Smackover Formation References Smackover Formation geological formation, North America 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: Jurassic Period/ North AmericaThe Smackover Formation of the Gulf Coast sequences is a sedimentary unit typical of the Middle Jurassic. Read MoreThe Smackover Formation of the Gulf Coast sequences is a sedimentary unit typical of the Middle Jurassic. Read More