological data of eclogites, associated blueschists and garnet-bearing mica schists from the Sumdo high- and ultrahigh-pressure metamorphic (HP/UHP) complex in the central/southern part of the Lhasa terrane, is present here so that the origin and tectono-metamorphic evolution of this important suture can be deduced. By re-evaluating the original published P – T conditions for the metamorphic rocks of the Sumdo Complex, we consider that the Sumdo Complex has experienced low temperature HP/UHP metamorphic conditions, characteristic of fast subduction (and exhumation) in a typical oceanic subduction zone setting. The original wide spread in the maximal peak P – T conditions could be reduced in size due to thus far unknown inconsistencies in the usage of applied geothermobarometric techniques. The remaining spread in the maximal P – T conditions ( c. 200°C/10 kbar) of the HP/UHP regions can be explained by a mechanism that the rocks from individual tectonic slices were subducted to different depths and followed by juxtaposition on their way back to the surface. A re-consideration of the isotopic ages of eclogites from the Sumdo Complex demonstrates that the opening of the Paleo-Tethys Ocean, located in between the two major components of the Lhasa terrane, was initiated prior to c. 280 Ma and the eclogite facies metamorphism is likely to be of late Permian ( c. 260 Ma) to early Triassic age (245–225 Ma), recording different ages of subduction from individual slices of the oceanic crust. The closure of the Paleo-Tethys Ocean resulted, no earlier than 210 Ma, in the final collision between the northern and southern Lhasa blocks. This final collision event may have been triggered by the initial subduction of the Bangong–Nujiang Tethys Ocean in the north.