Refraction Line Over GXT2000

OERA funded a seismic survey to obtain a refraction line off the eastern coast of Cape Breton. This survey took place as part of the Play Fairway Analysis and Data Package Program, an 18-month program with funding totaling $15 million, to re-examine the geology of offshore Nova Scotia. The overall goal of the Play Fairway Program is to make detailed geological information available for oil and gas exploration companies to attract interest in developing Nova Scotia’s offshore petroleum resources.

Refraction Line GXT2000This 400km line, running 115° from the Scotian Shelf down the Scotian Slope to deeper water, reaches water depths from 32m to 4807m below sea level. The survey took approximately 15 days to complete. The work location extends from the eastern tip of Cape Breton and is 290 nautical miles offshore.

The location of this refraction line was chosen to parallel the proposed African/North American rifting margin. The survey allowed for the integration of new refraction data and reprocessing of magnetic data. Combined with reprocessed refraction data from Morocco, this new data has helped in developing an updated plate reconstruction for the margin with better age constraints for break up age and early spreading history.

The results of this refraction line have fed directly into the Plate Tectonics component of the Play Fairway Analysis Program. The processing of this refraction data will allow the geoscience community to better understand the formation history of the basin, and to make more accurate assumptions concerning source rock distribution and to a lesser extent the reservoir distribution.