- 2017-2022: Chair, Local Organizing Committee,
Halifax 2022 GAC-MAC Meeting.
- 2013-19: President-Elect, President, and
Past-President, Canadian Federation of Earth Sciences.
- 1986-present: Editor, Atlantic Geology
(Journal of the Atlantic Geoscience Society)
- Field trip leader, Canadian Paleontological
conference Field Trip - Cape Breton Highlands, NS, August 24-25,
- Field trip co-leader, Canadian Tectonics
Group Workshop, Cape Breton Island, Sydney, NS, October 2-4, 2015.
- Field trip co-leader, "The on-going Saint John geology enigma: Avalonia versus
Ganderia in southern New Brunswick". GAC-MAC Fredericton 2014 field
trip, May 24-25, 2014
- Field trip co-leader, "The new Meguma: stratigraphy, metamorphism, paleontology, and
provenance". GAC St. John’s 2012 field trip (May 28-June
- Field trip co-leader, "Ganderia
in New Brunswick" field trip (May 28-June 1, 2011)
- Field trip co-leader, "Eurogranites"
field trip in Nova Scotia (Aug. 29-Sept.4, 2010
- Presidential Advisor,
Geological Association of Canada (2008-2018)
- Book Editor, Geological
Association of Canada (2005-2020)
- Associate Editor,
Geological Society of American Bulletin (2007-2020)
Geological Survey of Canada Advisory Committee (2006-2008)
Geological Association of Canada (2004-2005)
- Member, Local Organizing Committee, Geological
Association of Canada/Mineralogical Association of Canada 2005 meeting
in Halifax, NS., and Chair of the Field Trip Committee)
- Co-chair of the program committee for the
joint Northeastern Section of the Geological Society of America and Atlantic
Geoscience Society meeting, Halifax, NS, March 2003.
- Canadian Leader, IGCP Project 426, Granite
Systems and Proterozoic Lithospheric Processes.
- Member, Canadian delegation to the 30th International
Geological Congress, Beijing, China (1996).
- Member, Canadian National Committee, International
Union of Geological Sciences (1994-2000).
- Member, NSERC Grant Selection Committee 08,
Solid Earth Sciences (1994-1997).
- President of AGID Canada (Canadian chapter
of the Association of Geoscientists for International Development) (1995-present).
- Treasurer & Councillor, Association of
Geoscientists for International Development (1993-1996)