Elastic source model of the North Mono eruption (1325–1368 A.D.) based on shoreline deformation

Shaffer, Wil; Bursik, Marcus; Renshaw, Carl E.

doi:10.1007/s00445-010-0385-4

Cited by 2 publications

(1 citation statement)

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“…This difference in dome ages is consistent with at least two episodes of intrusion. Observations of recent high‐level silicic intrusions and eruptions indicate that activity frequently involves a complex series of events (Castro et al., 2016; Jay et al., 2014; Miller et al., 2017; Shaffer et al., 2010). If the intrusions in the BRVF formed coeval with the effusion of the domes, similar to the high‐level intrusion at Cordón Caulle (Castro et al., 2016), then it is likely that the northern intrusion was emplaced, in a separate event, prior to the southern intrusion.…”

Section: Discussionmentioning

confidence: 99%

Large‐Volume and Shallow Magma Intrusions in the Blackfoot Reservoir Volcanic Field (Idaho, USA)

et al. 2021

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Bimodal volcanic fields comprise multiple vents that have erupted basalt and dacite to rhyolite with no intermediate compositions (Bacon, 1982;Suneson, 1983;Tanaka et al., 1986). Silicic eruptions in bimodal volcanic fields have potentially unexpected impacts as these eruptions are not associated with long-lived or frequently active volcanic systems. Yet, these eruptions tend to be more intense, voluminous and of longer duration than basaltic counterparts (Connor et al., 2009;Sparks, 2003). For example, the Coso volcanic field, California, has a silicic eruption rate almost double that of the basalt eruption rate by volume (Bacon, 1982). Like silicic eruptions at composite volcanoes and calderas, formation of a new silicic vent in a distributed volcanic field can produce tephra fallout, block and ash flows, surges and long-active domes (Avellán et al., 2012;Gómez-Vasconcelos et al., 2020;McCurry & Welhan, 2012;Pardo et al., 2009). For instance, during the last 30 ka the Nejapa volcanic field, Nicaragua, experienced recurring plinian and phreatoplinian eruptions of silicic magmas and eruptions of new basaltic monogenetic vents (Avellán et al., 2012). The dynamics of magma intrusion and the eruption of new silicic vents are both influenced by tectonic setting and local structures. These events cause surface deformation that extends hundreds to thousands of meters beyond the vent area (Castro et al., 2016;Jay et al., 2014;Mastin & Pollard, 1988). By studying the silicic intrusions that feed these eruptions, we can better understand precursors to new eruptions in bimodal volcanic fields and better anticipate their potential impacts.

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