At the Western Queen, the geology is steep west dipping and comprises of intercalated sheared amphibolites
of mafic to ultramafic composition with thin iron formation horizons, komatiitic basalt, dolerite sills, and talc chlorite schists.
The samples selected were gneisses, schists and amphibolites
. Figure 3 shows the thin sections of rocks from the SG-3 Archaean section.
A slight enrichment of HREEs with respect to LREEs is observed, with a very noticeable Pr enrichment in sample ARQ-181 (garnet amphibolite
(1990) the high-grade metamorphic rocks in both the Chuggin Road and Lime Hill units include biotite, bioitite-cordierite, and sillimanite-bearing paragneiss, migmatitic paragneiss, marble, quartzite, amphibolite
, and tonalitic orthogneiss.
Wang, "Experimental study on dynamic mechanical properties of amphibolites
under impact compressive loading," Chinese Journal of Rock Mechanics and Engineering, vol.
Their protolith corresponds to medium-grained pelitic sediments, which were affected by a metamorphism reaching the amphibolite
South Purulia Shear Zone (SPSZ) (Figure 1, after ) consists of mainly granite gneiss, amphibolites
, phyllites, schist, carbonatite, and quartz-magnetite-apatite rocks and is of early mesoproterozoic age.
The sources of albite are dominantly from the weathering of amphibolite
, tonalite, diorite, and granodiorite that intruded Maru schist belt.
Chang, "True triaxial strength of the KTB amphibolite
under borehole wall conditions and its use to estimate the maximum horizontal in situ stress," Journal of Geophysical Research, vol.
The dominant lithology encountered during the drilling was a coarse-grained metamorphic amphibolite
facies ultramafic unit.
According to these authors above, igneous rocks of this area occur as small, circular to oval outcrops and include members of the Older granite suite mainly granites, granodiorites and syenites while associated schists in the area are: quartz-biotite schist, amphibolite
schist, muscovite schist and quartzitic schist.