Deformation model for the Tongling ore cluster region,east-central China

Wang, Qingfei; Deng, Jun; Huang, Dongmei; Xiao, Changhao; Yang, Liqiang; Wang, Yanru

doi:10.1080/00206814.2010.496236

Cited by 24 publications

(11 citation statements)

References 27 publications

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“…In previous studies, faults have been proven to act as favorable pathways for transporting ore-related magma and ore-forming fluids from deep sources to shallow trap zones, resulting in a strong association of these faults with hydrothermal mineral deposits [10,16,19]. In the study area, the petrological data and geophysical profiles evidence that a magma chamber was developed in the Mesozoic at about −10 km from the surface [42]. The EW-trending basement faults are interpreted to play a vital role of channeling the magma from the magma chamber to the shallow trap zones during the Yanshanian period.…”

Section: Interpretation Of Structural Controls On Copper Mineralizationmentioning

confidence: 76%

“…The copper occurrences (including known deposits and prospects) and structural features employed in this study were derived from Geological Database of Bureau of Geological and Mineral Resources of Anhui Province based on 1:50,000 geological survey and complemented by the literature available for the study area concerning regional geological settings [26,42,45,49,51]. The raw data were examined before being inputted into a spatial database.…”

Section: Study Areamentioning

confidence: 99%

“…In the Punta del Cobre district in Chile, the stratabound tabular orebodies occur in the andesite breccia horizons between underlying massive andesite and overlying shale, while the sites of economic copper concentration appear to be controlled by faults [41]. Since structure is an important controlling factor of these stratabound deposits, some relevant studies have been conducted in the TOD, including the spatial patterns [34], deformation model [42] and formative process [43] of ore-controlling structures. However, these studies mostly focus on theoretical deduction and qualitative analysis, and lack quantitative analysis concerning detailed structural features.…”

Section: Introductionmentioning

confidence: 99%

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Structural Controls on Copper Mineralization in the Tongling Ore District, Eastern China: Evidence from Spatial Analysis

Sun

et al. 2018

Minerals

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Structures exert significant controls on hydrothermal mineralization, although such controls commonly have cryptic expression in geological datasets dominated by 2D maps. Analysis of spatial patterns of mineral deposits and quantification of their correlation with detailed structural features are beneficial to understand the plausible structural controls on mineralization. In this paper, a series of GIS-based spatial methods, including fractal, Fry, distance distribution and weights-of-evidence analyses, were employed to reveal structural controls on copper mineralization in the Tongling ore district, eastern China. The results indicate that Yanshanian intrusions exert the most significant control on copper mineralization, followed by EW-trending faults, intersections of basement faults and folds. The scale-variable distribution patterns of copper occurrences are attributed to the different structural controls operating in the basement and sedimentary cover. In the basement, EW-trending faults serve as pathways for channeling Yanshanian magma from a deep magma chamber to structurally controlled trap zones in the caprocks, imposing an important regional control on the spatial distribution of Cretaceous magmatic-hydrothermal system genetically related to copper mineralization. In the sedimentary cover, bedding-parallel shear zones, formed during the progressive folding and shearing in Indosinian and overprinted by tensional deformation in Yanshanian, act as favorable sites for hosting, focusing and depositing the ore-bearing fluids, playing a vital role in the localization of stratabound deposits at fine scale.

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Section: Interpretation Of Structural Controls On Copper Mineralizationmentioning

confidence: 76%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Controls on Copper Mineralization in the Tongling Ore District, Eastern China: Evidence from Spatial Analysis

Sun

et al. 2018

Minerals

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“…Wang et al, 2008Wang et al, , 2010Wang et al, , 2011aZuo et al, 2009aZuo et al, , 2012. Of possible fractal models, the number-size model is the most popular and widely applied in analyses of elemental distributions in ore deposits (e.g., Deng et al, 2009;Q.F. Wang et al, 2011e).…”

Section: Accepted Manuscriptmentioning

confidence: 98%

Correlation between mineralization intensity and fluid–rock reaction in the Xinli gold deposit, Jiaodong Peninsula, China: Constraints from petrographic and statistical approaches

Yang

Wang

Liu

2015

Ore Geology Reviews

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“…The Tongling district is dominated by a series of NE-trending S-shaped folds with flexural slip within the limbs ( Fig. 1b) (Deng et al, 2004(Deng et al, , 2005Wang et al, 2011). More than 70 intermediate-acid magmatic intrusions are distributed in this district, from the east to the west, to compose an approximately 25 km tectono-magmatic belt (Wang et al, 2003;Deng et al, 2007).…”

Section: Regional Geologymentioning

confidence: 99%

Geological and Geochemical Characteristics of the Huangshilao Stratabound Gold Deposit in the Tongguanshan Orefield, Tongling, East‐Central China

Wang

et al. 2013

Resource Geology

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The Huangshilao gold deposit (>13.5 t Au) is comprised of stratabound pyrite-dominant massive sulfide ores, and is distinguished from the skarn Cu, Au, and Cu-Au deposits that are dominant in the Tongguanshan orefield, Tongling, east-central China. The stratabound orebodies are situated along flexural slip faults along the unconformity between the Upper Devonian Wutong and the Upper Carboniferous Huanglong Formations. The ores, dominated by crystallized pyrite, colloform pyrite, and pyrrhotite, are systematically sampled from the underground stopes along strike drifts. Keywords: Huangshilao, stratabound, sulfur isotope, Tongguanshan, Tongling. IntroductionThe Huangshilao stratabound gold deposit is located in the Tongling ore district in the Middle-Lower Yangtze River metallogenic belt, east-central China (Fig. 1). The belt, extending from Wuhan in the eastern Hubei Province in the west to Zhenjiang in the southern Jiangsu Province in the east, is a well-known Cu-Mo-Au-Fe polymetallic belt and contains more than 200 major polymetallic (Cu-Fe-Au, Mo, Zn, Pb and Ag) deposits (Chang et al., 1991;Zhai et al., 1992;Pan & Dong, 1999). The Tongling district mainly contains skarn, porphyry and stratabound deposits Mao et al., 2011 et al., 2011). However, the genesis of the stratabound deposits, e.g., Xinqiao, Dongguashan, Datuanshan, Shimenkou, Laoyaling, and Huangshilao, within the Neopaleozoic-Mesozoic sedimentary rocks has remained controversial for decades. Some researchers have suggested that the stratabound deposits formed through replacement of carbonate rocks by magmatic fluids differentiated from the Yanshanian intrusions, which is supported by geochemical data (Pan & Dong, 1999). Copper isotopes of chalcopyrite from the stratabound Cu-Au-Mo orebodies in the Dongguashan deposit indicate that the Cu is derived from the Yanshanian granitic intrusions (Huang et al., 2003;Lu et al., 2003Lu et al., , 2008. Molybdenite Re-Os isotope geochemistry also denotes that the Datuanshan stratabound Cu orebodies are the result of magmatic hydrothermal replacement (Mao et al., 2006). Some researchers, however, have suggested a synsedimentary-exhalative model based on the syngenetic sedimentary morphologies of the orebodies with banded, laminated and carbonate mud mound structure, and the presence of colloform and framboidal pyrite in some localities (Xu et al., 1982;Gu & Xu, 1986;Li, 1989;Yue et al., 1993;Gu et al., 2007;Jiang et al., 2011). A pyrite Re-Os emplacement age of 303 Ϯ 33 Ma of the Shimenkou bedded pyrite orebody is similar to the Carboniferous host rock and much earlier than the Yanshanian granitoids . The Upper Permian black shale from the Laoyaling Mo orebody has been dated to 234.2 Ϯ 7.3 Ma by the Re-Os technique, which is much earlier than the Yanshanian intrusions and younger than the Permian host rock, suggesting that the Mo ore is sedimentary in origin with later hydrothermal disturbance . The latest Re-Os isotope

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Deformation model for the Tongling ore cluster region,east-central China

Cited by 24 publications

References 27 publications

Structural Controls on Copper Mineralization in the Tongling Ore District, Eastern China: Evidence from Spatial Analysis

Structural Controls on Copper Mineralization in the Tongling Ore District, Eastern China: Evidence from Spatial Analysis

Correlation between mineralization intensity and fluid–rock reaction in the Xinli gold deposit, Jiaodong Peninsula, China: Constraints from petrographic and statistical approaches

Geological and Geochemical Characteristics of the Huangshilao Stratabound Gold Deposit in the Tongguanshan Orefield, Tongling, East‐Central China

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