TY - JOUR

T1 - The Khanka Massif: The Heterogeneity of its Basement and Regional Correlations

AU - Khanchuk, A. I.

AU - Alenicheva, A. A.

AU - Golozubov, V. V.

AU - Kandaurov, A. T.

AU - Yurchenko, Y. Y.

AU - Sergeev, S. A.

N1 - Funding Information: Results of geochronological study were obtained in the framework of the government-financed program of VSEGEI (no. AL-02–06/35) and the government-financed programs of the Federal Agency on Nature Management on December 26, 2019 (no. 049-00017-20-04) and on January 14, 2021 (no. 049-00016-21-00). Collection and processing of information were financially supported by the Russian Science Foundation (project no. 21-77-20022), while edition of the paper was supported by the Russian Foundation for Basic Research (project no. 19-05-00229). Funding Information: We are grateful to N.N. Kruk and corresponding member of the RAS A.A. Sorokin for critical comments, which significantly improved the manuscript. O. I. Kenya is thanked for help with graphical works. Publisher Copyright: © 2022, Pleiades Publishing, Ltd.

PY - 2022/8

Y1 - 2022/8

N2 - This paper reports new geochronological data on metagranitoids (U–Pb SIMS) and ophiolites (Sm–Nd) from the Khanka massif. New and published data define the Early Neoproterozoic Matveevka–Nakhimovka terrane with 935- and 915-Ma early suprasubduction magmatism, 850–880-Ma and 757-Ma withinplate and Pacific-type transform margin magmatism, as well as the Late Neoproterozoic–Early Cambrian Dvoryan and Tafuin terranes with 543, 520, 517, and 513-Ma suprasubduction magmatism. These two terranes are separated by a suture (Voznesenka and Spassk terranes) formed by Ediacaran–Cambrian shelf deposits and a Cambrian accretionary wedge with ophiolites older than 514 Ma. The greater part of the Khanka massif formed in the late Cambrian, with the Kordonka island-arc terrane accreted at the end of the Silurian. The Sergeevka terrane of the Ordovician island arc joined it through the Early Cretaceous strike-slip movements. Heterogeneous structures of the main part of the Khanka massif can be traced to the north based on the analogous stages of magmatism and metamorphism, where the Jiamusi massif (including the East Bureya terrane) is an Early Neoproterozoic block and the eastern Songnen massif (including the West Bureya terrane) is a Late Neoproterozoic–Cambrian block. These blocks are separated by the Spassk–Wuxingzhen–Melgin suture formed by their collision in the Late Cambrian. The Bureya–Songnen–Jiamusi–Khanka superterrane formed as a part of the Gondwana supercontinent approximately 500 Ma ago through orogeny and accretion of the Rodinia supercontinent fragments.

AB - This paper reports new geochronological data on metagranitoids (U–Pb SIMS) and ophiolites (Sm–Nd) from the Khanka massif. New and published data define the Early Neoproterozoic Matveevka–Nakhimovka terrane with 935- and 915-Ma early suprasubduction magmatism, 850–880-Ma and 757-Ma withinplate and Pacific-type transform margin magmatism, as well as the Late Neoproterozoic–Early Cambrian Dvoryan and Tafuin terranes with 543, 520, 517, and 513-Ma suprasubduction magmatism. These two terranes are separated by a suture (Voznesenka and Spassk terranes) formed by Ediacaran–Cambrian shelf deposits and a Cambrian accretionary wedge with ophiolites older than 514 Ma. The greater part of the Khanka massif formed in the late Cambrian, with the Kordonka island-arc terrane accreted at the end of the Silurian. The Sergeevka terrane of the Ordovician island arc joined it through the Early Cretaceous strike-slip movements. Heterogeneous structures of the main part of the Khanka massif can be traced to the north based on the analogous stages of magmatism and metamorphism, where the Jiamusi massif (including the East Bureya terrane) is an Early Neoproterozoic block and the eastern Songnen massif (including the West Bureya terrane) is a Late Neoproterozoic–Cambrian block. These blocks are separated by the Spassk–Wuxingzhen–Melgin suture formed by their collision in the Late Cambrian. The Bureya–Songnen–Jiamusi–Khanka superterrane formed as a part of the Gondwana supercontinent approximately 500 Ma ago through orogeny and accretion of the Rodinia supercontinent fragments.

KW - Bureya–Songnen–Jiamusi–Khanka superterrane

KW - Cambrian

KW - geochronology

KW - granites

KW - Khanka massif

KW - Neoproterozoic

KW - ophiolites

UR - http://www.scopus.com/inward/record.url?scp=85135932868&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/8c0366df-a1bd-3174-bb06-cb3d927579ab/

U2 - 10.1134/S1819714022040042

DO - 10.1134/S1819714022040042

M3 - Article

AN - SCOPUS:85135932868

VL - 16

SP - 281

EP - 299

JO - Russian Journal of Pacific Geology

JF - Russian Journal of Pacific Geology

SN - 1819-7140

IS - 4

ER -