31. Felsic rocks have low concentrations of Sm and high Nd and therefore " low"32. The bulk of felsic rock in the Link Lake Formation occurs as subaqueous pyroclastic flow deposits. 33. The whole sequence was deformed, metamorphosed and intruded by felsic magmas during the Hercynian orogeny. 34. Felsic magmas of phreatic ) eruptions.35. It is formed by felsic lava. 36. The volcano itself lies rests above a basement of gneisses, felsic plutons and volcaniclastic sequences. 37. Most felsic UHP rocks have undergone extensive retrograde metamorphism and preserve little or no UHP record. 38. Common felsic minerals include quartz, muscovite, orthoclase, and the sodium-rich plagioclase feldspars. 39. Dacitic magma is formed by the subduction of young oceanic crust under a thick felsic continental plate. 40. On the west flank, erosion has exposed another epithermally altered felsic rock layer with gold mineralization.
