V010
Chasing the Liquid: Experimental and Microanalytical Techniques for Determining Melt Compositions
Session ID#: 82353
Session Description:
This session focuses on studies aiming to determine silicate melt compositions, and their properties, in magmatic systems where melt is no longer present, or is not representative of its crystalline constituents. Understanding the evolution of silicate melts remains a fundamental problem in igneous geochemistry. However, the final erupted magma rarely records the complexity of melt evolution, necessitating alternative methods of determining silicate melt compositions. Bringing together igneous petrologists, geochemists, and experimentalists, this session invites presentations on studies utilizing melt inclusions and trace element partitioning with the goal of interrogating the crystalline record to determine the hidden composition of globally diverse silicate melts.
Index Terms:
1042 Mineral and crystal chemistry [GEOCHEMISTRY]
1043 Fluid and melt inclusion geochemistry [GEOCHEMISTRY]
1065 Major and trace element geochemistry [GEOCHEMISTRY]
3630 Experimental mineralogy and petrology [MINERALOGY AND PETROLOGY]
Primary Convener: Michael C Rowe, University of Auckland, Auckland, New Zealand
Conveners: Frank J Tepley III, Oregon State University, CEOAS, Corvallis, OR, United States and Gokce K Ustunisik, American Museum of Natural History, New York, NY, United States
Primary Liaison: Michael C Rowe, The University of Auckland, Auckland, New Zealand
A Three-Stage Model for Trace Element and Isotope Fractionation During Solidification in Magmatic Veins (Invited) (486439)
Yan Liang, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, QI-Shuai Huang, ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, BEIJING, China and Véronique Le Roux, Woods Hole Oceanographic Inst, Woods Hole, MA, United States
Asthenospheric Mafic-Ultramafic Melts are Dripping Wet at Emplacement in the Deep Lithosphere. Evidence From the Ediacaran age Seiland Igneous Province, N. Norway (497047)
Rune B Larsen1, Bjorn Eske Sorensen2, Even Nikolaisen2, Alf A. Orvik3 and Eric James Ryan4, (1)Norwegian University of Science and Technology, Department of Geosciences and Petroleum, Trondheim, Norway, (2)Norwegian University of Science and Technology, Trondheim, Norway, (3)Norwegian University of Science and Technology, Geosciences and petroleum, Trondheim, Norway, (4)Norwegian University of Science and Technology, department of geoscience and petroleum, Trondheim, Norway
Experimental Investigation of the Phase Equilibria of Plagioclase Ultraphyric Basalts (PUBs) (503684)
Gokce K Ustunisik, South Dakota School of Mines and Technology, Department of Geology and Geological Engineering, Rapid City, SD, United States, Roger L. Nielsen, South Dakota School of Mines and Technology, Geology and Geological Engineering, Rapid City, SD, United States and David Walker, Columbia University of New York, Department of Earth and Environmental Sciences, Palisades, NY, United States
Re-equilibration of Fe3+/∑Fe ratios in natural olivine-hosted melt inclusions (503689)
Jennifer Humphreys1, Maryjo N Brounce1 and Kristina J Walowski2, (1)University of California Riverside, Earth Sciences, Riverside, CA, United States, (2)Middlebury College, Geology, Middlebury, VT, United States
Experimental Constraints on the Homogenization of Plagioclase Hosted Melt Inclusions from Plagioclase Ultraphyric Basalts (503709)
Kristen Lewis, South Dakota School of Mines and Technology, Rapid City, SD, United States, Gokce K Ustunisik, American Museum of Natural History, New York, NY, United States and Roger L. Nielsen, South Dakota School of Mines and Technology, Geology and Geological Engineering, Rapid City, SD, United States
CO2 and H2O in Plagioclase-Hosted Melt Inclusions from Ocean-Ridge Lavas: An Indicator of Crystallization in the Lower Oceanic Crust (625789)
Alisa Kotash1, Frank J Tepley III2, Roger Nielsen2 and Robert J Bodnar3, (1)Oregon State University, Corvallis, OR, United States, (2)Oregon State University, CEOAS, Corvallis, OR, United States, (3)Virginia Tech, Blacksburg, VA, United States
