Keywords: Spaced cleavage.jpg en A thin section depicting spaced cleavage The cleavage domains are darker biotite grains and the microlithons between consist of mostly muscovite and quartz The grains in the microlithons are starting to align in a preferred orientation A new foliation overprinted an old showing the beginning signs of a crenulation cleavage own Geoloshe 2011-05-03 Oriented thin section collected in the Northern Idaho national forest 47° 3' 43 N; 115° 00' 58 W Cc-zero Uncategorized 2015 April 2 |