F9 - Fm. Tordillo (Loncopué)

Description

Sandstone composed mainly of quartz, feldspars and, to a lesser extent, mafic minerals. It has two different sectors: In the lower area it is a fine brown sandstone with parallel lamination. The laminas become thicker upwards. The upper zone is a medium to coarse sandstone with claychips of reddish and green tones.