Geochronology and geochemistry of late Archean adakitic plutons from the Taishan granite–greenstone Terrain: Implications for tectonic evolution of the eastern North China Craton

Peng, Touping; Wu, Fan; Peng, Bingxia

doi:10.1016/j.precamres.2012.03.008

Cited by 86 publications

(32 citation statements)

References 109 publications

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“…3). This age can be interpreted as the crystallization age of the magmatic precursor of the amphibolite, and is similar to results obtained from both low-Si adakites (defined as sanukitoid by Wang et al, 2009) and high-Si adakites (Peng et al, 2012a) in the TSGT (Fig. 1b).…”

Section: Geochronologysupporting

confidence: 86%

“…Furthermore, the coeval occurrence of boninites with high-Mg andesite and slab melt-related rocks (e.g., adakites) has been recognized in some present-day arcs (e.g., Tonga, Falloon et al, 2008;IzuBonin-Mariana Fore-arc, Pearce et al, 1992), providing evidence of slab melt-related enrichment. In the TSGT, the recent identification of coeval adakitic rocks representing slab-derived melts (Peng et al, 2012a), further supports the likelihood of a key contribution from slab-derived melts to explain the enriched nature of the Taishan SHMBs. The synchronous occurrence of high-Mg sanukitoids showing an affinity to low-Si adakite (Martin et al, 2005), which are derived from partial melting of enriched peridotite mantle metasomatized by oceanic slab-derived melt (i.e., high Sr/Y and low Y and Yb contents; Wang et al, 2009;Peng et al, 2012a), also lends support for the production of enriched mantle in the study area at that time.…”

Section: Mantle Source Charactermentioning

confidence: 64%

“…In addition, a number of Neoarchean pyroxenite, gabbro, diorite, granodiorite and granite plutons intrude the TTG gneisses within the TSTG (Jahn et al, 1988;Cao et al, 1996;Wu et al, 1998); field observations suggest that these later plutons were metamorphosed at lower grades than the gneissic country rocks. Recent precise zircon U-Pb dating results show that they were emplaced at the same time around 2.54 Ga (Hou et al, 2008;Shen et al, 2004Shen et al, , 2007Zhao et al, 2008c;Wang et al, 2009;Peng et al, 2012a).…”

Section: Geological Setting and Petrographymentioning

confidence: 99%

“…This includes the occurrence of voluminous TTG series and subduction-related sanukitoids and adakitic intrusive rocks (Jahn et al, 1988;Cao et al, 1996;Zhang et al, 2001;Yang et al, 2008;Wang et al, 2009;Wan et al, 2011Wan et al, , 2012Peng et al, 2012a). Several recent studies have revealed two major crust-forming episodes in the Eastern Block of the NCC, mainly based on U-Pb geochronology and Nd-Hf isotope model ages for the Late Archean supracrustal suites and associated rocks (Jahn et al, 1988;Zhao et al, 2001;Wu et al, 2005c;Polat et al, 2006b;Yang et al, 2008;Wan et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Several recent studies have revealed two major crust-forming episodes in the Eastern Block of the NCC, mainly based on U-Pb geochronology and Nd-Hf isotope model ages for the Late Archean supracrustal suites and associated rocks (Jahn et al, 1988;Zhao et al, 2001;Wu et al, 2005c;Polat et al, 2006b;Yang et al, 2008;Wan et al, 2011). However, more precise geochronological data and systematic geochemical investigations of the Late Neoarchean basic-intermediate rocks, coeval with the supracrustal rock suites and intrusive rocks in the Eastern Block, are still rare (Jahn et al, 1988;Yang et al, 2008;Li et al, 2010), especially in the case of 2.60-2.50 Ga magmatism in the Taishan granite-greenstone terrane (TSGT; Jahn et al, 1988;Wang et al, 2009;Peng et al, 2012a). It is still unknown how these rocks link to TTG gneisses and other intrusive rocks because their geological relationships are commonly obscured.…”

Section: Introductionmentioning

confidence: 99%

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Neoarchean siliceous high-Mg basalt (SHMB) from the Taishan granite–greenstone terrane, Eastern North China Craton: Petrogenesis and tectonic implications

Peng

Wilde

et al. 2013

Precambrian Research

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Section: Geochronologysupporting

confidence: 86%

Section: Mantle Source Charactermentioning

confidence: 64%

Section: Geological Setting and Petrographymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Neoarchean siliceous high-Mg basalt (SHMB) from the Taishan granite–greenstone terrane, Eastern North China Craton: Petrogenesis and tectonic implications

Peng

Wilde

et al. 2013

Precambrian Research

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Crustal reworking in the North China Craton at ~2.5 Ga: evidence from zircon U–Pb age, Hf isotope and whole rock geochemistry of the felsic volcano‐sedimentary rocks from the western Shandong Province

et al. 2013

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The western Shandong Province (WSP) is one of the typical Neoarchaean granite–greenstone belts in the Eastern Block of the North China Craton (NCC) and is an important region to investigate the early Precambrian evolutionary history of the NCC. The Taishan association, consisting of a ~2.7 Ga komatiite–tholeiite sequence and a ~2.5 Ga felsic volcano‐sedimentary sequence, is the major lithological assemblage in the WSP. In the Qixingtai area, the felsic volcano‐sedimentary sequence, partly subjected to anatexis, is composed of hornblende gneiss, voluminous fine‐grained biotite gneiss and biotite plagioclase gneiss. SHRIMP zircon dating shows that the protolith of the biotite plagioclase gneiss formed after ca. 2.53 Ga. The tonalite intrusion into the volcanic protoliths of the fine‐grained biotite gneiss and biotite plagioclase gneiss occurred at 2.52 Ga. Our age data constrain the time of formation of the felsic volcano‐sedimentary sequence in the Taishan area as 2.53–2.52 Ga. The majority of zircons from the felsic volcano‐sedimentary rocks have intermediate εHf(t) values (−1.2 to +2.1). The whole rock Nd isotopes of the Taishan felsic volcano‐sedimentary rocks yield the εNd(t = 2522 Ma) values of +2.6 to −1.8 and TDM2 ages 3.03–2.68 Ga. These values indicate the pre‐existing crust was reworked at the end of the Neoarchaean (~2.5 Ga). The Taishan felsic volcano‐sedimentary rocks are rhyodacite–dacite and andesite in composition. These rocks and the tonalite display similar high SiO2 (65–72 wt.%) and low MgO (1–2 wt.%) content. In contrast, the minor andesites in the area have lower SiO2 (61–62 wt.%) and higher MgO (5.3–6.3 wt.%), suggesting more mantle contribution during their petrogenesis. However, the Mg‐rich andesites have identical rare earth element and multi‐element patterns with the rhyodacite–dacites and distinguish them from the Taishan sanukitoids. We suggest that the 2.53–2.52 Ga felsic volcanics of the Taishan association are the products of partial melting of a subducted oceanic crust. The andesites were produced by minor modification of the ascending tonalite–trondhjemite–granodiorite‐type magma by the mantle wedge. Our study indicates that (1) the tectonic regime of the WSP greenstone belt was dominated by an arc‐subduction system at ~2.52 Ga and (2) the 2.53–2.52 Ga felsic volcano‐sedimentary rocks and intrusive tonalite are the products of crustal reworking. The felsic volcano‐sedimentary sequence of the Taishan association and other ~2.5 Ga arc‐like assemblages in the NCC provide important clues to understand the nature of the tectonothermal events at the end of the Neoarchaean. Copyright © 2013 John Wiley & Sons, Ltd.

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Neoarchaean subduction tectonics in Western Shandong Province, China: Evidence from geochemistry and zircon U–Pb–Hf isotopes of metabasalts

et al. 2019

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Neoarchaean supracrustal rocks, which were discovered in the Longhuzhai and Menglianggu areas of the Western Shandong Province (WSP) in the Eastern Block of the North China Craton (NCC), are fine-to medium-grained amphibolites that commonly underwent greenschist-to amphibolite-facies metamorphism. LA-ICP-MS zircon U-Pb analyses revealed that these metabasalts erupted at 2,527 ± 5 to 2,514 ± 4 Ma. These supracrustal rocks are tholeiitic basalts in chemical composition and exhibit relatively high SiO 2 (49.30-53.34 wt%) and MgO (5.24-11.82 wt%) contents but low TiO 2 (0.41-0.75 wt%) contents. They display flat chondrite-normalized rare earth element (REE) patterns ((La/Yb) N = 1.21-2.60) and negative Nb, Ta, and Ti anomalies ((Nb/La) PM = 0.16-0.54), which are similar to those of typical island arc tholeiites (IATs) in subduction-related settings. These findings, combined with the positive zircon εHf(t) values (+2.51 to +8.90) and εNd(t) values (+0.19 to +3.65), suggest that these metabasalts were derived from the partial melting of a depleted mantle source that was metasomatized by slab-derived fluids at shallow levels in the upper mantle. Accordingly, the development of arc-related tholeiitic volcanic rocks within the interior of the WSP imply that the Neoarchaean (2.6-2.5 Ga) subduction-related slab-wedge interaction mechanism was widespread in the WSP and played a crucial role in the formation of the continental crust and its growth.

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Geochronology and geochemistry of late Archean adakitic plutons from the Taishan granite–greenstone Terrain: Implications for tectonic evolution of the eastern North China Craton

Cited by 86 publications

References 109 publications

Neoarchean siliceous high-Mg basalt (SHMB) from the Taishan granite–greenstone terrane, Eastern North China Craton: Petrogenesis and tectonic implications

Neoarchean siliceous high-Mg basalt (SHMB) from the Taishan granite–greenstone terrane, Eastern North China Craton: Petrogenesis and tectonic implications

Crustal reworking in the North China Craton at ~2.5 Ga: evidence from zircon U–Pb age, Hf isotope and whole rock geochemistry of the felsic volcano‐sedimentary rocks from the western Shandong Province

Neoarchaean subduction tectonics in Western Shandong Province, China: Evidence from geochemistry and zircon U–Pb–Hf isotopes of metabasalts

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