Late Cretaceous granitoids of the Sikhote-Alin orogenic belt, southeastern Russia: implications for the Mesozoic geodynamic history of the eastern Asian continental margin

Kemkin, Igor, V1; Grebennikov, Andrei, V1; Ma, Xing-Hua2,3; Sun, Ke-Ke4

2022-07-01

10.1144/jgs2021-109

JOURNAL OF THE GEOLOGICAL SOCIETY   Impact Factor & Quartile

0016-7649

2041-479X

We present new U-Pb age data for granitoids in the Central Sikhote-Alin orogenic belt in SE Russia, which refute the established opinion about the absence of the Late Cretaceous magmatism at the eastern margin of the Palaeo-Asian continent. It was previously thought that a period of magmatic quiescence occurred from 88 to 50 Ma, related to subduction of the Palaeo-Pacific plate under the eastern margin of the Palaeo-Asian continent, although this is inconsistent with evidence from the Sikhote-Alin, Sakhalin and Japan regions. Three suites of plutonic rocks with different ages were identified in this study. The first suite has ages of 105-92 Ma and formed in a syn-orogenic setting. The second (86-83 Ma) and third (c. 73 Ma) suites formed during the post-orogenic stage of the Sikhote-Alin orogenic belt. The second and third suites were coeval with Late Cretaceous granitoids that formed in a supra-subduction continental arc known as the Eastern Sikhote-Alin volcanic- plutonic belt. However, the studied rocks are located far inland from the Eastern Sikhote-Alin volcanic-plutonic belt. The ages of the studied granitoids coincide with the timing of a change in the angle of convergence between the Palaeo-Pacific plate and eastern margin of the Palaeo-Asian continent. This change in motion of the oceanic plate with respect to the continental plate was probably caused by a rupture in the subducted slab (i.e. a slab tear), followed by asthenospheric upwelling and partial melting of the overlying crust, which ultimately generated post-orogenic intrusive magmatism.

SCI ; EI

English

Others

Russian Foundation for Basic Research (RFBR)[19-55-53008] ; National Natural Science Foundation of China["41911530106","42173053","41572054"] ; Fundamental Research Funds for the Central Public Welfare Research Institutes["KK1914","KK2013"] ; Open Research Project from the State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences[GPMR201816] ; National Key RD Plan["2018YFC0603801","2019YFC0605202"] ; Key Laboratory of Regional Geology and Mineralization, Hebei GEO University[HGU-RGMKF192]

Geology

Geosciences, Multidisciplinary

WOS:000850723600011

GEOLOGICAL SOC PUBL HOUSE

20223812765282

Geodynamics ; Volcanic rocks

Geophysics:481.3 ; Minerals:482.2 ; Seismology:484

GEOSCIENCES

Web of Science

1.Russian Acad Sci, Far East Geol Inst, Far Eastern Branch, Pr 100 Letiya Vladivostok 159, Vladivostok 690022, Russia
2.Chinese Acad Geol Sci, Inst Mineral Resources, MNR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
4.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China

Kemkin, Igor, V,Grebennikov, Andrei, V,Ma, Xing-Hua,et al. Late Cretaceous granitoids of the Sikhote-Alin orogenic belt, southeastern Russia: implications for the Mesozoic geodynamic history of the eastern Asian continental margin[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2022,179(4).

Kemkin, Igor, V,Grebennikov, Andrei, V,Ma, Xing-Hua,&Sun, Ke-Ke.(2022).Late Cretaceous granitoids of the Sikhote-Alin orogenic belt, southeastern Russia: implications for the Mesozoic geodynamic history of the eastern Asian continental margin.JOURNAL OF THE GEOLOGICAL SOCIETY,179(4).

Kemkin, Igor, V,et al."Late Cretaceous granitoids of the Sikhote-Alin orogenic belt, southeastern Russia: implications for the Mesozoic geodynamic history of the eastern Asian continental margin".JOURNAL OF THE GEOLOGICAL SOCIETY 179.4(2022).