Gold and sulfur sources of the Taipingdong Carlin-type gold deposit: Constraints from simultaneous determination of sulfur isotopes and trace elements in pyrite using nanoscale secondary ion mass spectroscopy

•Zoned pyrite is a recorder of ore-forming fluid activities and ore formation progresses.•EPMA and NanoSIMS elemental mappings show episodic ore-forming fluid activities.•Profile analyses show that the composition variation of ore fluid displayed as pulse manner.•Decoupling of As and Au implies high Cu in ore fluid inhibits its Au-carrying capability.•The narrow S isotope range of −5−+5‰ with geophysical evidences imply a magmatic origin for the Au deposits.