Monday, June 22, 2015

Angular Unconformity, North Shore Drive, Lake Mead National Recreation Area, Nevada

Angular unconformity and Lava Butte 
Angular unconformity and Lava Butte by C Shroba

Angular unconformity between dipping Miocene basin-fill strata and Pleistocene alluvium. In the background, 13-million-year-old dacite intrusion known locally as Lava Butte.

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