Morgane Gillard

TL;DR: In this paper, the authors studied the most distal Australian-Antarctic rifted margins and proposed a new interpretation, linking the sedimentary architectures to the nature and type of basement units, including hyperextended crust, exhumed mantle, embryonic, and steady state oceanic crusts.

TL;DR: In this article, the authors investigated the magmatic budget related to lithospheric breakup along two high-resolution long-offset deep reflection seismic profiles across the SE Indian and Uruguayan (magma-rich) rifted margins.

TL;DR: In this article, the authors show that extensional detachment faults related to mantle exhumation form out-of-sequence, and initiate as normal upward concave faults, which can be best explained by an alternation between a pure shear mode (development of symmetric arrays of normal faults) and a simple shear mechanism with a continuous delocalization and re-localization of the deformation in the footwall of the previous ex-humation fault.

TL;DR: High-resolution seismic reflection profiles are presented that show that onset of oceanic seafloor spreading is associated with the formation of a hybrid crust in which thinned continental crust and/or exhumed mantle is sandwiched between magmatic intrusive and extrusive bodies.

TL;DR: In this article, the authors present evidence for cyclic delocalization and re-localization of deformation, resulting in an apparent symmetry of the exhumed mantle domain, which may explain the observed transition from fault-controlled to magma-controlled strain accommodation and the transition to more symmetric and localized accretion associated with the formation of a stable spreading center.