Zircon SHRIMP U–Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing’an ranges, NE China: Timing of formation and metamorphism and tectonic implications

Miao, Laicheng; Zhang, Fuqin; Zhu, Mingshuai; Liu, Dunyi

doi:10.1016/j.jseaes.2014.09.035

Cited by 45 publications

(18 citation statements)

References 52 publications

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“…The relatively young Nd depleted‐mantle model ages (T DM = 0.72–0.91 Ga) also support this conclusion. At the same time, the Sr‐Nd isotope compositions and the T DM ages illustrate that no ancient continental lithosphere under the CAOB, consistent with conclusion of no large‐scale Precambrian basement within eastern CAOB (Miao et al, ; Miao, Zhang, Baatar, Zhu, & Anaad, ; Miao, Zhang, Zhu, & Liu, ). The high K/Rb ratios (165–883) of the mafic rocks imply that amphibole is the dominant hydrous mineral in the mantle source.…”

Section: Discussionsupporting

confidence: 73%

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

et al. 2018

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This paper presents new geochemical and geochronological data of the Late Mesozoic volcanic rocks in East Mongolia. These volcanic rocks belong to high‐K calc‐alkaline and shoshonitic series and exhibit features of bimodal rocks. The mafic rocks have elevated incompatible trace element concentrations and significantly negative Nb, Ta, and Ti anomalies, with 87Sr/86Sr(i) and ƐNd(t) values of 0.70502–0.70572 and −1.72459 to +1.720736, respectively, which suggest that the mafic magma was derived from a lithospheric mantle source that might have been metasomatized by subduction‐derived fluids, experienced fractional crystallization, and was contaminated by crustal materials. The felsic rocks have similar rare earth element patterns to the mafic rocks but show much more significantly negative Eu and Sr anomalies. The felsic rocks have higher 87Sr/86Sr(i) values of 0.706496–0.71104 than the mafic rocks but similar ƐNd(t) values (−0.28003 to +2.928506) to the mafic ones. These data indicate that the felsic rocks originated from partial melting of a crustal source that is dominated by juvenile mafic rocks. Our new K‐Ar dating, together with previous data, shows that the Late Mesozoic volcanism in East Mongolia took place during the Late Jurassic‐Early Cretaceous between ca. 155 and 99 Ma. The model of back‐arc extension, possibly induced by slab rollback of the westward subducted Pacific Plate and the subduction zone retreat, can explain the geodynamic setting and the eastward younging trend of the Late Mesozoic volcanism in East Mongolia and in adjacent NE China.

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Section: Discussionsupporting

confidence: 73%

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

et al. 2018

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“…In the BJKB, the Pan‐African metamorphic and igneous rocks range in age from 540 to 480 Ma with a peak of ~500 Ma (Wilde et al, ; Zhou et al, ). In the middle Paleozoic, only a few inherited zircons with 390–290 Ma ages are reported in the granitic rocks along the western BJKB (Miao et al, ). A magmatic arc belt (290–274 Ma in age) was generated along the eastern margin of the Jiamusi Block (Bi et al, ; Meng et al, ; Sun, Xu, Wilde, Chen, et al, ; Yu et al, ), whereas there are 270–244 Ma I‐type granodiorites and 220–170 Ma highly fractionated I‐type granitoids in the western BJKB and adjacent areas (Jahn et al, ; Liu et al, ; Wu et al, , , ; Xu et al, ; Yang et al, b).…”

Section: Discussionmentioning

confidence: 99%

U‐Pb Dating and Lu‐Hf Isotopes of Detrital Zircons From the Southern Sikhote‐Alin Orogenic Belt, Russian Far East: Tectonic Implications for the Early Cretaceous Evolution of the Northwest Pacific Margin

Zhang

Wilde

et al. 2017

Tectonics

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The Sikhote‐Alin orogenic belt in Russian Far East is comprised of several N‐S trending belts, including the Late Jurassic to Early Cretaceous accretionary prisms and turbidite basin which are now separated by thrusts and strike‐slip faults. The origin and collage of the belts have been studied for decades. However, the provenance of the belts remains unclear. Six sandstone samples were collected along a 200 km long east‐west traverse across the major belts in the southern Sikhote‐Alin for U‐Pb dating and Lu‐Hf isotope analysis to constrain the provenance and evaluate the evolution of the northwest Pacific margin at this time. The result reveals that the sediments from the main Samarka belt was mainly from the adjacent Bureya‐Jiamusi‐Khanka Block (BJKB); the eastern Samarka belt and the Zhuravlevka turbidite basin were supplied by detritus from both the North China Craton (NCC) and the BJKB; the Taukha belt was mainly fed by sediments from the NCC; whereas the data from the Sergeevka nappes are insufficient to resolve their provenance. In the Late Jurassic to Early Cretaceous, collision and subduction was important in the initial collage of most belts in Sikhote‐Alin. However, merely E‐W trending collage cannot explain the increasing importance of the NCC provenance from west to east. It is proposed that the main Samarka belt was located adjacent to the BJKB when deposited, whereas the other belts were farther south to accept the materials from the NCC. Sinistral strike‐slip faulting transported the eastern belts northward after their initial collage by thrusting.

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“…But more and more studies show that the Xing'an Block consists mainly of Phanerozoic igneous and sedimentary rocks (Wu et al, ). The recently dated Precambrian basement rocks should be a part of the Erguna Block according to new studies (Cui et al, ; Feng, Liu, Li, et al, ; Miao, Zhang, Zhu, & Liu, ; W. Sun et al, ).…”

Section: Tectonic Blocks and Geological Unitsmentioning

confidence: 99%

Early Carboniferous tectonic evolution of the northern Heihe–Nenjiang–Hegenshan suture zone, NE China: Constraints from the mylonitized Nenjiang rhyolites and the Moguqi gabbros

Feng

Liu

et al. 2017

Geological Journal

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The Heihe–Nenjiang–Hegenshan suture zone has long been accepted as the major tectonic boundary between the Xing'an and Songliao blocks and extends through the Great Xing'an Range in NE China, but its location of the northern segment between the Moguqi and Nenjiang areas and its timing remain unclear. We address these issues by presenting zircon LA‐ICP‐MS U–Pb ages, Lu‐Hf isotopes, bulk‐rock major, and trace elemental data for mylonitized rhyolites collected from the Moergenhe Formation in the Nenjiang area and for gabbros of the Moguqi area, respectively. The mylonitized rhyolites, which display an arc‐related geochemical affinity with enrichment in Th and U, and depletion of Nb, Ta, and Ti, and gently right‐tilted rare earth element (REE) patterns (light REE [LREE]/heavy REE [HREE] =4.53–7.60), as well as the εHf (t) values (+6.4 to +11.8) of analyzed zircons, indicate an origin by partial melting of potentially young lower continental crust of a subducting slab. The zircon LA‐ICP‐MS U–Pb data show the formation age of the mylonitized rhyolites is 352.4 Ma. The analyzed gabbros with an emplacement age of 352.6 Ma have high concentrations of Th and U, slightly enriched LREE patterns and relative low LREE/HREE ratios (4.3 to 4.6). These features, together with their high positive εHf (t) values (+7.7 to +15.2), suggest that they were likely derived from the partial melting of a depleted mantle source that was metasomatized by subduction‐related fluids. Combined with the geochemical features of the coeval igneous rocks from the northern Great Xing'an Range, these results reveal that the existence of an early Carboniferous NE‐trending magmatic arc (ca. 350–330 Ma), extending along the west of the Heihe–Nenjiang–Hegenshan suture zone, gives more constraints on the amalgamation of the Xing'an and Songliao blocks along the Nenjiang–Moguqi areas and indicates that the amalgamation should have terminated by at least the end of the early Carboniferous.

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Zircon SHRIMP U–Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing’an ranges, NE China: Timing of formation and metamorphism and tectonic implications

Cited by 45 publications

References 52 publications

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

Petrogenesis and tectonic implication of the Late Mesozoic volcanic rocks in East Mongolia

U‐Pb Dating and Lu‐Hf Isotopes of Detrital Zircons From the Southern Sikhote‐Alin Orogenic Belt, Russian Far East: Tectonic Implications for the Early Cretaceous Evolution of the Northwest Pacific Margin

Early Carboniferous tectonic evolution of the northern Heihe–Nenjiang–Hegenshan suture zone, NE China: Constraints from the mylonitized Nenjiang rhyolites and the Moguqi gabbros

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