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Franciscan pillow basalts crop out at the mouth of the Big Sur River in Andrew Molera State Park. The pillow basalts represent lavas erupted underwater, probably at a mid-ocean ridge or other deep-sea setting, that were scraped up onto the continent at a convergent margin. Nearby radiolarian chert indicates the deep-se...
Known as the 'White Dove of the Desert', this Southwest Jesuit mission was founded in 1692 as part of New Spain, it was transferred to the Franciscan missionaries around 1768 and shortly thereafter it was destroyed by Indians. Located 9 miles South of Tucson, the current church was rebuilt in 1793 and is the oldest in...