V41D:
Where Arc Magmas Reside: Comparing the Volcanic and Plutonic Records I
V41D:
Where Arc Magmas Reside: Comparing the Volcanic and Plutonic Records I
Where Arc Magmas Reside: Comparing the Volcanic and Plutonic Records I
Session ID#: 9834
Session Description:
Magmatic processes are powerful agents for creating and reworking the Earth’s crust. Passage and stalling of magmas in arcs brings new material into the crust and drives interactions with wall rock, magma mixing and fractionation, leaving complex crystal histories in both volcanic and plutonic rocks. In intrusive terrains, field relationships, aureole or igneous thermobarometry, and physical modeling inform where magmas reside and get modified. Erupted magmas carry quenched time series of mineralogical and compositional imprints of their crustal traverse. We invite contributions that use continental arc igneous assemblages to understand magma accumulation and residence in the crust, investigate magma-crust interactions and crustal assimilation, and the processes of magma mobility and eruptibility. We welcome discussions on the nature of plutonic versus volcanic rocks (cumulates/fractionates versus compositional equivalents) and volcanic-plutonic volume ratios. Contributions are welcome from petrology, geochemistry, geophysics, modelling and related fields.
Primary Convener: Valbone Memeti, California State University Fullerton, Fullerton, CA, United States
Conveners: Gary Michelfelder1, Anita Grunder2 and Emily E. Salings1, (1)Missouri State University, Springfield, MO, United States(2)Oregon State University, CEOAS, Corvallis, OR, United States
Chairs: Valbone Memeti1, Gary Michelfelder2, Emily E. Salings2 and Anita Grunder3, (1)California State University Fullerton, Fullerton, CA, United States(2)Missouri State University, Springfield, MO, United States(3)Oregon State Univ, CEOAS, Corvallis, OR, United States
OSPA Liaison: Valbone Memeti, California State University Fullerton, Fullerton, CA, United States
Cross-Listed:
- S - Seismology
- T - Tectonophysics
Co-Sponsor(s):
- GS: Geochemical Society - Geochemical Society
- MSA: Mineralogical Society of America - Mineralogical Society of America
Index Terms:
1037 Magma genesis and partial melting [GEOCHEMISTRY]
3618 Magma chamber processes [MINERALOGY AND PETROLOGY]
3640 Igneous petrology [MINERALOGY AND PETROLOGY]
8170 Subduction zone processes [TECTONOPHYSICS]
Abstracts Submitted to this Session:
Zoning in hornblende as a key to petrologic evolution of sub-volcanic granitic plutons (Invited) (59329)
See more of: Volcanology, Geochemistry and Petrology