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Patula (8%, “Arcosa Patula; 5%, Fm. La Casita; Figura 3; Tabla 1), y (2) Plagioclasas<br />

subredon<strong>de</strong>adas, exhibiendo un maclado <strong>de</strong> tipo polisintético y alterando generalmente a sericita.<br />

El contenido <strong>de</strong> plagioclasas es comparable en ambas formaciones (~16%; Tabla 1). Los<br />

fragmentos líticos volcánicos son subredon<strong>de</strong>ados─redon<strong>de</strong>ados, mostrando en or<strong>de</strong>n <strong>de</strong><br />

abundancia las siguientes texturas: (i) texturas volcánicas tobaceas ([0.1%, Arcosa Patula];<br />

[3.7%, Fm. La Casita]; (ii) textura volcánica felsítica ([.1%, Arcosa Patula]; [0.1%, Fm. La<br />

Casita]); (iii) volcánicas lathwork ([0.01%, Arcosa Patula]; [0.5%, Fm. La Casita]); y (iv)<br />

volcánicas microlíticas ([0.01%, Arcosa Patula]; [

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