SC01

Physical processes in magmatic sulfide ores and architecture of their host intrusions - SC01

Venue: To be determined

Duration : 2 days (August 18 and August 19; pre-conference short course)

Presenters:  Stephen J. Barnes (CSIRO, Australia), James Mungall (University of Toronto)

Contact person: jim.mungall@gmail.com

Number of participants: minimum 15 / maximum 40 participants

Registration deadline: May 15, 2017

Cost:
•    Student: $ 150.00 CAD
•    SGA & EAG member/non-member: $ 350.00 CAD / $ 425.00 CAD
* The reduced rate for students is available to a limited number of persons. Additional requests will be put on a waiting list.

 Description: The geochemistry of magmatic sulfide ores has been investigated extensively over many years, but the physical mechanisms of ore formation have been relatively neglected until recently. In this workshop we aim to present an account of the current state of the art on understanding physical processes in the formation of magmatic Ni-Cu-PGE deposits, with particular reference to the magmatic bodies that host them. The course aims to cross the boundary between academic research and practical applications. The course will draw on case studies of some of the world’s major deposits including Noril’sk-Talnakh, Voisey’s Bay, Sudbury, Kambalda, Jinchuan and the Mid-Continent Rift. A detailed reading list will be supplied, and PDFs of course materials will be made available to participants. There will also be participation exercises (bring a laptop) and sample viewing.

Content:

  • Introduction – the Mineral System Approach, time and length scales in ore forming processes.
  • Intrusion-hosted Ni-Cu-PGE systems – overview, intrusion geometries, chonoliths, emplacement mechanisms.
  • Komatiite hosted systems – geology, ore genesis, what do they tell us about ore forming processes more generally?
  • Textures of magmatic sulfide ores and implications for genetic processes: disseminated and net-textured (matrix) ores, sulfide-matrix breccia ores; accumulation, differentiation, migration of sulfide liquids, tectonic vs magmatic breccias, new insights from analogue and computational fluid dynamic models.
  • Synthesis: towards a multi-scale model for the genesis of magmatic Ni-Cu-PGE sulfide deposits in crustal scale dynamic magma pathways. Length and time scales revisited.
  • Exploration implications. Some myths and mysteries. Target selection criteria. Distal footprints of magmatic sulfide systems.