Geochemistry of the andesite flank lavas of three composite cones within the Atitlán Cauldron, Guatemala

Rose, William I.; Penfield, G. T.; Drexler, John W.; Larson, Peter B.

doi:10.1007/bf02597617

Cited by 23 publications

(1 citation statement)

References 23 publications

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“…The silicic deposits of these calderas provide a complex stratigraphic record that intercalates between adjacent silicic centers and late Quaternary arc-front composite volcanoes (Fig. 2;Koch and McLean 1975; Table 1 Rose et al 1980;Carr et al 1981). Except for their spatial positions, the relationships (i.e., shared plumbing systems) between the silicic volcanic centers and the volcanic front are not well known.…”

Section: Introductionmentioning

confidence: 99%

An improved age framework for late Quaternary silicic eruptions in northern Central America

Rose¹,

Conway

Pullinger³

et al. 1999

Bulletin of Volcanology

107

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Five new stepwise-heating 40 Ar/ 39 Ar ages and one new high-sensitivity 14 C date of ash-fall and ash-flow deposits from late Quaternary silicic volcanoes in northern Central America document the eruption rates and frequencies of five major rhyodacite and rhyolite calderas (Atitlán, Amatitlán, Ayarza, Coatepeque, and Ilopango) located north of the basalt, andesite, and dacite stratovolcanoes of the Central American volcanic front. These deposits form extensive timestratigraphic horizons that intercalate regionally, and knowledge of dates and stratigraphy provides a valuable framework for age determinations of more localized volcanic and nonvolcanic events. The new data, especially when integrated with previous stratigraphic and dating work, show that all five calderas erupted several times in the past 200 ka and, despite a lack of historic activity, should be considered as active centers that could produce highly explosive eruptions again. Because of their locations near the highly vulnerable economic hearts of Guatemala and El Salvador, the risks of eruptions from these calderas should be carefully considered along with risks of major earthquakes and volcanic front volcanoes, which are much more frequent but inflict less severe and extensive damage. This Fig. 1 Location map showing late Quaternary calderas of northern Central America investigation also includes some examples of dating efforts that failed to produce reasonable results.

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Section: Introductionmentioning

confidence: 99%

An improved age framework for late Quaternary silicic eruptions in northern Central America

Rose¹,

Conway

Pullinger³

et al. 1999

Bulletin of Volcanology

107

View full text Add to dashboard Cite

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Common Characteristics of Paired Volcanoes in Northern Central America

Halsor¹,

Rose²

1989

Collected Reprint Series

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Four pairs of active volcanoes along the northern Central American volcanic front have erupted basalt-andesite magmas that show consistent intrapair behavioral and compositional differences. These differences are found in records of volcanic activity and complete major and minor element data on over 200 samples. From northwest to southeast along the volcanic front the four volcano pairs are Cerro Quemado-Santa Maria, Tolim•n-Atitl•n, Acatenango-Fuego, and Santa Ana-Izalco. The volcano pair relations help explain compositional differences, apart from those reflecting variation in crustal thickness of about 15 km Sciences,

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Volcanoes, Volcanic Rocks and Magma Chambers

Fisher

Schmincke

1984

Pyroclastic Rocks

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Geochemistry of the andesite flank lavas of three composite cones within the Atitlán Cauldron, Guatemala

Cited by 23 publications

References 23 publications

An improved age framework for late Quaternary silicic eruptions in northern Central America

An improved age framework for late Quaternary silicic eruptions in northern Central America

Common Characteristics of Paired Volcanoes in Northern Central America

Volcanoes, Volcanic Rocks and Magma Chambers

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