Archean relic body at lower crust in Sulu area: Evidence from magnetic data

Qifan Wu*, Fengxiang Lu, Qingsheng Liu, Jianping Zheng, Maoji Wang, Wenli Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

After the new 1:1000000 aero magnetic data were processed and the three-dimensional inversion work was carried out, a vast high magnetic body northwestward was discovered. The magnetic body is located at the depth of about 20 km on the west side of Tanlu fault and at about 25 km on the cast side of Tanlu fault beneath the Sulu area. There is a difference of vertical distance of 3-5 km in depth between both sides. We think that the magnetic body is an Archean metamorphic plate and belongs to the North China block. The discovery of the magnetic body is significant for us to reconstruct the structure model of the Sulu erogenic belt, delineate the suture of collision between the North China block and the Yangtze block, and estimate the depth of slipping surface when the eastside of Tanlu fault moved northward.

Original languageEnglish
Pages (from-to)589-593
Number of pages5
JournalChinese Science Bulletin
Volume48
Issue number6
DOIs
Publication statusPublished - 2003
Externally publishedYes

Keywords

  • Geophysical survey
  • Regional magnetic field
  • Sulu orogenic belt
  • Tanlu fault
  • Three-dimensional inversion

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