Thermo-tectonic destruction of the archaean lithospheric keel beneath the sino-korean craton in china: evidence, timing and mechanism

Xu, Yi–Gang

doi:10.1016/s1464-1895(01)00124-7

Cited by 780 publications

(638 citation statements)

References 41 publications

Supporting

Mentioning

601

Contrasting

Unclassified

Order By: Relevance

“…So far, two extreme models exist: the delamination model (e.g., Wu et al 2000Wu et al , 2003Gao et al 2002Gao et al , 2004Gao et al , 2008Chu et al 2009) and the thermal-mechanical erosion model (e.g., Griffin et al 1998;Menzies and Xu 1998;Xu 2001;Menzies et al 2007). In the delamination model, the thickened eclogitic lower crust, together with the lithospheric mantle below, delaminates into the convection mantle.…”

Section: Geological Background and Petrographymentioning

confidence: 99%

“…However, this model fails to answer two main questions. (1) The difference in density between the eclogite and cratonic SCLM is not large enough to succeed in delaminating the whole thick SCLM (e.g., Xu 2001). (2) The destruction period of NCC lasts more than 100 Ma (e.g., Xu 2001), rather than a short time interval expected by delamination (\10 Ma; e.g., Lustrino 2005).…”

Section: Geological Background and Petrographymentioning

confidence: 99%

“…1a). They were thought to be peridotite melts formed in asthenospheric mantle (e.g., Fan and Hooper 1991;Xu 2001). The rock types of these basalts gradually change from tholeiitic basalts with subordinate subalkali basalts in Early Tertiary to alkali and strongly b Distribution of Cenozoic basalts in Chifeng area, northern edge of the NCC (modified after Jia et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…The rock types of these basalts gradually change from tholeiitic basalts with subordinate subalkali basalts in Early Tertiary to alkali and strongly b Distribution of Cenozoic basalts in Chifeng area, northern edge of the NCC (modified after Jia et al 2002). The location of Xindian basalts is marked with black four-point star in the southeastern side of the area alkali basalts in Late Tertiary and Quaternary (Fan and Hooper 1991;Liu et al 1992a;Menzies and Xu 1998;Xu 2001Xu , 2007. In view of the normal mantle potential temperature in the eastern NCC during Cenozoic, this temporal variation of basalts was explained as a result of lithospheric thickening during Cenozoic (Menzies and Xu 1998;Xu 2001Xu , 2007.…”

Section: Introductionmentioning

confidence: 99%

“…The location of Xindian basalts is marked with black four-point star in the southeastern side of the area alkali basalts in Late Tertiary and Quaternary (Fan and Hooper 1991;Liu et al 1992a;Menzies and Xu 1998;Xu 2001Xu , 2007. In view of the normal mantle potential temperature in the eastern NCC during Cenozoic, this temporal variation of basalts was explained as a result of lithospheric thickening during Cenozoic (Menzies and Xu 1998;Xu 2001Xu , 2007. However, recent studies on Cenozoic basalts from Shandong province, Subei basin and Shuangliao, eastern NCC, showed that basalts from these areas were pyroxenite melts (Chen et al 2009;Zhang et al 2009;Wang et al 2011;Zeng et al 2011;Xu et al 2012), thus casting doubt on the previous assumption of peridotite melts and assessment on variation in lithospheric thickness.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Zhang

Qian

et al. 2012

Contrib Mineral Petrol

Self Cite

View full text Add to dashboard Cite

The geochemical characteristics of melt inclusions and their host olivines provide important information on the processes that create magmas and the nature of their mantle and crustal source regions. We report chemical compositions of melt inclusions, their host olivines and bulk rocks of Xindian basalts in Chifeng area, North China Craton. Compositions of both bulk rocks and melt inclusions are tholeiitic. Based on petrographic observations and compositional variation of melt inclusions, the crystallizing sequence of Xindian basalts is as follows: olivine (at MgO [ *5.5 wt%), plagioclase (beginning at MgO = *5.5 wt%), clinopyroxene and ilmenite (at MgO \ 5.0 wt%). High Ni contents and Fe/Mn ratios, and low Ca and Mn contents in olivine phenocrysts, combining with low CaO contents of relatively high MgO melt inclusions (MgO [ 6 wt%), indicate that Xindian basalts are possibly derived from a pyroxenite source rather than a peridotite source. In the CS-MS-A diagram, all the high MgO melt inclusions (MgO [ 6.0 wt%) project in the field between garnet ? clinopyroxene ? liquid and garnet ? clinopyroxene ? orthopyroxene ? liquid near 3.0 GPa, further suggesting that residual minerals are mainly garnet and clinopyroxene, with possible presence of orthopyroxene, but without olivine. Modeling calculations using MELTS show that the water content of Xindian basalts is 0.3-0.7 wt% at MgO = 8.13 wt%. Using 20-25 % of partial melting estimated by moderately incompatible element ratios, the water content in the source of Xindian basalts is inferred to be C450 ppm, much higher than 6-85 ppm in dry lithospheric mantle. The melting depth is inferred to be *3.0 GPa, much deeper than that of tholeiitic lavas (\2.0 GPa), assuming a peridotite source with a normal mantle potential temperature. Such melting depth is virtually equal to the thickness of lithosphere beneath Chifeng area (*100 km), suggesting that Xindian basalts are derived from the asthenospheric mantle, if the lithospheric lid effect model is assumed.

show abstract

Section: Geological Background and Petrographymentioning

confidence: 99%

Section: Geological Background and Petrographymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Zhang

Qian

et al. 2012

Contrib Mineral Petrol

Self Cite

View full text Add to dashboard Cite

show abstract

Magnetic mineralogy of pyroxenite xenoliths from Hannuoba basalts, northern North China Craton: Implications for magnetism in the continental lower crust

Zheng

Zeng

et al. 2014

J. Geophys. Res. Solid Earth

View full text Add to dashboard Cite

Studies of the petrology, mineral chemistry, and rock magnetic properties of nine pyroxenite xenoliths from Hannuoba basalts, northern North China Craton, have been made to determine the magnetization signature of the continental lower crust. These pyroxenites are weakly magnetic with low average susceptibility (χ) and saturation isothermal remanent magnetization (M rs ) of 39.59 × 10 À8 m 3 kg À1and 12.05 × 10 À3 Am 2 kg À1 , respectively. The magnetic minerals are mainly magnetite, pyrrhotite, and Fe-rich spinel, which significantly contribute to χ and natural remanent magnetization. Magnetite occurs as interstitial microcrystals together with zeolite aggregates, indicating a secondary origin in a supergene environment. In contrast, pyrrhotite and Fe-rich spinel were formed prior to the xenoliths' ascent to the surface, as evidenced by their dominant occurrence as tiny inclusions and thin exsolution lamellae in pyroxene. The Fe-rich spinel has~50% mole fraction of Fe 3 O 4 and corresponds to the strongest magnetization, and its coexistence with Mg-rich spinel implies a reheating event due to the underplating of basaltic magma. Besides, armalcolite and ilmenite were found in the reaction rims between xenoliths and the basalt, but they contribute little to the whole rock magnetization. However, these pyroxenite xenoliths would be nonmagnetic at in situ depths, as well as peridotite and mafic granulite xenoliths derived from the crust-mantle transition zone (~32-42 km). Therefore, we suggest the limiting depth of magnetization at the boundary between weakly magnetic deep-seated (lower crust and upper mantle) xenoliths and strongly magnetic Archean granulite facies rocks (~32 km) in Hannuoba, northern North China Craton.

show abstract

Numerical modeling of convective erosion and peridotite‐melt interaction in big mantle wedge: Implications for the destruction of the North China Craton

2014

JGR Solid Earth

View full text Add to dashboard Cite

The deep subduction of the Pacific Plate underneath East Asia is thought to have played a key role in the destruction of the North China Craton (NCC). To test this hypothesis, this paper presents a new 2-D model that includes an initial stable equilibrated craton, the formation of a big mantle wedge (BMW), and erosion by vigorous mantle convection. The model shows that subduction alone cannot thin the cold solid craton, but it can form a low-viscosity BMW. The amount of convective erosion is directly proportional to viscosity within the BMW (η 0bmw ), and the rheological boundary layer thins linearly with decreasing log 10 (η 0bmw ), thereby contributing to an increase in heat flow at the lithospheric base. This model also differs from previous modeling in that the increase in heat flow decays linearly with t 1/2 , meaning that the overall thinning closely follows a natural log relationship over time. Nevertheless, convection alone can only cause a limited thinning due to a minor increase in basal heat flow. The lowering of melting temperature by peridotite-melt interaction can accelerate thinning during the early stages of this convection. The two combined actions can thin the craton significantly over tens of Myr. This modeling, combined with magmatism and heat flow data, indicates that the NCC evolution has involved four distinct stages: modification in the Jurassic by Pacific Plate subduction and BMW formation, destruction during the Early Cretaceous under combined convective erosion and peridotite-melt interaction, extension in the Late Cretaceous, and cooling since the late Cenozoic.

show abstract

Thermo-tectonic destruction of the archaean lithospheric keel beneath the sino-korean craton in china: evidence, timing and mechanism

Cited by 780 publications

References 41 publications

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Magnetic mineralogy of pyroxenite xenoliths from Hannuoba basalts, northern North China Craton: Implications for magnetism in the continental lower crust

Numerical modeling of convective erosion and peridotite‐melt interaction in big mantle wedge: Implications for the destruction of the North China Craton

Contact Info

Product

Resources

About