Granier is Professor of Geology at the University of Brest (France) (also locally referred to as the Université de Bretagne Occidentale), a post he held in 2004.
[1] He is also editor of the open access electronic journal Carnets de Géologie, associate editor of PALAIOS and the manager of the internet website Geoscience e-Journals.
From 2007 to 2011 he was president of the French Committee of Stratigraphy;[2] accordingly, he organized the 4th French meeting on Stratigraphy, STRATI2010.
His fields of interest are sequence stratigraphy, carbonate sedimentology, diagenesis, stratigraphy, rock-typing and micropaleontology (particularly on the study of fossil calcareous algae).
He teaches undergraduate courses in field geology, sedimentology and micropaleontology.