Distinct mantle sources of low-Ti and high-Ti basalts from the western Emeishan large igneous province, SW China: implications for plume–lithosphere interaction

Xiao, Long; Xu, Yi–Gang; Mei, Houjun; Zheng, Yong‐Fei; He, Bin; Pirajno, Franco

doi:10.1016/j.epsl.2004.10.002

Cited by 469 publications

(288 citation statements)

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“…[2] The Middle to Upper Permian Emeishan continental flood basalts in southwestern China and northern Vietnam form a major part of the Emeishan large igneous province (ELIP) [e.g., Lin, 1985;Zhang et al, 1988;Chung and Jahn, 1995;Song et al, 2001aSong et al, , 2001bAli et al, 2005;Xu et al, 2008;Ukstins Peate and Bryan, 2008], which covers an area of 0.5 × 10 6 km 2 [Xiao et al, 2004] from the eastern margin of the Tibetan Plateau to the western margin of the Yangtze block. Geochemical studies reveal the characteristic temporal and spatial distributions of high-Ti (HT) and low-Ti (LT) basalts in the ELIP, where the dominant low-Ti basalts with low Ti/Y (<500) and "Nd(t) (−0.34 ∼ −3.76) erupted earlier than the high-Ti basalts with high Ti/Y (>500) and "Nd(t) (−1.17 ∼ 0.43), as they occur in the lower section in the western part of the ELIP, whereas the subordinate high-Ti basalts are distributed in both the upper sections of the western part, and uniformly in the eastern part of the ELIP [Xu et al, 2001;Xiao et al, 2004].…”

Section: Introductionmentioning

confidence: 99%

Magnetostratigraphic constraints on two‐stage eruptions of the Emeishan continental flood basalts

Zheng

Yang

Tong³

et al. 2010

Geochem Geophys Geosyst

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[1] Temporal and spatial variations of high and low contents of Ti basalts in the Permian Emeishan large igneous province (ELIP) of southwest China and Vietnam are crucial for modeling of continental basalt formation and the nature of mantle-lithosphere interaction. A combined geochemical and magnetostratigraphic study was carried out at Yanyuan in the inner zone of the ELIP. Geochemical results indicate that the basalts are low-Ti (LT) basalts (Ti/Y ∼ 484.2-511.4) in the Luomapu section and high-Ti (HT) basalts (Ti/Y ∼ 558.2-658.9) in the Gongmushan section. Systematic paleomagnetic sampling and stepwise thermal demagnetization demonstrate that the higher temperature component shows two distinct characteristic remanent magnetizations with northeasterly upward and SWW downward directions. These results indicate a simple magnetostratigraphic normal and reversed polarity pattern from the lower and upper parts of the section, respectively. By comparing with available magnetostratigraphic and paleomagnetic data carried out in the ELIP, these results imply that the eruption of the Emeishan basalts can be divided into early (normal polarity subchron) and late (reversal subchron) stages. The early stage included LT basalts in the inner zone and most of the HT basalts in the intermediate and outer zones, and the late stage contained a part of LT and HT basalts in the upper parts of the sections in the inner zone and a few in the intermediate zone of the ELIP. Correlating with available Middle-Late Permian magnetostratigraphy and the Permian magnetic time scale, the new magnetic polarity sequence result suggests that the ELIP formed over a very short time interval (<1 Myr).

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Section: Introductionmentioning

confidence: 99%

Magnetostratigraphic constraints on two‐stage eruptions of the Emeishan continental flood basalts

Zheng

Yang

Tong³

et al. 2010

Geochem Geophys Geosyst

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“…Some of the criteria are difficult to assess, in particular the eruption duration and doming of the crust. The ELIP is considered to be a mantle plume-derived large igneous province and exhibits, to varying degrees, the criteria outlined for mantle plume-LIPs : Xiao et al 2004Hou et al 2006;Kamenetsky et al 2012). This section summarizes the magmatic features of the ELIP.…”

Section: Magmatic Rocks Of the Elipmentioning

confidence: 99%

“…TiO 2 < 2.5 wt.%) are considered to be derived from either the subcontinental lithospheric mantle (SCLM) or picritic magmas that assimilated upper crust (Fig. 4) (Xiao et al 2004;Wang et al 2007;Fan et al 2008;Song et al 2008;Zhou et al 2008;Qi et al 2010). The significance of the basalt groups is that the composition is indicative of the type of mineral deposit (i.e.…”

Section: The Emeishan Flood Basaltsmentioning

confidence: 99%

“…The early themes of Emeishan basalt studies focused on their division into high-and low-Ti groups and their spatial-temporal distribution (Xu et al 2001;Song et al 2001;Xiao et al 2004;He et al 2010;Lai et al 2012). The division into 'high-Ti' and 'low-Ti' groups corresponded to a petrological distinction as the 'high-Ti' (i.e.…”

Section: The Emeishan Flood Basaltsmentioning

confidence: 99%

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Igneous Rock Associations 16. The Late Permian Emeishan Large Igneous Province

Shellnutt

2015

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“…Late Permian to Early Triassic continental growth in Asia can be accounted for by collage tectonics, exemplified by events such as the collisions between the South China and Indochina cratons, and the North China and South China cratons (Metcalfe, 1999;Ishiwatari and Tsujimori, 2003). At around this time, the plume-related Emeishan flood basalts were erupted over a large region of southwest China, forming a large igneous province (the Emeishan LIP) (Chung and Jahn, 1995;Xu et al, 2001;Xiao et al, 2004;Ali et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Late Permian plume–related magmatism and tectonothermal events in the Kontum Massif, central Vietnam

Owada

Osanai

Nakano

et al. 2016

Journal of Mineralogical and Petrological Sciences

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The Kontum Massif is situated in the southern part of Trans Vietnam Orogenic Belt (TVOB), central Vietnam, and contains various types of magmatic and metamorphic rocks, the latter including both ultrahigh-pressure and ultrahigh-temperature units. While geochronological data indicate the existence of two main tectonothermal events at 480-420 Ma and 270-240 Ma, the most intense metamorphic and magmatic activity occurred between the Late Permian and Early Triassic due to continental collision between the South China and Indochina cratons. In this study, U-Pb LA-ICP-MS geochronological analyses of zircon obtained from two samples of metagabbro and one sample of charnockite from the massif yielded a magmatic age range of 260-250 Ma for all three samples and an inherited age of~1400 Ma for the charnockite. These magmatic ages overlap with those documented for peak metamorphism in the Kontum Massif. When combined with Nd isotopic data for granitic rocks and pelitic gneisses from the region, these data suggest that the massif may have been derived from reworked continental crust. Geochemical characteristics of metagabbros from the massif reveal that the parental basaltic magma can be correlated with the Song Da igneous suite situated in the northern part of the TVOB, and was assimilated by crustal materials. The Song Da igneous suite is a member of the Emeishan large igneous province and resulted from Late Permian mantle plume activity. We conclude that the plume-related magma intruded into the deeper part of Kontum Massif and induced ultrahigh-temperature metamorphism of the lower crust by acting as a heat source.

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Distinct mantle sources of low-Ti and high-Ti basalts from the western Emeishan large igneous province, SW China: implications for plume–lithosphere interaction

Cited by 469 publications

References 43 publications

Magnetostratigraphic constraints on two‐stage eruptions of the Emeishan continental flood basalts

Magnetostratigraphic constraints on two‐stage eruptions of the Emeishan continental flood basalts

Igneous Rock Associations 16. The Late Permian Emeishan Large Igneous Province

Late Permian plume–related magmatism and tectonothermal events in the Kontum Massif, central Vietnam

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