The explosive outburst at Novarupta (Alaska) in June 1912 was the 20th century's most voluminous volcanic eruption. Marking its centennial, we illustrate and document ... Petrological correlation of the sequence of deposits near Novarupta with ash layers at Kodiak village, 170 km ... 10 km east of the eruption site at Novarupta, owing to drainage of magma from beneath the ... are intercalated with the pumice-fall layers from Novarupta. Structure of the Novarupta vent, a 2-km-wide depression backfilled by ... the several andesite-dacite stratovolcanoes, closely clustered near Novarupta, all of which remain fumarolically and seismically active, ...
Tópico(s): History of Science and Natural History
2012 - United States Government Publishing Office | USGS professional paper
Helge Torgersen, B. F. Houghton,
... in dacite from the 1912 Plinian eruption of Novarupta, Alaska. Bubble growth calculations account for the exsolution ... reproduced the observed size distribution of vesicles in Novarupta pumice clasts. Assuming classical nucleation theory, bubbles nucleated ... the typical range of vesicle sizes found in Novarupta pumice. The smallest vesicles in Novarupta pumices are also the most abundant and bubbles ... volatiles had exsolved. Unless the matrix glasses of Novarupta pyroclasts retains a large fraction of pre‐eruptive ...
Tópico(s): Mineralogy and Gemology Studies
2012 - Wiley | Geochemistry Geophysics Geosystems
... 1912 plinian pumice‐fall deposits that originated at Novarupta 10 km away, demonstrating that caldera collapse at Katmai and eruption at Novarupta were synchronous. Emplaced by phreatic explosions and avalanche‐ ... plinian Layers A‐G decrease radially away from Novarupta. The first Katmai‐derived layer lies between Novarupta‐derived Layers B 2 and B 3 , indicating ... release of ∼6.9 km³ of magma at Novarupta. The first major earthquake ( M s =6.5) ...
Tópico(s): High-pressure geophysics and materials
1991 - American Geophysical Union | Geophysical Research Letters
... eruption of the 20th century broke out at Novarupta (fig. 1) in June 1912, filling with hot ... combined. Although almost all the magma vented at Novarupta, most of it had been stored beneath Mount ... great eruption of 1912 focused scientific attention on Novarupta, and subsequent research there has taught us much ... 20 discrete volcanic vents within 15 km of Novarupta (Hildreth and others, 1999, 2000, 2001; Hildreth and ... Volcano; Snowy Mountain; and the three lava domes Novarupta, Mount Cerberus, and Falling Mountain. The most recent ...
Tópico(s): Landslides and related hazards
2000 - United States Department of the Interior | Antarctica A Keystone in a Changing World
... of Hg° was designed to model the 1912 Novarupta vent structure and delineate zones of near-surface ... Hg° anomalies (contrast values > 1.5) occur within Novarupta Basin. High-magnitude, active Hg2 enrichment was found ... Turtle, a dome-like feature northeast of the Novarupta extrusive dome. The Hg° data, coupled with available ... shallow intrusion beneath the Turtle. Results from two Novarupta Basin sample traverses do not support the presence ... the proposed intrusion beneath the Turtle with the Novarupta dome. Based on the Hg° data, the preferred ...
Tópico(s): Isotope Analysis in Ecology
1989 - Elsevier BV | Journal of Volcanology and Geothermal Research
C. T. Nguyen, Helge Torgersen, B. F. Houghton,
... the largest volcanic eruption of the 20th century (Novarupta 1912, Alaska) Chinh T. Nguyen; Chinh T. Nguyen * ... the largest volcanic eruption of the 20th century (Novarupta 1912, Alaska). Geology 2014;; 42 (8): 703–706. ... samples from the A.D. 1912 eruption of Novarupta volcano, Alaska, and analyzed them within the context ...
Tópico(s): High-pressure geophysics and materials
2014 - Geological Society of America | Geology
N. K. Adams, Bernadette Houghton, S. A. Fagents, Wes Hildreth,
... effusive eruptive regime: The example of the 1912 Novarupta eruption, Alaska Nancy K. Adams; Nancy K. Adams ... effusive eruptive regime: The example of the 1912 Novarupta eruption, Alaska. GSA Bulletin 2006;; 118 (5-6): ... of the twentieth century, the 1912 eruption of Novarupta. The transition is recorded in a dacite block ...
Tópico(s): High-pressure geophysics and materials
2006 - Geological Society of America | Geological Society of America Bulletin
Michelle L. Coombs, James E. Gardner,
... for the rhyolite of the 1912 eruption at Novarupta, Alaska Michelle L. Coombs; Michelle L. Coombs 1Alaska ... for the rhyolite of the 1912 eruption at Novarupta, Alaska. Geology 2001;; 29 (9): 775–778. doi: ... plumbing system that fed the 1912 eruption of Novarupta, Alaska. Here, we investigate the conditions under which ...
Tópico(s): Geochemistry and Geologic Mapping
2001 - Geological Society of America | Geology
... ejecta a flaring funnel-shaped vent since called Novarupta. The vent is adjacent to a cluster of ... summit of Mount Katmai, 10 km east of Novarupta, that collapsed during the eruption to form a ... are compositionally distinguishable from those of 1912 at Novarupta. Holocene products of Mount Martin and Trident are ... that any 1912 magma had been stored beneath Novarupta or Trident, and there is no evidence that ...
Tópico(s): earthquake and tectonic studies
2000 - Geological Society of America | Geological Society of America Bulletin
... distinguished in the vicinity of Mount Katmai and Novarupta. These were products of the 1912 eruption, and ... five layers show conclusively that they originated at Novarupta; while the thickness and coarseness of the other — ... not have come from Mount Katmai, and that Novarupta is very probably its source also.
Tópico(s): Cryospheric studies and observations
1968 - Geological Society of America | Memoir - Geological Society of America
Rachel Murphy, C. H. Thurber, S. G. Prejean, N. L. Bennington,
... four distinct zones associated with Martin, Mageik, Trident-Novarupta, and Mount Katmai. The seismic activity extends from ... and 4 km depth below Katmai and Trident-Novarupta. Many new features are apparent within these earthquake ... no clear evidence for magma beneath the Katmai-Novarupta area where the 1912 eruptive activity occurred, suggesting ...
Tópico(s): Geological and Geochemical Analysis
2014 - Elsevier BV | Journal of Volcanology and Geothermal Research
K. X. Whipple, Noah P. Snyder, Kate Dollenmayer,
... by the Upper Ukak River since the 1912 Novarupta ash flow in the Valley of Ten Thousand ... by the Upper Ukak River since the 1912 Novarupta ash flow in the Valley of Ten Thousand ...
Tópico(s): Geological formations and processes
2000 - Geological Society of America | Geology
The three-day eruption at Novarupta in 1912 consisted of three discrete episodes. Episode I began with plinian dispersal of rhyolitic fallout (Layer A) and contemporaneous emplacement ... Episode I), into which the rhyolitic lava dome (Novarupta) was still later extruded. Two finer-grained ash ...
Tópico(s): Atmospheric and Environmental Gas Dynamics
1992 - Springer Science+Business Media | Bulletin of Volcanology
During June 6–8, 1912, a new vent (Novarupta) near Mt. Katmai in the Aleutian Range of ... explosive volcanism, through an interdisciplinary investigation of the Novarupta Vent and fissure fumaroles present in the ash-flow sheet. Novarupta Vent represents a unique target for subsurface geophysical ...
Tópico(s): Geochemistry and Elemental Analysis
1992 - Elsevier BV | Geochimica et Cosmochimica Acta
Brad S. Singer, Fidel Costa, J. S. Herrin, Wes Hildreth, Judy Fierstein,
... km3 of dense rock equivalent (DRE) magma at Novarupta vent, Alaska was the largest of the 20th ...
Tópico(s): earthquake and tectonic studies
2016 - Elsevier BV | Earth and Planetary Science Letters
... of 1912 (which vented 10 km away at Novarupta in the Valley of Ten Thousand Smokes), but ... 13.5 km3 of magma that erupted at Novarupta in 1912, all or much of which is ...
Tópico(s): Geological Studies and Exploration
2012 - Geological Society of America | Geosphere
Richard J. Payne, Elías Symeonakis,
The eruption of Novarupta within the Katmai Volcanic Cluster, south-west Alaska, in June 1912 was the most voluminous eruption of the twentieth ...
Tópico(s): Tree-ring climate responses
2012 - Springer Science+Business Media | Bulletin of Volcanology
Simon Turner, Mike Sandiford, Mark K. Reagan, Chris Hawkesworth, Wes Hildreth,
... and numerical modeling study of the 1912 Katmai‐Novarupta eruption in Alaska. A stratigraphically constrained set of ...
Tópico(s): High-pressure geophysics and materials
2010 - American Geophysical Union | Journal of Geophysical Research Atmospheres
A. D. Jolly, S. C. Moran, Stephen R. McNutt, David B. Stone,
... of the Katmai volcanoes; Martin, Mageik, Trident, Griggs, Novarupta, Snowy, and Katmai caldera. The inversion reduced the ... rock at shallow depths beneath the Mageik–Katmai–Novarupta region. Moderately low velocities beneath Martin and Katmai ...
Tópico(s): Seismic Waves and Analysis
2006 - Elsevier BV | Journal of Volcanology and Geothermal Research
... seismic events. With the exception of Martin and Novarupta volcanoes, the other 20 volcanoes showed no changes ... observed at other volcanic systems such as Martin-Novarupta, Mt. Rainier, Yellowstone, Mammoth Mountain, and The Geysers, ...
Tópico(s): Seismic Waves and Analysis
2004 - Seismological Society of America | Bulletin of the Seismological Society of America
James P. Dixon, Scott D. Stihler, John A. Power, Guy Tytgat, S. C. Moran, John J. Sánchez, Steve Estes, Stephen R. McNutt, J. F. Paskievitch,
... Volcanic Group (Snowy Mountain, Mount Griggs, Mount Katmai, Novarupta, Trident Volcano, Mount Mageik, Mount Martin), Aniakchak Crater, ... Volcanic Group (Snowy Mountain, Mount Griggs, Mount Katmai, Novarupta, Trident Volcano, Mount Mageik, Mount Martin), Aniakchak Crater, ...
Tópico(s): High-pressure geophysics and materials
2003 - United States Department of the Interior | Antarctica A Keystone in a Changing World
Judy Fierstein, B. F. Houghton, Colin Wilson, Wes Hildreth,
... later-stage plinian fall activity during the 1912 Novarupta eruption in Alaska. One bed in the ejecta ...
Tópico(s): Geological formations and processes
1997 - Elsevier BV | Journal of Volcanology and Geothermal Research
... 12 km west of Mount Katmai, near the Novarupta dome. Origin times, surface-wave magnitudes Ms , and ... of supporting magma from beneath Mount Katmai toward Novarupta.
Tópico(s): Geological and Geochemical Analysis
1992 - Seismological Society of America | Bulletin of the Seismological Society of America
Peter C. Wallmann, David D. Pollard, Wes Hildreth, J. C. Eichelberger,
... Advanced Search Abstract New structural data from the Novarupta basin, Katmai National Park, Alaska, site of the ... a monoclinal fold, and truncated ridges circumscribe the Novarupta basin, marking the inferred outer rim of the ...
Tópico(s): Cryospheric studies and observations
1990 - Geological Society of America | Geology
Alan N. Federman, K.F. Scheidegger,
... of distal tephra from the 1912 eruption of Novarupta, Alaska, show considerable variations in glass and mineral ...
Tópico(s): High-pressure geophysics and materials
1984 - Elsevier BV | Journal of Volcanology and Geothermal Research
P. Kasameyer, Michael Wilt, William Daily, D. Felske,
... electromagnetic survey was conducted near the rhyolite dome Novarupta. We found a continuous (60 to 100 m ... thin areas lie under the tephra ring surrounding Novarupta, where the altered zones extend to a depth ...
Tópico(s): Geochemistry and Geologic Mapping
1991 - American Geophysical Union | Geophysical Research Letters
Secondary mineralogy in the 1912 vent region at Novarupta illustrates an alteration history that evolved from high‐ ...
Tópico(s): Clay minerals and soil interactions
1991 - American Geophysical Union | Geophysical Research Letters
Tim R. Orr, Cheryl E. Cameron, Hannah R. Dietterich, James P. Dixon, M. Enders, Ronni Grapenthin, Alexandra M. Iezzi, Matthew W. Loewen, John A. Power, Cheryl Searcy, Gabrielle Tepp, Liam Toney, Christopher F. Waythomas, A. Wech,
... Mount Martin; and resuspended ash from the 1912 Novarupta-Katmai eruption deposits.
Tópico(s): Cryospheric studies and observations
2023 - United States Geological Survey | Scientific investigations report
James P. Dixon, Cheryl E. Cameron, Alexandra M. Iezzi, John A. Power, Kristi L. Wallace, Christopher F. Waythomas,
... at Iliamna Volcano, resuspended ash from the 1912 Novarupta-Katmai eruption, and continuing inflation at Okmok Caldera.
Tópico(s): Geological and Geochemical Analysis
2020 - United States Geological Survey | Scientific investigations report
Vicken Etyemezian, John A. Gillies, Larry G. Mastin, Alice Crawford, Richard C. Hasson, Alexa R. Van Eaton, George Nikolich,
... Mount St. Helens and the 1912 eruption of Novarupta, in Alaska's Valley of Ten Thousand Smokes. ...
Tópico(s): Fire effects on ecosystems
2019 - Wiley | Journal of Geophysical Research Atmospheres