fig02.htm

Figure 2. Archaean basement of the Pechenga structure in the KSDB section [Mitrofanov and Vetrin, 1998].
1 - cross-bedded sandstone with conglomerate interbeds (Proterozoic), 2 - metamorphosed crust of weathering, conglomerate, 3 - biotite-plagioclase gneiss with high-alumina minerals, 4 - biotite-(amphibole)-plagioclase gneiss, 5 - BIF, amphibole-magnetite-quartz schist, 6 - para- and ortho-amphibolites, 7 - rocks of the amphibolite-tonalite-plagiogranite complex, 8 - syn- and post-folde plagiomigmatite, granite and pegmatite, 9 - muscovite-microcline metasomatic rocks, 10 - post-folded granite and pegmatite, 11 - chloritisation, 12 - contacts between layers and bodies, 13 - boundaries of rock units, 14 - mylonitisation, cataclasis, brecciation, 15 - tectonic faults and sutures, 16 - number of shafts in chronological order.


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