- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Altiplano (2)
-
Asia
-
Far East
-
Indonesia
-
Java
-
Merapi (1)
-
-
-
Japan
-
Hokkaido (2)
-
Kyushu
-
Nagasaki Japan
-
Unzen (1)
-
-
-
-
Taiwan
-
Taipei Taiwan (1)
-
Tatun Shan (1)
-
-
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Sheveluch (2)
-
Tolbachik (1)
-
-
-
Russian Pacific region (2)
-
-
Atlantic Ocean
-
North Atlantic
-
Northwest Atlantic (1)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Lesser Antilles
-
Montserrat Island
-
Soufriere Hills (3)
-
-
Soufriere (5)
-
-
-
-
-
Cascade Range (7)
-
Central America
-
Guatemala
-
Santiaguito (2)
-
-
Panama (1)
-
-
Commonwealth of Independent States
-
Russian Federation
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Sheveluch (2)
-
Tolbachik (1)
-
-
-
Russian Pacific region (2)
-
-
-
Europe
-
Southern Europe
-
Greece
-
Greek Aegean Islands
-
Cyclades
-
Santorin (1)
-
Thera (1)
-
-
-
-
Italy
-
Campania Italy
-
Naples Italy (1)
-
Phlegraean Fields (2)
-
-
Sicily Italy
-
Lipari Islands (1)
-
-
-
-
-
Mediterranean region
-
Aegean Islands
-
Greek Aegean Islands
-
Cyclades
-
Santorin (1)
-
Thera (1)
-
-
-
-
-
Mediterranean Sea
-
Gulf of Pozzuoli (1)
-
-
North America
-
Basin and Range Province (1)
-
-
Pacific Ocean
-
South Pacific
-
Southwest Pacific (1)
-
-
West Pacific
-
Southwest Pacific (1)
-
-
-
Puna (1)
-
Saint Lucia (1)
-
Sierra Nevada (1)
-
South America
-
Andes
-
Central Andes (1)
-
-
Bolivia (1)
-
-
United States
-
California
-
Hilton Creek Fault (1)
-
Inyo County California
-
Inyo Mountains (1)
-
-
Mammoth Mountain (1)
-
Mono County California
-
Inyo Domes (2)
-
Long Valley Caldera (1)
-
Obsidian Dome (1)
-
-
Northern California (1)
-
Shasta County California
-
Lassen Peak (1)
-
-
-
New Mexico
-
Catron County New Mexico (1)
-
Datil-Mogollon volcanic field (1)
-
Sierra County New Mexico (1)
-
-
Washington
-
Skamania County Washington
-
Mount Saint Helens (4)
-
-
-
-
-
commodities
-
metal ores
-
base metals (1)
-
copper ores (1)
-
gold ores (1)
-
-
mineral deposits, genesis (2)
-
mineral exploration (1)
-
-
elements, isotopes
-
carbon
-
C-14 (1)
-
-
isotope ratios (1)
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Ra-226 (1)
-
Th-230/Ra-226 (1)
-
Th-232/Th-230 (1)
-
U-238/Th-232 (1)
-
U-238/U-234 (1)
-
-
-
metals
-
actinides
-
thorium
-
Th-230/Ra-226 (1)
-
Th-232/Th-230 (1)
-
U-238/Th-232 (1)
-
-
uranium
-
U-238/Th-232 (1)
-
U-238/U-234 (1)
-
-
-
alkali metals
-
lithium (1)
-
-
alkaline earth metals
-
barium (1)
-
magnesium (1)
-
radium
-
Ra-226 (1)
-
Th-230/Ra-226 (1)
-
-
-
precious metals (1)
-
rare earths (1)
-
-
sulfur (1)
-
-
geochronology methods
-
Ar/Ar (6)
-
paleomagnetism (3)
-
Th/U (3)
-
U/Pb (1)
-
uranium disequilibrium (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
upper Holocene (4)
-
-
Pleistocene
-
Bishop Tuff (1)
-
upper Pleistocene (2)
-
-
upper Quaternary (2)
-
-
Tertiary
-
Paleogene
-
Oligocene (1)
-
-
-
-
Mesozoic
-
Cretaceous (2)
-
-
-
igneous rocks
-
extrusive rocks (1)
-
igneous rocks
-
plutonic rocks
-
syenites
-
nepheline syenite
-
agpaite (1)
-
-
-
-
volcanic rocks
-
andesites (3)
-
basalts (1)
-
dacites (8)
-
phonolites (1)
-
pyroclastics
-
ash-flow tuff (1)
-
ignimbrite (3)
-
pumice (2)
-
scoria (1)
-
-
rhyolites (3)
-
trachytes (1)
-
-
-
volcanic ash (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
cataclasites (1)
-
-
-
minerals
-
minerals (1)
-
oxides
-
baddeleyite (1)
-
-
silicates
-
chain silicates
-
pyroxene group (1)
-
-
framework silicates
-
feldspar group
-
plagioclase (2)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (1)
-
-
-
-
sheet silicates
-
mica group
-
biotite (1)
-
-
-
-
-
Primary terms
-
absolute age (10)
-
Asia
-
Far East
-
Indonesia
-
Java
-
Merapi (1)
-
-
-
Japan
-
Hokkaido (2)
-
Kyushu
-
Nagasaki Japan
-
Unzen (1)
-
-
-
-
Taiwan
-
Taipei Taiwan (1)
-
Tatun Shan (1)
-
-
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Sheveluch (2)
-
Tolbachik (1)
-
-
-
Russian Pacific region (2)
-
-
Atlantic Ocean
-
North Atlantic
-
Northwest Atlantic (1)
-
-
-
carbon
-
C-14 (1)
-
-
Caribbean region
-
West Indies
-
Antilles
-
Lesser Antilles
-
Montserrat Island
-
Soufriere Hills (3)
-
-
Soufriere (5)
-
-
-
-
-
Cenozoic
-
Quaternary
-
Holocene
-
upper Holocene (4)
-
-
Pleistocene
-
Bishop Tuff (1)
-
upper Pleistocene (2)
-
-
upper Quaternary (2)
-
-
Tertiary
-
Paleogene
-
Oligocene (1)
-
-
-
-
Central America
-
Guatemala
-
Santiaguito (2)
-
-
Panama (1)
-
-
continental shelf (1)
-
crust (1)
-
crystal chemistry (1)
-
crystal growth (1)
-
data processing (2)
-
deformation (3)
-
earthquakes (6)
-
education (1)
-
Europe
-
Southern Europe
-
Greece
-
Greek Aegean Islands
-
Cyclades
-
Santorin (1)
-
Thera (1)
-
-
-
-
Italy
-
Campania Italy
-
Naples Italy (1)
-
Phlegraean Fields (2)
-
-
Sicily Italy
-
Lipari Islands (1)
-
-
-
-
-
explosions (1)
-
faults (4)
-
folds (1)
-
fractures (3)
-
geochemistry (10)
-
geodesy (1)
-
geomorphology (6)
-
geophysical methods (2)
-
glacial geology (1)
-
ground water (1)
-
hydrology (3)
-
igneous rocks
-
plutonic rocks
-
syenites
-
nepheline syenite
-
agpaite (1)
-
-
-
-
volcanic rocks
-
andesites (3)
-
basalts (1)
-
dacites (8)
-
phonolites (1)
-
pyroclastics
-
ash-flow tuff (1)
-
ignimbrite (3)
-
pumice (2)
-
scoria (1)
-
-
rhyolites (3)
-
trachytes (1)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
intrusions (3)
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Ra-226 (1)
-
Th-230/Ra-226 (1)
-
Th-232/Th-230 (1)
-
U-238/Th-232 (1)
-
U-238/U-234 (1)
-
-
-
land use (1)
-
lava (11)
-
magmas (13)
-
Mediterranean region
-
Aegean Islands
-
Greek Aegean Islands
-
Cyclades
-
Santorin (1)
-
Thera (1)
-
-
-
-
-
Mediterranean Sea
-
Gulf of Pozzuoli (1)
-
-
Mesozoic
-
Cretaceous (2)
-
-
metal ores
-
base metals (1)
-
copper ores (1)
-
gold ores (1)
-
-
metals
-
actinides
-
thorium
-
Th-230/Ra-226 (1)
-
Th-232/Th-230 (1)
-
U-238/Th-232 (1)
-
-
uranium
-
U-238/Th-232 (1)
-
U-238/U-234 (1)
-
-
-
alkali metals
-
lithium (1)
-
-
alkaline earth metals
-
barium (1)
-
magnesium (1)
-
radium
-
Ra-226 (1)
-
Th-230/Ra-226 (1)
-
-
-
precious metals (1)
-
rare earths (1)
-
-
metamorphic rocks
-
cataclasites (1)
-
-
metasomatism (2)
-
mineral deposits, genesis (2)
-
mineral exploration (1)
-
minerals (1)
-
North America
-
Basin and Range Province (1)
-
-
ocean floors (1)
-
Pacific Ocean
-
South Pacific
-
Southwest Pacific (1)
-
-
West Pacific
-
Southwest Pacific (1)
-
-
-
paleomagnetism (3)
-
petrology (3)
-
phase equilibria (2)
-
plate tectonics (1)
-
remote sensing (7)
-
rock mechanics (2)
-
sea-level changes (1)
-
sedimentary rocks (1)
-
slope stability (2)
-
soil mechanics (1)
-
soils
-
laterites (1)
-
-
South America
-
Andes
-
Central Andes (1)
-
-
Bolivia (1)
-
-
spectroscopy (1)
-
springs (1)
-
structural analysis (1)
-
sulfur (1)
-
tectonics (3)
-
United States
-
California
-
Hilton Creek Fault (1)
-
Inyo County California
-
Inyo Mountains (1)
-
-
Mammoth Mountain (1)
-
Mono County California
-
Inyo Domes (2)
-
Long Valley Caldera (1)
-
Obsidian Dome (1)
-
-
Northern California (1)
-
Shasta County California
-
Lassen Peak (1)
-
-
-
New Mexico
-
Catron County New Mexico (1)
-
Datil-Mogollon volcanic field (1)
-
Sierra County New Mexico (1)
-
-
Washington
-
Skamania County Washington
-
Mount Saint Helens (4)
-
-
-
-
volcanology (7)
-
-
rock formations
-
Table Mountain Group (1)
-
-
sedimentary rocks
-
sedimentary rocks (1)
-
volcaniclastics (1)
-
-
sediments
-
volcaniclastics (1)
-
-
soils
-
paleosols (1)
-
soils
-
laterites (1)
-
-
lava domes
Large-scale lava dome fracturing as a result of concealed weakened zones
Eruption age and duration of the ∼9 km 3 Burney Mountain dacite dome complex, northern California, USA
Transition of eruptive style: Pumice raft to dome-forming eruption at the Havre submarine volcano, southwest Pacific Ocean
Tectonics, structure, and resurgence of the largest Quaternary caldera in Japan: Kutcharo, Hokkaido
PERSPECTIVE
Dome growth, collapse, and valley fill at Soufrière Hills Volcano, Montserrat, from 1995 to 2013: Contributions from satellite radar measurements of topographic change
Voluminous plutonism during volcanic quiescence revealed by thermochemical modeling of zircon
Cerro Quema (Azuero Peninsula, Panama): Geology, Alteration, Mineralization, and Geochronology of a Volcanic Dome-Hosted High-Sulfidation Au-Cu Deposit
Synergistic use of satellite thermal detection and science: a decadal perspective using ASTER
Abstract Many volcanoes around the world are poorly monitored and new eruptions increase the need for rapid ground-based monitoring, which is not always available in a timely manner. Initial observations therefore are commonly provided by orbital remote sensing instruments at different temporal, spatial and wavelength scales. Even at well-monitored volcanoes, satellite data still play an important role. The ASTER (Advanced Spaceborne Thermal Emission Radiometer) orbital sensor provides moderately high spatial resolution images in multiple wavelength regions; however, because ASTER is a scheduled instrument, the data are not acquired over specific targets every orbit. Therefore, in an attempt to improve the temporal frequency of ASTER specifically for volcano observations and to have the images integrate synergistically with high temporal resolution data, the Urgent Request Protocol (URP) system was developed in 2004. Now integrated with both the AVHRR (Advanced Very High Resolution Radiometer) and MODIS (Moderate Resolution Imaging Spectroradiometer) hotspot monitoring programmes, the URP acquires an average of 24 volcanic datasets every month and planned improvements will allow this number to increase in the future. New URP data are sent directly to investigators responding to the ongoing eruption, and the large archive is also being used for retrospective science and operational studies for future instruments. The URP Program has been very successful over the past decade and will continue until at least 2017 or as long as the ASTER sensor is operational. Several volcanic science examples are given here that highlight the various stages of the URP development. However, not all are strictly focused on effusive eruptions. Rather, these examples were chosen to demonstrate the wide range of applications, as well as the general usefulness of the higher resolution, multispectral data of ASTER.
U-Th baddeleyite geochronology and its significance to date the emplacement of silica undersaturated magmas
Abstract Twenty-six new 40 Ar/ 39 Ar plateau ages for 23 lavas and domes from the Uturuncu volcano in the Altiplano of SW Bolivia reveal a protracted eruptive history from 1050±5 to 250±5 ka. Eruptions have been exclusively effusive, producing some 50 km 3 of high-K dacites and silicic andesites. Bimodal mineral compositions, complex mineral textures, the presence of andesitic magmatic enclaves within dacites and linear chemical trends on binary element plots all indicate that magma mixing is an important petrogenetic process at Uturuncu. Post-458 ka, distinct high and low MgO–Cr magmas are resolved. These magmas erupt during similar times, suggesting that eruptions are tapping different parts of the magma system, albeit from the same vent system. Volcanic and petrological features are consistent with the existence of a vertically extensive magma mush column beneath Uturuncu, and calculated buoyancy forces are sufficient to drive effusive eruptions. Eruptive activity is episodic, with six eruptive periods separated by hiatuses of >50 kyr. Cumulative volume curves demonstrate that the majority of the edifice formed between 595 and 505 ka. The episodicity of eruptions is most likely to be related to fluctuations in the magma supply to the underlying Altiplano–Puno Magma Body. Supplementary material: Detailed 40 Ar/ 39 Ar data, and lava flow and dome areas, volumes and stratigraphic ages where absolute ages are lacking are available at www.geolsoc.org.uk/SUP18815
Abstract U–Th–Ra isotope analyses of whole rocks and mineral separates were conducted in order to perform isochron dating of three morphologically young lavas from Tatun volcano, northern Taiwan (from Mt Cising, the Shamao dome and the Huangzuei volcano). The data do not yield tight U–Th isochrons, indicating open-system magmatic processes. However, crystallization ages of two samples can be constrained: namely, less than about 1370 years for the Shamao dome, based on 226 Ra– 230 Th disequilibrium in magnetite, and less than approximately 70 ka (but potentially Holocene) for a Huangzuei flow, based on 238 U– 230 Th disequilibrium in plagioclase. Discordant Ar–Ar, 238 U– 230 Th and 226 Ra– 230 Th ages are best explained by young lavas having inherited some crystals from older lithologies (crystal mushes or rocks), and indicate that the above ages represent maxima. Our study provides the first evidence of effusive volcanism at the Tatun Volcano Group in Late Holocene times. All separates from the Shamao dome and Huangzuei volcano are in 234 U– 238 U equilibrium. Minerals in the Mt Cising sample are in 234 U– 238 U disequilibrium, despite the 234 U– 238 U equilibrium of the whole rock. We interpret this as uptake of a hydrothermally altered, old crystal cargo into fresh melt prior to eruption. A different dating approach will thus be required to constrain the eruption age of Mt Cising. Supplementary material: Ar–Ar plateaus from Mt Cising and the Shamao dome, reproduced from Lee (1996) , are available at www.geolsoc.org.uk/SUP18817
Eruption history, conduit migration, and steady discharge of magma for the past 50,000 yr at Esan volcanic complex, northern Japan
From Kīlauea Iki 1959 to Eyjafjallajökull 2010: How volcanology has changed!
The field of volcanology has greatly changed during the last half century. The profession is now much more diverse and interdisciplinary, even including collaborating researchers from the social and medical sciences. This new mode of cooperation and working has been more successful in mitigating volcanic hazards and risks. There are fewer of the strong-willed lone rangers of the past and more of those who work with teams to more effectively understand how volcanoes work to protect those living on or near active or potentially active volcanoes. Moreover, there are more university departments with volcanology in their curricula and more international symposia and workshops focusing on mitigation of risk posed by volcano-related hazards. We all have respected colleagues and volcano observatories in many countries. The importance of understanding explosive volcanic eruptions and tracking of eruption plumes involves volcanologists, atmospheric physicists, and air-traffic controllers and is of great interest to the aviation industry. We now have the links in place between great science and practical applications.