Transform margins
workshop 2

With emphasis on their difference from rifted
margins 14-16 December, 2020

Meeting data and
organizing body:

Transform margins workshop 2, 14-16 December, 2020, Teleconference, Energy and Geoscience Institute

Aims of the
workshop:

The workshop combines the results obtained by interdisciplinary groups from academia and oil industry in Europe, Asia and North America. Structural, petrologic, volcanologic, geochemical, geophysical, sedimentological, oceanographic, biostratigraphic, paleogeographic reconstruction and thermochronological methods processing gravity, seismic, magnetic, geodetic, paleomagnetic, well, outcrop, piston core, thermal and dredging data combined with gravity/magnetic forward modeling, subsidence modeling, thermal maturity and heat flow history modeling and thermo-mechanical finite-element and finite-difference modeling are used to determine the tectonic, thermal, sedimentological and hydrocarbon models of different types of transform margins, including their relationship to neighbor magma-poor rifted margin segments, magma-rich margin segments, marginal plateaus and pull-apart margin segments. Special emphasis is given to the difference between thermal and subsidence histories of transform margin and rifted margins. Natural examples used in the studies include Zenith-Wallaby-Perth transform, West Australia, Coromandal transform, East India, Romanche and St Paul transforms, Equatorial Africa, transform faults of the Western Myanmar, transform faults of the Caribbean plate, Agulhas-Falkland transform, Argentina and South Africa, De Geer transform, North Atlantic, Davie transform, Tanzania and Madagascar, Northern Demerara transform, Suriname.

The introduction discussing the mechanisms involved in tectonic and thermal evolution of transform margins and their controlling factors known so far will be followed by 19 papers subdivided into two sections. The smaller one will be devoted to rifted margin segments, with a focus on their thermal history and subsidence. The longer one will be devoted to transform margin segments with focus on their thermal history, subsidence, on top of their tectonic development, depositional history and evolution of hydrocarbon systems.

Attendees:

max 20 invited speakers, max 80 oil industry people in the audience; i.e., 1-3 per oil company (unless given permission to increase once other companies send less) (invited from oil companies with a condition that respective representatives are people with at least several years of experience with exploration at transform margins).

Registration fee:

250 USD

Organizing Committee:

Michal Nemčok (EGI)

Marína Molčan-Matejová (EGI)

Helen Doran (Ola Geology)

Klaus Fischer (Wintershall Dea)

Fausto Mosca (Murphy)

Tony Doré (EGI)

Samuel Rybár (EGI)

Jean-Claude Ringenbach (Total)

Douglas Paton (Leeds University)

James Parr (Anadarko)

Advising Committee:

Jonathan Craig (ENI)

Dorie McGuiness (Kosmos)

Harald Karg (Wintershall Dea)

Mason Dykstra (Anadarko) 

Angus McCoss (Tullow)

Jonathan Peachey (Shell)

Ray Levey (EGI)

Neeraj Sinha (Reliance)

Jean Mascle (CRNS)

Lies Loncke (University Perpignan)

Monday, 14th
December, 2020

Agenda

1:00-1:10 p.m. Nemčok, M. Note about organization
Rifted Margin Session


1:10-1:30 p.m. Nemčok, M., et al. (talk given by Rybár, S.) Breakup of the last layer during lithospheric separation in magma-poor and magma-rich settings


1:30-1:50 p.m. Discussion

1:50-2:10 p.m. Manatschal, G. Thermal regime and subsidence evolution at rifted margins: achievements and future challenges


2:10-2:30 p.m. Discussion


2:30-2:50 p.m. Pérez-Gussinyé, M., et al. Constraining heat flow, subsidence/uplift and sedimentation histories of rifted margins


2:50-3:10 p.m. Discussion


3:10-3:30 p.m. Coffee break


3:30-3:50 p.m. Brune, S. et al. Numerical modeling of continental microplate dynamics:
São Paulo Plateau (South Atlantic) and Victoria (East Africa)


3:50-4:10 p.m. Discussion
Transform Margin Session


4:10-4:30 p.m. Nemčok, M., et al. Transform margins; structural architecture, thermal regimes and petroleum systems


4:30-4:50 p.m. Discussion


4:50-5:10 p.m. Morley, C. K. The role of multiple transform faults in the Cretaceous-Cenozoic development of Western Myanmar


5:10-5:30 p.m. Discussion


5:30-6:30 p.m. break


6:30-7:30 p.m. Plenary brainstorming about learning on Monday

1:00-1:10 p.m.Nemčok, M.
Note about organization
 
Rifted Margin Session
 
1:10-1:30 p.m.Nemčok, M., et al. (talk given by Rybár, S.)
Breakup of the last layer during lithospheric separation in magma-poor and magma-rich settings
1:30-1:50 p.m. Discussion
1:50-2:10 p.m.Manatschal, G.
Thermal regime and subsidence evolution at rifted margins: achievements and future challenges
2:10-2:30 p.m. Discussion
2:30-2:50 p.m.Pérez-Gussinyé, M., et al.
Constraining heat flow, subsidence/uplift and sedimentation histories of rifted margins
2:50-3:10 p.m. Discussion
3:10-3:30 p.m. Coffee break
3:30-3:50 p.m.Brune, S. et al.
Numerical modeling of continental microplate dynamics: São Paulo Plateau (South Atlantic) and Victoria (East Africa)
3:50-4:10 p.m. Discussion
 
Transform Margin Session
 
4:10-4:30 p.m.Nemčok, M., et al.
Transform margins; structural architecture, thermal regimes and petroleum systems
4:30-4:50 p.m. Discussion
4:50-5:10 p.m.Morley, C. K.
The role of multiple transform faults in the Cretaceous-Cenozoic development of Western Myanmar
5:10-5:30 p.m. Discussion
5:30-6:30 p.m. break
6:30-7:30 p.m.
Plenary brainstorming about learning on Monday
 

Tuesday, 15th
December, 2020

Transform Margin Session


1:00-1:20 p.m. Mann, P. and Lei, S. Earthquake and structural expression of strain partitioning along Caribbean plate margins


1:20-1:40 p.m. Discussion


1:40-2:00 p.m. Gerya, T. et al. Rift-to-ridge transition: concepts and models


2:00-2:20 p.m. Discussion


2:20-2:40 p.m. Nemčok, M. et al. (talk given by Sinha, S.) Early post-breakup kinematic adjustments of transform fault zones


2:40-3:00 p.m. Discussion


3:00-3:20 p.m. Coffee break


3:20-3:40 p.m. Doré, A. G. and Lundin, E. The relationship between pull-apart basins and magmatism during continental break-up


3:40-4:00 p.m. Discussion


4:00-4:20 p.m. Basile, C. et al. Initiation of transform continental margins: strain partitioning, lithosphere weakening, and the relationships between marginal plateaus, mantle plumes and transform margins


4:20-4:40 p.m. Discussion


4:40-5:00 p.m. McAfee, A. et al. Tectonic controls on sedimentation patterns along the West African Transform Margin


5:00-5:20 p.m. Discussion


5:20-5:40 p.m. Graindorge, D. et al. Deep structure of the Demerara Plateau and its two-fold tectonic evolution: from a volcanic margin to a Transform Marginal Plateau, insights from the conjugate Guinea plateau


5:40-6:00 p.m. Discussion


6:00-7:00 p.m. break


7:00-8:00 p.m. Plenary brainstorming about learning on Tuesday

 
Transform Margin Session
 
1:00-1:20 p.m.Mann, P. and Lei, S.
Earthquake and structural expression of strain partitioning along Caribbean plate margins
1:20-1:40 p.m. Discussion
1:40-2:00 p.m.Gerya, T. et al.
Rift-to-ridge transition: concepts and models
2:00-2:20 p.m. Discussion
2:20-2:40 p.m.Nemčok, M. et al. (talk given by Sinha, S.)
Early post-breakup kinematic adjustments of transform fault zones
2:40-3:00 p.m. Discussion
3:00-3:20 p.m. Coffee break
3:20-3:40 p.m.Doré, A. G. and Lundin, E.
The relationship between pull-apart basins and magmatism during continental break-up
3:40-4:00 p.m. Discussion
4:00-4:20 p.m.Basile, C. et al.
Initiation of transform continental margins: strain partitioning, lithosphere weakening, and the relationships between marginal plateaus, mantle plumes and transform margins
4:20-4:40 p.m. Discussion
4:40-5:00 p.m.McAfee, A. et al.
Tectonic controls on sedimentation patterns along the West African Transform Margin
5:00-5:20 p.m. Discussion
5:20-5:40 p.m.Graindorge, D. et al.
Deep structure of the Demerara Plateau and its two-fold tectonic evolution: from a volcanic margin to a Transform Marginal Plateau, insights from the conjugate Guinea plateau
5:40-6:00 p.m. Discussion
6:00-7:00 p.m. break
7:00-8:00 p.m.
Plenary brainstorming about learning on Tuesday
 

Wednesday, 16th
December, 2020

Transform Margin Session


1:00-1:20 p.m. Loncke, L. et al. Polyphased sedimentary basins and the importance of contourites along transform marginal plateaus – Examples from the Demerara case study


1:20-1:40 p.m. Discussion


1:40-2:00 p.m. Tari, G. Analogy between the transform margins of Madagascar and West Africa: implications for deepwater exploration


2:00-2:20 p.m. Discussion


2:20-2:40 p.m. Ringenbach, J.-C. et al. (talk given by Roche, V.). Somali Basin’s crustal structure and post-rift deformation along the Davie FZ: a recorder of Madagascar and India drifts


2:40-3:00 p.m. Discussion


3:00-3:20 p.m. Coffee break


3:20-3:40 p.m. Grant, C. Future Transform Margin Exploration – Giving it a Seal of Approval


3:40-4:00 p.m. Discussion


4:00-4:20 p.m. Manatschal, G. et al. Revisiting the Mesozoic Atlantic–Tethyian plate kinematic framework in Western Europe: how important is transtension?


4:20-4:40 p.m. Discussion


4:40-5:00 p.m. Sapin, F. et al. The Agulhas Transform Margin: A long lived structural history on the road to South Atlantic connection


5:00-5:20 p.m. Discussion


5:20-6:20 p.m. break


6:20-7:20 p.m. Plenary brainstorming about learning on Wednesday

 
Transform Margin Session
 
1:00-1:20 p.m.Loncke, L. et al.
Polyphased sedimentary basins and the importance of contourites along transform marginal plateaus – Examples from the Demerara case study
1:20-1:40 p.m. Discussion
1:40-2:00 p.m.Tari, G.
Analogy between the transform margins of Madagascar and West Africa: implications for deepwater exploration
2:00-2:20 p.m. Discussion
2:20-2:40 p.m.Ringenbach, J.-C. et al. (talk given by Roche, V.).
Somali Basin’s crustal structure and post-rift deformation along the Davie FZ: a recorder of Madagascar and India drifts
2:40-3:00 p.m. Discussion
3:00-3:20 p.m. Coffee break
3:20-3:40 p.m.Grant, C.
Future Transform Margin Exploration – Giving it a Seal of Approval
3:40-4:00 p.m. Discussion
4:00-4:20 p.m.Manatschal, G. et al.
Revisiting the Mesozoic Atlantic–Tethyian plate kinematic framework in Western Europe: how important is transtension?
4:20-4:40 p.m. Discussion
4:40-5:00 p.m.Sapin, F. et al.
The Agulhas Transform Margin: A long lived structural history on the road to South Atlantic connection
5:00-5:20 p.m. Discussion
5:20-6:20 p.m. break
6:20-7:20 p.m.
Plenary brainstorming about learning on Wednesday
 
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