Zircon U–Pb ages of the metamorphic supracrustal rocks of the Xinghuadukou Group and granitic complexes in the Argun massif of the northern Great Hinggan Range, NE China, and their tectonic implications

Tectonic implications of new zircon U–Pb ages for the Xinghuadukou Complex, Erguna Massif, northern Great Xing’an Range, NE China

“…The granitoids in the Erguna Massif were previously thought to comprise Paleozoic intrusions in the eastern part of the massif and Proterozoic-Paleozoic intrusions in the west (IMBGMR, 1991;HBGMR, 1993); however, recent geochronological data Li et al, 2004;Ge et al, 2005;Qin et al, 2007;Wu et al, 2011;Tang et al, 2013) indicate that this area underwent multiple stages of granitic magmatism, with the majority of intrusions emplaced during the Cretaceous (132-118 Ma), Jurassic to Triassic (220-182 Ma) and early Paleozoic , with lesser magmatism during the late Paleozoic (336-224 Ma) and Neoproterozoic (927-737 Ma; Wu et al, 2011). In addition, the massif locally contains Precambrian metamorphic rocks (Miao et al, 2004(Miao et al, , 2007Ge et al, 2005;Wu et al, 2005Wu et al, , 2012.…”

“…We present new data for this complex that further our understanding of the Precambrian evolution of NE China. The nature and age of the Xinghuadukou Complex remain debated, with previous research suggesting these units represent a Paleoproterozoic to Mesoproterozoic complex or supracrustal sequence (HBGMR, 1993;Biao et al, 1999;Sun et al, 2002), or may have formed during the Neoproterozoic (Guo et al, 2005;Wu et al, 2012) or the early Paleozoic (Miao et al, 2007). Here, we present new zircon U-Pb ages for basement rocks of the Xinghuadukou Complex, a constituent part of the Erguna Massif.…”

Geochronology, geochemistry, and Sr–Nd–Hf isotopes of the early Paleozoic igneous rocks in the Duobaoshan area, NE China, and their geological significance

“…The Argun and Jiamusi blocks (also including the Tuva-Mongolia and Central Mongolia massifs) had accreted to the south margin of the Siberian Craton at least $500 Ma ago (Salnikova et al, 1998(Salnikova et al, , 2001Wilde et al, 2000Wilde et al, , 2003Sorokin et al, 2002Sorokin et al, , 2004aSorokin et al, , 2004bWu et al, 2005Wu et al, , 2012. Ge et al (2005Ge et al ( , 2007b obtained emplacement ages of 460-500 Ma for a granodiorie-monzogranite-syenogranite association, which occurs in the Tahe area located at the eastern segment of the Argun massif; Sui et al (2006) reported crystallization ages of 461-499 Ma for the Halabaqi intrusion comprised granodiorie, monzogranite, and syenogranite in the Tahe area of the Argun massif.…”

Fluid inclusions and isotopic characteristics of the Jiawula Pb–Zn–Ag deposit, Inner Mongolia, China

“…1a). This orogenic belt experienced a complicated tectonic evolution involving at least six major geological events since the Neoproterozoic: (1) Middle−late Neoproterozoic to Early Cambrian, development of a geosyncline and deposition of marine basalt, andesite, dacite, mudstone, siltstone, and carbonate of the Xinghuadukou Group, marine sandstone, siltstone, carbonate, dacite, and rhyolite of the Jiageda Formation, and marine carbonate, sandstone, siltstone, and mudstone of the Argunhe Formation (Wu et al, 2012); (2) Late Neoproterozoic to early Palaeozoic Khanka orogeny resulted in amalgamation of the Argun block and the Vitim−Stanovoy block, which was located at the southwestern edge of the Siberian Craton, forming the Argun orogenic belt (Ge et al, 2005;Wu et al, 2005;; (3) Early Paleozoic amalgamation of the above units with the Central Mongolia block to the southwest along the Kelulun fault (Sorokin et al, 2004). Subsequently, the Argun area evolved into a post-collisional setting during Late Jurassic−Early Cretaceous, characterized by a large number of intermediate−acidic volcanic rocks with minor granitic intrusions, leading to the large-scale Pb−Zn−Ag mineralization of the Argun metallogenic belt .…”