Rifting Evolution of the Central Campos Basin as a Hybrid Rifted Margin: Insights From Tectonic and Magmatic Structures

Abstract Recent observations and drilling campaigns have challenged the typical models for rifted margins by providing evidence for the existence of intermediate cases between the magmatic and amagmatic end‐members. In this contribution, we document the evolution of the Central Campos rifted margin, located in southeast Brazil, based on a combined interpretation of potential field, well, and high‐resolution seismic data. From the necking to the distal domain, we describe the geometries of low‐angle detachment faults and their associated domain‐bounding breakaways that led to the formation of metamorphic core‐complexes and exhumation of middle‐lower continental crust. We show that extension was accommodated by crustal‐scale faults but also accompanied by intense magmatic activity, evidencing a complex interaction between faults and magma. The distal margin exhibits seaward‐dipping reflectors that are interpreted to have been emplaced over exhumed and intruded lower crust, followed by the formation of a magmatic crust and a magmatic outer domain. Based on these findings, we propose a conceptual model for the tectono‐magmatic evolution of the Central Campos and summarize the main characteristics that frame it as a potential archetype for hybrid rifted margins.