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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
Cape Verde Islands (2)
-
East Africa
-
Kenya (1)
-
Sudan (2)
-
Tanzania
-
Kilimanjaro (1)
-
-
-
Madagascar (2)
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Middle Atlas (1)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
Middle Atlas (1)
-
-
Rif (1)
-
-
-
West Africa
-
Niger (1)
-
Senegal (1)
-
-
-
Antarctica
-
Antarctic ice sheet
-
West Antarctic ice sheet (1)
-
-
Antarctic Peninsula (1)
-
East Antarctica (1)
-
Ellsworth Land (1)
-
Marie Byrd Land (1)
-
Transantarctic Mountains (1)
-
Victoria Land (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (1)
-
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Arabian Peninsula
-
Oman
-
Oman Mountains (1)
-
-
Saudi Arabia (2)
-
-
Baikal region (1)
-
Buryat Russian Federation
-
Vitim Plateau (1)
-
-
Chukotka Russian Federation
-
Chukchi Peninsula (1)
-
-
Euphrates River (1)
-
Far East
-
China
-
Anhui China (1)
-
Hainan China (1)
-
Jiangxi China (1)
-
Shandong China
-
Shandong Peninsula (1)
-
-
-
Indonesia
-
Sunda Arc (1)
-
-
-
Khakasiya Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
-
Middle East
-
Israel
-
Makhtesh Ramon (1)
-
-
Syria (1)
-
Turkey
-
Amanos Mountains (1)
-
East Anatolian Fault (1)
-
-
-
Sayan
-
Eastern Sayan (1)
-
-
Siberian Platform
-
Aldan Shield (2)
-
-
Transbaikalia (4)
-
Tuva Russian Federation (1)
-
Udokan Mountains (1)
-
Zabaykalskiy Russian Federation (2)
-
-
Atlantic Ocean
-
North Atlantic
-
North Sea (1)
-
-
-
Atlantic Ocean Islands
-
Azores
-
Sao Miguel Island (2)
-
-
Canary Islands
-
Grand Canary (1)
-
Tenerife (1)
-
-
Cape Verde Islands (2)
-
-
Atlantic region (1)
-
Australasia
-
Australia
-
Victoria Australia (1)
-
-
New Zealand
-
Otago New Zealand
-
Dunedin New Zealand (1)
-
Kakanui (1)
-
-
Southland New Zealand (1)
-
-
-
Bathurst Island (1)
-
Canada
-
Arctic Archipelago (1)
-
Eastern Canada
-
Quebec
-
Monteregian Hills (2)
-
-
-
Western Canada
-
British Columbia
-
Rossland British Columbia (1)
-
-
Canadian Cordillera (2)
-
Northwest Territories (1)
-
Yukon Territory (2)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Lesser Antilles
-
Grenada (1)
-
-
-
-
-
Central America
-
Costa Rica (1)
-
Guatemala (1)
-
-
Commonwealth of Independent States
-
Russian Federation
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Baikal region (1)
-
Buryat Russian Federation
-
Vitim Plateau (1)
-
-
Chukotka Russian Federation
-
Chukchi Peninsula (1)
-
-
Khakasiya Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
-
Siberian Platform
-
Aldan Shield (2)
-
-
Transbaikalia (4)
-
Tuva Russian Federation (1)
-
Udokan Mountains (1)
-
Zabaykalskiy Russian Federation (2)
-
-
-
East Pacific Ocean Islands
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
-
Espanola Basin (1)
-
Europe
-
Adriatic region (1)
-
Central Europe
-
Austria
-
Styria Austria (1)
-
-
Bohemian Massif (1)
-
Germany
-
Eifel (1)
-
Rhineland-Palatinate Germany
-
Laacher See (2)
-
-
-
Hungary (1)
-
Slovakia (1)
-
-
Rhenish Schiefergebirge
-
Eifel (1)
-
-
Southern Europe
-
Italy
-
Latium Italy (1)
-
Sicily Italy (1)
-
Veneto Italy (2)
-
-
-
Western Europe
-
France
-
Burgundy (1)
-
Cantal France (1)
-
Central Massif (1)
-
Languedoc (1)
-
Puy-de-Dome France
-
Mont-Dore France (1)
-
-
Saone-et-Loire France (1)
-
-
United Kingdom
-
Great Britain
-
England
-
East Midlands (1)
-
West Midlands (1)
-
-
Scotland
-
East Lothian Scotland (1)
-
-
-
-
-
-
Fuego (1)
-
Grand Canyon (3)
-
Indian Ocean
-
Arabian Sea
-
Gulf of Aden (1)
-
-
-
Indian Ocean Islands
-
Kerguelen Islands (1)
-
Madagascar (2)
-
Mauritius (1)
-
-
La Palma (1)
-
Mediterranean Sea
-
East Mediterranean (1)
-
-
Midlands (1)
-
North America
-
Appalachians
-
Northern Appalachians (1)
-
-
Basin and Range Province (4)
-
Canadian Shield
-
Churchill Province
-
Cape Smith fold belt (1)
-
-
-
North American Cordillera
-
Canadian Cordillera (2)
-
-
North American Craton (1)
-
Omineca Belt (1)
-
Rio Grande Rift (3)
-
-
Oceania
-
Melanesia
-
Vanuatu (2)
-
-
Polynesia
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
-
-
Pacific Ocean
-
Central Pacific (1)
-
East Pacific
-
Northeast Pacific
-
Hawaiian Ridge (1)
-
Navarin Basin (1)
-
-
-
North Pacific
-
Bering Sea
-
Navarin Basin (1)
-
-
Northeast Pacific
-
Hawaiian Ridge (1)
-
Navarin Basin (1)
-
-
-
West Pacific (2)
-
-
Quesnellia Terrane (1)
-
South America
-
Argentina
-
Chubut Argentina (1)
-
-
Brazil
-
Paraiba Brazil (1)
-
Rio Grande do Norte Brazil (1)
-
Sao Paulo Brazil (1)
-
Serra do Mar (1)
-
-
Patagonia (1)
-
-
South Island (2)
-
Southern Ocean
-
Ross Sea
-
McMurdo Sound (1)
-
-
-
Taylor Valley (1)
-
United States
-
Alaska (1)
-
Arizona
-
Cochise County Arizona (1)
-
Mohave County Arizona (3)
-
-
California
-
San Bernardino County California
-
Cima volcanic field (1)
-
-
-
Colorado
-
Routt County Colorado (1)
-
-
Colorado Plateau (3)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
Nevada
-
Nye County Nevada (1)
-
-
New Hampshire
-
Carroll County New Hampshire (1)
-
Rockingham County New Hampshire (1)
-
Strafford County New Hampshire (1)
-
-
New Mexico (2)
-
Texas
-
Uvalde County Texas (1)
-
-
Utah
-
Washington County Utah (2)
-
-
Western U.S. (1)
-
-
White Mountains (1)
-
-
commodities
-
metal ores
-
copper ores (1)
-
gold ores (3)
-
silver ores (1)
-
-
mineral deposits, genesis (2)
-
-
elements, isotopes
-
carbon
-
C-14 (1)
-
-
chemical ratios (3)
-
halogens
-
chlorine (1)
-
-
hydrogen (1)
-
incompatible elements (3)
-
isotope ratios (22)
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Pb-206/Pb-204 (11)
-
Pb-207/Pb-204 (5)
-
Pb-208/Pb-204 (6)
-
Ra-226 (1)
-
Rb-87/Sr-86 (1)
-
Sm-147/Nd-144 (1)
-
Th-230/Ra-226 (1)
-
Th-232/Th-230 (1)
-
U-238/Th-230 (1)
-
-
stable isotopes
-
He-3 (1)
-
Hf-177/Hf-176 (1)
-
Nd-144/Nd-143 (20)
-
O-18/O-16 (1)
-
Pb-206/Pb-204 (11)
-
Pb-207/Pb-204 (5)
-
Pb-207/Pb-206 (1)
-
Pb-208/Pb-204 (6)
-
Rb-87/Sr-86 (1)
-
Sm-147/Nd-144 (1)
-
Sr-87/Sr-86 (24)
-
-
-
large-ion lithophile elements (1)
-
metals
-
actinides
-
protactinium (1)
-
thorium
-
Th-230/Ra-226 (1)
-
Th-232/Th-230 (1)
-
U-238/Th-230 (1)
-
-
uranium
-
U-238/Th-230 (1)
-
-
-
alkali metals
-
potassium (1)
-
rubidium
-
Rb-87/Sr-86 (1)
-
-
sodium (1)
-
-
alkaline earth metals
-
calcium (4)
-
magnesium (5)
-
radium
-
Ra-226 (1)
-
Th-230/Ra-226 (1)
-
-
strontium
-
Rb-87/Sr-86 (1)
-
Sr-87/Sr-86 (24)
-
-
-
aluminum (2)
-
chromium (2)
-
gold (1)
-
hafnium
-
Hf-177/Hf-176 (1)
-
-
iron (3)
-
lead
-
Pb-206/Pb-204 (11)
-
Pb-207/Pb-204 (5)
-
Pb-207/Pb-206 (1)
-
Pb-208/Pb-204 (6)
-
-
manganese (1)
-
platinum group (2)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (20)
-
Sm-147/Nd-144 (1)
-
-
samarium
-
Sm-147/Nd-144 (1)
-
-
yttrium (1)
-
-
titanium (3)
-
zinc (1)
-
zirconium (1)
-
-
nitrogen (1)
-
noble gases
-
helium
-
He-3 (1)
-
-
-
oxygen
-
O-18/O-16 (1)
-
-
silicon (2)
-
sulfur (3)
-
trace metals (1)
-
-
geochronology methods
-
Ar/Ar (10)
-
fission-track dating (1)
-
K/Ar (17)
-
paleomagnetism (3)
-
Rb/Sr (1)
-
Re/Os (1)
-
Sr/Sr (1)
-
Th/U (1)
-
uranium disequilibrium (2)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
upper Holocene (1)
-
-
Pleistocene
-
upper Pleistocene
-
Weichselian
-
upper Weichselian
-
Allerod (1)
-
-
-
-
-
-
Tertiary
-
Neogene
-
Miocene
-
middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene
-
upper Pliocene (2)
-
-
-
Paleogene
-
Eocene
-
upper Eocene (2)
-
-
Oligocene (4)
-
Paleocene (1)
-
-
upper Tertiary (1)
-
-
upper Cenozoic (3)
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous (1)
-
Upper Cretaceous (3)
-
-
Jurassic
-
Lower Jurassic (1)
-
-
Triassic (1)
-
upper Mesozoic (1)
-
-
Paleozoic
-
Cambrian
-
Middle Cambrian (1)
-
-
Carboniferous
-
Namurian (1)
-
Upper Carboniferous
-
Westphalian (1)
-
-
-
Permian (1)
-
-
Phanerozoic (1)
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (3)
-
feldspathoid rocks (1)
-
hypabyssal rocks (1)
-
kimberlite (2)
-
peperite (1)
-
picrite (1)
-
plutonic rocks
-
alnoite (1)
-
diabase
-
diabase porphyry (1)
-
-
diorites
-
trondhjemite (1)
-
-
gabbros
-
alkali gabbros (3)
-
-
granites (2)
-
ijolite (3)
-
lamprophyres
-
camptonite (2)
-
monchiquite (2)
-
-
monzonites (1)
-
syenites
-
nepheline syenite (2)
-
shonkinite (1)
-
-
ultramafics
-
peridotites
-
dunite (1)
-
garnet lherzolite (1)
-
harzburgite (4)
-
lherzolite (6)
-
spinel lherzolite (4)
-
spinel peridotite (1)
-
-
pyroxenite
-
garnet pyroxenite (1)
-
websterite (2)
-
-
-
-
volcanic rocks
-
andesites (4)
-
basalts
-
alkali basalts
-
alkali olivine basalt (5)
-
hawaiite (13)
-
mugearite (5)
-
trachybasalts (4)
-
-
flood basalts (1)
-
mid-ocean ridge basalts (4)
-
ocean-island basalts (7)
-
olivine basalt (2)
-
olivine tholeiite (1)
-
shoshonite (1)
-
tholeiite (6)
-
tholeiitic basalt (2)
-
-
basanite
-
ankaramite (13)
-
-
benmoreite (2)
-
dacites (1)
-
glasses
-
volcanic glass (2)
-
-
komatiite (2)
-
limburgite (1)
-
meimechite (1)
-
melilitite (2)
-
nephelinite
-
ankaratrite (3)
-
olivine nephelinite (2)
-
-
phonolites (15)
-
pyroclastics
-
hyaloclastite (1)
-
ignimbrite (1)
-
pumice (1)
-
tuff (6)
-
-
rhyodacites (1)
-
rhyolites
-
comendite (1)
-
-
tephrite (8)
-
trachyandesites
-
absarokite (1)
-
-
trachytes (12)
-
-
-
ophiolite (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
eclogite (1)
-
granulites (1)
-
metasedimentary rocks (1)
-
metavolcanic rocks (1)
-
-
ophiolite (1)
-
-
minerals
-
carbonates
-
calcite (2)
-
-
halides (1)
-
minerals (3)
-
oxides
-
chrome spinel (2)
-
chromite (1)
-
goethite (1)
-
ilmenite (2)
-
spinel (2)
-
titanomagnetite (2)
-
-
phosphates
-
apatite (5)
-
-
silicates
-
chain silicates
-
aenigmatite group
-
rhonite (1)
-
-
amphibole group
-
clinoamphibole
-
kaersutite (3)
-
pargasite (1)
-
richterite (1)
-
-
-
pyroxene group
-
clinopyroxene
-
augite (1)
-
chrome diopside (1)
-
diopside (4)
-
-
orthopyroxene
-
enstatite (1)
-
hypersthene (1)
-
-
-
-
feldspathoids (1)
-
framework silicates
-
feldspar group
-
alkali feldspar
-
sanidine (2)
-
-
plagioclase
-
labradorite (1)
-
-
-
leucite (3)
-
nepheline group
-
nepheline (5)
-
-
silica minerals
-
quartz (1)
-
-
sodalite group
-
hauyne (1)
-
nosean (1)
-
-
zeolite group (1)
-
-
orthosilicates
-
nesosilicates
-
garnet group (3)
-
olivine group
-
forsterite (2)
-
olivine (15)
-
-
titanite group
-
titanite (2)
-
-
zircon group
-
zircon (2)
-
-
-
-
ring silicates
-
milarite group (1)
-
-
sheet silicates
-
clay minerals
-
saponite (1)
-
smectite (2)
-
-
mica group
-
biotite (1)
-
phlogopite (1)
-
-
-
-
sulfates
-
anhydrite (1)
-
-
sulfides
-
pyrrhotite (1)
-
-
-
Primary terms
-
absolute age (29)
-
Africa
-
Cape Verde Islands (2)
-
East Africa
-
Kenya (1)
-
Sudan (2)
-
Tanzania
-
Kilimanjaro (1)
-
-
-
Madagascar (2)
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Middle Atlas (1)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
Middle Atlas (1)
-
-
Rif (1)
-
-
-
West Africa
-
Niger (1)
-
Senegal (1)
-
-
-
Antarctica
-
Antarctic ice sheet
-
West Antarctic ice sheet (1)
-
-
Antarctic Peninsula (1)
-
East Antarctica (1)
-
Ellsworth Land (1)
-
Marie Byrd Land (1)
-
Transantarctic Mountains (1)
-
Victoria Land (1)
-
-
Asia
-
Altai Mountains
-
Gorny Altai (1)
-
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Arabian Peninsula
-
Oman
-
Oman Mountains (1)
-
-
Saudi Arabia (2)
-
-
Baikal region (1)
-
Buryat Russian Federation
-
Vitim Plateau (1)
-
-
Chukotka Russian Federation
-
Chukchi Peninsula (1)
-
-
Euphrates River (1)
-
Far East
-
China
-
Anhui China (1)
-
Hainan China (1)
-
Jiangxi China (1)
-
Shandong China
-
Shandong Peninsula (1)
-
-
-
Indonesia
-
Sunda Arc (1)
-
-
-
Khakasiya Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
-
Middle East
-
Israel
-
Makhtesh Ramon (1)
-
-
Syria (1)
-
Turkey
-
Amanos Mountains (1)
-
East Anatolian Fault (1)
-
-
-
Sayan
-
Eastern Sayan (1)
-
-
Siberian Platform
-
Aldan Shield (2)
-
-
Transbaikalia (4)
-
Tuva Russian Federation (1)
-
Udokan Mountains (1)
-
Zabaykalskiy Russian Federation (2)
-
-
Atlantic Ocean
-
North Atlantic
-
North Sea (1)
-
-
-
Atlantic Ocean Islands
-
Azores
-
Sao Miguel Island (2)
-
-
Canary Islands
-
Grand Canary (1)
-
Tenerife (1)
-
-
Cape Verde Islands (2)
-
-
Atlantic region (1)
-
Australasia
-
Australia
-
Victoria Australia (1)
-
-
New Zealand
-
Otago New Zealand
-
Dunedin New Zealand (1)
-
Kakanui (1)
-
-
Southland New Zealand (1)
-
-
-
Canada
-
Arctic Archipelago (1)
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Eastern Canada
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basanite
Mineralogical and Isotope-Geochemical Characteristics of the Zharnichikha River Basanites (Southern Transbaikalia)
Intraplate Volcanism of the Alba Guyot: Geodynamic Formation Models of the Magellan Seamounts in the Pacific Ocean for 100 million years
Early Au-rich sulfide liquid saturation explains the low Au endowment of continental intraplate alkaline magmas
Xenoliths reveal a hot Moho and thin lithosphere at the Cordillera-craton boundary of western Canada
Origin of low Mg# hawaiites carrying peridotite xenoliths from the Cima volcanic field, California, USA: Evidence of rapid magma mixing during ascent along intersecting fractures
Experimental evidence on the origin of Ca-rich carbonated melts formed by interaction between sedimentary limestones and mantle-derived ultrabasic magmas
Platinum Group Elements in the South Transbaikalian Basanites (First Data)
Abstract Scattered occurrences of Miocene–Recent volcanic rocks of the alkaline intraplate association represent one of the last expressions of magmatism along the Antarctic Peninsula. The volcanic rocks were erupted after the cessation of subduction which stopped following a series of northward-younging ridge crest–trench collisions. Volcanism has been linked to the development of a growing slab window beneath the extinct convergent margin. Geochemically, lavas range from olivine tholeiite through to basanite and tephrite. Previous studies have emphasized the slab-window tectonic setting as key to allowing melting of peridotite in the asthenospheric void caused by the passage of the slab beneath the locus of volcanism. This hypothesis is revisited in the light of more recent petrological research, and an origin from melting of subducted slab-hosted pyroxenite is considered here to be a more viable alternative for their petrogenesis. Because of the simple geometry of ridge subduction, and the well-established chronology of ridge crest–trench collisions, the Antarctic Peninsula remains a key region for understanding the transition from active to passive margin resulting from cessation of subduction. However, there are still some key issues relating to their tectonomagmatic association, and, principally, the poor geochronological control on the volcanic rocks requires urgent attention.
Chapter 5.1a Northern Victoria Land: volcanology
Abstract Neogene volcanism is widespread in northern Victoria Land, and is part of the McMurdo Volcanic Group. It is characterized by multiple coalesced shield volcanoes but includes a few relatively small stratovolcanoes. Two volcanic provinces are defined (Hallett and Melbourne), with nine constituent volcanic fields. Multitudes of tiny monogenetic volcanic centres (mainly scoria cones) are also scattered across the region and are called the Northern Local Suite. The volcanism extends in age between middle Miocene ( c. 15 Ma) and present but most is <10 Ma. Two centres may still be active (Mount Melbourne and Mount Rittmann). It is alkaline, varying between basalt (basanite) and trachyte/rhyolite. There are also associated, geographically restricted, alkaline gabbro to granite plutons and dykes (Meander Intrusive Group) with mainly Eocene–Oligocene ages (52–18 Ma). The isotopic compositions of the plutons have been used to infer overall cooling of climate during the Eocene–Oligocene. The volcanic sequences are overwhelmingly glaciovolcanic and are dominated by ‘a‘ā lava-fed deltas, the first to be described anywhere. They have been a major source of information on Mio-Pliocene glacial conditions and were used to establish that the thermal regime during glacial periods was polythermal, thus necessitating a change in the prevailing paradigm for ice-sheet evolution.
Abstract Nineteen large (2348–4285 m above sea level) central polygenetic alkaline shield-like composite volcanoes and numerous smaller volcanoes in Marie Byrd Land (MBL) and western Ellsworth Land rise above the West Antarctic Ice Sheet (WAIS) and comprise the MBL Volcanic Group (MBLVG). Earliest MBLVG volcanism dates to the latest Eocene (36.6 Ma). Polygenetic volcanism began by the middle Miocene (13.4 Ma) and has continued into the Holocene without major interruptions, producing the central volcanoes with 24 large (2–10 km-diameter) summit calderas and abundant evidence for explosive eruptions in caldera-rim deposits. Rock lithofacies are dominated by basanite and trachyte/phonolite lava and breccia, deposited in both subaerial and ice-contact environments. The chronology of MBLVG volcanism is well constrained by 330 age analyses, including 52 new 40 Ar/ 39 Ar ages. A volcanic lithofacies record of glaciation provides evidence of local ice-cap glaciation at 29–27 Ma and of widespread WAIS glaciation by 9 Ma. Late Quaternary glaciovolcanic records document WAIS expansions that correlate to eustatic sea-level lowstands (MIS 16, 4 and 2): the WAIS was +500 m at 609 ka at coastal Mount Murphy, and +400 m at 64.7 ka, +400 m at 21.2 ka and +575 m at 17.5 ka at inland Mount Takahe.