Williams, M.L., Cleveland, M., Condit C.D University of Massachusetts-Amherst Building a dynamic image-based database: Integrating thin section images.

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Presentation transcript:

Williams, M.L., Cleveland, M., Condit C.D University of Massachusetts-Amherst Building a dynamic image-based database: Integrating thin section images and data using Dynamic Digital Maps.

CD-ROM Synthesis, 2002

East Lake Athabasca - Anhydrous felsic granulite Grt Kfs + Pl Qtz Sil

East Lake Athabasca - Anhydrous felsic granulite Grt Kfs + Pl Qtz Sil

Grt Qtz Sil Bt Pl Qtz 3 mm Legs Lake shear zone - Hydrated felsic granulites

Grt Crd Bt 0.5 mm Sil Hydrated felsic granulites Retrograde assemblage: Grt +Bt + Crd + Sil + Pl + Qtz GPa, °C

Thermobarometry from Williams et al., 1995

GPa °C P-T pseudosection for hydrated felsic granulite

Pressure [GPa] Felsic granulites - P-MH2O pseudosection (1.5 wt% H 2 O) 0.8 M H2O

Monazite distribution in retrograde felsic granulite Mapping-based approach - Full thin section X-ray maps Grt Bt Monazite Mg K 

Felsic granulites - Monazite dating results

Felsic granulite evolution Xnt: MA

East Athabasca, Canada P-T-t-D paths GPa °C

Upper Granite Gorge, Grand Canyon