Poster Number 75
See more from this Division: General Discipline Sessions
See more from this Session: Mineralogy/Crystallography; Petrology, Experimental; Igneous; Metamorphic (Posters)
Abstract:
Fresh samples of layered amphibolites (amphibole + epidote + quartz + plagioclase + titanite) have been collected from two localities in the vicinity of Carrollton, GA. These rocks have been mapped as part of the Ashland Group, a sequence of metamorphosed basalts and volcaniclastics. Most samples contain very thin (less than one centimeter thick) layers of alternating amphibole-rich, epidote-rich, or quartz-rich bands. Mineral compositions as determined by SEM-EDS and EPMA analyses will be applied to a suite of mineral thermometers and barometers, including Al-in-hornblende, Ti-in-hornblende, and hornblende-plagioclase exchange, to produce the first quantitative assessment of metamorphic conditions in this region of the Southern Appalachians. Preliminary data indicate that the amphibolites equilibrated at temperatures of approximately 600 deg-C.
See more from this Division: General Discipline Sessions
See more from this Session: Mineralogy/Crystallography; Petrology, Experimental; Igneous; Metamorphic (Posters)