Abstract
On the basis of petrological study and reference isotopic geochronological age determinations of Precambrian rocks of the Ukrainian shield (USh), published lately, a refined geochronological scale of stages of deformation (faulting) of the Earth's crust in this region has been made up. It is shown that the suture zones of the USh - Golovanevsk, Ingulets-Krivoy Rog and Orekhov-Pavlograd - were simultaneously formed in the Early Proterozoic. These data allowed us to clarify the scheme and the mechanism of geodynamic evolution of the central and eastern parts of the shield in the Early Precambrian. Plate tectonic mechanism of formation of the lithosphere structure of this part of the USh was provided with the action of two convection cells (or plumes) - regional and pulsating local ones.
Highlights
Scheme of periodization of faulting stages in the Earths crust of the Ukrainian shield new data and sequences
It is shown that the suture zones of the Ukrainian shield (USh) Golovanevsk, Ingulets-Krivoy Rog and Orekhov-Pavlograd were simultaneously formed in the Early Proterozoic
Plate tectonic mechanism of formation of the lithosphere structure of this part of the USh was provided with the action of two convection cells regional and pulsating local ones
Summary
Scheme of periodization of faulting stages in the Earths crust of the Ukrainian shield new data and sequences. Ïîñëåäîâàòåëüíîñòü è âîçðàñò ýòàïîâ ðàçëîìîîáðàçîâàíèÿ, ó÷èòûâàÿ, ÷òî çîíû ðàçëîìîâ Óêðàèíñêîãî ùèòà (ÓÙ) ÿâëÿþòñÿ â øèðîêîì ñìûñëå çîíàìè ñäâèãà , èãðàþò âàæíóþ ðîëü ïðè èçó÷åíèè ãåîäèíàìè÷åñêèõ ïðîöåññîâ â äîêåìáðèè.  Èíãóëåöêî-Êðèâîðîæñêîé øîâíîé çîíå âñÿ åå âîñòî÷íàÿ ÷àñòü, êðîìå Êðèâîðîæñêî-Êðåìåí÷óãñêîé ñòðóêòóðíî-ôàöèàëüíîé çîíû , â îñíîâíîì àðõåéñêàÿ (òàê íàçûâàåìûé Èíãóëåöêèé âàë ãðàíèòîèäû äíåïðîïåòðîâñêîãî è èíãóëåöêîãî êîìïëåêñîâ âîçðàñòîì îêîëî 2,83,0 ìëðä ëåò ñ îñòàíöàìè ïîðîä êîíêñêîé ñåðèè).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.