THE RECENT ERUPTION OF LASCAR VOLCANO (AT ACAMA-CHILE, APRIL 1993) - PETROLOGICAL AND VOLCANOLOGICAL RELATIONSHIPS

Authors
DERUELLE B MEDINA ET FIGUEROA OA MARAGANO MC VIRAMONTE JG
Citation
B. Deruelle et al., THE RECENT ERUPTION OF LASCAR VOLCANO (AT ACAMA-CHILE, APRIL 1993) - PETROLOGICAL AND VOLCANOLOGICAL RELATIONSHIPS, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 321(5), 1995, pp. 377-384
Citations number
25
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
321
Issue
5
Year of publication
1995
Pages
377 - 384
Database
ISI
SICI code
1251-8050(1995)321:5<377:TREOLV>2.0.ZU;2-3
Abstract
Lascar Volcano (Atacama, Chile) erupted on 18-20 April 1993. Several s ubplinian explosions occurred. The highest column rose up to 22 km. As h clouds crossed South America. Blocks and ashes of dacitic pumice wer e deposited on the flanks of the volcano. The previous andesite dome i nside the crater was destroyed. Banded blocks resulting from mingling of the pumice and andesite are found in the pumice flow. Both the lava dome and the pumice are representative of the Lascar high-K magma uni t. Pumice is a product of crystal fractionation of the andesitic magma .