Identification of Mesoproterozoic zircons in a Triassic dolerite from the Liaodong Peninsula, Northeast China

Jinhui Yang*, Fuyuan Wu, Yanbin Zhang, Qi Zhang, Simon A. Wilde

*Corresponding author for this work

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Thick Neoproterozoic strata are widespread in the Dalian region, Liaodong Peninsula, Northeast China. SHRIMP zircon U-Pb dating of dolerite intruded into Neoproterozoic strata gives its emplacement age as 211±2 Ma. However, abundant 0.9-1.1 Ga zircons are identified in the dolerite. The age of 1125±38 Ma corresponds with the Grenvillian collisional event. The zircons of 904±15 Ma ages have high Th/U ratios (1.31-2.25) and magmatic oscillatory zones, being possibly related to later magmatism induced during amalgamation of Rodinia.

Original languageEnglish
Pages (from-to)1958-1962
Number of pages5
JournalChinese Science Bulletin
Volume49
Issue number18
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • Dolerite
  • Grenvillian Rodinia
  • Liaodong Peninsula
  • SHRIMP zircon U-Pb age

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