- 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 (1)
-
Antarctica
-
Antarctic ice sheet (1)
-
Antarctic Peninsula (1)
-
Victoria Land (1)
-
-
Asia
-
Far East
-
Burma (1)
-
Cambodia (1)
-
China (2)
-
Korea (1)
-
Laos (1)
-
Malaysia (1)
-
Mongolia (1)
-
Thailand (1)
-
Vietnam (1)
-
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Tolbachik (9)
-
-
-
Middle East
-
Turkey (2)
-
-
Russian Pacific region (6)
-
-
Atlantic Ocean
-
North Atlantic
-
Faeroe-Shetland Basin (1)
-
-
-
Atlantic Ocean Islands
-
Canary Islands
-
Tenerife (1)
-
-
-
Blue Mountains (1)
-
Canada
-
Western Canada
-
British Columbia (1)
-
Canadian Cordillera (1)
-
Yukon Territory (1)
-
-
-
Cascade Range (3)
-
Central America
-
Guatemala
-
Pacaya (1)
-
-
Nicaragua (2)
-
-
Cerro Negro (2)
-
Commonwealth of Independent States
-
Russian Federation
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Tolbachik (9)
-
-
-
Russian Pacific region (6)
-
-
-
East Pacific Ocean Islands
-
Easter Island (1)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
Mauna Kea (1)
-
Mauna Ulu (1)
-
Puu Oo (1)
-
-
-
-
-
Europe
-
Central Europe
-
Germany
-
Hesse Germany (1)
-
-
-
Southern Europe
-
Italy
-
Sicily Italy
-
Lipari Islands (1)
-
Mount Etna (1)
-
-
-
-
-
Mexico
-
Chihuahua Mexico (1)
-
Jalisco Mexico (1)
-
Mexico state
-
Federal District Mexico
-
Mexico City Mexico (1)
-
-
Nevado de Toluca (2)
-
-
Michoacan-Guanajuato volcanic field (1)
-
Nayarit Mexico (1)
-
Popocatepetl (1)
-
Sonora Mexico (2)
-
Trans-Mexican volcanic belt (5)
-
-
North America
-
Basin and Range Province
-
Great Basin (3)
-
-
Kootenay Arc (1)
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
Rio Grande Rift (1)
-
Slide Mountain Terrane (1)
-
-
Oceania
-
Polynesia
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
Mauna Kea (1)
-
Mauna Ulu (1)
-
Puu Oo (1)
-
-
-
-
-
-
Owens Valley (1)
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
-
Middle America Trench (1)
-
-
-
North Pacific
-
Northeast Pacific
-
Middle America Trench (1)
-
-
-
-
Puna (1)
-
Quesnellia Terrane (1)
-
Solomon Islands (1)
-
South America
-
Andes
-
Central Andes (1)
-
-
Argentina
-
Catamarca Argentina (1)
-
-
Chile (1)
-
-
United States
-
Arizona
-
Coconino County Arizona
-
Meteor Crater (2)
-
-
San Francisco Peaks (4)
-
-
California
-
Inyo County California
-
Inyo Mountains (1)
-
-
Mammoth Mountain (1)
-
Modoc County California (1)
-
Northern California (1)
-
San Bernardino County California
-
Cima volcanic field (3)
-
Pisgah Crater (1)
-
-
Shasta County California (1)
-
Southern California (3)
-
-
Colorado Plateau (3)
-
Great Basin (3)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
Mauna Kea (1)
-
Mauna Ulu (1)
-
Puu Oo (1)
-
-
-
-
Idaho
-
Butte County Idaho (1)
-
-
Mojave Desert (4)
-
Nevada
-
Nevada Test Site (2)
-
Nye County Nevada
-
Yucca Mountain (1)
-
-
-
New Mexico
-
Jemez Lineament (1)
-
-
Oregon
-
Deschutes County Oregon
-
Newberry Volcano (2)
-
-
-
Southwestern U.S. (1)
-
Utah
-
Washington County Utah (1)
-
-
Walker Lane (1)
-
Western U.S. (1)
-
-
USSR (1)
-
-
commodities
-
metal ores
-
base metals (1)
-
copper ores (1)
-
gold ores (1)
-
silver ores (1)
-
zinc ores (1)
-
-
mineral deposits, genesis (1)
-
mineral exploration (2)
-
-
elements, isotopes
-
carbon
-
C-14 (2)
-
-
chemical ratios (1)
-
halogens
-
chlorine (1)
-
-
hydrogen
-
D/H (1)
-
-
isotope ratios (3)
-
isotopes
-
radioactive isotopes
-
Al-26 (1)
-
Be-10 (1)
-
C-14 (2)
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
-
stable isotopes
-
D/H (1)
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (1)
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (2)
-
-
-
large-ion lithophile elements (1)
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
-
magnesium (1)
-
strontium
-
Sr-87/Sr-86 (2)
-
-
-
aluminum
-
Al-26 (1)
-
-
lead
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
zinc (1)
-
-
oxygen
-
O-18/O-16 (1)
-
-
sulfur
-
S-34/S-32 (1)
-
-
-
geochronology methods
-
Ar/Ar (4)
-
K/Ar (4)
-
paleomagnetism (1)
-
tephrochronology (1)
-
U/Pb (1)
-
U/Th/Pb (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
lower Holocene (1)
-
upper Holocene (1)
-
-
Pleistocene
-
middle Pleistocene (1)
-
upper Pleistocene (1)
-
-
upper Quaternary (5)
-
-
Tertiary
-
Neogene
-
Miocene
-
upper Miocene (1)
-
-
Pliocene
-
lower Pliocene (1)
-
-
-
Paleogene
-
Paleocene
-
lower Paleocene (1)
-
-
-
-
-
Mesozoic
-
Cretaceous
-
Upper Cretaceous (1)
-
-
Jurassic
-
Aztec Sandstone (1)
-
-
-
-
igneous rocks
-
agglutinates (1)
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
lamprophyres
-
minette (1)
-
-
ultramafics
-
peridotites
-
lherzolite (1)
-
spinel lherzolite (1)
-
-
-
-
volcanic rocks
-
andesites (2)
-
basalts
-
alkali basalts
-
alkali olivine basalt (1)
-
-
shoshonite (1)
-
-
basanite (1)
-
dacites (1)
-
glasses
-
obsidian (2)
-
palagonite (1)
-
volcanic glass (2)
-
-
pyroclastics
-
hyaloclastite (1)
-
ignimbrite (1)
-
pumice (1)
-
scoria (12)
-
tuff (5)
-
-
rhyolites (1)
-
trachyandesites
-
absarokite (1)
-
-
trachytes (1)
-
-
-
volcanic ash (3)
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses (1)
-
marbles (1)
-
schists (1)
-
-
-
minerals
-
arsenates (1)
-
borates
-
ludwigite (1)
-
-
copper minerals (1)
-
halides
-
chlorides (1)
-
-
hydrates (1)
-
minerals (1)
-
molybdates
-
powellite (1)
-
-
oxides
-
ferrihydrite (1)
-
hematite (1)
-
magnesioferrite (1)
-
spinel (1)
-
titanium oxides (1)
-
zincite (1)
-
-
phosphates
-
fluorapatite (1)
-
-
silicates
-
chain silicates
-
pyroxene group
-
clinopyroxene
-
diopside (1)
-
-
orthopyroxene (1)
-
-
-
framework silicates
-
feldspar group
-
plagioclase
-
anorthite (1)
-
-
-
zeolite group
-
faujasite (1)
-
-
-
orthosilicates
-
nesosilicates
-
olivine group
-
olivine (3)
-
-
titanite group
-
titanite (1)
-
-
zircon group
-
zircon (1)
-
-
-
-
sheet silicates
-
apophyllite (1)
-
clay minerals
-
smectite (2)
-
-
-
-
sulfates
-
anglesite (1)
-
anhydrite (2)
-
barite (2)
-
langbeinite (1)
-
-
sulfides
-
chalcopyrite (1)
-
sphalerite (1)
-
-
vanadates (2)
-
-
Primary terms
-
absolute age (10)
-
Antarctica
-
Antarctic ice sheet (1)
-
Antarctic Peninsula (1)
-
Victoria Land (1)
-
-
Asia
-
Far East
-
Burma (1)
-
Cambodia (1)
-
China (2)
-
Korea (1)
-
Laos (1)
-
Malaysia (1)
-
Mongolia (1)
-
Thailand (1)
-
Vietnam (1)
-
-
Kamchatka Russian Federation
-
Kamchatka Peninsula
-
Tolbachik (9)
-
-
-
Middle East
-
Turkey (2)
-
-
Russian Pacific region (6)
-
-
Atlantic Ocean
-
North Atlantic
-
Faeroe-Shetland Basin (1)
-
-
-
Atlantic Ocean Islands
-
Canary Islands
-
Tenerife (1)
-
-
-
Canada
-
Western Canada
-
British Columbia (1)
-
Canadian Cordillera (1)
-
Yukon Territory (1)
-
-
-
carbon
-
C-14 (2)
-
-
Cenozoic
-
Quaternary
-
Holocene
-
lower Holocene (1)
-
upper Holocene (1)
-
-
Pleistocene
-
middle Pleistocene (1)
-
upper Pleistocene (1)
-
-
upper Quaternary (5)
-
-
Tertiary
-
Neogene
-
Miocene
-
upper Miocene (1)
-
-
Pliocene
-
lower Pliocene (1)
-
-
-
Paleogene
-
Paleocene
-
lower Paleocene (1)
-
-
-
-
-
Central America
-
Guatemala
-
Pacaya (1)
-
-
Nicaragua (2)
-
-
clay mineralogy (1)
-
crust (2)
-
crystal chemistry (1)
-
crystal growth (1)
-
crystal structure (8)
-
data processing (1)
-
deformation (1)
-
earthquakes (1)
-
East Pacific Ocean Islands
-
Easter Island (1)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
Mauna Kea (1)
-
Mauna Ulu (1)
-
Puu Oo (1)
-
-
-
-
-
education (4)
-
Europe
-
Central Europe
-
Germany
-
Hesse Germany (1)
-
-
-
Southern Europe
-
Italy
-
Sicily Italy
-
Lipari Islands (1)
-
Mount Etna (1)
-
-
-
-
-
faults (7)
-
folds (2)
-
fractures (2)
-
geochemistry (10)
-
geomorphology (11)
-
geophysical methods (1)
-
geosynclines (1)
-
government agencies (1)
-
hydrogen
-
D/H (1)
-
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
lamprophyres
-
minette (1)
-
-
ultramafics
-
peridotites
-
lherzolite (1)
-
spinel lherzolite (1)
-
-
-
-
volcanic rocks
-
andesites (2)
-
basalts
-
alkali basalts
-
alkali olivine basalt (1)
-
-
shoshonite (1)
-
-
basanite (1)
-
dacites (1)
-
glasses
-
obsidian (2)
-
palagonite (1)
-
volcanic glass (2)
-
-
pyroclastics
-
hyaloclastite (1)
-
ignimbrite (1)
-
pumice (1)
-
scoria (12)
-
tuff (5)
-
-
rhyolites (1)
-
trachyandesites
-
absarokite (1)
-
-
trachytes (1)
-
-
-
inclusions
-
fluid inclusions (2)
-
-
intrusions (3)
-
isotopes
-
radioactive isotopes
-
Al-26 (1)
-
Be-10 (1)
-
C-14 (2)
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
-
stable isotopes
-
D/H (1)
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (1)
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (2)
-
-
-
lava (12)
-
magmas (13)
-
mantle (6)
-
maps (1)
-
Mesozoic
-
Cretaceous
-
Upper Cretaceous (1)
-
-
Jurassic
-
Aztec Sandstone (1)
-
-
-
metal ores
-
base metals (1)
-
copper ores (1)
-
gold ores (1)
-
silver ores (1)
-
zinc ores (1)
-
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
-
magnesium (1)
-
strontium
-
Sr-87/Sr-86 (2)
-
-
-
aluminum
-
Al-26 (1)
-
-
lead
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
zinc (1)
-
-
metamorphic rocks
-
gneisses (1)
-
marbles (1)
-
schists (1)
-
-
metamorphism (1)
-
metasomatism (1)
-
Mexico
-
Chihuahua Mexico (1)
-
Jalisco Mexico (1)
-
Mexico state
-
Federal District Mexico
-
Mexico City Mexico (1)
-
-
Nevado de Toluca (2)
-
-
Michoacan-Guanajuato volcanic field (1)
-
Nayarit Mexico (1)
-
Popocatepetl (1)
-
Sonora Mexico (2)
-
Trans-Mexican volcanic belt (5)
-
-
mineral deposits, genesis (1)
-
mineral exploration (2)
-
mineralogy (1)
-
minerals (1)
-
Moon (1)
-
North America
-
Basin and Range Province
-
Great Basin (3)
-
-
Kootenay Arc (1)
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
Rio Grande Rift (1)
-
Slide Mountain Terrane (1)
-
-
ocean floors (1)
-
Oceania
-
Polynesia
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
Mauna Kea (1)
-
Mauna Ulu (1)
-
Puu Oo (1)
-
-
-
-
-
-
orogeny (2)
-
oxygen
-
O-18/O-16 (1)
-
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
-
Middle America Trench (1)
-
-
-
North Pacific
-
Northeast Pacific
-
Middle America Trench (1)
-
-
-
-
paleomagnetism (1)
-
paragenesis (1)
-
petrology (7)
-
phase equilibria (1)
-
plate tectonics (4)
-
remote sensing (2)
-
sea water (1)
-
sea-floor spreading (1)
-
sedimentary rocks
-
carbonate rocks (1)
-
clastic rocks (1)
-
-
sedimentary structures
-
planar bedding structures
-
cross-stratification (1)
-
-
-
sedimentation (3)
-
sediments
-
clastic sediments (1)
-
-
soils (3)
-
Solomon Islands (1)
-
South America
-
Andes
-
Central Andes (1)
-
-
Argentina
-
Catamarca Argentina (1)
-
-
Chile (1)
-
-
sulfur
-
S-34/S-32 (1)
-
-
tectonics (4)
-
tectonophysics (1)
-
thermal waters (1)
-
United States
-
Arizona
-
Coconino County Arizona
-
Meteor Crater (2)
-
-
San Francisco Peaks (4)
-
-
California
-
Inyo County California
-
Inyo Mountains (1)
-
-
Mammoth Mountain (1)
-
Modoc County California (1)
-
Northern California (1)
-
San Bernardino County California
-
Cima volcanic field (3)
-
Pisgah Crater (1)
-
-
Shasta County California (1)
-
Southern California (3)
-
-
Colorado Plateau (3)
-
Great Basin (3)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
Mauna Kea (1)
-
Mauna Ulu (1)
-
Puu Oo (1)
-
-
-
-
Idaho
-
Butte County Idaho (1)
-
-
Mojave Desert (4)
-
Nevada
-
Nevada Test Site (2)
-
Nye County Nevada
-
Yucca Mountain (1)
-
-
-
New Mexico
-
Jemez Lineament (1)
-
-
Oregon
-
Deschutes County Oregon
-
Newberry Volcano (2)
-
-
-
Southwestern U.S. (1)
-
Utah
-
Washington County Utah (1)
-
-
Walker Lane (1)
-
Western U.S. (1)
-
-
USSR (1)
-
volcanology (9)
-
waste disposal (2)
-
weathering (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
carbonate rocks (1)
-
clastic rocks (1)
-
-
siliciclastics (1)
-
volcaniclastics (3)
-
-
sedimentary structures
-
channels (2)
-
mounds (1)
-
sedimentary structures
-
planar bedding structures
-
cross-stratification (1)
-
-
-
-
sediments
-
sediments
-
clastic sediments (1)
-
-
siliciclastics (1)
-
volcaniclastics (3)
-
-
soils
-
soils (3)
-
cinder cones
A temporal dissection of late Quaternary volcanism and related hazards within the Rio Grande rift and along the Jemez lineament of New Mexico, USA
Bakakinite, Ca 2 V 2 O 7 , a new mineral from fumarolic exhalations of the Tolbachik volcano, Kamchatka, Russia
Abstract The Longgang volcanic field (LVF) is a monogenetic volcanic field in China that erupted in the Quaternary, forming more than 100 scoria cones and maars in an area of over 1500 km 2 . The most recent eruption occurred c. 1500–1700 years ago. By summarizing the results of previous and recent research, this paper reviews the geological background, volcano distribution, eruption history, typical volcanoes and geochemical characteristics of the LVF. The volcanic activities in the LVF were structurally controlled by near-EW-, NW- and NE-trending faults. An analysis of typical volcanic edifices reveals that at least two eruptive episodes occurred in the Holocene, and most of the maars in the LVF have characteristics of multiple eruptive styles. It is concluded that the eruption types included effusive eruptions, magma explosive eruptions and phreatomagmatic eruptions. The results of geochemical studies of LVF eruptive products show that most of the rock is trachybasalt and that the magma rarely interacts with crustal rocks. Compared with the previous results for the neighbouring Changbaishan polygenetic volcanic field, the probable origins of their differences in volcanism are discussed.
Chapter 4.1a Antarctic Peninsula: volcanology
Abstract The Antarctic Peninsula is distinguished by late Neogene volcanic activity related to a series of northerly younging ridge crest–trench collisions and the progressive opening of ‘slab windows’ in the subjacent mantle. The outcrops were amongst the last to be discovered in the region, with many occurrences not visited until the 1970s and 1980s. The volcanism consists of several monogenetic volcanic fields and small isolated centres. It is sodic alkaline to tholeiitic in composition, and ranges in age between 7.7 Ma and present. No eruptions have been observed (with the possible, but dubious, exception of Seal Nunataks in 1893) but very young isotopic ages for some outcrops suggest that future eruptions are a possibility. The eruptions were overwhelmingly glaciovolcanic and the outcrops have been a major source of information on glaciovolcano construction. They have also been highly influential in advancing our understanding of the configuration of the Plio-Pleistocene Antarctic Peninsula Ice Sheet. However, our knowledge is hindered by a paucity of modern, precise isotopic ages. In particular, there is no obvious relationship between the age of ridge crest–trench collisions and the timing of slab-window volcanism, a puzzle that may only be resolved by new dating.
ABSTRACT Arizona has a wide variety of geological features relevant to planetary geology. The “Holey Tour” is a 2 d field trip (Phoenix-Flagstaff-Phoenix) that introduces participants to crater forms (hence the “holes” of the tour), including a maar, karst sinkhole, pit crater, cinder-cone craters, a volcano-tectonic depression, and the classic impact structure Meteor Crater. The Apollo astronaut field training site near Flagstaff is examined, which includes a terrain that was artificially generated to simulate a cratered lunar surface. In addition, planetary volcanism is discussed with stops that include a shield volcano, composite cone, silicic dome, and cinder cones; considerations include key variables in volcanic morphology, such as lava composition and rates of effusion. The general geology of Arizona is discussed throughout the trip and includes parts of the Colorado Plateau, the Basin and Range Province, and the Central Highlands (also called the “transition” zone). The trip can be adapted to meet the needs of any group, from secondary school students to established planetary scientists. This field trip generally follows the GSA guide published in GSA Special Paper 483 (available at https://pubs.geoscienceworld.org/gsa ): Greeley, R., 2011, The “Holey Tour” planetary geology field trip, Arizona, in Garry, W.B., and Bleacher, J.E., eds., Analogs for Planetary Exploration: Geological Society of America Special Paper 483, p. 377–391, https://doi.org/10.1130/2011.2483(23) .
Mineralization and Alteration of a Modern Seafloor Massive Sulfide Deposit Hosted in Mafic Volcaniclastic Rocks
Mantle source heterogeneity in monogenetic basaltic systems: A case study of Eğrikuyu monogenetic field (Central Anatolia, Turkey)
Ozerovaite, Na 2 KAl 3 (AsO 4 ) 4 , new mineral species from Tolbachik volcano, Kamchatka peninsula, Russia
Subplinian monogenetic basaltic eruption of Sunset Crater, Arizona, USA
Belousovite, KZn(SO 4 )Cl, a new sulfate mineral from the Tolbachik volcano with apophyllite sheet-topology.
Dravertite, CuMg(SO 4 ) 2 , a new mineral species from the Tolbachik volcano, Kamchatka, Russia
3D seismic imaging of the shallow plumbing system beneath the Ben Nevis Monogenetic Volcanic Field: Faroe–Shetland Basin
Late Miocene upper-crustal deformation within the interior of the southern Puna Plateau, central Andes
Kaliochalcite, KCu 2 (SO 4 ) 2 [(OH)(H 2 O)], a new tsumcorite-group mineral from the Tolbachik volcano, Kamchatka, Russia
Nicksobolevite, Cu 7 (SeO 3 ) 2 O 2 Cl 6 , a new complex copper oxoselenite chloride from Tolbachik fumaroles, Kamchatka peninsula, Russia
Volcanism and glacial interaction in the Wells Gray–Clearwater volcanic field, east-central British Columbia
Abstract This field guide describes a three-day trip from Vancouver, British Columbia, to the Wells Gray–Clearwater volcanic field (WGCVF) in east-central British Columbia. The WGCVF is the site of transitional to alkali olivine basaltic volcanism erupted over the last three million years. The small volume magmas (<1 km 3 ) erupted along preexisting normal faults related to the late stages of Cordilleran terrane amalgamation, along the boundary between the miogeoclinal and pericratonic rocks of the Kootenay terrane and the allochthonous Slide Mountain and Quesnellia terranes west of ancestral North America. The magmas are highly enriched in incompatible elements, especially large-ion lithophile elements, and are interpreted as the result of low degrees of partial melting of a heterogeneous, metasomatized mantle. Upon ascent through the crust, they carried up both crustal and mantle xenoliths. During the eruptive period of the WGCVF, at least four glacial periods have occurred. The interplay between volcanism and glaciation is captured in the wide range of volcanic features found in the region. Field trip participants will view numerous diverse volcanic landforms and deposits: from tuyas to ice-marginal valley-edge deposits, volcanoclastic-lacustrine deposits, and associated pillow lavas and hyaloclastites.
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.
Cupromolybdite, Cu 3 O(MoO 4 ) 2 , a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia
Arizona has a wide variety of geological features relevant to planetary geology. The “Holey Tour” is a 2 d field trip (Phoenix-Flagstaff-Phoenix) that introduces participants to crater forms (hence the “holes” of the tour), including a maar, karst sinkhole, pit crater, cinder-cone craters, a volcano-tectonic depression, and the classic impact structure Meteor Crater. The Apollo astronaut field training site near Flagstaff is examined, which includes a terrain that was artificially generated to simulate a cratered lunar surface. In addition, planetary volcanism is discussed with stops that include a shield volcano, composite cone, silicic dome, and cinder cones; considerations include key variables in volcanic morphology, such as lava composition and rates of effusion. The general geology of Arizona is discussed throughout the trip and includes parts of the Colorado Plateau, the Basin and Range Province, and the Central Highlands (also called the “transition” zone). The trip can be adapted to meet the needs of any group, from secondary school students to established planetary scientists.
We have organized ten National Aeronautics and Space Administration (NASA)–sponsored planetary volcanology field workshops on Hawai‘i since 1992, providing an opportunity for almost 140 NASA-funded graduate students, postdocs, and junior faculty to view basaltic volcano features up close in the company of both terrestrial and planetary volcanologists. Most of the workshops have been thematic, for example, concentrating on large structural features (rift zones and calderas) or lava flows, or features best viewed in high-spatial-resolution data, but they always include a broad set of topics. The workshops purposely involve long field days—an appreciation of scale is important for planetary scientists, particularly if they are or will be working with slow-moving rovers. Our goals are to give these young scientists a strong background in basaltic volcanology and provide the chance to view eruptive and volcano-structural features up close so that they can compare the appearance of these features in the field to their representations in state-of-the-art remote-sensing images, and relate them in turn to analogous planetary features. In addition, the workshop enables the participants to start a collection of field photographs and observations that they can use in future research and teaching. An added benefit is that the participants interact with each other, forging collaborations that we hope will persist throughout their careers.