The Paleozoic Huoshenmiao iron skarn deposit in the Tongbai area of North Qinling Orogen, China: Insights from garnet U-Pb dating and geological constraints

Two periods of magmatism in the Weishancheng ore concentration area, Henan Province: Evidences from zircon U‐Pb chronology, Hf isotopes and petrogeochemistry

“…Therefore, it can be considered that the mineralization of the Poshan silver deposit was influenced by Early Cretaceous magmatic activity, and the mineralization may be associated with the Liangwan pluton. The main evidence supporting this assertion includes the following points: (1) Regarding timing, the mineralization period of the Poshan silver deposit is 127-129 Ma (Chai, 2021;Chai et al, 2024;, slightly postdating the intrusion of the Liangwan pluton, indicating a postmagmatic mineralization phase; (2) Abundant lamprophyre veins are developed in the Poshan silver deposit, with intrusion ages (127-134 Ma) consistent with the mineralization age (Chai, 2021;Chai et al, 2024;Zhang et al, 2008). Their spatial alignment suggests a potential association with the Early Cretaceous magmatic events;…”

“…The relationship between magma and gold and silver mineralization in the Weishancheng ore concentration area has been a subject of considerable controversy in previous studies. The U-Pb geochronological results reveal that the intrusion ages of the two plutons are relatively close to the gold and silver metallogenic age (Chai, 2021;Chai et al, 2024;Gu, 2017;Li et al, 2023;Wang, 2014;Wang et al, 2016Wang et al, , 2017Zhang, 2021). S-Pb-H-O isotopes indicate that the magmatic intrusion exhibits a certain genesis relationship with gold and silver mineralization in this area, providing lead sources and mineralization materials for the mineralized zone (Chai, 2021;Chai et al, 2024;Li et al, 2009).…”

“…The U-Pb geochronological results reveal that the intrusion ages of the two plutons are relatively close to the gold and silver metallogenic age (Chai, 2021;Chai et al, 2024;Gu, 2017;Li et al, 2023;Wang, 2014;Wang et al, 2016Wang et al, , 2017Zhang, 2021). S-Pb-H-O isotopes indicate that the magmatic intrusion exhibits a certain genesis relationship with gold and silver mineralization in this area, providing lead sources and mineralization materials for the mineralized zone (Chai, 2021;Chai et al, 2024;Li et al, 2009). However, some scholars consider that the gold and silver ore-forming materials in the Weishancheng ore concentration area originate from the surrounding rock and are unrelated to the magma intrusion in the area (Jin, 2021;Zhang et al, 2009Zhang et al, , 2011Zhang et al, , 2013.…”

“…This suggests that there is no significant homologous relationship between the two (Jin, 2021;Li et al, 2009). The mineralization age of the gold and silver deposits in the Weishancheng ore concentration area can be roughly divided into two periods: the Early Cretaceous (119-130 Ma) and the Carboniferous Devonian (301-409 Ma) (Chai, 2021;Jiang, Nie, Fang, Liu, Zhang, et al, 2009;Li et al, 2023;Zhang et al, 2008Zhang et al, , 2013, which significantly postdate the intrusion age of the Taoyuan pluton. Therefore, the Taoyuan pluton cannot be considered as a source of energy or hydrothermal solution for gold and silver mineralization.…”

“…The Liangwan and Taoyuan plutons, two significant plutons in the northwest of the ore concentration area, are spatially adjacent to numerous large-and medium-sized silver polymetallic deposits, including the Poshan silver deposit, Yindongpo gold deposit and Yindongling silver polymetallic deposit (Zhang et al, 2008(Zhang et al, , 2009(Zhang et al, , 2011(Zhang et al, , 2013. Previous studies (Chai, 2021;Gu, 2017;Wang, 2014;Zhang, 2021) have investigated the intrusion age, petrogenesis and tectonic setting of the two plutons. However, prior research on the plutons in the Weishancheng ore concentration area has been limited to individual plutons, lacking systematic and comprehensive approaches.…”