Table 2 Description of samples of the ESCB Variscan rocks studied by U/Pb zircon geochronology
Name of the pluton | Sample no. | Sample location | Petrography |
|---|---|---|---|
Brnjica | BR-1 | – | Biotite tonalite–granodiorite, equigranular, undeformed to only slightly deformed (postmagmatic), fresh to slightly sericitized |
BR-4 | – | ||
Neresnica | NR-26 | 44°24.275′ 21°44.070′ | Biotite granodiorite, equigranular, slightly deformed. Very similar to the Brnjica samples with more abundant microcline in the interstitial spaces (see Fig. 2a) |
NR-25 | 44°24.275′ 21°44.070′ | ||
Ziman | ZI-4 | 44°23.393′ 21°45.654′ | Garnet-bearing muscovite granite with textural relationships that suggest synkinematic crystallization, ductile deformation and recrystallization (see Fig. 2b) |
Gornjane–Tanda–Blizna | BZ-18 | 44°21.074′ 22°01.759′ | Biotite quartz-monzonite with oikocrysts of K–F and traces of muscovite; slightly inequigranular, postmagmatically sheared and recrystallized |
GR-5 | 44°14.910′ 22°09.062′ | Hornblende-biotite granodiorite to quartz-monzonite, coarse-grained and slightly banded and schistose; probably cummulitic in character | |
TN-13 | – | Biotite–hornblende granodiorite, fine- to medium-grained, equigranular | |
TN-7 | 44°13.848′ 22°08.100′ | Biotite syenite to syenogranite, large K-feldspar, rich in apatite and primary epidote; TN-8 also contains primary calcite | |
TN-8 | 44°13.848′ 22°08.100′ | ||
Aldinac | AL-5 | 43°30.975′ 22°27.538′ | Biotite (± hornblende) granodiorite porphyry-rhyodacite, undeformed, very rich in accessory phases (apatite, allanite, epidote and sphene) (see Fig. 2d) |
Janja | JN-43 | 43°25.117′ 22°31.420′ | Hornblende-biotite syenodiorite, equigranular, very rich in accessory phases (apatite, allanite, epidote and sphene) (see Fig. 2d) |
Ravno Bučje | RB-38 | 43°25.583′ 22°32.836′ | Biotite granodiorite with traces of muscovite, inequigranular, slightly recrystallized, very rich in accessory phases (apatite, allanite, epidote and sphene) (see Fig. 2d) |
Plavna | PL-17 | 44°17.706′ 22°15.591′ | Biotite (± hornblende) granodiorite to monzogranite, equigranular with K-feldspar both in interstices and as poikilitically enclosing plagioclase. |
Suvodol | SD-29 | 43°42.361′ 22°22.928′ | Hornblende-biotite (spessartite) lamprophyre, slightly schistose, moderately to intensively chloritized, very similar in composition to lamprophyres associated with other plutons studied here |