Fig. 1. Geological and sample location map of the Rottenstone Domain in the vicinity of Davin Lake. Inset: location of the study area in the Trans-Hudson orogen. Prov., Province; HB., Hansen Lake block; D., Domain; C-SBZ, Churchill–Superior Boundary Zone.

Fig. 2. Chemical classification of igneous rocks in the Rottenstone Domain. ( a ) CIPW normative plot for the metavolcanic rocks. Ab, albite; An, anorthite; Opx, orthopyroxene; Jd, jadeite; Ts, tschermakite. ( b ) Mesonorm plot for the granitoid rocks. Q, quartz; A, normative orthoclase; P

Fig. 11. Geochemical discriminators of tectonic setting for the Rottenstone Domain. (a–c) Metavolcanic rocks. E-MORB, enriched mid-ocean ridge basalt; N-MORB, normal MORB; P-MORB, primitive MORB; VAB, volcanic-arc basalt; WPA, within-plate alkali basalt; WPT, within-plate tholeiitic basalt. (d–f

Fig. 13. Possible sequence of thermal–tectonic–magmatic events in the Rottenstone Domain (RS). (a) ∼1850 Ma: post-emplacement of the Wathaman Batholith (WB) into the Hearne continental margin (HC). Accumulation of sediments in the Rottenstone inter-arc basin. ( b ) ∼1835 Ma: convergence tectonics

), and the majority of the granitoid rocks (15 of 22). (See text for further details.) (d) Spatial variation of εNd i (cf. Chauvel et al. 1987 ). All rocks in the Rottenstone Domain (metavolcanic rocks, metasedimentary rocks, granitoid rocks) appear to be intermediate in composition between those of the La Ronge

; RD: Rottenstone Domain; and WL: Wollaston Lake; R: River; L: Lake.

Lake block; KD = Kisseynew Domain; LRD = La Ronge Domain; PC = Phanerozoic cover rocks; PLD = Peter Lake Domain; RD = Rottenstone Domain; SBZ = Superior boundary zone; SID = Southern Indian Domain.

Fig. 1. Major geological divisions of the Trans-Hudson orogen (modified from Lucas et al. 1994 ). WD, Wollaston domain; WB, Wathaman batholith; RD, Rottenstone domain; LRD, La Ronge domain; GD, Glennie domain; HLB, Hanson Lake block; KD, Kisseynew domain (Kisseynew Gneiss Belt); FFB, Flin Flon

Fig. 11. Tectonic development model of the western Trans-Hudson Orogen. FF, Flin Flon domain; GD, Glennie domain; HEC, Hearne Craton; KD, Kisseynew domain; LR, La Ronge domain; NFSZ, Needle Falls shear zone; RD, Rottenstone domain; SASK, Sask Craton; SUB1,2,3, oceanic plate subduction zones; SUPC

Ronge Domain; RD, Rottenstone Domain; TF, Tabbernor fault; W, Archean windows; WB, Wathaman Batholith; WD, Wollaston Domain. The small box shows the area of the present study.

Fig. 11. Two-dimensional inversion resistivity model for profile L. The seven labelled features are discussed in the text. WFB, Wollaston fold belt; RD, Rottenstone domain; LRB, La Ronge belt; HLB, Hanson Lake block; KGB, Kisseynew gneiss belt; TB, Thompson belt. VE, vertical exaggeration.

Fig. 6. Rb–Sr and Sm–Nd whole-rock isochron-type diagrams. Symbols as in Fig.  3 . (a) White granitoid rocks. (b) Pink granitoid rocks. (c) White and pink leucosome combined. The least-squares fits to the data suggest emplacement ages of ca. 1840–1800 Ma for granitoid rocks of the Rottenstone