- 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
-
Africa
-
Southern Africa
-
Lesotho (1)
-
South Africa (1)
-
-
-
Arctic Ocean
-
Norwegian Sea
-
Kolbeinsey Ridge (1)
-
-
-
Asia
-
Far East
-
China
-
Heilongjiang China (1)
-
Inner Mongolia China (1)
-
Jilin China (1)
-
Songliao Basin (1)
-
-
Indonesia
-
Java
-
Galunggung (1)
-
-
Sumatra
-
Toba Lake (1)
-
-
-
Japan
-
Honshu
-
Japanese Alps
-
Hida Mountains (1)
-
-
-
-
Mongolia
-
Hangay Mountains (1)
-
-
Taiwan (1)
-
-
Siberia (1)
-
-
Austral Basin (1)
-
Australasia
-
Australia
-
New South Wales Australia
-
Orange Australia (1)
-
Yeoval Australia (1)
-
-
South Australia (1)
-
Western Australia
-
Kambalda Australia (1)
-
-
-
New Zealand
-
Taupo (2)
-
-
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia
-
Annapolis County Nova Scotia (1)
-
Digby County Nova Scotia (1)
-
Kings County Nova Scotia (1)
-
-
-
Quebec
-
Gaspe Peninsula (1)
-
-
-
-
Cascade Range (1)
-
Commonwealth of Independent States
-
Russian Federation (1)
-
-
East Pacific Ocean Islands
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (2)
-
Mauna Kea (1)
-
Puu Oo (1)
-
-
-
Mauna Loa (3)
-
-
-
Europe
-
Southern Europe
-
Italy
-
Sicily Italy
-
Lipari Islands
-
Lipari Island (1)
-
Stromboli (2)
-
-
Mount Etna (1)
-
-
-
-
Western Europe
-
Iceland
-
Grimsvotn (1)
-
Krafla (1)
-
-
Ireland (1)
-
United Kingdom
-
Great Britain
-
England
-
Durham England (1)
-
Northumberland England (1)
-
-
Scotland (1)
-
-
-
-
-
Indian Ocean (1)
-
North America
-
Basin and Range Province (1)
-
Rocky Mountains
-
U. S. Rocky Mountains
-
San Juan Mountains (1)
-
-
-
-
North Island (2)
-
Oceania
-
Polynesia
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (2)
-
Mauna Kea (1)
-
Puu Oo (1)
-
-
-
Mauna Loa (3)
-
-
-
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
-
Loihi Seamount (1)
-
-
-
North Pacific
-
Northeast Pacific
-
Loihi Seamount (1)
-
-
Northwest Pacific
-
Izu-Bonin Arc (1)
-
Sumisu Rift (1)
-
-
-
South Pacific
-
Southwest Pacific
-
Bismarck Sea
-
Manus Basin (1)
-
-
-
-
West Pacific
-
Northwest Pacific
-
Izu-Bonin Arc (1)
-
Sumisu Rift (1)
-
-
Southwest Pacific
-
Bismarck Sea
-
Manus Basin (1)
-
-
-
-
-
Pasco Basin (2)
-
South America
-
Argentina
-
Neuquen Basin (1)
-
-
Brazil
-
Rio Grande do Sul Brazil (2)
-
-
Chile (2)
-
Parana Basin (1)
-
-
United States
-
Alaska
-
Novarupta (1)
-
-
Arizona
-
Apache County Arizona (1)
-
-
California
-
Inyo County California
-
Inyo Mountains (1)
-
-
Mono County California
-
Inyo Domes (1)
-
Obsidian Dome (1)
-
-
-
Colorado
-
Mesa County Colorado (1)
-
-
Colorado Plateau (4)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (2)
-
Mauna Kea (1)
-
Puu Oo (1)
-
-
-
Mauna Loa (3)
-
-
Nevada
-
Churchill County Nevada (1)
-
Eureka County Nevada (1)
-
Lander County Nevada (1)
-
Nye County Nevada (1)
-
Pershing County Nevada (1)
-
-
New Jersey
-
Morris County New Jersey (1)
-
Passaic County New Jersey (2)
-
Watchung Mountains (2)
-
-
New Mexico
-
Jemez Mountains (1)
-
Sandoval County New Mexico (1)
-
Valles Caldera (1)
-
-
Newark Basin (1)
-
Oregon (1)
-
U. S. Rocky Mountains
-
San Juan Mountains (1)
-
-
Utah
-
Piute County Utah
-
Marysvale Utah (1)
-
-
-
Washington
-
Benton County Washington (2)
-
Chelan County Washington (1)
-
Hanford Site (2)
-
Skamania County Washington
-
Mount Saint Helens (1)
-
-
-
-
-
commodities
-
gems (3)
-
geothermal energy (1)
-
glass materials (3)
-
metal ores
-
copper ores (1)
-
gold ores (1)
-
nickel ores (1)
-
platinum ores (2)
-
-
mineral deposits, genesis (3)
-
mineral exploration (2)
-
petroleum
-
natural gas (2)
-
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (1)
-
-
halogens
-
chlorine (1)
-
-
hydrogen (1)
-
isotope ratios (1)
-
isotopes
-
stable isotopes
-
C-13/C-12 (1)
-
O-18/O-16 (2)
-
-
-
metals
-
alkaline earth metals
-
beryllium (1)
-
-
copper (1)
-
gold (1)
-
platinum group
-
iridium (1)
-
palladium (1)
-
platinum (1)
-
platinum ores (2)
-
rhodium (1)
-
ruthenium (1)
-
-
rare earths (1)
-
-
oxygen
-
O-18/O-16 (2)
-
-
sulfur (2)
-
-
geochronology methods
-
Ar/Ar (3)
-
paleomagnetism (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Pleistocene
-
upper Pleistocene (1)
-
-
-
Tertiary
-
Neogene
-
Miocene
-
Columbia River Basalt Group (3)
-
Frenchman Springs Member (1)
-
Grande Ronde Basalt (3)
-
Wanapum Basalt (1)
-
-
Pliocene (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous (1)
-
-
Jurassic
-
Lower Jurassic (1)
-
-
Serra Geral Formation (2)
-
-
Paleozoic
-
Carboniferous (1)
-
Devonian
-
Lower Devonian (1)
-
Old Red Sandstone (1)
-
-
Ordovician (1)
-
Permian (1)
-
-
Precambrian
-
Archean
-
Mesoarchean (1)
-
-
Pongola Supergroup (1)
-
-
-
igneous rocks
-
igneous rocks
-
peperite (1)
-
plutonic rocks
-
diabase (2)
-
gabbros (1)
-
granites
-
S-type granites (1)
-
-
pegmatite (3)
-
-
volcanic rocks
-
andesites (3)
-
basalts
-
alkali basalts (1)
-
flood basalts (5)
-
tholeiitic basalt (1)
-
-
dacites
-
dacite porphyry (1)
-
-
glasses
-
obsidian (1)
-
volcanic glass (3)
-
-
komatiite (1)
-
pyroclastics
-
ignimbrite (2)
-
pumice (7)
-
scoria (2)
-
tuff (1)
-
-
rhyolites (5)
-
-
-
volcanic ash (3)
-
-
metamorphic rocks
-
metamorphic rocks
-
metasomatic rocks
-
greisen (1)
-
skarn (1)
-
-
mylonites
-
pseudotachylite (2)
-
-
schists
-
greenstone (1)
-
-
-
-
meteorites
-
meteorites
-
micrometeorites (1)
-
stony meteorites
-
achondrites
-
HED meteorites (1)
-
howardite (1)
-
-
chondrites
-
carbonaceous chondrites
-
CM chondrites (1)
-
CV chondrites (1)
-
-
-
-
-
-
minerals
-
alloys (1)
-
carbonates
-
calcite (1)
-
magnesian calcite (1)
-
-
minerals (1)
-
oxides
-
spinel (1)
-
-
silicates
-
chain silicates
-
pyroxene group
-
clinopyroxene
-
augite (1)
-
-
orthopyroxene
-
enstatite (1)
-
-
-
-
framework silicates
-
feldspar group
-
plagioclase (3)
-
-
silica minerals
-
amethyst (2)
-
chalcedony (1)
-
quartz (2)
-
-
-
magnesian silicates (1)
-
orthosilicates
-
nesosilicates
-
olivine group
-
forsterite (1)
-
olivine (3)
-
-
-
-
ring silicates
-
aquamarine (1)
-
beryl (1)
-
-
sheet silicates
-
serpentine group
-
serpentine (1)
-
-
-
-
sulfates
-
anhydrite (1)
-
-
sulfides (1)
-
-
Primary terms
-
absolute age (3)
-
Africa
-
Southern Africa
-
Lesotho (1)
-
South Africa (1)
-
-
-
Arctic Ocean
-
Norwegian Sea
-
Kolbeinsey Ridge (1)
-
-
-
Asia
-
Far East
-
China
-
Heilongjiang China (1)
-
Inner Mongolia China (1)
-
Jilin China (1)
-
Songliao Basin (1)
-
-
Indonesia
-
Java
-
Galunggung (1)
-
-
Sumatra
-
Toba Lake (1)
-
-
-
Japan
-
Honshu
-
Japanese Alps
-
Hida Mountains (1)
-
-
-
-
Mongolia
-
Hangay Mountains (1)
-
-
Taiwan (1)
-
-
Siberia (1)
-
-
Australasia
-
Australia
-
New South Wales Australia
-
Orange Australia (1)
-
Yeoval Australia (1)
-
-
South Australia (1)
-
Western Australia
-
Kambalda Australia (1)
-
-
-
New Zealand
-
Taupo (2)
-
-
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia
-
Annapolis County Nova Scotia (1)
-
Digby County Nova Scotia (1)
-
Kings County Nova Scotia (1)
-
-
-
Quebec
-
Gaspe Peninsula (1)
-
-
-
-
carbon
-
C-13/C-12 (1)
-
-
Cenozoic
-
Quaternary
-
Pleistocene
-
upper Pleistocene (1)
-
-
-
Tertiary
-
Neogene
-
Miocene
-
Columbia River Basalt Group (3)
-
Frenchman Springs Member (1)
-
Grande Ronde Basalt (3)
-
Wanapum Basalt (1)
-
-
Pliocene (1)
-
-
-
-
crystal chemistry (2)
-
crystal growth (2)
-
crystal structure (1)
-
crystallography (1)
-
data processing (1)
-
deformation (2)
-
diagenesis (1)
-
East Pacific Ocean Islands
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (2)
-
Mauna Kea (1)
-
Puu Oo (1)
-
-
-
Mauna Loa (3)
-
-
-
economic geology (1)
-
engineering geology (2)
-
epeirogeny (1)
-
Europe
-
Southern Europe
-
Italy
-
Sicily Italy
-
Lipari Islands
-
Lipari Island (1)
-
Stromboli (2)
-
-
Mount Etna (1)
-
-
-
-
Western Europe
-
Iceland
-
Grimsvotn (1)
-
Krafla (1)
-
-
Ireland (1)
-
United Kingdom
-
Great Britain
-
England
-
Durham England (1)
-
Northumberland England (1)
-
-
Scotland (1)
-
-
-
-
-
faults (2)
-
fractures (2)
-
gems (3)
-
geochemistry (7)
-
geomorphology (1)
-
geophysical methods (1)
-
geothermal energy (1)
-
hydrogen (1)
-
igneous rocks
-
peperite (1)
-
plutonic rocks
-
diabase (2)
-
gabbros (1)
-
granites
-
S-type granites (1)
-
-
pegmatite (3)
-
-
volcanic rocks
-
andesites (3)
-
basalts
-
alkali basalts (1)
-
flood basalts (5)
-
tholeiitic basalt (1)
-
-
dacites
-
dacite porphyry (1)
-
-
glasses
-
obsidian (1)
-
volcanic glass (3)
-
-
komatiite (1)
-
pyroclastics
-
ignimbrite (2)
-
pumice (7)
-
scoria (2)
-
tuff (1)
-
-
rhyolites (5)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
Indian Ocean (1)
-
intrusions (7)
-
isotopes
-
stable isotopes
-
C-13/C-12 (1)
-
O-18/O-16 (2)
-
-
-
lava (21)
-
magmas (28)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous (1)
-
-
Jurassic
-
Lower Jurassic (1)
-
-
Serra Geral Formation (2)
-
-
metal ores
-
copper ores (1)
-
gold ores (1)
-
nickel ores (1)
-
platinum ores (2)
-
-
metals
-
alkaline earth metals
-
beryllium (1)
-
-
copper (1)
-
gold (1)
-
platinum group
-
iridium (1)
-
palladium (1)
-
platinum (1)
-
platinum ores (2)
-
rhodium (1)
-
ruthenium (1)
-
-
rare earths (1)
-
-
metamorphic rocks
-
metasomatic rocks
-
greisen (1)
-
skarn (1)
-
-
mylonites
-
pseudotachylite (2)
-
-
schists
-
greenstone (1)
-
-
-
metamorphism (4)
-
metasomatism (3)
-
meteorites
-
micrometeorites (1)
-
stony meteorites
-
achondrites
-
HED meteorites (1)
-
howardite (1)
-
-
chondrites
-
carbonaceous chondrites
-
CM chondrites (1)
-
CV chondrites (1)
-
-
-
-
-
mineral deposits, genesis (3)
-
mineral exploration (2)
-
minerals (1)
-
North America
-
Basin and Range Province (1)
-
Rocky Mountains
-
U. S. Rocky Mountains
-
San Juan Mountains (1)
-
-
-
-
Ocean Drilling Program
-
Leg 193 (1)
-
-
ocean floors (1)
-
Oceania
-
Polynesia
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (2)
-
Mauna Kea (1)
-
Puu Oo (1)
-
-
-
Mauna Loa (3)
-
-
-
-
oceanography (1)
-
oxygen
-
O-18/O-16 (2)
-
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
-
Loihi Seamount (1)
-
-
-
North Pacific
-
Northeast Pacific
-
Loihi Seamount (1)
-
-
Northwest Pacific
-
Izu-Bonin Arc (1)
-
Sumisu Rift (1)
-
-
-
South Pacific
-
Southwest Pacific
-
Bismarck Sea
-
Manus Basin (1)
-
-
-
-
West Pacific
-
Northwest Pacific
-
Izu-Bonin Arc (1)
-
Sumisu Rift (1)
-
-
Southwest Pacific
-
Bismarck Sea
-
Manus Basin (1)
-
-
-
-
-
paleoclimatology (1)
-
paleogeography (7)
-
paleomagnetism (1)
-
Paleozoic
-
Carboniferous (1)
-
Devonian
-
Lower Devonian (1)
-
Old Red Sandstone (1)
-
-
Ordovician (1)
-
Permian (1)
-
-
petroleum
-
natural gas (2)
-
-
petrology (7)
-
plate tectonics (1)
-
Precambrian
-
Archean
-
Mesoarchean (1)
-
-
Pongola Supergroup (1)
-
-
roads (1)
-
rock mechanics (2)
-
sedimentary rocks
-
clastic rocks
-
sandstone (1)
-
-
-
sedimentary structures
-
planar bedding structures
-
bedding (1)
-
-
secondary structures
-
geodes (2)
-
-
soft sediment deformation (1)
-
-
sedimentation (3)
-
sediments
-
clastic sediments (1)
-
marine sediments (2)
-
-
soils (1)
-
South America
-
Argentina
-
Neuquen Basin (1)
-
-
Brazil
-
Rio Grande do Sul Brazil (2)
-
-
Chile (2)
-
Parana Basin (1)
-
-
stratigraphy (1)
-
structural geology (1)
-
sulfur (2)
-
tectonics (3)
-
United States
-
Alaska
-
Novarupta (1)
-
-
Arizona
-
Apache County Arizona (1)
-
-
California
-
Inyo County California
-
Inyo Mountains (1)
-
-
Mono County California
-
Inyo Domes (1)
-
Obsidian Dome (1)
-
-
-
Colorado
-
Mesa County Colorado (1)
-
-
Colorado Plateau (4)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (2)
-
Mauna Kea (1)
-
Puu Oo (1)
-
-
-
Mauna Loa (3)
-
-
Nevada
-
Churchill County Nevada (1)
-
Eureka County Nevada (1)
-
Lander County Nevada (1)
-
Nye County Nevada (1)
-
Pershing County Nevada (1)
-
-
New Jersey
-
Morris County New Jersey (1)
-
Passaic County New Jersey (2)
-
Watchung Mountains (2)
-
-
New Mexico
-
Jemez Mountains (1)
-
Sandoval County New Mexico (1)
-
Valles Caldera (1)
-
-
Newark Basin (1)
-
Oregon (1)
-
U. S. Rocky Mountains
-
San Juan Mountains (1)
-
-
Utah
-
Piute County Utah
-
Marysvale Utah (1)
-
-
-
Washington
-
Benton County Washington (2)
-
Chelan County Washington (1)
-
Hanford Site (2)
-
Skamania County Washington
-
Mount Saint Helens (1)
-
-
-
-
volcanology (3)
-
waste disposal (1)
-
weathering (2)
-
well-logging (1)
-
-
rock formations
-
Botucatu Formation (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
clastic rocks
-
sandstone (1)
-
-
-
volcaniclastics (2)
-
-
sedimentary structures
-
sedimentary structures
-
planar bedding structures
-
bedding (1)
-
-
secondary structures
-
geodes (2)
-
-
soft sediment deformation (1)
-
-
stratification (1)
-
-
sediments
-
sediments
-
clastic sediments (1)
-
marine sediments (2)
-
-
volcaniclastics (2)
-
-
soils
-
soils (1)
-
vesicular texture
Mid-loaf crisis: Internal breadcrust surfaces in rhyolitic pyroclasts reveal dehydration quenching
Magma Fragmentation
Frictional Melting in Magma and Lava
Oxide-Sulfide-Melt-Bubble Interactions in Spinel-Rich Taxitic Rocks of the Norilsk-Talnakh Intrusions, Polar Siberia
Can nanolites enhance eruption explosivity?
Vapor Transport and Deposition of Cu-Sn-Co-Ag Alloys in Vesicles in Mafic Volcanic Rocks
Physical constraints for effective magma-water interaction along volcanic conduits during silicic explosive eruptions: COMMENT
The interplay among clast size, vesicularity, postfragmentation expansion, and clast breakage: An example from the 1.8 ka Taupo eruption
ABSTRACT Field studies of tephra-fall deposits traditionally use the density of juvenile pyroclasts to determine vesicularity of the host magma at the point of fragmentation. A range of pyroclast sizes between 16 and 32 mm has commonly been chosen for this purpose. Larger pyroclasts outside this range may undergo postfragmentation vesiculation due to slow cooling of the interior of the clasts, while smaller pyroclasts may be too small to represent accurately the distribution of the largest vesicles. The assumption of this method, of course, is that the 16–32 mm size range is representative of the fragmented magma. We explore, in detail, variations in density over a size range of 4–128 mm from Unit 2 pyroclasts of the 1.8 ka Taupo eruption and make inferences about the roles of postfragmentation vesiculation and secondary breakage of pyroclasts. We find (1) there is a clear threshold for onset of postfragmentation vesiculation at >32 mm, and (2) there are broken small pieces of the largest pyroclasts in the sample that artificially skew the density distribution for smaller size fractions. We constrain uncertainty associated with vesicularity measurements and offer best-practice recommendations in the hope of improving consistency of field sampling and laboratory processing of pyroclast populations for vesicularity studies.