Fluid evolution and large-scale gold metallogeny during Mesozoic tectonic transition in the Jiaodong Peninsula, eastern China

H. R. Fan*, F. F. Hu, J. H. Yang, M. G. Zhai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

36 Citations (Scopus)

Abstract

The Jiaodong Peninsula or eastern Shandong Province, the most important gold producing in region China, is located in the southeastern margin of the North China Craton. The gold deposits in the Jiaodong Peninsula are divided into three gold belts, from west to east, the Zhaoyuan-Laizhou, Penglai-Qixia and Muping-Rushan belts. The deposits occur as gold-bearing quartz veins and disseminated- and stockwork-style ores adjacent to fault zones. Most of the gold deposits can be classified in four stages: stage I, quartz-(minor) pyrite; stage II, pyrite-quartz-gold; stage III, quartz-base metal sulphide minerals; stage TV, quartz-carbonate. Ar-Ar ages, Rb-Sr isochrons, and hydrothermal zircon sensitive high-resolution ion microprobe U-Pb ages obtained from these deposits suggest a gold mineralization time of 120 ± 10 Ma. The Sr-Nd isotopic compositions of pyrites and the associated rocks suggest that the ore-forming materials were probably derived from a mixed source. Fluid inclusion studies show that ore-forming fluids of gold deposits are consistent throughout the Jiaodong Peninsula, with similar mineralizing temperature and pressure conditions. Ore-forming fluids are characterized by H2O-CO2-NaCl ± CH4. The optimal mineralizing temperature and pressure ranges are 170-335 °C and 0.7-2.5 kbar. Oxygen and hydrogen isotope data show that ore fluids are of magmatic origin. Gold deposits in the Jiaodong Peninsula formed in the same mineralizing-geodynamic conditions, and are related to the Mesozoic tectonic transition in the eastern North China Craton. Gold metallogeny is only one expression of the Mesozoic tectonic transition.

Original languageEnglish
Title of host publicationMesozoic sub-continental lithospheric thinning under eastern Asia
EditorsM Zhai, B Windley, T Kusky, Q Meng
Place of PublicationBath, UK
PublisherThe Geological Society Publishing House
Pages303-316
Number of pages14
Volume280
ISBN (Print)1862392250, 9781862392250
DOIs
Publication statusPublished - 2007
Externally publishedYes

Publication series

NameGeological Society Special Publication
Volume280
ISSN (Print)03058719

Fingerprint Dive into the research topics of 'Fluid evolution and large-scale gold metallogeny during Mesozoic tectonic transition in the Jiaodong Peninsula, eastern China'. Together they form a unique fingerprint.

  • Cite this

    Fan, H. R., Hu, F. F., Yang, J. H., & Zhai, M. G. (2007). Fluid evolution and large-scale gold metallogeny during Mesozoic tectonic transition in the Jiaodong Peninsula, eastern China. In M. Zhai, B. Windley, T. Kusky, & Q. Meng (Eds.), Mesozoic sub-continental lithospheric thinning under eastern Asia (Vol. 280, pp. 303-316). (Geological Society Special Publication; Vol. 280). Bath, UK: The Geological Society Publishing House. https://doi.org/10.1144/SP280.16