[Dingwell] Towards timescales of assimilation and magma mixing in the Large Igneous Province of Snake River Plain-Yellowstone, northwest United States

German Title: Towards timescales of assimilation and magma mixing in the Large Igneous Province of Snake River Plain-Yellowstone, northwest United States

Abbreviation: 262

Current Status: completed


Main Applicant:Prof. Dr. Donald Bruce Dingwell


Resources Recipient


Other Persons

Dr. Daniele Morgavi
Prof. Dr. Christina Maria Pinheiro de Campos


Conveyor Begin:
Conveyor End:
Conveyor Duration:
Year: 2009


Description

The breath of magma diversities in the Snake River Plain and Yellowstone (SRP-Y) volcanic fields presents a unique opportunity to study the interaction of a hot-spot-related thermal anomaly with the continental crust and the subsequent development of magma reservoirs. As a reservoir forms, primitive magma batches induce crustal melting and assimilation, and mixing. Mixing caused by a recharge of a more primitive magma is expected to be accompanied by heating of the reservoir which may obstruct fractionation and thus to precede it. The SRP-Y holds the tale of this chemical process and therefore provides the pieces of the puzzle portraying the evolution of magmas. A series of tests is proposed to systematically characterize the evolution and importance of mixing during the lifetime of reservoirs fed by a hotspot. This work aims to (1) identify end members in the SRP, and (2) to characterize their physical (e.g., density, viscosity) and chemical (e.g., interstitial melt’s composition, volatile content) properties. In a second phase, this work will (3) assess the interaction between physical and chemical properties of the magmas involved in the SRP-Y systems; and (4) constrain changes in the timescale of assimilation and mingling in the SRP magma reservoirs.

Related Publications

Wiesmaier, S., Morgavi, D., Renggli, C. J., Perugini, D., De Campos, C. P., Hess, K. U., Ertel-Ingrisch, W., Lavallée, Y., Dingwell, D. B. (2015). "Magma mixing enhanced by bubble segregation" Solid Earth 6 p1007-1023


Morgavi, Daniele, Perugini, Diego, De Campos, Cristina P., Ertl-Ingrisch, Werner, Lavallée, Yan, Morgan, Lisa, Dingwell, Donald B. (2013). "Interactions between rhyolitic and basaltic melts unraveled by chaotic mixing experiments" Chemical Geology 346 p199-212


Morgavi, Daniele, Perugini, Diego, De Campos, Cristina P., Ertel-Ingrisch, Werner, Dingwell, Donald B. (2013). "Morphochemistry of patterns produced by mixing of rhyolitic and basaltic melts" Journal of Volcanology and Geothermal Research 253 p87-96


Perugini, D., De Campos, C. P., Dingwell, D. B., Dorfman, A. (2013). "Relaxation of concentration variance: A new tool to measure chemical element mobility during mixing of magmas" Chemical Geology 335 p8-23


Morgavi, Daniele, Perugini, Diego, De Campos, Cristina P., Ertel-Ingrisch, Werner, Dingwell, Donald B. (2013). "Time evolution of chemical exchanges during mixing of rhyolitic and basaltic melts" Contributions to Mineralogy and Petrology 166 p615-638


De Campos, Cristina P., Perugini, Diego, Ertel-Ingrisch, Werner, Dingwell, Donald B., Poli, Giampiero (2011). "Enhancement of magma mixing efficiency by chaotic dynamics: an experimental study" Contributions to Mineralogy and Petrology 161 p863-881