The first PACIFIC workshop was held at Lakehead University in Thunder Bay (Ontario, Canada) on 12-13 June 2019, followed by a one-day excursion to the Marathon exploration site on 14 June. The general theme was the ambient noise (or passive) seismic method, as applied to exploration for PGE-Cu ore deposits at Marathon in the Caldwell Complex. About 30 people attended the presentations which were held in a conference room generously provided by the Geology Department of Lakehead University, and a majority of these participated in the excursion. In attendance were 8 participants in the PACIFIC H2020 project and 18 experts in fields related to PACIFIC activities.

Inspection of cores - Marathon workshop
Rosemary Fayjaloun (UGA) displaying a node

The workshop opened on the first day with general talks about the global mineral exploration scene, the nature of ore deposits and the basic principles of the passive seismic method. The session finished with a presentation describing the methods being used to enquire into the public’s perception of the minerals industry.

Dan Hollis (SISP) explaining seismic imaging at Marathon

The second day was devoted to more specialized talks in which the geological context and mineralisation at Marathon were described, followed by a presentation on the passive seismic survey itself. Then the results issuing from preliminary analysis of the results were discussed in detail.

The field excursion took place on the morning of June 14. Participants were shown a series of outcrops that illustrated the main rock types, the nature of the contact between the Caldwell intrusion and wall rocks, and the characteristics of the PGE-Cu mineralization.

John McBride (Stillwater) talking about mineralization at Marathon
David Good and Nick Arndt looking at mineralized gabbro at Marathon
A sample of mineralized gabbro at Marathon deposit

In all respects the workshop was very successful. There was a favourable mix of members of the PACIFIC consortium from both academia and industry, faculty and students from several Canadian universities, and geoscientists from Canadian mineral exploration companies. The preliminary results were exciting and clearly demonstrated the potential of the method to delineate the geological context of mineralization at Marathon and to pin-point the structures that control the location of zones of mineralization.

 

Marathon workshop - Group Photo

The workshop attracted the attention of local media. Two interviews, one in English, the other in French, were conducted for local radio, and another interview led to a report on local TV. Check out the following links!

 

Thunder Bay Local News: check at 1:15 to see John McBride and Nicholas Arndt speak about the PACIFIC project.

Radio Canada (in French): listen to the “Séance d’information sur une nouvelle technique d’exploration minière” to hear Rosemary Fayjaloun talk about passive seismic.

The organisers acknowledge and thank the following, without whose help the workshop would not have been possible: John Mcbride from Stillwater, Peter Hollings and Heleena Stephans from Lakehead University, and Alan King, Mike Lesher and David Good.

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