Константиновская метаконгломератовая свита в Сакар-Планине и Марицской зоне между Симеоновградом и Димировградом, Хасковская область

Pages: 
pp. 73-82
Abstract: 

D. Kozhoukharov. Konstantinovo Metaconglomerate Formation in Sakar Mountain and Marica Zone between Simeonovgrad and Dimitrovgrad, Haskovo District. Konstantinovo Metaconglomerate Formation is introduced for the first time in the Bulgarian lithostratigraphic nomenclature. It is represented by fine to medium in pebble size conglomerates with gne1ss-schist to gneissic ground mass and irregularly ditsributed pieces of pegmatites and aplites, less commonly of quartz-epidote-muscovite schists, microgranites and monomineral grains of quartz and feld spars. The pieces are rounded, lens-shaped or flattened, with ellipsoidal crosssection and dominant dimensions 2 × 3 to 5-7 × 3 × 5 cm, rarely to 15 cm in diameter. The ground mass is formed of coarse-grained mica, quartz and plagioclase. The metamorphic evolution of the rocks of Konstantinovo Formation reflects changes of progressive by regressive stages of metamorphism which define the polymetamorphic evolution of the Precambrian basement. The first regional metamorphism was in amphibolite facies (E 1) and culminated in regional migmatization. It is of general occurrence and defines the general features of the Precambrian rocks from the southern slopes of Sakar Mountain and Marica Zone.

VOLUME 21 (4)/August 1991

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
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Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria