The mapped area was covered using the method established for a forest area served by a network of secondary roads. The geological mapping work was carried out by working teams consisting of a geologist and a geological assistant. Access to most of the territory is made possible by a network of logging roads and lakes accessible by truck, motorquad or boat. Areas without logging roads have been subjected to walking transects approximately 4 km long and spaced 1 to 2 km apart, as well as spot stops by helicopter.
Outcrops are described using electronic tablets to capture field data in the “Geofiches” module (see MB 98-05 and DV 2013-07 documents). Data is then integrated into the SIGÉOM database. To better characterize geological units, representative samples are analyzed using the following techniques:
The stratigraphic nomenclature of the mapped area meets the standards of the North American Stratigraphic Code (DV 86-02, MNR, 1986; North American Commission on Stratigraphic Nomenclature, 2005; Easton, 2009) and the already-established nomenclature. Units were defined in terms of rock composition, age, cross-cutting relationships, structures and textures, and regional distribution.