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, Ascension and Kribi transforms, Gabon and Equatorial Guinea, Davie transform, Tanzania and Madagascar, Maldonado triple junction, Uruguay, Northern Demerara transform, Suriname and French Guyana transform. 

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.

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 Euro

Organizing Committee:

Michal Nemčok (EGI)

Marína Molčan-Matejová (EGI)

Helen Doran (Ola Geology)

Klaus Fischer (Wintershall)

Fausto Mosca (Murphy)

Tony Doré (Equinor)

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)

Mason Dykstra (Anadarko) 

Angus McCoss (Tullow)

Jonathan Peachey (Shell)

Ray Levey (EGI)

Neeraj Sinha (Reliance)

Jean Mascle (CRNS)

Lies Loncke (University Perpignan)

Content and contributors:

1  Workshop introduction: Tectonic and thermal evolution of transform margins 

Michal Nemčok, Helen Doran, Anthony G. Doré, Lucia Ledvényiová and Samuel Rybár

(A) Rifted margin segments

2  Breakup of the last layer during lithospheric separation in magma-poor and magma-rich settings 

Michal Nemčok1, Pospíšil, L.2, Melnik, A.2, Henk, A.3, Doré, A. G.4, Rybár, S.1, Sinha, S. T.5, Choudhuri, M.5, Sharma, S.5, Stuart, C. J.1, Welker, C.1, Sinha, N.5, Nuttall, P.6 and Venkatraman, S.6 

1 Energy and Geoscience Inst. at University of Utah, Senická 23, 811 04 Bratislava, Slovakia,

2 Institute of Engineering Geology, Technical University Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic, 

3 Inst. Ang. Geowiss, Technische Universität Darmstadt, Schnittspahnstrasse 9, D-64287 Darmstadt, Germany, 

4 Statoil U.K. Ltd., One Kingdom Street, London, W2 6BD, UK

5 Reliance Industries Ltd., Reliance Corporate Park, Block 5, A Wing, Navi Mumbai-400701, India

6 ION Geophysical 2105 CityWest Boulevard, Suite 900, Houston, TX 77042-3847, USA

3  Thermal regime and subsidence evolution at rifted margins: achievements and future challenges 

Gianreto Manatschal1 

1 IPG-EOST, Université de Strasbourg/CNRS, 1 rue Blessig, F-67084 Strasbourg, France

4  Constraining heat flow, subsidence/uplift and sedimentation histories of rifted margins 

Marta Pérez-Gussinyé1, Araujo, M.1,3, Xin Y.1,2, Andrés-Martínez, M.1

1 Marum, Universität Bremen, 2 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 3 Cenpes, Petrobras, Brazil

5  Numerical modeling of continental microplate dynamics: São Paulo Plateau (South Atlantic) and Victoria (East Africa)

Sascha Brune1,2, Anne Glerum1, Derek Neuharth1, Christian Heine3

1 GFZ German Research Centre for Geosciences, Potsdam, Germany.

2 Institute of Geosciences, University of Potsdam, Potsdam-Golm, Germany.

3 Specialist Geosciences, PTD/E/F, Shell Global Solutions International B.V., Rijswijk, NL 

(B) Transform margin segments

6  The role of multiple transform faults in the Cretaceous-Cenozoic development of Western Myanmar 

Chris Morley1 

1 PTT Exploration and Production, Vibhavadi Rangsit Road, Bangkok, Thailand

7  Earthquake and structural expression of strain partitioning along Caribbean plate margins 

Paul Mann1

1 Department of Earth and Atmospheric Sciences, University of Houston, 3507 Cullen Blvd, Houston, Texas 77204-5008, USA

8  Rift-to-ridge transition: concepts and models

Taras Gerya1, Jana Schierjott1 and Dave Bercovici2

1  Department of Earth Sciences, ETH-Zurich, Switzerland, Sonneggstrasse 5, 8092 Zurich 

2  Department of Geology & Geophysics, Yale University, USA

9  Early post-breakup kinematic adjustments of transform fault zones

Michal Nemčok1, Lucia Ledvényiová1, Andreas Henk2, Samuel Rybár1, Sudipta T. Sinha3, Lubomil Pospíšil4, Ján Mikuška5

1 Energy and Geoscience Institute at University of Utah, Senická 23, 811 04 Bratislava, Slovakia

2 Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstrasse 9, D-64287 Darmstadt, Germany

3 Reliance Industries Ltd., Petroleum Business (E&P), Reliance Corporate Park, Block 5, A Wing, Navi Mumbai-400701, India

4  Institute of Engineering Geology, Technical University Ostrava, 17. listopadu 15, Ostrava, Czech Republic

5 G-trend s.r.o., Rovniankova 2475/5, 851 02 Bratislava, Slovak Republic

10  Structural complexity along transform margins

Roxana Stanca1 and Douglas Paton1

1 Basin Structure Group, Institute of Applied Geosciences, School of Earth and Environment, University of Leeds, Leeds, UK

11 The relationship between pull-apart basins and magmatism during continental break-up

Tony Doré1 and Erik Lundin2 

1 Equinor (UK) Ltd., One Kingdom Street, London W2 6BD, UK.

2 Equinor, Arkitekt Ebbels vei 10, 7053 Trondheim, Norway

12  The role of continental transform faults in continental break-up 

Erik Lundin1 and Tony Doré2

1 Equinor, Arkitekt Ebbels vei 10, 7053 Trondheim, Norway

2 Equinor (UK) Ltd., One Kingdom Street, London W2 6BD, UK.

13  The Agulhas Transform Margin: A long lived structural history on the road to South Atlantic connection 

Francois Sapin1, P. Chaffel1 and F. Sany2 

1TOTAL, avenue Larribau, 64000 Pau, France

2CVA Engineering, 2 rue Myron Kinley, 64000 Pau, France

14  Somali Basin’s crustal structure and post-rift deformation along the Davie FZ: a recorder of Madagascar and India drifts 

Jean-Claude Ringenbach1, Thomas Maurin1 and Chappey, C.2

1 Total sa, Structural Geology Group, CSTJF Av. Larribau, 64018 Pau cedex

2 Total sa, Africa Hub, CSTJF Av. Larribau, 64018 Pau cedex

15  The role of intra-continental strike slip systems on tectonic-magmatic process during continental breakup and transform fault evolution 

Douglas Paton1, Philip Thompson2 and Christian Heine2

1 Basin Structure Group, Institute of Applied Geosciences, School of Earth and Environment, University of Leeds, Leeds, UK

2 Shell International Limited, 40 Bank Street, Canary Wharf, London, E14 5NR, UK

16  Initiation of transform continental margins: strain partitioning, lithosphere weakening, and the relationships between marginal plateaus, mantle plumes and transform margins

Christophe Basile1, Loncke, L.2, Roest, W. R.3, Graindorge, D.4, Klingelhoefer, F.3 and Heuret, A.5 

1  ISTerre, UMR–CNRS 5275, Université Grenoble-Alpes, Maison des Géosciences, 1381 rue de la Piscine, 38400 St Martin d’Hères, France 

2  Université de Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, 52 avenue Paul Alduy, 66860, Perpignan, France 

3  Ifremer, Centre de Brest, Institut Carnot–Ifremer EDROME, UR Géosciences Marines, BP 70, 29280 Plouzané, France 

4  Université de Bretagne Occidentale (UBO)/UMR 6538 du CNRS ‘Domaines Océaniques’, Institut Universitaire Européen de la Mer (IUEM), Technopole Brest Iroise, Place Nicolas Copernic, 29280 Plouzané, France 

5  Université de Guyane, Campus de Troubiran, 97300 Cayenne – France

17  Tectonic controls on sedimentation patterns along the West African Transform Margin 

Anne McAfee1, Luisa Man1 and Corneliu Cosovanu1

1 Integrated Geological Solutions, Core Laboratories UK, Unit 23, Ormside Way, Redhill, Surrey UK, RH1 2LW

18  Polyphased sedimentary basins and the importance of contourites along transform marginal plateaus – Examples from the Demerara case study. 

Lies Loncke1, W.R. Roest², C. Basile3, AS. Fanget1, C. Tallobre1

1University of Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens (CEFREM), UMR 5110, 52 Avenue Paul Alduy, 66100 Perpignan, France, lies.loncke@univ-perp.fr

2IFREMER, Unité de Recherche Géosciences Marines, 29280, Plouzané, France

3Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerre,

19  Analogy between the transform margins of Madagascar and West Africa: implications for deepwater exploration 

Gabor Tari1 

1 OMV Upstream, Vienna, Austria

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