Sedimentation cycles in the Neogene grabens along the Struma valley

Pages: 
pp. 61-66
Entreprise "Rare metals", v. Buhovo
Geologica Institute, Bulgarian Academy of Sciences, 1113 Sofia
Entreprise "Rare metals", v. Buhovo
Abstract: 

Three sеdimentation cycles have been differential din the Neogene grabens along the valley of the Struma river, correlated and dated after the relations between the sediments and after Mammals finds. I cycle (Middle Miocene – Vallesian) – only in Sandanshi Graben, active faults with fanglomerates –Petrovo and southern part of the West-Pirin faults. II cycle (Maeotian = Lower-Middle Turolian) – in Sandanski, Strumešnica, Simitli and Blagoevgrad Grabens, active faults with fanglomeratcs – Podgorie, Petrovo, Krupnik and West-Rila faults. Ill cycle (Pontian = Middle-Upper Turolian and probably also Lower Pliocene) – in Sandanki, Strumešnica, Oštava, Simitli and Blagoevgrad Grabens, active faults with fanglomeratcs – Podgorie, Melnik, West-Pirin and west Rila faults. After the third cycle (probably in Eopleistocne) the uplifting of the western horsts and the intensive faulting have formed block with a monoclinal dip of the Neogene beds toward the East, opposite to the facies zonality. The Podgorie, Petrovo, West-Pirin, Krupnik and West Rila faults were also reactivated.

VOLUME 18 (2)/April 1988

Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София
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Геологический институт Болгарской академии наук, 1113 София

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

Entreprise "Rare metals", v. Buhovo
|
Geologica Institute, Bulgarian Academy of Sciences, 1113 Sofia
|
Entreprise "Rare metals", v. Buhovo