Proposed Title 1: - Queen's University

Figure 2.3. A: Detailed geologic map of the Cinch Lake area showing main lithological units
and structural elements and B: Northwest-southeast geological cross-sections (line AA’)
across the Main Ore shear zone illustrating the listric oblique-normal and dextral sense of the
fault movement, location of the mylonitic and cataclasite portions of the fault zone and the
uranium mineralization intercepted in drill hole (see Appendix I for detailed structural
measurements and steroplots).
The leucocratic metagranitoid unit has a coarse-grained cataclasite texture in the
southeast part passing gradually into a fine-grained ultracataclasite texture toward the
northwest (Fig. 2.3).
The hornblende-feldspar gneiss outcrops within the fault zone (Fig. 2.3). The rock is
foliated, generally boudinaged, parallel to the dominant foliation (N240 o ) (Fig. 2.4C) and
composed of hornblende and feldspar porphyroclasts (Fig. 2.4D), which are locally
associated with biotite, chlorite, sericite, epidote and titanite.
The melanocratic porphyroclastic metagranitoid rocks are exposed northwest in the
footwall (Fig. 2.3). The unit is mylonite-dominated and consists of a mélange of
mylonitized metavolcano-sedimentary rocks (Figs. 2.4E and 2.4F), quartz-feldspar
mylonite (Figs. 2.4G and 2.4H) and boudinaged and foliated hornblende-feldspar gneiss.
32