Geography Factors that Affect the Shape & Pattern of Volcanoes The nature of the vent-Is it linear or central vent? The type or nature of the lava -Is it a mobile or viscous lava? The character of the earth crust through which the lava escapes. Was this helpful?👍 Yes👎 No ← Previous Classification of Volcanoes Next → Distribution of Volcanoes Leave a comment Cancel replyYou must be logged in to post a comment.