Tectonic Implications: Zircon age of Sedimentary Rocks from Khabarovsk, Samarka, and Zhuravlevka-Amur Terranes in the Northern Sikhote-Alin Orogenic Belt

摘要

Geochronological dating was performed on the detrital zircons of 20 sedimentary rock samples from the Khabarovsk, Samarka, and Zhuravlevka-Amur terranes in the northern Sikhote-Alin Orogenic Belt to establish that (1) the isotopic Pb-206/U-238 ages of the youngest detrital zircon populations of two sedimentary rock samples from the Gorin (K(1)b) and Pioner (K(1)b-v) formations, as well as one sample from the Svetlorechensk massif (J(3)t), were significantly younger than the upper limit of the accepted stratigraphic age of these rocks and (2) sedimentary rocks accumulating in the accretionary prisms matrix of the Khabarovsk-Voronezh tectonostratigraphic zone in the Khabarovsk Terrane and turbidites in the Gorin tectonostratigraphic zone pull-apart basin of the Zhuravlevka-Amur Terrane were derived from sources located within the eastern part of the Central Asian Belt. The source of sedimentary rocks accumulating in the turbidite matrix of the accretionary prisms in the Anyui tectonostratigraphic zone of the Samarka Terrane and turbidites in the pull-apart basin of the Koppi-Luzhki tectonostratigraphic zone of the Zhuravlevka-Amur Terrane was found in the North China Craton.