columnar jointing References columnar jointing geology Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: igneous rock/ FracturesThe columnar jointing found in many mafic volcanic rocks is a typical result of contraction upon cooling. Read MoreThe columnar jointing found in many mafic volcanic rocks is a typical result of contraction upon cooling. Read More