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GREENSTONE STRUCTURES OF THE ORIKHOVO-PAVLOGRAD ZONE: FIRST EXPERIENCE OF THE GEOLOGICAL DESCRIPTION. ARTICLE 2. CHYSTOPILLYA STRUCTURE

UDC 551.71 (477) 
https://doi.org/10.15407/mineraljournal.38.01.032

A.B. Bobrov

PEI "Tutkovsky Institute"

28, Dubrovytska Str., Kyiv, Ukraine, 04114

E-mail: albobrov@ukr.net

GREENSTONE STRUCTURES OF THE ORIKHOVO-PAVLOGRAD ZONE: FIRST EXPERIENCE OF THE GEOLOGICAL DESCRIPTION. ARTICLE 2. CHYSTOPILLYA STRUCTURE

Language: Ukrainian

Mineralogical Journal 2016, 38 (1): 32-41

Abstract: Structural and tectonic position, the ordering of the internal structure and rocks composition of the Chystopillya structure have been first described in the article. This is one of the two greenstone structures, which were first described by us in 1989—1990. The structure is discovered within the area of the Orikhovo-Pavlograd deep fault zone among totally different types of the strongly metamorphosed associations of basement rocks. Cross-section of the drill-holes profile (No 300, 301) across the structure (according to the obtained data) has a three-part internal structure. The lower part is represented by significantly lower metabazalt association (KT-1) of the metakomatiitic-tholeiitic formation (a complete structural, composition and age analogues of the rocks of Sura suite, Mesoarchean Konka series). The middle part of the section is presented by significantly lower ultrabasitic parageneration KT-2, and the top part — by andesite-bazaltic parageneration KT-3, which are distinguished by the increased role of the welded tuff facies. Cross-section correlation of the Novohorivka, Chystopillya and other typical structures of Azov megablock (Kosyvtseve and Sorokyne) which status is undisputed has shown complete resemblance of cross-section rocks filling, structural and textural features of the rocks, the ordering of the same type of internal structure, its relative stratigraphic position.

Keywords: Orikhovo-Pavlograd deep fault zone, greenstone structure, metakomatiitic-tholeiitic formation, Sura suite, cross-section correlation.

References

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English