Seismicity and tectonics of the blue ridge area of the Mogollon Plateau, Arizona

David S. Brumbaugh

doi:10.1785/0120060196

Seismicity and tectonics of the blue ridge area of the Mogollon Plateau, Arizona

David S. Brumbaugh

Earth and Sustainability

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The seismicity of the Blue Ridge area of the Mogollon Plateau exists within a framework of Tertiary volcanics and normal faulting. The seismicity includes earthquake sequences in 1989 and 2005 with principal events as large as Richter local magnitude (M_L) 4.6 (National Earthquake Information Center [NEIC]). Analysis of this seismicity indicates that it is characterized by normal faulting on northwest-trending planes. The normal faults form part of the Cataract Creek fault system that has historically generated earthquakes as large as surface wave magnitude (M_S) 6.2 (Brumbaugh, 1991; Bausch and Brumbaugh, 1997). Regionally these northwest-trending fracture systems/faults of the southern Colorado plateau appear to pose the greatest seismic hazard to the Grand Canyon National Park with almost five million visitors per year and the rapidly growing Flagstaff area.

Original language	English (US)
Pages (from-to)	1527-1534
Number of pages	8
Journal	Bulletin of the Seismological Society of America
Volume	98
Issue number	3
DOIs	https://doi.org/10.1785/0120060196
State	Published - Jun 2008

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology

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abstract = "The seismicity of the Blue Ridge area of the Mogollon Plateau exists within a framework of Tertiary volcanics and normal faulting. The seismicity includes earthquake sequences in 1989 and 2005 with principal events as large as Richter local magnitude (ML) 4.6 (National Earthquake Information Center [NEIC]). Analysis of this seismicity indicates that it is characterized by normal faulting on northwest-trending planes. The normal faults form part of the Cataract Creek fault system that has historically generated earthquakes as large as surface wave magnitude (MS) 6.2 (Brumbaugh, 1991; Bausch and Brumbaugh, 1997). Regionally these northwest-trending fracture systems/faults of the southern Colorado plateau appear to pose the greatest seismic hazard to the Grand Canyon National Park with almost five million visitors per year and the rapidly growing Flagstaff area.",

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Seismicity and tectonics of the blue ridge area of the Mogollon Plateau, Arizona

Abstract

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