The pyroclastic dikes of the Tertiary San Luis Potosí volcanic field: Implications on the emplacement of Panalillo ignimbrite

Pyroclastic dikes emplaced along regional NW–SE faults in the Tertiary San Luis Potosí Volcanic Field consist of vitric pumice shards, rhyolite lithics, and broken crystals of quartz, sanidine, and biotite. These clasts display a parallel orientation inside the dikes and have developed devitrificati...

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Bibliographic Details
Authors: Torres-Hernández, José Ramón, Labarthe-Hernández, Guillermo, Aguillón-Robles, Alfredo, Gómez–Anguiano, Martín, Mata-Segura, José Luis
Format: article
Status:Published version
Publication Date:2006
Country:México
Institution:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repository:Geofísica Internacional
Language:Spanish
English
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/337
Online Access:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/337
Access Level:Open access
Keyword:Dique piroclástico
ignimbrita Panalillo
tectónica
volcanismo
San Luis Potosí
Terciario
cerámicas, Mesoamérica
Pyroclastic dike
Panalillo ignimbrite
tectonics
volcanism
Tertiary
coherency
Description
Summary:Pyroclastic dikes emplaced along regional NW–SE faults in the Tertiary San Luis Potosí Volcanic Field consist of vitric pumice shards, rhyolite lithics, and broken crystals of quartz, sanidine, and biotite. These clasts display a parallel orientation inside the dikes and have developed devitrification structures after emplacement.The presence of these pyroclastic dikes associated to normal faults and their relation to the Oligocene pyroclastic sequences of the San Luis Potosí Volcanic Field suggests that they may represent the feeding conduits from which the Panalillo ignimbrite was erupted.

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