Subduction initiation from the earliest stages to self-sustained subduction: Insights from the analysis of 70 Cenozoic sites

Subduction Initiation at the Solomon Back‐Arc Basin: Contributions From Both Island Arc Rheological Strength and Oceanic Plateau Collision

“…Subduction initiation (SI) is key to study the evolution of the solid Earth and has profound implications for plate motion (Arculus et al., 2015; Crameri et al., 2020; Gerya et al., 2015; Lallemand & Arcay, 2021; Maunder et al., 2020; Niu, 2016; Stern & Gerya, 2018; Sutherland et al., 2020). Recent researches propose that there are two types of subduction initiation: vertically forced and horizontally forced SI (Crameri et al., 2020; Lallemand & Arcay, 2021).…”

Subduction Polarity Reversal Triggered by Oceanic Plateau Accretion: Implications for Induced Subduction Initiation

“…(2020) divided SI into vertical‐dominant and horizontal‐dominant, with the horizontal force potentially arising from tectonic forces. As the strength of oceanic lithosphere increases rapidly when it ages, negative buoyancy alone may not be sufficient to cause an SI event (Cloetingh et al., 1989; Hall et al., 2003; Lallemand & Arcay, 2021). Other factors, such as preexisting heterogeneities, buoyancy contrasts, have also been proposed to foster the development of SI (Arculus et al., 2019; Baes et al., 2011a, 2011b; Beaussier et al., 2019; Crameri et al., 2020; Gurnis et al., 2004; Hall et al., 2003; Kim et al., 2018; Kiss et al., 2019; Leng & Gurnis, 2015; Lu et al., 2021; Maffione et al., 2015; Mao et al., 2017; Maunder et al., 2020; Niu et al., 2003; Stern & Gerya, 2018; Zhang et al., 2020; Zhong & Li, 2019, 2020; Zhong & Li, 2020; Zhou et al., 2018, 2020).…”

“…Other factors, such as preexisting heterogeneities, buoyancy contrasts, have also been proposed to foster the development of SI (Arculus et al., 2019; Baes et al., 2011a, 2011b; Beaussier et al., 2019; Crameri et al., 2020; Gurnis et al., 2004; Hall et al., 2003; Kim et al., 2018; Kiss et al., 2019; Leng & Gurnis, 2015; Lu et al., 2021; Maffione et al., 2015; Mao et al., 2017; Maunder et al., 2020; Niu et al., 2003; Stern & Gerya, 2018; Zhang et al., 2020; Zhong & Li, 2019, 2020; Zhong & Li, 2020; Zhou et al., 2018, 2020). A comprehensive statistical study on SI events that occurred in the last ∼100 Ma indicates that most SI events are induced (Crameri et al., 2020; Lallemand & Arcay, 2021). Recent numerical simulations have revealed that SI at passive continental margins, which was previously considered to be typical spontaneous SI sites (Erickson & Arkani‐Hamed, 1993; Goren et al., 2008; Marques et al., 2014; Nikolaeva et al., 2010, 2011; Niu et al., 2003), also require horizontal external stresses (Baes & Sobolev, 2017; Zhong & Li, 2019).…”

Temporal Evolution of Island Arc Magmatism and Its Influence on Long-Term Climate: Insights From the Izu Intra-Oceanic Arc

“…Hence, short-term variations in mantle flows, slab fluids, extent of mantle melting, length of melting column and arc crustal thickness are rapidly adjusted, so mature island arcs may preserve a relatively steady location over long periods of time to stabilize, consolidate and develop. However, some subduction zones do not become self-sustained, and they do not reach a steady state in arc magmatic activity (Gerya et al, 2008;Lallemand and Arcay, 2021). Instead, they abort shortly after their inception, such as the Troodos supra-subduction zone ophiolite in Cyprus (Pearce and Robinson, 2010).…”