InterRidge Working Group Oceanic Transform Faults
FIRST WORKSHOP – Plouzané, Brest – May 22nd-24th 2018
Program
Tuesday, May 22nd, room D at IUEM, Plouzané
9:00 – 9:15 – Welcome coffee
9:15 – 9:30 – Anne Marie Tréguier, director of OSU IUEM
9:30 – 9:50 – Jérôme DYMENT et Nadine LE BRIS – InterRidge Program
9:50 – 10:00 – Marcia MAIA (LGO, IUEM, WG coordinator) – Presentation of the WG and the workshop
10:00 – 13:00– Session 1 Tectonics and structure of transform faults (chair B. Hanan)
10:00 – 10:30 Colin DEVEY (GEOMAR) A 100Ma history of oceanic spreading from the Vema Fracture Zone
10:30 – 11:00 Coffee break and posters (Hall IUEM)
11:00 – 11:30 Marco LIGI (ISMAR CNR) Megatransforms: a New Class of Oceanic Transform Plate Boundaries
11:30 – 12:00 Marcia MAIA (IUEM) Evolution of a multi-segmented slow-slipping transform system: the Equatorial St. Paul transform
12:00 – 12:30 Laurent GEOFFROY (IUEM) Oblique continental extension and the birth of transform faults: the Gulf of California as a case-example
12:30 – 13:30 Lunch break (buffet at IUEM)
13:30 – 14:00 Diane Arkay & Serge Lallemand (CNRS) From transform faults to subduction
14:00 – 14:30 Jason Phipps Morgan, (Royal Holloway) Transform topography revisited
14:30 – 16:00 Session 2 Petrology & geochemistry (chair M. Maia)
14:30 – 15:00 Barry HANAN (SDSU) A New Kind of Hotspot-Ridge Interaction: Evidence from the Southeast Indian Ridge
15:00 – 15:30 Daniele Brunelli (University of Modena) Temporal record of magmatic activity and source melting along fracture zones
15:30 – 16:00 Henry Dick, (WHOI) The Crust-Mantle Boundary on the Atlantis II Transform Wall, SWIR
16:00 – 16:30 coffee break and posters (Hall IUEM)
16:30 – 19:00 Session 3 Deep structure and numerical models of transform faults (chair D. Brunelli)
16:30 – 17:00 Emily Roland (University of Washington) Fault zone structure at the Gofar oceanic transform: physical properties constrained by seismic velocity and numerical models
17:00 – 17:30 Louis Geli (IFREMER) Understanding the relations between seismicity and fluid compressibility in submarine environments: learnings from two case studies, e.g. the Main Marmara Fault and the East Pacific transform faults
17:30 – 18:00 Taras Gerya (ETHZ) Nucleation and evolution of oceanic ridge-transform spreading patterns
19:15 departure for Brest, free evening
Wednesday, May 23rd, room D, B-220 and A-219 at IUEM, Plouzané
9:00 – 9:15 – coffee
9:15 – 10:15 Session 3 Deep, continue, structure and numerical models of transform faults (chair D. Brunelli)
9:15 – 9:45 Fan Zhang (Southern University of Science and Technology) Structure of fracture zones as resulting from geophysical constraints
9:45 – 10:15 Lars RUEPKE (GEOMAR), Temperature, deformation, and fluid flow at oceanic transform faults in 3-D geodynamic models
10:15 – 10:45 coffee break and posters (Hall IUEM)
10:45 – 12:30 round tables
12:30 – 13:30 lunch
13:30 – 16:00 round tables by group of interest
16:00 – 16:30 coffee break and poster (Hall IUEM)
16:30 – 19:00 first joint discussion after the round tables
19:15 Departure to pointe St. Mathieu for the WS dinner
22:30 return to Brest
Thursday May 24th, room D at IUEM, Plouzané
9:00 – 9:15 – coffee
9:15 – 10:30 continue general discussion and wrap up of the main conclusions and recommendations
10:30 – 11:00 coffee break
11:00 – 12:30 Wrap up
12:30 – 13:30 Lunch
14:30 End of WS and departure to Brest