The Importance of Residual Source Material (Restite) in Granite Petrogenesis

Overlapping Sr–Nd–Hf–O isotopic compositions in Permian mafic enclaves and host granitoids in Alxa Block, NW China: Evidence for crust–mantle interaction and implications for the generation of silicic igneous provinces

“…The restite model is mostly applied to S-type granites where the microgranular enclaves have a metamorphic or residual sedimentary fabric (Chappell et al, 1987;White et al, 1999). A critical feature of the restite model is linear chemical variations, which are observed in many calc-alkaline plutonic suites (e.g., Chappell and White, 1991;Chappell et al, 1987;Collins, 1998).…”

“…Two other proposals suggest that they are: (1) fragments of recrystallized, refractory metamorphic rocks or of melt residues from the granite source (e.g., Chappell and White, 1991;Chappell and Wyborn, 2012;Chappell et al, 1987); or (2) cumulates of early-formed crystals or chilled margins (e.g., Bonin, 1991;Collins et al, 2006;Donaire et al, 2005;Shellnutt et al, 2010;Tindle and Pearce, 1983). Distinguishing between these scenarios requires the ability to characterize the primary source of both the microgranular enclaves and their host granitoids.…”

Late Early Cretaceous adakitic granitoids and associated magnesian and potassium‐rich mafic enclaves and dikes in the Tunchang–Fengmu area, Hainan Province (South China): Partial melting of lower crust and mantle, and magma hybridization

“…Genetic models for mafic enclaves include origins as foreign xenoliths (usually country rocks) (e.g., Vernon, 1983;Bacon, 1986;Xu et al, 2006), refractory and residual phase assemblages derived from granitoid sources (e.g., Chappell et al, 1987;Chappell and White, 1991), chilled material or accumulations of early-formed co-genetic crystals (e.g., Tindle and Pearce, 1983;Bonin, 1991;Schonenberger et al, 2006;Shellnutt et al, 2010), and the products of mixing between distinct mafic and felsic magmas (e.g., Holden et al, 1987;Wiebe et al, 1997;Barbarin, 2005;Browne et al, 2006;Yang et al, 2006Yang et al, , 2007Chen et al, 2009;Kent et al, 2010;Sun et al, 2010). The mafic enclaves in the Tunchang granodiorites are ellipsoidal, spindle-shaped, or elongate, and exhibit typical magmatic texture (Figs.…”

“…First, they may be foreign xenoliths (usually country rocks) incorporated in their solid state during emplacement and/or crystallization of the host magma (e.g., Vernon, 1983;Bacon, 1986;Xu et al, 2006). Second, they may be recrystallized, refractory and residual phase assemblages, derived from the sources of the granitoid, which did not reach a critical melt fraction during differentiation (e.g., Chappell et al, 1987;Chappell and White, 1991). Third, they may be partly chilled materials or accumulations of early formed genetically related crystals that were trapped in their own residual liquid, usually referred to as "autoliths" (e.g., Tindle and Pearce, 1983;Bonin, 1991;Schonenberger et al, 2006;Shellnutt et al, 2010).…”

Cretaceous to Early Tertiary Granites and Magma Mixing in South Korea : Their Spatio-temporal Variations and Tectonic Implications (Multiple Slab Window Model)

“…각 지역의 주요 암 상을 출현 빈도에 따라 나열하면, 옥천분지에는 알칼 리장석화강암, 섬장화강암(syenogranite), 몬조화강암 과 화강섬록암, 영동-광주분지에는 몬조화강암과 섬장 화강암 그리고 경상분지에는 몬조화강암, 섬장화강암, 화강섬록암과 알칼리장석화강암이다 (Jwa, 2002). 경상분지에 분포하는 화강암은 둥근형태의 산점상 심성암체로 천소 관입(마이아롤리틱 정동, 세립질의 미문상조직, 각섬석 지압계)을 하였으며, 각 암체의 지 열역사 해석을 통해 관입 후 빠른 냉각을 겪었던 것으 로 보고되었다 (Shin and Nishimura, 1993;Lee et al, 1995 (Chappell et al, 1987;Chen et al, 1989;Dodge and Kistler, 1990;Barbarin and Didier, 1991;Didier and Barbarin, 1991;Elburg, 1996;Mass et al, 1997). 1998, 2000; 김춘식 외, 1999; 김종선 과 이준동, 2000).…”