Geological Association of Canada-Mineralogical Association of Canada (GAC-MAC) Annual Meeting - Margins Through Time

Start Date: 
Wednesday, June 1, 2016
End Date: 
Friday, June 3, 2016

Location: Whitehorse, Yukon, Canada


Includes the following session:

Northwest Laurentia's neighbor in Proterozoic supercontinents: cratonic identifications and their geodynamic implications

Convenors: Bruce Eglington (, David Evans (, Zheng-Xiang Li (

Recent paleogeographic models for both Nuna (ca. 1600-1300 Ma) and Rodinia (ca. 900-700 Ma) invoke ancient tectonic connections between NW Laurentia and eastern Australia, possibly with various cratons of eastern Asia (South China, North China, Tarim, Siberia) in between or nearby.  The tectonostratigraphic and paleomagnetic records of all of these continental blocks must be scrutinized to test whether any of the proposed models has validity, for either time interval. If they are even approximately correct, then a general geodynamic pattern of supercontinental “introversion” is suggested.  As part of International Geoscience Programme (IGCP) Project 648, “Supercontinent Cycles and Global Geodynamics,” this session aims to bring both geologists and geophysicists together to discuss recent advances in Proterozoic supercontinent research, at both regional and global scales.

Whitehorse, Yukon, Canada