Late Cenozoic basaltic volcanism around the Taiwan Strait, SE China: Product of lithosphere-asthenosphere interaction during continental extension

Chung, Sun‐Lin; Sun, Shen-Su; Tu, Kan; Chen, Cheng-Hong; Lee, Chi-Yu

doi:10.1016/0009-2541(94)90101-5

Cited by 178 publications

(188 citation statements)

References 56 publications

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“…The volcanic rocks are predominantly basalts and are thought to have been derived from variable mantle sources (Chung et al, 1994;Fan and Hooper, 1991;Zhou and Armstrong, 1982;Zou et al, 2000). It is commonly accepted that basalts in SE China originated from a mixed source involving asthenospheric mantle and EM2, and that those in NE China were derived from a mixed source of asthenospheric mantle and EM1 (e.g.…”

Section: Introductionmentioning

confidence: 99%

Chalcophile elemental constraints on sulfide-saturated fractionation of Cenozoic basalts and andesites in SE China

Yang

Zhao

et al. 2011

Lithos

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Section: Introductionmentioning

confidence: 99%

Chalcophile elemental constraints on sulfide-saturated fractionation of Cenozoic basalts and andesites in SE China

Yang

Zhao

et al. 2011

Lithos

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“…It is noted that the MORB normalized trace element patterns for these samples (Fig. 6) are similar to those of Late Cenozoic basalts in Southeast China (Peng et al, 1986;Flower et al, 1992;Liu et al, 1994;Qi et al, 1994;Chung et al, 1994Chung et al, , 1995Zou et al, 2000;Ho et al, 2003). The MORB-normalized multielement diagrams display small differences, for example the Luokou mafic rocks exhibit weak Rb positive anomalies and minor Ba negative anomalies, while the Tianxinggang rocks show weak Ba positive anomalies and minor Rb negative anomalies.…”

Section: Major and Trace Element Datamentioning

confidence: 51%

“…mantle component (Peng et al, 1986;Flower et al, 1992;Tu et al, 1991Tu et al, , 1992Liu et al, 1994;Qi et al, 1994;Chung et al, 1994Chung et al, , 1995Zou et al, 2000;Ho et al, 2003). It is also generally accepted that Late Cenozoic volcanism in Southeast China was related to lithospheric extension due to asthenospheric upwelling (Chung et al, 1994Qi et al, 1994;Zou et al, 2000;Ho et al, 2003).…”

Section: Secular Magma Sources For Basaltic Rocksmentioning

confidence: 99%

“…It is also generally accepted that Late Cenozoic volcanism in Southeast China was related to lithospheric extension due to asthenospheric upwelling (Chung et al, 1994Qi et al, 1994;Zou et al, 2000;Ho et al, 2003). On the other hand, Cretaceous basaltic magmatism exhibits enriched geochemical and isotopic features, similar to those of continental arc basalts, indicating that they were derived from highly heterogeneous EM 2 lithospheric mantle with a minor involvement of asthenospheric mantle (Lan et al, 1995;Li and McCulloch, 1998;Xie et al, 2001;Xiong et al, 2003;Ge et al, 2003;Xie et al, 2006), suggesting contamination associated with the subduction of Paleo-Pacific plate (Jahn et al, 1990;Northrup et al, 1995;Lapierre et al, 1997).…”

Section: Secular Magma Sources For Basaltic Rocksmentioning

confidence: 99%

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K-Ar dating, geochemical and Sr-Nd-Pb isotopic systematics of Paleocene mafic rocks in Central Jiangxi, SE China: Evidence for lithosphere replacement

Xie

Mao

et al. 2006

Geochem. J.

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Geochemical and isotopic studies were carried out on Paleocene mafic rocks in the Taihe Basin, central Jiangxi, Southeast China, in order better to understand their magma sources and tectonic implications. K-Ar dating results show that these mafic rocks intruded during the Paleocene (50-65 Ma). These Paleocene mafic rocks are porphyritic diabase and have similar geochemical features, such as strong enrichment of large ion lithophile element (LILE, e.g., Rb, Ba, Sr), slight enrichment of light rare earth element (LREE) and high field strength element (HFSE, e.g., Nb, Ta, Ti, P). The mafic rocks are also characterized by high rare earth element (REE) and minor Eu anomalies (δEu = 0.88-1.2) and have uniform initial 87 Sr/ 86 Sr (0.7041-0.7064) and Pb isotopic composition ( 206 Pb/ 204 Pb = 18.338-18.677) as well as a relatively wide range of initial Nd isotopic ratios (ε Nd (T)) varying from +0.8 to +6.2. These geochemical characteristics are different from those of subduction-related basalts, but similar to oceanic island basalts (OIB). Geochemical and isotopic evidence suggests that mafic rocks in the Taihe Basin were not significantly affected by crustal contamination and originated from asthenospheric mantle with a minor involvement of EM 2 mantle component. It is noted that Cretaceous basaltic rocks in Southeast China show enriched geochemical and isotopic compositions and were derived from a highly heterogeneous lithospheric mantle with minor asthenosphere components. On the other hand, Late Cenozoic basalts in Southeast China, which display OIB-like geochemical characteristics, were probably generated by melting of depleted asthenospheric mantle (DMM or MORB) with an involvement of EM 2 lithospheric mantle and a paucity of EM 1 lithospheric mantle. The Paleocene mafic rocks of the Taihe Basin exhibit transitional geochemical features between Cretaceous and Late Cenozoic basaltic magmatism, indicating that the involvement of asthenospheric mantle beneath Southeast China increased with time from Late Mesozoic to Cenozoic. It is suggested that the lithosphere replacement beneath Southeast China was associated with lithosphere extension and thinning, with decompression melting of the upwelling asthenosphere having taken place during the Paleocene period. Lithosphere replacement might be related to subduction roll-back or/and steepening of Paleo-Pacific plate due to injection of asthenospheric material into the mantle wedge beneath Southeast China.

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“…In this scenario, the resulting continuous upwelling of unmetasomatized asthenospheric mantle would have triggered partial melting of overlying subducted oceanic sediment-metasomatized asthenospheric and lithospheric mantle or relatively juvenile lithospheric mantle (e.g., Pe-Piper et al, 2009;Jiang et al, 2011) or interactions between melts derived from metasomatized asthenospheric mantle and lithospheric mantle (e.g., Chung et al, 1994;Xu et al, 2005). Basaltic magmas generated by these processes would have underplated, thickened and reworked the existing lower crust to form a new lower crust that itself was subject to melting as a result of continued basaltic magma underplating (Annen et al, 2006).…”

Section: Geodynamic Processesmentioning

confidence: 99%

Late Early Cretaceous adakitic granitoids and associated magnesian and potassium‐rich mafic enclaves and dikes in the Tunchang–Fengmu area, Hainan Province (South China): Partial melting of lower crust and mantle, and magma hybridization

Wang

Jia

et al. 2012

Chemical Geology

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Late Cenozoic basaltic volcanism around the Taiwan Strait, SE China: Product of lithosphere-asthenosphere interaction during continental extension

Cited by 178 publications

References 56 publications

Chalcophile elemental constraints on sulfide-saturated fractionation of Cenozoic basalts and andesites in SE China

Chalcophile elemental constraints on sulfide-saturated fractionation of Cenozoic basalts and andesites in SE China

K-Ar dating, geochemical and Sr-Nd-Pb isotopic systematics of Paleocene mafic rocks in Central Jiangxi, SE China: Evidence for lithosphere replacement

Late Early Cretaceous adakitic granitoids and associated magnesian and potassium‐rich mafic enclaves and dikes in the Tunchang–Fengmu area, Hainan Province (South China): Partial melting of lower crust and mantle, and magma hybridization

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