'''Monogenetic volcanoes''' typically erupt for only brief time intervals -- weeks to perhaps centuries -- and generally display a narrower range (as compared to composite [[volcano]]es) in eruptive behavior. Most monogenetic volcanoes are [[basalt]]ic in composition. (Walder, et.al., 1999) <ref>[http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html Glossary of Volcano and Related Terminology]</ref>
+
'''Monogenetic volcanoes''' typically erupt for only brief time intervals—weeks to perhaps centuries—and generally display a narrower range (as compared to composite [[volcano]]es) in eruptive behavior. Most monogenetic volcanoes are [[basalt]]ic in composition. (Walder, et al., 1999) <ref>[http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html Glossary of Volcano and Related Terminology]</ref>