Lava Flow Lengths and Historic Eruptive Parameters: Implications for the Volcanic History of the Batamote Mountains, Ajo, Arizona

Details Lava Flow Lengths and Historic Eruptive Parameters: Implications for the Volcanic History of the Batamote Mountains, Ajo, Arizona Lava Flow Lengths and Historic Eruptive Parameters: Implications for the Volcanic History of the Batamote Mountains, Ajo, Arizona

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.v53c1758b&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #V53C-1758

Other

5480 Volcanism (6063, 8148, 8450), 8429 Lava Rheology And Morphology, 8450 Planetary Volcanism (5480, 6063, 8148), 8485 Remote Sensing Of Volcanoes, 8486 Field Relationships (1090, 3690)

Scientific paper

Lava flow lengths and morphology depend on (1) initial viscocity, (2) rate of effusion, (3) total volume of lava extruded, (4) duration of extrusion, (5) slope of underlying surface, (6) topography, (7) rate of cooling, (8) formation of crust, and (9) other special circumstances such as ponding and flowing into water. Lava flow lengths and assumptions on lava type contain all the information needed to make educated constraints on the eruptive history of a particular volcano. By no means is this a definitive claim of eruptive histories based on present day observations, but an approximation of what might have occurred may be obtained. Lava flow lengths were measured in the Batamote Mountains in Ajo, Arizona and it was determined that this 18 million year old shield volcano erupted with effusion rates of 5 to 10 cubic meters per second, volumes of 0.00001 cubic kilometers, eruption durations on the order of days, lava yield strengths of 5000 Pa, and flow thicknesses of approximately 3 to 6 meters. These calculations add to the body of knowledge covering Arizona historical volcanism and related Basin and Range extension, but conflict with observations of basaltic volcanic fields in this region.

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