Pb Isotope Study of Some Nonferrous Metallic Deposits in China

Autor:	Li Heng, Pang Chunyong, Chen Minyang, XU Wenxin
Rok vydání:	2010
Předmět:	Isochron Mineralization (geology) Proterozoic Archean Geochemistry chemistry.chemical_element Mineralogy Geology Copper Metal Precambrian chemistry visual_art visual_art.visual_art_medium Mesozoic
Zdroj:	Acta Geologica Sinica - English Edition. 74:316-320
ISSN:	1000-9515
DOI:	10.1111/j.1755-6724.2000.tb00468.x
Popis:	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.
Databáze:	OpenAIRE
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