Growth of complex sheeted zones during recycling of older magmatic units into younger: Sawmill Canyon area, Tuolumne batholith, Sierra Nevada, California

Magmatic erosion of the solidification front during reintrusion: the eastern margin of the Tuolumne batholith, Sierra Nevada, California

“…Structures in the Potter Point area represent ''frozen-in'', initial to advanced stages of this internal stoping which occured through the propagation of orthogonal sets of synmagmatic fractures. Similar sets of fractures, such as those described in this paper, were documented in other domains along the eastern margin of the batholith (the Sawmill Canyon and Mammoth Peak areas; Ž ák Paterson et al 2008) and were also interpreted to assist stoping and ''recycling'' of magma mush along internal contacts in the magma chamber . The solidification front break-up then leads to the complete removal of resident magma and results in the truncation of intrusive units along discordant internal contacts (e.g., Ž ák and .…”

“…Instead, our detailed mapping of much of the eastern batholith margin (Ž ák Ž ák et al 2007; this study) revealed that both the Kuna Crest and Half Dome units are texturally homogeneous over broad scales or show gradational changes in the lobes extending outward from the main batholith . The sole exceptions are thin sheets of the Kuna Crest granodiorite preserved in the narrow (tens of meters) aureole, and a few locally complex sheeted zones described in our previous work interpreted to have formed within the existing batholith (Ž ák Paterson et al 2008).…”

“…In summary, we proposed elsewhere that stoping and ''reworking'' resulting in recycling of older resident magma by younger intruding magma batches was a common process along the main internal contacts in the Tuolumne magma chamber Paterson et al 2008). Structures in the Potter Point area represent ''frozen-in'', initial to advanced stages of this internal stoping which occured through the propagation of orthogonal sets of synmagmatic fractures.…”

Origine et développement de litages dans des roches de composition granitique /

“…Les enclaves mafiques se produisent plutôt dans des intrusions relativement riches en liquide magmatique alors que les filons seraient plutôt caractéristiques des magmas avec un plus fort taux de cristallisation . Paterson et al, 2008;Barbey, 2009 . De plus, les litages magmatiques sont sensiblement de plus petite taille que ceux que l'on peut parfois rencontrer dans les roches sédimentaires ).…”

Unusually dumbbell-shaped Guposhan–Huashan twin granite plutons in Nanling Range of south China: Discussion on their incremental emplacement and growth mechanism

“…Paterson and Vernon, 1995;Vigneresse and Bouchez, 1997;Miller and Paterson, 2001;Coleman et al, 2004;Glazner et al, 2004;de Saint-Blanquat et al, 2006;Pasquarè and Tibaldi, 2007;Morgan et al, 2008;Michel et al, 2008;Miller, 2008;Paterson et al, 2008;Miller et al, 2011) as well as theoretical models (e.g. Annen and Sparks, 2002;Menand, 2008) regarding modes of pluton emplacement and development, indicates that many igneous plutons throughout the continental crusts are the result of incremental amalgamation of repeated, smaller, discrete intrusions over tens of thousands (Michel et al, 2008) to millions of years Coleman et al, 2004;Matzel et al, 2006;Miller et al, 2007;Walker et al, 2007;Burgess and Miller, 2008).…”