Isotope and trace elemente geochemistry of mantle xenolith from Eastern Yangtze Craton: Implications for persistence and multistage evolution of subcontinental lithospheric mantle

1998 ◽  
Vol 43 (S1) ◽  
pp. 162-162
Author(s):  
X. C. Zhi ◽  
D. G. Chen ◽  
Z. C. Peng ◽  
W. D. Sun ◽  
Q. K. Xia
Keyword(s):  
Lithospheric Mantle ◽  
Mantle Xenolith ◽  
Subcontinental Lithospheric Mantle ◽  
Yangtze Craton

scholarly journals Highly siderophile elements mobility in the subcontinental lithospheric mantle beneath southern Patagonia

Lithos ◽  
2018 ◽  
Vol 314-315 ◽  
pp. 579-596 ◽  
Author(s):  
Santiago Tassara ◽  
José M. González-Jiménez ◽  
Martin Reich ◽  
Edward Saunders ◽  
Ambre Luguet ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Subcontinental Lithospheric Mantle ◽  
Highly Siderophile Elements ◽  
Southern Patagonia ◽  
Siderophile Elements

Quaternary sodic and potassic intraplate volcanism in northeast China controlled by the underlying heterogeneous lithospheric structures

Geology ◽  
2021 ◽  
Author(s):  
Xingli Fan ◽  
Qi-Fu Chen ◽  
Yinshuang Ai ◽  
Ling Chen ◽  
Mingming Jiang ◽  
...  
Keyword(s):  
Upper Mantle ◽  
Lithospheric Mantle ◽  
Northeast China ◽  
Velocity Structure ◽  
Seismic Velocity ◽  
Subcontinental Lithospheric Mantle ◽  
Seismic Velocities ◽  
S Wave ◽  
Crust And Upper Mantle ◽  
Potassic Volcanism

The origin and mantle dynamics of the Quaternary intraplate sodic and potassic volcanism in northeast China have long been intensely debated. We present a high-resolution, three-dimensional (3-D) crust and upper-mantle S-wave velocity (Vs) model of northeast China by combining ambient noise and earthquake two-plane wave tomography based on unprecedented regional dense seismic arrays. Our seismic images highlight a strong correlation between the basalt geochemistry and upper-mantle seismic velocity structure: Sodic volcanoes are all characterized by prominent low seismic velocities in the uppermost mantle, while potassic volcanoes still possess a normal but thin upper-mantle “lid” depicted by high seismic velocities. Combined with previous petrological and geochemical research findings, we propose that the rarely erupted Quaternary potassic volcanism in northeast China results from the interaction between asthenospheric low-degree melts and the overlying subcontinental lithospheric mantle. In contrast, the more widespread Quaternary sodic volcanism in this region is predominantly sourced from the upwelling asthenosphere without significant overprinting from the subcontinental lithospheric mantle.

Sign in / Sign up

Export Citation Format

Share Document