Abstract: An attempt is made to develop an in situ crystallization model based on the concept of Soret fractionation to explain the origin of commonly observed S-, D-, and I-shaped compositional ...

(J) Potassium feldspar phenocryst surrounded by subgrains of quartz and potassium feldspar. (K) Coarse-grained plagioclase with bent twinning associated with biotite II- and hematite-rich zones. BIFs ...

1 Department of Earth Science and Environmental Change, University of Illinois Urbana Champaign, Urbana, IL, United States 2 Department of Earth Sciences, Southern Methodist University, Dallas, TX, ...