Crustal shortening and thickening in Neoarchean granite-greenstone belts: A case study from the link between the ∼2.7 Ga Elu and Hope Bay belts, northeast Slave craton, Canada

The petrostructural characteristics and 207Pb/206Pb zircon data from the Ngomedzap-Akongo area (Nyong complex, SW-Cameroon)

“…This is consistent with the diagram of the tectonic model shown in Fig. 6 (Sanderson and Marchini 1984;Tikoff and Teyssier 1994;Chardon et al 2009;Mvondo et al 2017). Baratoux et al (2011) described similar tectonic evolution marked by compressional regime later overprinted by transpression and thrust fault tectonics in the Eburnean orogeny in West Africa as well as Carreras and Druget (2018) and Fossen et al (2018) when discussing the progressive or multiphase nature of orogenic deformations.…”

“…Those crustal deformations represent the key-criteria for characterization of orogenic belts. As natural laboratories, ancient terranes helped to answer some fundamental questions about the modes of crustal growth and lithospheric deformation through time (Sanderson and Marchini 1984;Tikoff and Teyssier 1994;Choukroune et al 1995;Tikoff and Fossen 1995;Chardon and Jajananda 2008;Chardon et al 2009;Gapais et al 2009;Mvondo et al 2017;Nakapelyukh et al 2018). Such terranes display many deep-seated rocks exhumed from various depths inducing fold-and-thrust belts between colliding continental blocks (Price 1981;Pfiffner 2006;Omori et al 2016;Kooijman et al 2017).…”