. Boletín. Fot. 5.—Arroyo del Saltito, bancos de diorita y planos de juntas. Fot. 6.—Arroyo de la Cantería, depósitos sedimentariüs, terminando en su parte superior por una capa de toba rhyolítica. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Instituto Geológico de México; Universidad Nacional de México. Instituto de Geología. México : Instituto

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1918