Evolution of Deformation Fabrics Related to Petrogenesis of Upper Mantle Xenoliths Beneath the Baekdusan Volcano

Abstract

Knowledge of the formation and evolution of cratonic subcontinental lithospheric mantle is critical to our understanding of the processes responsible for continental development. Here, we report the deformation microstructures and lattice preferred orientations (LPOs) of olivine and pyroxenes alongside petrological data from spinel peridotite xenoliths beneath the Baekdusan volcano. We have used these datasets to constrain the evolution of deformation fabrics related to petrogenesis from the Baekdusan peridotites. Based on petrographic features and deformation microstructures, we have identified two textural categories for these peridotites: coarse- and fine-granular harzburgites (CG and FG Hzb). We found that mineral composition, equilibrium temperature, olivine LPO, stress, and extraction depth vary considerably with the texture. We suggest that the A-type olivine LPO in the CG Hzb may be related to the preexisting Archean cratonic mantle fabric (i.e., old frozen LPO) formed under high-temperature, low-stress, and dry conditions. Conversely, we suggest that the D-type olivine LPOs in the FG Hzb samples likely originated from later localized deformation events under low-temperature, high-stress, and dry conditions after a high degree of partial melting. Moreover, we consider the Baekdusan peridotite xenoliths to have been derived from a compositionally and texturally heterogeneous vertical mantle section beneath the Baekdusan volcano.

Influence of Melt‐Peridotite Interactions on Deformation and Seismic Properties of the Upper Mantle Beneath a Destroyed Craton: A Case Study of the Damaping Peridotites From the North China Craton

“…In addition, shear wave splitting measurements revealed significant seismic anisotropy in the upper mantle of the NCC (e.g., Chang et al., 2012; Z. Huang et al., 2011; L. Zhao & Zheng, 2005, 2007), yet the depth of origin of seismic anisotropy is still in dispute (e.g., Chang et al., 2012; L. Zhao & Zheng, 2005). Compared with abundant geochemical and geophysical studies, however, microstructure and deformation of peridotite xenoliths from the NCC had received less attention (e.g., Chin et al., 2020; M. Park et al., 2020; Y. Park & Jung, 2014).…”

Evolution of Olivine Fabrics During Deep Subduction and Exhumation of Continental Crust: Insights From the Yinggelisayi Garnet Lherzolite, South Altyn, NW China

“…Olivine fabrics are described in terms of their relationship to the crystallographic framework ( x , y , and z axes), and can provide important information for understanding the evolution of the upper mantle, mantle flow pattern, mantle dynamics and tectonics (Bernard et al., 2019; Jung, 2017; Jung & Karato, 2001; Jung et al., 2006, 2020; Karato et al., 2008; Mainprice, 2007; Michibayashi et al., 2016; Park et al., 2020; Skemer & Hansen, 2016). Based on natural and experimental studies, olivine fabrics are commonly categorized into A‐, B‐, C‐, D‐, E‐, and AG‐type, and have dominant slip systems of (010)[100], (010)[001], (100)[001], {0kl}[100], (001)[100], and (010)[h0l], respectively (Figure 1; Couvy et al., 2004; Holtzman et al., 2003; Jung, 2017; Jung & Karato, 2001; Jung, Mo, & Green, 2009; Jung, Mo, & Chol, 2009; Jung et al., 2013; Katayama et al., 2004; Katayama & Karato, 2008; Mainprice, 2007; Ohuchi et al., 2011).…”

“…Based on natural and experimental studies, olivine fabrics are commonly categorized into A‐, B‐, C‐, D‐, E‐, and AG‐type, and have dominant slip systems of (010)[100], (010)[001], (100)[001], {0kl}[100], (001)[100], and (010)[h0l], respectively (Figure 1; Couvy et al., 2004; Holtzman et al., 2003; Jung, 2017; Jung & Karato, 2001; Jung, Mo, & Green, 2009; Jung, Mo, & Chol, 2009; Jung et al., 2013; Katayama et al., 2004; Katayama & Karato, 2008; Mainprice, 2007; Ohuchi et al., 2011). Each type of olivine fabric has been associated with different formation conditions and geological settings (Bernard et al., 2019; Harigane et al., 2011; Jung, 2017; Jung, Mo, & Chol, 2009, 2020; Katayama & Karato, 2006; Lee & Jung, 2015; Michibayashi et al., 2016; Park & Jung, 2015; Park et al., 2020; Shao et al., 2021; Q. Wang et al., 2013; Y. Wang et al., 2013; Xu et al., 2005, 2006). A‐and D‐type olivine fabrics were commonly observed in mantle rocks (Ben‐Ismail & Mainprice, 1998; Boudier & Nicolas, 1995; Cao et al., 2017; Falus et al., 2008; Skemer & Karato, 2008; Sun et al., 2016).…”