Archaeological Landscape (Other Keyword)
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The Distinctive Archaeological Landscape of the El Malpais National Monument Lava Flows (2015)
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El Malpais National Monument, located at the edge of the Colorado Plateau near the southern boundary of the San Juan Basin, was established to protect the rich diversity of volcanic geologic features that produced one of the longest sequences of volcanic activity in the United States – from about 700,000 to 3,000 years ago. Known collectively as the Grants Lava Flow, there are over nine lava flows each creating a new land surface with lava-influenced environmental conditions. The interaction...