Timing and metal sources for carbonate-hosted Zn-Pb mineralization in the Franklinian Basin (North Greenland): Constraints from Rb-Sr and Pb isotopes

Rosa, Diogo R. N.; Schneider, Jens; Chiaradia, Massimo

doi:10.1016/j.oregeorev.2016.05.020

Cited by 21 publications

(6 citation statements)

References 57 publications

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“…For example, sphalerite may host Rb in its lattice preferentially than Sr and thus has high 87 Rb/ 86 Sr ratios, making the mineral suitable for precise radiogenic isotope dating. This method has been applied to hydrothermal deposits (e.g., Nakai et al ., ; Christensen et al ., , ; Petke and Diamond, ; Nelson et al ., ; Zhou et al ., ; Rosa et al, ). Single grain Rb‐Sr isotopic dating is also used for galena (e.g., Lange et al ., ) and pyrite (Han et al ., ; Li et al ., ).…”

Section: Introductionmentioning

confidence: 99%

The relationship between hydrocarbon accumulation and Mississippi Valley‐type Pb‐Zn mineralization of the Mayuan metallogenic belt, the northern Yangtze block, SW China: Evidence from ore geology and Rb‐Sr isotopic dating

et al. 2020

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The coexistence of Pb‐Zn deposits and oil/gas reservoirs demonstrates that a close genetic connection exists between them. The spatiotemporal relationship between Pb‐Zn mineralization and hydrocarbon accumulation is the key to understanding this genetic connection. The Mayuan large‐scale Pb‐Zn metallogenic belt is composed of a number of Mississippi Valley‐type (MVT) Pb‐Zn deposits that were recently discovered on the northern margin of the Yangtze Block, China. It is hosted in the dolostone of the Sinian (Ediacaran) Dengying Formation (Z2dn). In addition to the abundant bitumen in the Mayuan Pb‐Zn metallogenic belt, the paleo‐oil reservoir and the MVT Pb‐Zn deposit overlap in space. In this study, two precise ages of 468.3 ± 3.8 Ma and 206.0 ± 6.5 Ma were obtained via the Rb‐Sr isotopic dating of galena and sphalerite from the Mayuan Pb‐Zn metallogenic belt, respectively. The early metallogenic age of 468.3 ± 3.8 Ma is similar to the previously published age of 486 ± 12 Ma. The age of 206.0 ± 6.5 Ma is consistent with the age of the metallogenic event that occurred at 200 Ma in the Upper Yangtze Pb–Zn metallogenic province of the Sichuan‐Yunnan‐Guizhou polymetallic zone, which is located on the southwest margin of the Sichuan Basin, suggesting that the metallogenic effects of this period were regional in scale in the peripheral areas of the Sichuan Basin. Previous studies have shown that two periods of hydrocarbon accumulation occurred in the oil/gas reservoir that coexists with the Pb‐Zn deposits in the study area. The Pb‐Zn mineralization at 468.3 ± 3.8 Ma occurred during the first period of hydrocarbon accumulation, while the second mineralization at 206.0 ± 6.5 Ma occurred during the transformation of the paleo‐oil reservoir to a paleogas reservoir. The spatial relationship between the paleo‐oil/‐gas reservoir and the MVT Pb‐Zn deposits and the temporal relationship between mineralization and hydrocarbon accumulation show that a close genetic relationship exists between the MVT Pb‐Zn mineralization and hydrocarbon accumulation. Analysis of metals in the source rocks forming the paleo‐oil/‐gas reservoirs show that source rocks which formed paleo‐oil/‐gas reservoirs may have provided metals for Pb‐Zn mineralization. Both the paleo‐oil/‐gas reservoirs and Pb‐Zn mineralizing fluids had the same origin.

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Section: Introductionmentioning

confidence: 99%

The relationship between hydrocarbon accumulation and Mississippi Valley‐type Pb‐Zn mineralization of the Mayuan metallogenic belt, the northern Yangtze block, SW China: Evidence from ore geology and Rb‐Sr isotopic dating

et al. 2020

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“…Several Zn-Pb sulfide occurrences were reported in the trough sequence and the shelf-platform carbonate of the Franklinian Basin [3,5] (Figure 3). The trough sequence hosts clastic-dominated (CD) Zn-Pb deposits (referred to as sedimentary exhalative (SEDEX) deposits), while the carbonate-platform hosts Mississippi Valley-type (MVT) deposits, highly prospective for Zn-Pb sulfide ores [5]. Figure 2).…”

Section: Geological Setting Of the Franklinian Basinmentioning

confidence: 99%

“…Figure 2). The development of the basin divided into seven stages; (S) indicates shelf deposits and (T) trough deposits (modified from [3,5,27]). Table 1.…”

Section: Geological Setting Of the Franklinian Basinmentioning

confidence: 99%

“…The Franklinian Basin extends for more than 2500 km E-W over the Canadian Arctic Islands and northern Greenland ( Figure 2). Occurrences of clastic-dominated (CD) and Mississippi Valley-type (MVT) zinc-lead mineralization were reported in the trough sequences and shelf-platform carbonate of the Palaeozoic Franklinian Basin [5]. The Citronen Fjord Zn-Pb deposit [2,3]).…”

Section: Introductionmentioning

confidence: 99%

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Application of Multi-Sensor Satellite Data for Exploration of Zn–Pb Sulfide Mineralization in the Franklinian Basin, North Greenland

Pour

Park

et al. 2018

Remote Sensing

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Geological mapping and mineral exploration programs in the High Arctic have been naturally hindered by its remoteness and hostile climate conditions. The Franklinian Basin in North Greenland has a unique potential for exploration of world-class zinc deposits. In this research, multi-sensor remote sensing satellite data (e.g., Landsat-8, Phased Array L-band Synthetic Aperture Radar (PALSAR) and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)) were used for exploring zinc in the trough sequences and shelf-platform carbonate of the Franklinian Basin. A series of robust image processing algorithms was implemented for detecting spatial distribution of pixels/sub-pixels related to key alteration mineral assemblages and structural features that may represent potential undiscovered Zn–Pb deposits. Fusion of Directed Principal Component Analysis (DPCA) and Independent Component Analysis (ICA) was applied to some selected Landsat-8 mineral indices for mapping gossan, clay-rich zones and dolomitization. Major lineaments, intersections, curvilinear structures and sedimentary formations were traced by the application of Feature-oriented Principal Components Selection (FPCS) to cross-polarized backscatter PALSAR ratio images. Mixture Tuned Matched Filtering (MTMF) algorithm was applied to ASTER VNIR/SWIR bands for sub-pixel detection and classification of hematite, goethite, jarosite, alunite, gypsum, chalcedony, kaolinite, muscovite, chlorite, epidote, calcite and dolomite in the prospective targets. Using the remote sensing data and approaches, several high potential zones characterized by distinct alteration mineral assemblages and structural fabrics were identified that could represent undiscovered Zn–Pb sulfide deposits in the study area. This research establishes a straightforward/cost-effective multi-sensor satellite-based remote sensing approach for reconnaissance stages of mineral exploration in hardly accessible parts of the High Arctic environments.

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“…The Rb-Sr isotopic dating of ore sulfides represents a direct way to determine the hydrothermal mineralization age (Nakai et al, 1993;Nebel et al, 2011). With the advance of high-precision mass spectrometry with low detection limit, the technique is now widely applicable in dating hydrothermal minerals (Cao et al, 2015;Hu et al, 2015;Yang et al, 2017) such as sphalerite (Ostendorf et al, 2015;Rosa et al, 2016) and pyrite (Yang & Zhou, 2001;Han et al, 2007;Li et al, 2008;Wang et al, 2014c). The fact that 87 Sr/ 86 Sr ratios do not vary with 1/Sr values (Fig.…”

Section: Timing Of the Pb-zn Mineralizationmentioning

confidence: 99%

Genesis of Pb–Zn Mineralization Beneath the Xiangshan Uranium Orefield, South China: Constraints from H–O–S–Pb Isotopes and Rb–Sr Dating

Guo

Nie

et al. 2018

Resource Geology

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The volcanic‐hosted Xiangshan uranium orefield is the largest uranium deposit in South China. Recent exploration has discovered extensive Pb–Zn mineralization beneath the uranium orebodies. Detailed geological investigation reveals that the major metallic minerals include pyrite, sphalerite, galena, and chalcopyrite, whilst the major non‐metallic minerals include quartz, sericite, and calcite. New δ18Ofluid and δDfluid data indicate that the ore‐forming fluids were mainly derived from magmatic, and the sulfide δ34S values (2.2–6.9‰) suggest a dominantly magmatic sulfur source. The Pb isotope compositions are homogeneous (206Pb/204Pb = 18.120–18.233, 207Pb/204Pb = 15.575–15.698, and 208Pb/204Pb = 37.047–38.446). The 87Sr/86Sr ratios of sulfide minerals range from 0.7197 to 0.7204, which is much higher than volcanic rocks and fall into the range of metamorphic basement. Lead and strontium isotopic compositions indicate that the metallogenic materials probably were derived from metamorphic basement. Pyrite Rb–Sr dating of the ores yielded 131.3 ± 4.0 Ma, indicating that the Pb–Zn mineralization occurred in the Early Cretaceous.

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Timing and metal sources for carbonate-hosted Zn-Pb mineralization in the Franklinian Basin (North Greenland): Constraints from Rb-Sr and Pb isotopes

Cited by 21 publications

References 57 publications

The relationship between hydrocarbon accumulation and Mississippi Valley‐type Pb‐Zn mineralization of the Mayuan metallogenic belt, the northern Yangtze block, SW China: Evidence from ore geology and Rb‐Sr isotopic dating

The relationship between hydrocarbon accumulation and Mississippi Valley‐type Pb‐Zn mineralization of the Mayuan metallogenic belt, the northern Yangtze block, SW China: Evidence from ore geology and Rb‐Sr isotopic dating

Application of Multi-Sensor Satellite Data for Exploration of Zn–Pb Sulfide Mineralization in the Franklinian Basin, North Greenland

Genesis of Pb–Zn Mineralization Beneath the Xiangshan Uranium Orefield, South China: Constraints from H–O–S–Pb Isotopes and Rb–Sr Dating

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