Fluid Inclusions and CHOSPb Isotopes: Implications for the Genesis of the Zhuanshanzi Gold Deposit on the Northern Margin of the North China Craton

2018 ◽  
Vol 69 (1) ◽  
pp. 1-21
Author(s):  
Zhenjun Sun ◽  
Zongqi Wang ◽  
Henan Yu ◽  
Chengyang Wang ◽  
Guanghu Liu ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Fluid Inclusions ◽  
North China Craton ◽  
North China ◽  
Pb Isotopes ◽  
Northern Margin ◽  
The North

scholarly journals Sources of metals and fluids for the Taijiying gold deposit on the northern margin of the North China Craton

2021 ◽  
pp. 104593
Author(s):  
Jian-Guo Yuan ◽  
Hua-Feng Zhang ◽  
Ying Tong ◽  
Jian-Feng Gao ◽  
Rong-Ge Xiao
Keyword(s):  
Gold Deposit ◽  
North China Craton ◽  
North China ◽  
Northern Margin ◽  
The North

New constraints on the genesis and geodynamic setting of the Wulong gold deposit, Liaodong Peninsula, northeast China: evidence from geology, geochemistry, fluid inclusions, and C–H–O–S–Pb isotopes

2020 ◽  
Vol 57 (3) ◽  
pp. 307-330 ◽  
Author(s):  
Xihui Cheng ◽  
Jiuhua Xu ◽  
Fuquan Yang ◽  
Guorui Zhang ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Fluid Inclusions ◽  
North China Craton ◽  
North China ◽  
Isotope Geochemistry ◽  
Liaoning Province ◽  
Geodynamic Setting ◽  
Main Stage ◽  
The North ◽  
Lode Gold Deposit

The Wulong lode gold deposit is located in the Liaoning Province, northeast part of North China Craton. Gold ore bodies are mainly hosted in the Late Jurassic granite and structurally controlled by northeast-trending faults. Gold occurs in disseminated and auriferous quartz–sulfide veins and veinlets within hydrothermally altered rocks. Mineralization can be divided into three stages: (1) quartz–pyrite stage, (2) quartz–polymetallic sulfides stage, and (3) quartz–carbonate stage. Gold formed mainly in the middle stage. Quartz formed in the two earlier stages contains three compositional types of fluid inclusions, i.e., pure CO2, CO2–H2O and NaCl–H2O, but the late-stage minerals only contain NaCl–H2O inclusions. The inclusions in quartz formed in the early, main, and late stages yield total homogenization temperatures of 317–383 °C, 260–380 °C and 159–234 °C, respectively, with salinities of 5.14–9.44, 2.95–6.20, 1.23–4.34 wt% NaCl equivalent, respectively. Trapping pressures estimated from CO2–H2O inclusions are 200–390 MPa in the main stage. Fluid boiling and immiscibility caused rapid precipitation of sulfides and gold. Through immiscibility and inflow of meteoric water, the ore-forming fluid system evolved from CO2-rich to CO2-poor in composition, and from magmatic to meteoric, as indicated by δ18Owater values (4.5‰–7.3‰). The carbon (−12.2‰ to −11.5‰), sulfur (0.9‰–2.6‰), and lead isotope (207Pb/204Pb of 15.606–15.618) compositions suggest the host rocks to be a significant source of ore metals. Integrating the data obtained from the studies including regional geology, ore geology, fluid inclusion, and C–H–O–S–Pb isotope geochemistry, we conclude that the Wulong deposit is a decratonization gold deposit formed during lithospheric thinning associated with destruction of the North China Craton triggered by the subduction of the Paleo-Pacific Oceanic plate in the Early Cretaceous.

Gold mineralization in Proterozoic black shales: Example from the Haoyaoerhudong gold deposit, northern margin of the North China Craton

2014 ◽  
Vol 63 ◽  
pp. 150-159 ◽  
Author(s):  
Jianping Wang ◽  
Jiajun Liu ◽  
Runmin Peng ◽  
Zhenjiang Liu ◽  
Baisheng Zhao ◽  
...  
Keyword(s):  
Gold Deposit ◽  
North China Craton ◽  
North China ◽  
Gold Mineralization ◽  
Black Shales ◽  
Northern Margin ◽  
The North

scholarly journals Geology, Geochemistry, and Geochronology of Gabbro from the Haoyaoerhudong Gold Deposit, Northern Margin of the North China Craton

Minerals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 63 ◽  
Author(s):  
Jianping Wang ◽  
Xiu Wang ◽  
Jiajun Liu ◽  
Zhenjiang Liu ◽  
Degao Zhai ◽  
...  
Keyword(s):  
Gold Deposit ◽  
North China Craton ◽  
North China ◽  
Geochemical Data ◽  
Northern Margin ◽  
The North ◽  
Slab Dehydration ◽  
Shrimp Zircon ◽  
Light Rare Earth Elements ◽  
Extensional Setting

The Haoyaoerhudong gabbro is a mafic intrusion located in the Haoyaoerhudong gold deposit, which is a giant gold deposit (148 t Au) hosted in Proterozoic strata on the northern margin of the North China Craton. In this paper, we present integrated SHRIMP U–Pb, geochemical and Sr–Nd isotopic data from gabbro of the Haoyaoerhudong gold deposit to reveal the magmatic processes behind its origin. SHRIMP zircon U–Pb dating constrains the timing of crystallization of the Haoyaoerhudong gabbro to 278.8 ± 0.81 Ma. Whole-rock geochemical results indicate that the Haoyaoerhudong gabbro has calc-alkaline features with enrichments of large-ion lithophile elements (LILE) and light rare-earth elements (REE) as well as depletions of high-field strength elements (HFSE). The relatively high (87Sr/86Sr)i (0.7053 to 0.7078) and low εNd(t) (−4.6 to −15.1) values of the gabbro indicate the involvement of crustal materials. Low Ce/Pb ratios (1.35 to 7.38), together with nearly constant La/Sm and Th/Yb ratios and variable Ba/Th and Sr/Nd ratios, suggest that the ancient mantle was modified by slab dehydration fluids. Based on new geochemical data and regional geological investigations, we propose that both the Haoyaoerhudong gold deposit and the Haoyaoerhudong gabbro formed in a post-orogenic extensional setting.

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