Neoproterozoic IAT intrusion into Mesoproterozoic MOR Miaowan Ophiolite, Yangtze Craton: Evidence for evolving tectonic settings

Deng, Hao; Peng, Songbai; Polat, Ali; Kusky, Timothy; Jiang, Xingfu; Han, Qingsen; Wang, Lu; Huang, Yang H.; Wang, Junpeng; Zeng, Wen; Hu, Zhengxiang

doi:10.1016/j.precamres.2016.12.003

Cited by 73 publications

(22 citation statements)

References 118 publications

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“…Therefore, the late Mesoproterozoic magmatism (ca. 1,150 Ma) represents the maximum depositional age of the metapelite in the southern Kongling terrane are probably well connected with the formation of the Miaowan ophiolite formed in a fore‐arc basin tectonic setting (Deng et al., 2017; Jiang et al., 2016; Lu et al., 2020).…”

Section: Discussionmentioning

confidence: 90%

“…980–1,000 Ma Island Arc Tholeiite‐affinity (IAT) diabasic intrusion (Deng et al., 2017; Jiang et al., 2012). Metapelite occurs as tectonic slices that are associated with the basalt of the late Mesoproterozoic Miaowan ophiolite complex (Deng et al., 2017; Jiang et al., 2016), in addition, metaplite is located at the boundary of late Mesoproterozoic ophiolite and Archean‐Paleoproterozoic paragneiss (Figure 1c). Paragneiss is exposed in the vicinity of Xiaoyucun area (Figures 1b and 1c), and roughly classified into the Archean Gucunping formation according to the previous regional geological surveys.…”

Section: Geological Backgroundmentioning

confidence: 99%

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Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Jiang

Peng

Wang

2022

Earth and Space Science

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The Kongling terrane (Huangling dome) outcrops Precambrian metamorphic basement of the Yangtze craton. However, the Precambrian tectonic evolution of the southern Kongling terrane remains poorly constrained. In this contribution, we report zircon geochronology of the metasedimentary rocks from southern Kongling terrane of the Yangtze craton. Zircon U‐Pb dating results yielded magmatic age clusters at ca. 3,000 Ma, ca. 1,520 Ma, ca. 1,150 Ma, ca. 860 Ma, 900–920 Ma, and 980 Ma, and metamorphic age at ca. 2,900 Ma. These data display that the southern Kongling terrane witnessed Mesoarchean magmatism and metamorphic event, Mesoproterozoic and Neoproterozoic magmatism. In combination with previous studies, it is proposed that the Precambrian metamorphic basement of the Yangtze craton was amalgamated by the multi‐stage subduction‐collision processes at ca. 3,000–2,900 Ma, ca. 2,000–1,800 Ma, and ca. 1,100–940 Ma. In addition, the Proterozoic processes were related to the assembly and breakup of Columbia and Rodinia supercontinents.

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Section: Discussionmentioning

confidence: 90%

Section: Geological Backgroundmentioning

confidence: 99%

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Jiang

Peng

Wang

2022

Earth and Space Science

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“…Although the exact position of the Yangtze Block in Rodinia is still debated (Li et al, 1995;Zheng et al, 2008Zheng et al, , 2013Li and Evans, 2011;Cawood et al, 2013Cawood et al, , 2016, a consensus has recently been achieved that a tectonic switch from oceanic subduction (ca. 1100-850 Ma;Deng et al, 2016;Xu et al, 2016;Wu et al, 2019;Zhou et al, 2019) to continental rifting (ca. 800-700 Ma; Zheng et al, 2008Zheng et al, , 2009Fu et al, 2013;He et al, 2016) occurred in the northern margin of the Yangtze Block Zhang et al, 2019).…”

Section: Geological Significancementioning

confidence: 99%

Neoproterozoic Crustal Reworking and Growth in the Zhangbaling Uplift, Tan–Lu Fault Zone: Evidence from the Feidong Complex and Zhangbaling Group

Niu

Cai

et al. 2020

Acta Geologica Sinica (Eng)

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Intensive mid‐Neoproterozoic magmatism is the salient feature of the Yangtze Block, preserving abundant information about crustal reworking and growth. Zircon U–Pb–Lu–Hf isotope analysis was performed on material from the Feidong Complex (FDC) and Zhangbaling Group (ZBLG) of the Zhangbaling Uplift, in order to determine the age and magmatic source of the Neoproterozoic igneous rocks as well as the detrital provenance for the sedimentary rocks, to further provide important data for understanding the mid‐Neoproterozoic crustal evolution of the Northeast Yangtze Block. The amphibolite and gneissic granites in the Feidong Complex (FDC) gave similar protolith ages of 782–776 Ma. The synmagmatic zircons exhibited variable negative ∊Hf(t) values of –26.9 to –8.3. Early (ca. 2.4 Ga) to late Paleoproterozoic (ca. 2.0–1.9 Ga) inherited zircons were found in the gneissic monzogranite, with negative ∊Hf(t) values of –11.2 to –7.2, indicating strong reworking of the ancient crustal materials of the Northeast Yangtze Block. Whereas the amphibolites represent minor crustal growth through emplacement of continental rifting‐related mafic magmas. The quartz–keratophyres in the Xileng Formation of the ZBLG in contrast systematically yield young protolith crystallization ages of 754–727 Ma with high ∊Hf(t) values of –2.0 to +5.6, indicating their derivation from the reworking of juvenile crustal materials. The detrital zircons from the metasiltstone in the Beijiangjun Formation yield variable 206Pb/238U ages (871–644 Ma) with a peak age at 741 ± 11 Ma and ∊Hf(t) values of –4.3 to +5.3, which is consistent with those of the Xileng Formation, but distinct from the FDC, indicating that the provenance of the metasiltstone is primarily the underlying Xileng Formation. The mid‐Neoproterozoic igneous and sedimentary rocks of the Zhangbaling Uplift were products from continental rifting zones along the northern margin of the Yangtze Block, situated in different positions from the Susong Complex and the Haizhou Group. The transition from ancient to juvenile crustal sources for felsic magmatic rocks is attributed to gradually increased crustal extension during continental rifting.

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“…Recent studies suggest that a Late Mesoproterozoic arc system developed along the western and northern margins of the Yangtze Block (Qiu et al 2011;Deng et al 2017;Hu et al 2017). In the northern margin of the Yangtze Block, the Shennongjia volcanic sequence (c. 1103 Ma) is proposed to have developed in an island-arc setting based on an understanding that calc-alkaline rocks are restricted to subduction settings (Qiu et al 2011).…”

Section: C2 a Continental Back-arc Setting?mentioning

confidence: 99%

“…In the northern margin of the Yangtze Block, the Shennongjia volcanic sequence (c. 1103 Ma) is proposed to have developed in an island-arc setting based on an understanding that calc-alkaline rocks are restricted to subduction settings (Qiu et al 2011). Furthermore, the gabbros within the Miaowan ophiolite (c. 1002 to 973 Ma) exhibit arc geochemical signatures with negative Nb-Ta-Ti anomalies, supporting an island-arc setting or an active continental margin (Deng et al 2017). In the western Yangtze Block, gabbros from the c. 1066 Ma (SHRIMP U-Pb) Shimian SSZ-type ophiolite display similar geochemical characteristics to back-arc basin basalt (BABB), suggesting a back-arc setting associated with oceanic subduction (Hu et al 2017).…”

Section: C2 a Continental Back-arc Setting?mentioning

confidence: 99%

Petrogenesis and tectonic implications of Late Mesoproterozoic A1- and A2-type felsic lavas from the Huili Group, southwestern Yangtze Block

Wang

Yin

et al. 2019

Geol. Mag.

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This paper presents new LA-ICP-MS zircon U–Pb chronology, whole-rock geochemical and zircon Hf isotopic data for the felsic lavas of the Huili Group from the southwestern Yangtze Block. LA-ICP-MS zircon U–Pb dating shows that these rocks were emplaced in Late Mesoproterozoic time (∼1028 to 1019 Ma). Relative to typical I-type and S-type granitoids, all the samples are characterized by low Sr and Eu, and high high-field-strength element contents, highTFeO/MgO, enriched rare earth element compositions and negative Eu anomalies, indicating that they share the geochemical signatures of A-type granitoid. They can be further divided into two groups: Group I and Group II. Group I are A1-type felsic rocks and were produced by fractional crystallization of alkaline basaltic magmas. The Group II felsic lavas belong to the A2-type and were derived by partial melting of a crustal source with mixing of mantle-derived magmas. Both Group I and Group II felsic lavas may erupt in a continental back-arc setting. The coexistence of A1- and A2-type rocks in the southwestern Yangtze Block suggests that they can occur in the same tectonic setting.

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Neoproterozoic IAT intrusion into Mesoproterozoic MOR Miaowan Ophiolite, Yangtze Craton: Evidence for evolving tectonic settings

Cited by 73 publications

References 118 publications

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Neoproterozoic Crustal Reworking and Growth in the Zhangbaling Uplift, Tan–Lu Fault Zone: Evidence from the Feidong Complex and Zhangbaling Group

Petrogenesis and tectonic implications of Late Mesoproterozoic A1- and A2-type felsic lavas from the Huili Group, southwestern Yangtze Block

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