Early Paleozoic arc magmatism in the Kalamaili orogenic belt, Northern Xinjiang, NW China: Implications for the tectonic evolution of the East Junggar terrane

Xu, Qiang; Zhao, Lei; Niu, Baogui; Zheng, Rongguo; Yang, Yaqi; Liu, Jianhua

doi:10.1016/j.jseaes.2019.104072

Cited by 27 publications

(7 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…503 Ma, subduction initiation occurred in the Kelameili Ocean probably in response to docking of the western Tuva‐Mongolian microcontinent with the Siberia craton (Turkina et al, 2007; Wilhem et al, 2012), seafloor spreading accompanied which produced the Zhaheba‐Aermantai SSZ ophiolite (Luo et al, 2017; Xiao et al, 2009); (b) soon after subduction initiation (ca. 500 Ma), sustained subduction was in progress, producing an incipient arc on the Zhaheba‐Aermantai ophiolite as the result of intrusion of hydrous basaltic magmas; (c) continuous subduction toward the north (present coordinate) in the Ordovician and Silurian produced the East Junggar arc system with the development of the Kelameili accretionary complex in the fore‐arc part, on which extensive arc‐related magmatism developed (An et al, 2021; Huang et al, 2016a, 2016b; Long et al, 2012; Luo et al, 2017; Xu et al, 2020); (d) as the age of the subducting Kelameili oceanic lithosphere became older, rollback of it occurred and caused southward migration of the arc magmatism, resulting in the formation of a growing arc, meanwhile, stimulating the Tuva‐Mongolian microcontinent and the Siberia craton to rotate clockwise (Cocks & Torsvik, 2007; Xiao et al, 2018); (e) development of the growing arc continued into the latest Carboniferous, further provided the driving force for the Tuva‐Mongolian microcontinent and the Siberia craton to rotate clockwise (Xiao et al, 2015, 2018); (f) northward subduction of the Kelameili oceanic lithosphere was still in progress in the latest Permian, when the Kelameili Ocean was a relic ocean like the present‐day Mediterranean Sea…”

Section: Discussionmentioning

confidence: 99%

“…The Yemaquan arc comprises minor Ordovician and Silurian meta‐volcanic and meta‐sedimentary rocks, but dominantly Devonian to Carboniferous volcanic and sedimentary rocks (An, Zhao, Liu, & Han, 2021; BGMRX, 1993; Long et al, 2012; Xu et al, 2013), their geochemical characteristics indicate subduction in origin of them (An et al, 2021; Xu et al, 2013). And a large number of granitic plutons intruded during the Silurian to Carboniferous (Huang, Niu, Wang, Guo, & Yu, 2016a, 2016b; Xu et al, 2013; Xu et al, 2020).…”

Section: Regional Geology and Tectonic Backgroundmentioning

confidence: 99%

“…However, the birth of the Kelameili Ocean is controversial, and some scholars proposed that existence of the Kelameili Ocean can be traced to the late Neoproterozoic (He, Li, Jia, & Zhou, 2001; Luo et al, 2017; Xiao et al, 2009). However, based on the ages of ophiolitic ingredients, some others postulated that the Kelameili Ocean opened in the Devonian (Xu et al, 2015; Zhang et al, 2021) or the early Palaeozoic (Xu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, there are different opinions about the timing of subduction initiation, which postdates the existence of the Kelameili Ocean (Long et al, 2012; Luo et al, 2017; Xiao et al, 2009; Xu et al, 2015, 2020). Based on new field mapping, geochemical, and geochronological data, Luo et al (2017) combined the Zhaheba‐Aermantai and the Kelameili ophiolite belts together, and proposed that the Zhaheba‐Aermantai ophiolite formed during subduction initiation at ca.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Defining the Huangcaopo complex and gabbroic magmatism in the northern Harlik Mountains (NW China): Late Cambrian to latest Permian accretionary growth of the East Junggar Arc?

Xiao

Windley

et al. 2021

Geological Journal

View full text Add to dashboard Cite

The Kelameili Ocean was one branch of the Palaeo‐Asian Ocean, the initiation and closure history of which remains elusive. Consequently, they hamper our understanding of the accretionary evolution of the southern Altaids. In this paper, we carried out field mapping and also geochronological and geochemical analyses on the Huangcaopo Group in the northern Harlik Mountains, NW China. Field investigation revealed that “block‐in‐matrix” structure develops with blocks of andesite, limestone, sandstone, and gabbro in matrices of turbidites. Combined with our recent work, our field investigation indicates that the Huangcaopo Group is the southern extension of the Kelameili accretionary complex. A gabbro block (19HAM057) was dated at 500 ± 4 Ma, its geochemical affinity was defined to be similar to arc magmatic rocks. Magmatisms represented by two gabbroic intrusions (19HAM057‐2 and 19HAM048) were dated at the latest Devonian (360 ± 5 Ma) and the latest Carboniferous (299 ± 4 Ma), respectively. Their geochemistry displays enrichments in light rare earth elements (LREE) and large ion lithophile elements (LILE), but depletions in high field strength elements (HFSE, especially Nb and Ta). And a younger gabbroic intrusion (19HAM052) yielded crystallization age of the latest Permian (254 ± 3 Ma), and its geochemistry also shows affinity to arc magmatism. The magmatism represented by the gabbro block (19HAM057) was coeval with the Zhaheba‐Aermantai ophiolite, indicating that it was the product of incipient arc magmatism following subduction initiation in the Kelameili branch of the Palaeo‐Asian Ocean. However, two episodes of gabbroic magmas (19HAM057‐2 and 19HAM048) that intruded the Kelameili accretionary complex from the latest Devonian to latest Carboniferous indicate southward rollback of the subducting Kelameili oceanic lithosphere and resulted in the development of a growing arc. Meanwhile, the youngest gabbroic intrusion (19HAM052) suggests that northward subduction of the Kelameili oceanic lithosphere may have at least lasted to the latest Permian, indicating that the closure of the Kelameili Ocean might have been later than the latest Permian, most likely in the early Triassic. Our new data provide further constraints on the initiation and closure history of the Kelameili Ocean, which shed light on the accretionary evolution of the Altaids.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Regional Geology and Tectonic Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Defining the Huangcaopo complex and gabbroic magmatism in the northern Harlik Mountains (NW China): Late Cambrian to latest Permian accretionary growth of the East Junggar Arc?

Xiao

Windley

et al. 2021

Geological Journal

View full text Add to dashboard Cite

show abstract

“…(a) Sketch geological map showing the location of Central Asian Orogenic Belt (modified from Huang, Zhang, Santosh, Zhang, & Wang, 2015). (b) Tectonic units of Northern Xinjiang, NW China (modified from Xu et al, 2019). 1, Erqis ophiolite belt; 2, Hongguleleng–Aermantai–Zhaheba ophiolite belt; 3, Kalamaili ophiolite belt; 4, Irtysh Fault; 5, Kalamaili Fault.…”

Section: Introductionmentioning

confidence: 99%

Petrogenesis of an Early Permian bimodal intermediate‐felsic suite in the East Junggar in Central Asian Orogenic Belt and tectonic implications

Zhang

Santosh

et al. 2020

Geological Journal

View full text Add to dashboard Cite

The bimodal intermediate‐felsic suites are rare, and their petrogenesis remains unsolved. Here, we report a bimodal intermediate‐felsic magmatic suite from East Junggar (NW China) composed of rhyolites, basaltic andesites, and andesites. The basaltic andesites and andesites are porphyritic with phenocrysts predominantly of plagioclase. The rhyolites are porphyritic with phenocrysts of alkali‐feldspar, quartz, and minor plagioclase. LA–ICP–MS zircon U–Pb dating yielded an age of 284 ± 2 Ma for rhyolites. The basaltic andesites and andesites show SiO2 ranging from 54.67 to 58.26 wt%, and exhibit moderate TiO2 (1.45–1.77 wt%), and K2O (1.59–2.07 wt%) with low MgO (1.51–2.25 wt%). They display enrichment in HFSE and LILE together with negative Th, Nb, Ta, Ti anomalies, and exhibit low 87Sr/86Sr(t) ratios (0.7040–0.7046), high positive εNd(t) values (+5.82 to +6.16) and young TDM ages (<0.6 Ga). The rhyolites exhibit highSiO2(>75 wt%), negative Nb, Ta anomalies and significant depletion in Ba, Eu, Sr, Ti, and P. They also show high εNd(t) values (+5.51 to +7.08) and young TDM ages (<0.6 Ga), which are close to those of the intermediate rocks. Except for elements dominantly controlled by fractional crystallization, the other trace elements of the bimodal suite display similar patterns. Based on these characteristics, the MELTS simulation further suggests that the felsic rocks were possibly evolved from the intermediate magmas through fractional crystallization of feldspar, clinopyroxene, iron‐titanium oxide, and apatite. In contrast, the magmas parental to basaltic andesites were derived from the remelting of basaltic rocks underplated beneath the lower crust. The petrogenesis of this bimodal suite also provides new insights into Permian crustal reworking in the East Junggar, and suggest that the Junggar Ocean was closed prior to the Early Permian.

show abstract

A Late Palaeozoic disconformity in the Moqinwula area: Insights into the tectonic evolution and basement nature of the Junggar Block, NW China

et al. 2023

View full text Add to dashboard Cite

The recognition of unconformities is important for stratigraphic subdivision and correlation and for determining the timing of tectonic activity and the ocean‐continent transition process. Here, we have identified a Late Palaeozoic disconformity in the Moqinwula area of the northern Junggar Block, NW China. Integrated field relationship observations and sedimentological, biostratigraphical, geochemical and detrital zircon geochronological data, suggest that the underlying Hongliugou Formation is of Devonian age and was deposited in a passive continental margin setting. The overlying Tamugang Formation formed in the Early Carboniferous and was deposited in a foreland basin setting. Integrating the published data and our new work, we suggest a new tectonic evolution model related to the Karamaili ocean‐continent transition process. During the Early Devonian, northward subduction of the Karamaili Ocean plate beneath the East Junggar Belt formed the Yemaquan arc. At this time, a passive margin sequence was deposited on the northern Junggar Block. During the Early Carboniferous, the closure of the Karamaili Ocean resulted from the collision between the Junggar Block and the East Junggar Belt. Foreland basins subsequently developed, forming an extensive unconformity in the accretionary wedge to the north and a disconformity in the relatively rigid and stable Junggar Block to the south. This significant difference in stratigraphic contact relationships confirms that regional convergence‐induced shortening deformation had no significant influence on the northern margin of the Junggar Block, suggesting the existence of a relatively rigid basement, probably an oceanic plateau, under the cover sediments of the Junggar Block.

show abstract

Early Paleozoic arc magmatism in the Kalamaili orogenic belt, Northern Xinjiang, NW China: Implications for the tectonic evolution of the East Junggar terrane

Cited by 27 publications

References 80 publications

Defining the Huangcaopo complex and gabbroic magmatism in the northern Harlik Mountains (NW China): Late Cambrian to latest Permian accretionary growth of the East Junggar Arc?

Defining the Huangcaopo complex and gabbroic magmatism in the northern Harlik Mountains (NW China): Late Cambrian to latest Permian accretionary growth of the East Junggar Arc?

Petrogenesis of an Early Permian bimodal intermediate‐felsic suite in the East Junggar in Central Asian Orogenic Belt and tectonic implications

A Late Palaeozoic disconformity in the Moqinwula area: Insights into the tectonic evolution and basement nature of the Junggar Block, NW China

Contact Info

Product

Resources

About