TY - JOUR

T1 - Connection between tectonothermal events of the Yakutian kimberlite province and assembly of the Siberian craton

AU - Shatsky, Vladislav S.

AU - Wang, Qin

AU - Ragozin, Alexey L.

AU - Su, Wenhao

AU - Ilyin, Andrei A.

N1 - Geochemical, petrographic and mineralogical studies of xenolith’s, as well as CL imagery of zircon and Raman studies of inclusions were supported by the Russian Science Foundation (project 22-27-00195). Geochemical (LA-ICP-MS), geochronological, Hf-isotopic studies of zircon were supported by the Natural Science Foundation of China (41825006). Samples for research were collected during field work as part of the state assignment of the Institute of Geology and Mineralogy SB RAS (122041400159-3). We are grateful to Dr. T.V. Donskaya and Prof. K. Condie for constructive reviews an early version that helped to significantly improve the manuscript.

PY - 2024/6

Y1 - 2024/6

N2 - The tectonic framework of the Siberian craton is still under debate. It is generally assumed that the Markha and Daldyn terranes collided at 2.2–2.1 Ga and the final assembly of the Siberian craton occurred at 1.9–1.8 Ga. However, previous study on zircons from xenoliths of the Zapolyarnaya pipe, which is located in the Upper Muna kimberlite field and close to the boundary between the Markha and Daldyn terranes, do not show tectonothermal evidence younger than 2.7 Ga. To clarify the tectonothermal evolution of the Siberian craton, we present U-Pb ages and Hf isotope data of zircons from crustal xenoliths in the Novinka and Komsomolskaya Magnitnaya kimberlite pipes in the Upper Muna field. The zircon ages confirm only one major tectonothermal event at 2.7 Ga in the Upper Muna field, which doubts the existence of the collision zone between the Markha and Daldyn terranes. The middle-lower crust beneath the Upper Muna field is mainly composed of mafic and intermediate granulites and experienced long-term cooling. The negative values of εHf(2.7) suggests ignorable addition of juvenile component during partial melting of the Paleoarchean crust at 2.7 Ga. Compared with crustal xenoliths from other kimberlite pipes in the Yakutian diamondiferous province, the crust of the Anabar province shows vertical and lateral heterogeneity and the absence of a relationship between the crustal reworking degree and the main collision zones. We propose that the widespread 2.7 and 1.9 Ga tectonothermal events in the Anabar tectonic province were associated with the episodic rise of superplumes, which not only caused the crustal growth and reworking but also facilitated collision and amalgamation of terranes.

AB - The tectonic framework of the Siberian craton is still under debate. It is generally assumed that the Markha and Daldyn terranes collided at 2.2–2.1 Ga and the final assembly of the Siberian craton occurred at 1.9–1.8 Ga. However, previous study on zircons from xenoliths of the Zapolyarnaya pipe, which is located in the Upper Muna kimberlite field and close to the boundary between the Markha and Daldyn terranes, do not show tectonothermal evidence younger than 2.7 Ga. To clarify the tectonothermal evolution of the Siberian craton, we present U-Pb ages and Hf isotope data of zircons from crustal xenoliths in the Novinka and Komsomolskaya Magnitnaya kimberlite pipes in the Upper Muna field. The zircon ages confirm only one major tectonothermal event at 2.7 Ga in the Upper Muna field, which doubts the existence of the collision zone between the Markha and Daldyn terranes. The middle-lower crust beneath the Upper Muna field is mainly composed of mafic and intermediate granulites and experienced long-term cooling. The negative values of εHf(2.7) suggests ignorable addition of juvenile component during partial melting of the Paleoarchean crust at 2.7 Ga. Compared with crustal xenoliths from other kimberlite pipes in the Yakutian diamondiferous province, the crust of the Anabar province shows vertical and lateral heterogeneity and the absence of a relationship between the crustal reworking degree and the main collision zones. We propose that the widespread 2.7 and 1.9 Ga tectonothermal events in the Anabar tectonic province were associated with the episodic rise of superplumes, which not only caused the crustal growth and reworking but also facilitated collision and amalgamation of terranes.

KW - Continental growth

KW - Crustal reworking

KW - Granulites

KW - Siberian craton

KW - Tectonothermal events

KW - Zircon geochronology

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85189174571&origin=inward&txGid=b8eefcf64cf35c95cbbcfb1bf044e256

UR - https://www.mendeley.com/catalogue/098a0748-1dbe-38ac-ae29-15f38172654e/

U2 - 10.1016/j.precamres.2024.107379

DO - 10.1016/j.precamres.2024.107379

M3 - Article

VL - 405

JO - Precambrian Research

JF - Precambrian Research

SN - 0301-9268

M1 - 107379

ER -