Hua bei ke la tong dong bu di ke he shang di man jie gou di jie shou han shu yan jiu

Translated title of the contribution: A Study on crustal and upper mantle structures in east part of North China Craton using receiver functions

Zhen Guo, You-Cai Tang, John Chen, Jie-Yuan Ning, Yong-Ge Feng, Han Yue

Research output: Contribution to journalArticle

Abstract

The P-wave and S-wave receiver function analysis has been performed along a profile which consists of 34 broadband seismographs to image the crustal and upper mantle structure in east part of North China Craton(NCC). The results reveal that the Moho interface lies at a depth of more than 30 km below the North China basin and shallows to less than 30 km in the West Shandong (Luxi) uplift which displays a dome-like shape. This Moho depth jump is roughly coincident with the transverse location of the Liaokao fault .An obvious uplift of the Moho is also detected below the Tanlu fault zone, which reflects that the fault may cut through the Moho under it. The lithosphere-asthenosphere boundary(LAB) is observed ~100 km beneath the Taihang orogenic belt and increases to ~60 km below the Luxi uplift. Farther eastward, it seems to be shallower beneath the Qingdao region .We also apply the slant-stack method to determine Poisson's ratio. The result shows rather uniform distribution of Poisson's ratio in the Luxi uplift. In contrast, it is much variable in the Qingdao region which is the north part of the Sulu-Dabie ultra-high-pressure metamorphic belt, implying a more complex evolution history.
Original languageChinese
Pages (from-to)3591-3600
Number of pages10
JournalChinese journal of geophysics
Volume55
Issue number11
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • North China Craton
  • Discontinuity of crust and upper mantle
  • S receiver function
  • LAB
  • Poisson's ratio
  • Luxi uplift
  • Sulu-Dabie ultra-high-pressure metamorphic belt

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