U–Pb zircon ages and Nd, Sr, and Pb isotopes of lower crustal xenoliths from North China Craton: insights on evolution of lower continental crust

Liu, Yongsheng; Gao, Shan; Yuan, Honglin; Zhou, Lian; Liu, Xiaoming; Wang, Xuance; Hu, Zhaochu; Lin-sen, Wang

doi:10.1016/j.chemgeo.2004.06.023

Cited by 233 publications

(135 citation statements)

References 63 publications

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“…The Baiqi adakitic rocks have remarkably different 87 Sr/ 86 Sr ratios and ε Nd(t) values from that of the Precambrian lower crustal xenoliths (Huang et al, 2004;Liu et al, 2004;Yu et al, 2003) and granulite-TTGkhondalite exposed on the Earth's surface (Jahn et al, 1988;Jahn and Zhang, 1984;Liu et al, 2004;Sun et al, 1992) at 125 Ma (Fig. 5), which demonstrate clearly that the Baiqi adakitc rocks were not formed by anatexis of the Precambrian lower continental crust.…”

Section: Links Between Partial Melting Of Thickened Lower Crust and Bmentioning

confidence: 81%

“…Third, although the Baiqi adakitic rocks have various SiO 2 contents from 57 to 71%, their Sr and Nd isotopic compositions are remarkably homogeneous (Table 2). This is the most important, because the homogeneous Sr and Nd isotopic compositions suggest that the Baiqi formation derived from one magma chamber, and were not contaminated significantly by evolved old basement rocks such as 1.9 Ga or 2.5 Ga lower crustal xenoliths from Hannuoba and Nushan (Huang et al, 2004;Yu et al, 2003) or Archean terrane granulites (Jahn et al, 1988;Jahn and Zhang, 1984;Liu et al, 2004;Sun et al, 1992) (Fig. 5).…”

Section: The Case Of Thickened Lower Continental Crust-derived Adakitmentioning

confidence: 99%

“…The xenoliths with convex-upward REE patterns had a cumulate origin (gabbro or pyroxenite) . The Mesozoic Hannuoba granulite xenoliths was products of basaltic underplating has been widely accepted (e.g., Chen et al, 2001;Fan et al, 1998Fan et al, , 2001Liu et al, 2001Liu et al, , 2004Zhang et al, 1998;Zhou et al, 2002).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Baiqi adakitic rocks are characterized by constant initial Nd and Sr isotopic compositions at T = 126 Ma: Liu et al, 2004) and the late-Mesozoic basaltic magmatism from North China Craton (( 87 Sr/ 86 Sr) i = 0.704~0.708, ε Nd (T) = -17 to -12) (Cai et al, 2003;Chen et al, 2004;Zhang et al, 2004) (Fig. 5), and clearly differ from the MORB-like isotopic compositions of the modern arc-related adakites (e.g., Kay and Kay, 1993;Stern and Kilian, 1996).…”

Section: Whole Rock Sr-nd Isotopic Compositionsmentioning

confidence: 99%

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Mesozoic adakites in the Lingqiu Basin of the central North China Craton: Partial melting of underplated basaltic lower crust

Wang

Liu

2006

Geochem. J.

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Intermediate to felsic volcanic rocks of the Baiqi formation from the Lingqiu basin in the central part of North China Craton were studied. Single zircon U-Pb dating indicates that these volcanics formed at 125.8 ± 3.0 Ma. Their Sr and Nd isotopic compositions ( 143 Nd/ 144 Nd = 0.51180-0.51182, 87 Sr/ 86 Sr = 0.7062-0.7063) fall in the range of the nearby lateMesozoic basaltic rocks. These volcanics share geochemical affinities to the adakites formed in the modern arcs, e.g., high Na 2 O (>4.06%), Al 2 O 3 (>15.4%) and Sr (645-1389 ppm) contents and Sr/Y ratios (55~103), and thus being termed as adakitic rocks. However, the Baiqi adakitic rocks were not temporospatially associated with active subduction. Furthermore, their low Cr (2.19-47.4 ppm, with average of 25) and Ni (1.57-20.7 ppm, with average of 12) contents and Mg# (22-47, with average of 32) argue against interaction with the lithospheric mantle. Combined with the geological setting, we suggest that the Baiqi adakitic rocks resulted from partial melting of a thickened lower continental crust associated two episodes of basaltic underplating events. We propose that enormous conductive heating from 80-140 Ma basaltic underplating resulted in partial melting of pre-existing mafic lower crust formed by ~150-160 Ma basaltic underplating. This study provides a case for partial melting of the thickened lower continental crust in association with basaltic underplating events.

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Section: Links Between Partial Melting Of Thickened Lower Crust and Bmentioning

confidence: 81%

Section: The Case Of Thickened Lower Continental Crust-derived Adakitmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Whole Rock Sr-nd Isotopic Compositionsmentioning

confidence: 99%

See 2 more Smart Citations

Mesozoic adakites in the Lingqiu Basin of the central North China Craton: Partial melting of underplated basaltic lower crust

Wang

Liu

2006

Geochem. J.

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“…Whole-rock Sr-Nd-Hf isotopic diagrams of the Jinan gabbros. Data sources: the Sulu mafic rocks (Guo et al, 2004); the carbonatites (Ying et al, 2004 and our unpublished data); the Mesozoic Taihangshan mafic rocks Wang et al, 2006); the Jinan gabbros (Guo et al, 2001;Huang et al, 2012;Yang et al, 2012a); NCB LCC (Huang et al, 2004;Liu et al, 2004;Zhou et al, 2002); NCB UCC (Cai et al, 2011); Perovskite in Mengyin kimberlites (Yang et al, 2009); Fangcheng basalts (J.T. Guo et al, 2013;Zhang et al, 2002); Cenozoic basalts (Chen et al, 2009).…”

mentioning

confidence: 99%

Formation of mafic magmas through lower crustal AFC processes — An example from the Jinan gabbroic intrusion in the North China Block

Guo

Wang

et al. 2013

Lithos

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Geochemical variations in Japan Sea back‐arc basin basalts formed by high‐temperature adiabatic melting of mantle metasomatized by sediment subduction components

Hirahara

Kimura

Senda

et al. 2015

Geochem Geophys Geosyst

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The Yamato Basin in the Japan Sea is a back-arc basin characterized by basaltic oceanic crust that is twice as thick as typical oceanic crust. Two types of ocean floor basalts, formed during the opening of the Japan Sea in the Middle Miocene, were recovered from the Yamato Basin during Ocean Drilling Program Legs 127/128. These can be considered as depleted (D-type) and enriched (E-type) basalts based on their incompatible trace element and Sr-Nd-Pb-Hf isotopic compositions. Both types of basalts plot along a common mixing array drawn between depleted mantle and slab sediment represented by a sand-rich turbidite on the Pacific Plate in the NE Japan fore arc. The depleted nature of the D-type basalts suggests that the slab sediment component is nil to minor relative to the dominant mantle component, whereas the enrichment of all incompatible elements in the E-type basalts was likely caused by a large contribution of bulk slab sediment in the source. The results of forward model calculations using adiabatic melting of a hydrous mantle with sediment flux indicate that the melting conditions of the source mantle for the D-type basalts are deeper and hotter than those for the E-type basalts, which appear to have formed under conditions hotter than those of normal mid-oceanic ridge basalts (MORB). These results suggest that the thicker oceanic crust was formed by greater degrees of melting of a hydrous metasomatized mantle source at unusually high mantle potential temperature during the opening of the Japan Sea.

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U–Pb zircon ages and Nd, Sr, and Pb isotopes of lower crustal xenoliths from North China Craton: insights on evolution of lower continental crust

Cited by 233 publications

References 63 publications

Mesozoic adakites in the Lingqiu Basin of the central North China Craton: Partial melting of underplated basaltic lower crust

Mesozoic adakites in the Lingqiu Basin of the central North China Craton: Partial melting of underplated basaltic lower crust

Formation of mafic magmas through lower crustal AFC processes — An example from the Jinan gabbroic intrusion in the North China Block

Geochemical variations in Japan Sea back‐arc basin basalts formed by high‐temperature adiabatic melting of mantle metasomatized by sediment subduction components

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