Document
type: Class

Journal of Volcanology and Geothermal Research
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type: Generically Dependent Continuant
type: Information Content Entity
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publication venue for: Field observations of pristine block- and ash-flow deposits emplaced April 16-17, 1991 at Volcán de Colima, Mexico
type: Document
type: Periodical

Field observations of pristine block- and ash-flow deposits emplaced April 16-17, 1991 at Volcán de Colima, Mexico
type: Continuant
abstract: For the first time since the effusive activity of 1981-1982, Volcán de Colima extruded scoriaceous andesitic lava on March 1 1991. This followed a period of increasing seismicity, summit dome deformation, and fumarolic activity that began in February of 1991. Growth of the new lava dome proceeded until April 16 at 16:00 hrs (local time, GMT -6 hours), when a series of gravitational failures of the upper edifice and the new lava dome-flow triggered the emplacement of successive small-volume, non-glowing, block- and ash-flows to a distance of 4 km within the upper reaches of Barranca El Cordobán, south-southwest of the present summit. Aerial photos taken at the time of the event clearly show the lack of explosions at the summit dome. Efficient elutriation of the finest silt and clay-sized fraction from the main body of the avalanching material produced large reddish, yellowish, and grayish ash clouds which rose to an altitude of 1.5-2.5 km for several hours and were carried southeast to northeast by predominant winds. Vegetation in the path of the debris was totally stripped, sand-blasted, and bent in the sense of flowage but was not burnt. No fatalities were reported. We present a summary of our field observations of the pristine deposits which we studied prior the rainy season, on April 20-27 between 2,200 and 2,500 m elevation. © 1991.
doi: 10.1016/0377-0273(91)90054-4
date time value: article date 303
freetext keyword: ash flow deposit; debris flow; eruption product; field observation; Volcan de Colima eruption April 1991; volcanism; Mexico, Colima, Volcan de Colima
origen: scopus
estado: published
most specific type: Document
type: Information Content Entity
type: Generically Dependent Continuant
volume: 48
type: Entity
type: Document
page start: 399
issue: 3-4
most specific type: Article
crisid: 303
related by: authorship 1288
related by: authorship 1290
type: Thing
related by: authorship 1289
related by: authorship 1291
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has publication venue: Journal of Volcanology and Geothermal Research
e iscopus: 2-s2.0-0026278076
related by: authorship 1287
page end: 412

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RDF description of Field observations of pristine block- and ash-flow deposits emplaced April 16-17, 1991 at Volcán de Colima, Mexico - http://orbis.uaslp.mx/vivo/individual/scopus302
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date: 2026-08-27T06:36:01
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