The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements

doi:10.18654/1000-0569/2023.05.17

	The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements
	Wang MeiYun 1,2; Li He 1,3; Song MingChun 1,3; Zhang LiPeng 4,5; Tang ZongYuan 1; Ding Zhengjiang 6
	2023-05-01
发表期刊	ACTA PETROLOGICA SINICA
ISSN	1000-0569
卷号	39 期号:5 页码:1501-1515
通讯作者	Li He([email protected])
摘要	The Dadengge gold polymetallic deposit is located in the eastern part of the Jiaodong Peninsula, and is the only polymetallic deposit of gold, silver, lead, zinc and copper found in this area at present. Different from the famous Jiaodong gold concentration area, which is mainly located in the Jiaobei terrane on the southeastern margin of the North China Craton, the Dadengge deposit is located in the Weihai ultrahigh-pressure metamorphic belt at the easternmost end of the Sulu-Dabie orogenic belt. It is of great significance to accurately define the metallogenic age and source of ore-forming materials of the Dadengge deposit for further understanding the mineralization of different tectonic settings in the Mesozoic era in Jiaodong area. This paper selects pyrite in the main ore forming stage of the Dadengge gold polymetallic deposit to carry out Rb-Sr isotope dating and in-situ sulfur isotope and trace element analysis, so as to limit the regional metallogenic age, the source of metallogenic materials and the metallogenic mechanism. The results show that the Rb-Sr isotope isochron age of pyrite is 109.8 +/- 1.7Ma (MSWD = 1.4), which is consistent with the metallogenic age of the molybdenum, copper and other non-ferrous metal deposits in this region, and slightly later than the age of the large-scale gold deposit explosion in Jiaodong (similar to 120Ma). The sulfur isotope in the main mineralization stage is in the range of -1.20 parts per thousand similar to 6.65 parts per thousand. Pyrite is rich in thiophile elements such as Cu, Pb, Zn, Co, Ni, and the Co/Ni ratio is 0.03 similar to 1.36. The Dadengge gold polymetallic deposit is spatially located in the periphery of the Guzhuang unit of the Weideshan rock mass, and it's diagenetic and metallogenic ages are consistent, indicating that they have close genetic relations. According to comprehensive analysis, the Early Cretaceous mineralization in Jiaodong was controlled by the thermal uplift-extension tectonic environment related to the subduction of the ancient Pacific plate and the destruction of the North China Craton, and the eastward retreat of the subduction plate resulted in the difference of regional mineralization age between the west and the east.
关键词	Dadengge gold polymetallic deposit Pyrite Rb-Sr dating In-situ pyrite S isotope Metallogenic mechanism Jiaodong Peninsula
DOI	10.18654/1000-0569/2023.05.17
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000987256500017
出版者	SCIENCE PRESS
WOS关键词	CHINA ; PROVINCE ; GENESIS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/183087
专题	深海极端环境与生命过程研究中心
通讯作者	Li He
作者单位	1.Hebei Key Lab Strateg Crit Mineral Resources, Shijiazhuang 050031, Hebei, Peoples R China 2.Hebei GEO Univ, Sch Water Resources & Environm, Shijiazhuang 050031, Hebei, Peoples R China 3.Hebei GEO Univ, Coll Earth Sci, Shijiazhuang 050031, Hebei, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 5.Laoshan Lab, Lab Marine Geol, Qingdao 266237, Peoples R China 6.Shandong Prov 6 Explorat Inst Geol & Mineral Reso, Weihai 264209, Peoples R China
推荐引用方式 GB/T 7714	Wang MeiYun,Li He,Song MingChun,et al. The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements[J]. ACTA PETROLOGICA SINICA,2023,39(5):1501-1515.
APA	Wang MeiYun,Li He,Song MingChun,Zhang LiPeng,Tang ZongYuan,&Ding Zhengjiang.(2023).The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements.ACTA PETROLOGICA SINICA,39(5),1501-1515.
MLA	Wang MeiYun,et al."The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements".ACTA PETROLOGICA SINICA 39.5(2023):1501-1515.