Premium
Pb Isotope Study of Some Nonferrous Metallic Deposits in China
Author(s) -
Wenxin XU,
Minyang CHEN,
Chunyong PANG,
Heng LI
Publication year - 2000
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.2000.tb00468.x
Subject(s) - isochron , precambrian , mineralization (soil science) , geology , proterozoic , geochemistry , archean , mesozoic , isotope , copper , paleontology , metallurgy , materials science , structural basin , quantum mechanics , soil science , soil water , tectonics , physics
Based on Pb‐Pb isochron data of more than 40 Precambrian polymetallic deposits, the authors consider that there are four mineralization periods for the Precambrian copper deposits in China, and the major copper deposits were formed at about 1800 Ma; there are three mineralization periods for gold deposits formed from Archaean to Proterozoic. By studying hundreds of lead isotope data from some Mesozoic continental subvolcanic Cu and Ag polymetallic deposits and fine‐disseminated gold deposits, the authors found that the calculation based on the lead single‐stage evolution model or two‐stage evolution model cannot give the true ore‐forming ages but can provide more information about mineralization and material sources of the deposits.