Wendlandt, Richard F.Simon, Justin Ibrahim2022-09-272022-09-272000https://hdl.handle.net/11124/15279Includes bibliographical references (pages 195-203).masters thesesengCopyright of the original work is retained by the author.Volcanic ash, tuff, etc. -- San Juan Mountains Region (Colo. and N.M.)Volcanic ash, tuff, etc. -- ColoradoVolcanic fields -- San Juan Mountains Region (Colo. and N.M.)Volcanic fields -- ColoradoPetrogenesis -- San Juan Mountains Region (Colo. and N.M.)Petrogenesis -- ColoradoPetrogenic comparison of early crystal-poor ash-flow tuffs, San Juan volcanic field, south-central Colorado, AText