Transactions of KarRC RAS :: Scientific publications

Е.Х. Кориш, К.А. Савко, Е.Б. Сальникова, А.В. Самсонов, А.А. Иванова, А.Н. Ларионов, С.В. Цыбуляев.

Палеопротерозойский диорит- гранодиоритовый магматизм Курского блока Сарматии: расшифровка сближенных во времени геологических событий

// Труды КарНЦ РАН. No 5. Сер. Геология Докембрия. 2022. C. 60-63

E.Kh. Korish, K.A. Savko, E.B. Sal’nikova, A.V. Samsonov, A.A. Ivanova, A.N. Larionov, S.V. Tsybulyaev. Paleoproterozoic diorite-granodiorite magmatism of the Kursk block of sarmatia: deciphering time-adjacent geological events // Transactions of Karelian Research Centre of Russian Academy of Science. No 5. Precambrian Geology Series. 2022. Pp. 60-63

Keywords: Sarmatia; Kursk block; Paleoproterozoic; magmatism

In the Kursk block of Sarmatia, in the interval of 2.1-2.04 Ga, an active reworking of the continental lithosphere took place: (1) subduction with the slab break-off (2.14-2.10 Ga), (2) collision of the volcanic arc - the continent (≈2.09 Ga), (3) postcollision extension and suprasubduction magmatism (2.08-2.07 Ga), (4) continent–continent collision (≈2.07 Ga), (5) post-collision magmatism (2.07-2.04 Ga). The SIMS zircon age values from 2.08 to 2.05 Ga for granodiorite magmatism indicated a postcollision extension. The zircon and titanite TIMS dating showed that their intrusion occurred at 2.08-2.07 Ga before the collision of Sarmatia and Volgouralia in a suprasubduction setting.

URL: http://journals.krc.karelia.ru/index.php/precambrian/article/view/1655

DOI: 10.17076/geo1655

Indexed at RSCI