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Earth Sciences Seminar

The Role of Geosciences in Extended Continental Shelf Mapping: Atlantic Canada presented by David C. Mosher
Geological Survey of Canada, Natural Resources Canada
Commission on the Limits of the Continental Shelf


According to article 76 of the UN Convention on the Law of the Sea, a coastal State is entitled to an extended continental shelf (beyond 200 
nautical miles), given certain geomorphological and geological conditions.  The continental margin of Atlantic Canada is vast and highly variable.  This talk explores the complex morphologies of 
Canada’s Atlantic continental margin and explains how these morphologies are used to meet the criteria described in article 76 of the Convention 
to establish an extended continental shelf in this region.  In the process, the presentation explores the conventional view of a passive continental margin consisting of a shelf, slope and rise and provides alternate methods borrowed from the petroleum exploration industry of describing a continental margin.



Milligan Room, 8th Floor Biology-Earth Sciences Wing, Life Sciences Centre, Dalhousie University

Additional Information


Dr. David Mosher is currently a Commissioner on the Commission for the Limits of the Continental Shelf at the UN in New York. David graduated 
from Dalhousie University Department of Oceanography with his PhD in 1993, following a MSc at Memorial University and a BSc at Acadia 
University. He worked for the Geological Survey of Canada for 22 years as a marine geoscientist, first out of the Pacific Geoscience Centre in Sydney, BC, then at the GSC-Atlantic at Bedford Institute of Oceanography.  He started work on Canada’s Extended Continental Shelf Program in 2008 and led four expeditions to the Arctic Ocean as well as co-led preparation of Canada’s submission for Atlantic Canada and the Arctic.  In 2015, he joined the University of New Hampshire, Dept of 
Earth Sciences and the Center for Coastal and Ocean Mapping and assisted on the U.S. Extended Continental Shelf program.  In 2017, he took a 
leave of absence from UNH to undertake the Commission work.