fig13.htm

Figure 13. Hornblende pole figures of amphibolite samples calculated on the ODF basis. K11345, K8933 - samples from the Kola superdeep borehole; p1365, p1356 - samples from the surface of Mustantunturi area. The maximum values of the pole density in the units multiple of random distribution are indicated in the bottom right.
Note: The samples taken from the depth and the surface (four gneisses and four amphibolites) exhibit identical mineral (Figure 1) and chemical composition and the mineral density. Four core samples represent typical lithologies of the Archean basement (K11345, K8933 - amphibolites; K9002, K8658- gneisses) of the borehole SG-3. The sample numbers indicate the depth of sample recovery in meters. Four samples (pl365, pl356 - amphibolites; pl363, pl358 - gneisses) from surface outcrops stand for the Archean basement. They were selected from the Mustantunturi site at a distance of 45 km northeast of the borehole because of similarities of geological structures.


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