Geochronological framework of the Xiadian gold deposit in the Jiaodong province, China: Implications for the timing of gold mineralization

Wei Dong Ma, Hong Rui Fan, Xuan Liu, Franco Pirajno, Fang Fang Hu, Kui Feng Yang, Yue Heng Yang, Wen Gang Xu, Peng Jiang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The Xiadian gold deposit, located in the Zhaoyuan–Laizhou belt of the Jiaodong gold province, is a typical Jiaojia-type gold deposit, which is characterized by disseminated and stockwork ores enclosed by hydrothermally altered wall rocks. The exact age and the genesis of the gold deposit remain controversial. Here, we present precise in-situ monazite U-Pb dating to constrain the age of the gold mineralization, which we integrate with published geochronological work on the associated geological events to understand the genesis of the gold deposit. The Linglong granite represents the earliest magmatic event at Xiadian, and yielded a zircon LA–ICPMS U-Pb age of 159.5 ± 0.9 Ma (2σ, MSWD = 0.63). Subsequent geologic events were recorded by minor amounts of quartz–pyrite–molybdenite veins which are dated at 124.8 ± 2.1 Ma (2σ, MSWD = 0.01) by molybdenite Re–Os dating in a granitic pegmatite. The formation of such veins was close to the emplacement of adjacent Guojialing granodiorite (~130 Ma), and thus may be considered as a product of post–magmatic hydrothermal activity. It is proposed that the molybdenum–bearing hydrothermal fluids acted as a prelude to gold mineralization and participated in the formation of the latter ore fluids. Gold mineralization took place at 120.0 ± 1.4 Ma (2σ, MSWD = 0.59), determined by LA–ICPMS U–Pb dating on hydrothermal monazite from quartz–polymetallic sulfide veins. Prior to and post mineralization, voluminous hydrothermally altered porphyritic diorite and fresh quartz diorite porphyry dykes were emplaced, which yielded U–Pb ages of 121.3 ± 1.4 Ma (2σ, MSWD = 0.28) and 115.8 ± 1.9 Ma (2σ, MSWD = 0.71), respectively. Based on these geochronological data, we have established a comprehensive geochronologic framework, which suggests that the genesis of the Xiadian deposit might be related to the craton destruction and lithosphere thinning in the North China Craton.

Original languageEnglish
Pages (from-to)196-211
Number of pages16
JournalOre Geology Reviews
Volume86
DOIs
Publication statusPublished - 1 Jun 2017

Fingerprint

Gold deposits
Gold
gold
mineralization
Ores
Wall rock
Quartz
Fluids
monazite
Sulfides
diorite
craton
molybdenite
province
hydrothermal activity
pegmatite
wall rock
hydrothermal fluid
porphyry
granodiorite

Cite this

Ma, Wei Dong ; Fan, Hong Rui ; Liu, Xuan ; Pirajno, Franco ; Hu, Fang Fang ; Yang, Kui Feng ; Yang, Yue Heng ; Xu, Wen Gang ; Jiang, Peng. / Geochronological framework of the Xiadian gold deposit in the Jiaodong province, China : Implications for the timing of gold mineralization. In: Ore Geology Reviews. 2017 ; Vol. 86. pp. 196-211.
@article{3e3277f3951244bd8c7e518160077460,
title = "Geochronological framework of the Xiadian gold deposit in the Jiaodong province, China: Implications for the timing of gold mineralization",
abstract = "The Xiadian gold deposit, located in the Zhaoyuan–Laizhou belt of the Jiaodong gold province, is a typical Jiaojia-type gold deposit, which is characterized by disseminated and stockwork ores enclosed by hydrothermally altered wall rocks. The exact age and the genesis of the gold deposit remain controversial. Here, we present precise in-situ monazite U-Pb dating to constrain the age of the gold mineralization, which we integrate with published geochronological work on the associated geological events to understand the genesis of the gold deposit. The Linglong granite represents the earliest magmatic event at Xiadian, and yielded a zircon LA–ICPMS U-Pb age of 159.5 ± 0.9 Ma (2σ, MSWD = 0.63). Subsequent geologic events were recorded by minor amounts of quartz–pyrite–molybdenite veins which are dated at 124.8 ± 2.1 Ma (2σ, MSWD = 0.01) by molybdenite Re–Os dating in a granitic pegmatite. The formation of such veins was close to the emplacement of adjacent Guojialing granodiorite (~130 Ma), and thus may be considered as a product of post–magmatic hydrothermal activity. It is proposed that the molybdenum–bearing hydrothermal fluids acted as a prelude to gold mineralization and participated in the formation of the latter ore fluids. Gold mineralization took place at 120.0 ± 1.4 Ma (2σ, MSWD = 0.59), determined by LA–ICPMS U–Pb dating on hydrothermal monazite from quartz–polymetallic sulfide veins. Prior to and post mineralization, voluminous hydrothermally altered porphyritic diorite and fresh quartz diorite porphyry dykes were emplaced, which yielded U–Pb ages of 121.3 ± 1.4 Ma (2σ, MSWD = 0.28) and 115.8 ± 1.9 Ma (2σ, MSWD = 0.71), respectively. Based on these geochronological data, we have established a comprehensive geochronologic framework, which suggests that the genesis of the Xiadian deposit might be related to the craton destruction and lithosphere thinning in the North China Craton.",
keywords = "Guojialing granodiorite, Jiaodong, Linglong granite, Molybdenite Re–Os dating, Monazite U–Pb geochronology, Xiadian gold deposit",
author = "Ma, {Wei Dong} and Fan, {Hong Rui} and Xuan Liu and Franco Pirajno and Hu, {Fang Fang} and Yang, {Kui Feng} and Yang, {Yue Heng} and Xu, {Wen Gang} and Peng Jiang",
year = "2017",
month = "6",
day = "1",
doi = "10.1016/j.oregeorev.2017.02.016",
language = "English",
volume = "86",
pages = "196--211",
journal = "Ore Geology Reviews",
issn = "0169-1368",
publisher = "Pergamon",

}

Geochronological framework of the Xiadian gold deposit in the Jiaodong province, China : Implications for the timing of gold mineralization. / Ma, Wei Dong; Fan, Hong Rui; Liu, Xuan; Pirajno, Franco; Hu, Fang Fang; Yang, Kui Feng; Yang, Yue Heng; Xu, Wen Gang; Jiang, Peng.

In: Ore Geology Reviews, Vol. 86, 01.06.2017, p. 196-211.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Geochronological framework of the Xiadian gold deposit in the Jiaodong province, China

T2 - Implications for the timing of gold mineralization

AU - Ma, Wei Dong

AU - Fan, Hong Rui

AU - Liu, Xuan

AU - Pirajno, Franco

AU - Hu, Fang Fang

AU - Yang, Kui Feng

AU - Yang, Yue Heng

AU - Xu, Wen Gang

AU - Jiang, Peng

PY - 2017/6/1

Y1 - 2017/6/1

N2 - The Xiadian gold deposit, located in the Zhaoyuan–Laizhou belt of the Jiaodong gold province, is a typical Jiaojia-type gold deposit, which is characterized by disseminated and stockwork ores enclosed by hydrothermally altered wall rocks. The exact age and the genesis of the gold deposit remain controversial. Here, we present precise in-situ monazite U-Pb dating to constrain the age of the gold mineralization, which we integrate with published geochronological work on the associated geological events to understand the genesis of the gold deposit. The Linglong granite represents the earliest magmatic event at Xiadian, and yielded a zircon LA–ICPMS U-Pb age of 159.5 ± 0.9 Ma (2σ, MSWD = 0.63). Subsequent geologic events were recorded by minor amounts of quartz–pyrite–molybdenite veins which are dated at 124.8 ± 2.1 Ma (2σ, MSWD = 0.01) by molybdenite Re–Os dating in a granitic pegmatite. The formation of such veins was close to the emplacement of adjacent Guojialing granodiorite (~130 Ma), and thus may be considered as a product of post–magmatic hydrothermal activity. It is proposed that the molybdenum–bearing hydrothermal fluids acted as a prelude to gold mineralization and participated in the formation of the latter ore fluids. Gold mineralization took place at 120.0 ± 1.4 Ma (2σ, MSWD = 0.59), determined by LA–ICPMS U–Pb dating on hydrothermal monazite from quartz–polymetallic sulfide veins. Prior to and post mineralization, voluminous hydrothermally altered porphyritic diorite and fresh quartz diorite porphyry dykes were emplaced, which yielded U–Pb ages of 121.3 ± 1.4 Ma (2σ, MSWD = 0.28) and 115.8 ± 1.9 Ma (2σ, MSWD = 0.71), respectively. Based on these geochronological data, we have established a comprehensive geochronologic framework, which suggests that the genesis of the Xiadian deposit might be related to the craton destruction and lithosphere thinning in the North China Craton.

AB - The Xiadian gold deposit, located in the Zhaoyuan–Laizhou belt of the Jiaodong gold province, is a typical Jiaojia-type gold deposit, which is characterized by disseminated and stockwork ores enclosed by hydrothermally altered wall rocks. The exact age and the genesis of the gold deposit remain controversial. Here, we present precise in-situ monazite U-Pb dating to constrain the age of the gold mineralization, which we integrate with published geochronological work on the associated geological events to understand the genesis of the gold deposit. The Linglong granite represents the earliest magmatic event at Xiadian, and yielded a zircon LA–ICPMS U-Pb age of 159.5 ± 0.9 Ma (2σ, MSWD = 0.63). Subsequent geologic events were recorded by minor amounts of quartz–pyrite–molybdenite veins which are dated at 124.8 ± 2.1 Ma (2σ, MSWD = 0.01) by molybdenite Re–Os dating in a granitic pegmatite. The formation of such veins was close to the emplacement of adjacent Guojialing granodiorite (~130 Ma), and thus may be considered as a product of post–magmatic hydrothermal activity. It is proposed that the molybdenum–bearing hydrothermal fluids acted as a prelude to gold mineralization and participated in the formation of the latter ore fluids. Gold mineralization took place at 120.0 ± 1.4 Ma (2σ, MSWD = 0.59), determined by LA–ICPMS U–Pb dating on hydrothermal monazite from quartz–polymetallic sulfide veins. Prior to and post mineralization, voluminous hydrothermally altered porphyritic diorite and fresh quartz diorite porphyry dykes were emplaced, which yielded U–Pb ages of 121.3 ± 1.4 Ma (2σ, MSWD = 0.28) and 115.8 ± 1.9 Ma (2σ, MSWD = 0.71), respectively. Based on these geochronological data, we have established a comprehensive geochronologic framework, which suggests that the genesis of the Xiadian deposit might be related to the craton destruction and lithosphere thinning in the North China Craton.

KW - Guojialing granodiorite

KW - Jiaodong

KW - Linglong granite

KW - Molybdenite Re–Os dating

KW - Monazite U–Pb geochronology

KW - Xiadian gold deposit

UR - http://www.scopus.com/inward/record.url?scp=85013627687&partnerID=8YFLogxK

U2 - 10.1016/j.oregeorev.2017.02.016

DO - 10.1016/j.oregeorev.2017.02.016

M3 - Article

VL - 86

SP - 196

EP - 211

JO - Ore Geology Reviews

JF - Ore Geology Reviews

SN - 0169-1368

ER -