Chemical homogeneity of high-Cr chromitites as indicator for widespread invasion of boninitic melt in mantle peridotite of Bir Tuluha ophiolite, Northern Arabian Shield, Saudi Arabia

Making Cratonic Lithospheric Mantle

“…The Rudnick et al, 1993;Simon et al, 2003;Wittig et al, 2008;Lee et al, 2011, and reference therein) and forearc peridotites (Bénard et al, 2017;Ohara & Ishii, 1998;Parkinson & Pearce, 1998;Pearce et al, 2000;Savov et al, 2005;Savov et al, 2007). SSZ ophiolitic peridotites (Batanova et al, 2011;Büchl et al, 2002;Habtoor et al, 2017;Khalil & Azer, 2007;Khedr & Arai, 2017;Liu et al, 2016;Mahéo et al, 2004;Marchesi et al, 2009;Moghadam et al, 2015;O'Driscoll et al, 2012;Pagé et al, 2009;Rajabzadeh & Dehkordi, 2013;Saka et al, 2014;Uysal et al, 2012;Uysal et al, 2015;Uysal et al, 2016;Zhang et al, 2016;Zhou et al, 1996), abyssal peridotites (Aumento & Loubat, 1971;Brandon et al, 2000;Cannat et al, 1995;Casey, 1997;Coogan et al, 2004;Godard et al, 2008;Harvey et al, 2006;Miyashiro et al, 1969;Niu, 2004;Niu & Hékinian, 1997;Paulick et al, 2006;Snow & Dick, 1995;…”

Suprasubduction-zone origin of the podiform chromitites of the Bir Tuluhah ophiolite, Saudi Arabia, during Neoproterozoic assembly of the Arabian Shield

“…Published works have concluded that the ophiolites of Saudi Arabia formed in a variety of tectonic settings, ranging from mid-ocean ridge (MOR) to supra-subduction zone (SSZ) settings (e.g. Habtoor et al, 2017;Abuamarah, 2019 a,b;Gahlan et al, 2020), but most recent studies have preferred a SSZ setting for Arabian Shield ophiolites (e.g. Nassief et al, 1984;Pallister et al, 1988;Stern et al, 2004;Habtoor et al, 2017;Abuamarah, 2019 a,b;Gahlan et al, 2020).…”

“…Habtoor et al, 2017;Abuamarah, 2019 a,b;Gahlan et al, 2020), but most recent studies have preferred a SSZ setting for Arabian Shield ophiolites (e.g. Nassief et al, 1984;Pallister et al, 1988;Stern et al, 2004;Habtoor et al, 2017;Abuamarah, 2019 a,b;Gahlan et al, 2020). Furthermore, seafloor spreading in the vicinity of a subduction system can form ophiolite sequences in both fore-arc and back-arc environments (Pearce, 2003;Azer and Stern, 2007); the distinctions between ophiolites formed in these particular settings have been increasingly recognized recently.…”

“…The genesis of podiform chromitites in various tectonic settings has been a subject of considerable controversy for many years (e.g. Roberts, 1988;Matveev and J o u r n a l P r e -p r o o f Journal Pre-proof Ballhaus, 2002;Habtoor et al, 2017;Khedr and Arai, 2017). The most accepted mechanism for the formation of podiform chromitite is melt-peridotite interaction and subsequent mixing (e.g.…”

“…Discussions of the origin and geotectonic setting of chromitite ore bodies in general have been echoed by specific debate about the podiform chromitites of the ANS (e.g. Habtoor et al, 2017;Khedr and Arai, 2017). Podiform chromitites from the Arabian Shield are commonly enveloped by dunite within the generally harzburgite-dominated depleted mantle section (e.g.…”