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Journal articles on the topic 'Carbonate U-Pb dating'

Author: Grafiati

Published: 25 May 2024

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1

Tartèse, Romain, and Ian C. Lyon. "In situ U–Pb dating of 4 billion-year-old carbonates in the martian meteorite Allan Hills 84001." Geochronology 4, no. 2 (2022): 683–90. http://dx.doi.org/10.5194/gchron-4-683-2022.

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Abstract. In situ carbonate U–Pb dating studies have proliferated dramatically in recent years. Almost all these studies have targeted relatively young terrestrial calcite up to Carboniferous in age. To assess the robustness of the carbonate U–Pb chronometer in deep time, we carried out in situ U–Pb analyses in magnesite–ankerite–calcite carbonates in the martian meteorite Allan Hills (ALH) 84001. Carbonates in ALH 84001 formed at ca. 3.94 Ga, and there is little evidence that much happened to this rock since then, making it an ideal sample to test the robustness of the U–Pb system in old carb

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2

Roberts, Nick M. W., Kerstin Drost, Matthew S. A. Horstwood, et al. "Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb carbonate geochronology: strategies, progress, and limitations." Geochronology 2, no. 1 (2020): 33–61. http://dx.doi.org/10.5194/gchron-2-33-2020.

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Abstract. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb geochronology of carbonate minerals, calcite in particular, is rapidly gaining popularity as an absolute dating method. The high spatial resolution of LA-ICP-MS U–Pb carbonate geochronology has benefits over traditional isotope dilution methods, particularly for diagenetic and hydrothermal calcite, because uranium and lead are heterogeneously distributed on the sub-millimetre scale. At the same time, this can provide limitations to the method, as locating zones of radiogenic lead can be time-consuming and “h

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3

Beranoaguirre, Aratz, Iuliana Vasiliev, and Axel Gerdes. "In situ LA-ICPMS U–Pb dating of sulfates: applicability of carbonate reference materials as matrix-matched standards." Geochronology 4, no. 2 (2022): 601–16. http://dx.doi.org/10.5194/gchron-4-601-2022.

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Abstract. Recent developments in analytical capabilities in the field of in situ laser ablation mass spectrometry (LA-ICPMS) have expanded the applications of U–Pb geochronometers in low-U minerals such as carbonates or garnets. The rapid evolution of the technique relies on well-characterized matrix-matched reference materials. In this article, we explore the suitability of using carbonate as an “almost-matrix-matched reference material” for in situ U–Pb dating of sulfates. For such purpose, we have used the astrochronologically dated gypsum and anhydrite samples deposited during the Messinia

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4

Rasbury, E. Troy, Theodore M. Present, Paul Northrup, et al. "Tools for uranium characterization in carbonate samples: case studies of natural U–Pb geochronology reference materials." Geochronology 3, no. 1 (2021): 103–22. http://dx.doi.org/10.5194/gchron-3-103-2021.

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Abstract. Laser ablation U–Pb analyses of carbonate (LAcarb) samples has greatly expanded the potential for U–Pb dating to a variety of carbonate-producing settings. Carbonates that were previously considered impossible to date using isotope dilution methods may preserve radiogenic domains that can be dated using spatially resolved laser ablation geochronology techniques. Work is ongoing to identify reference materials and to consider best practices for LAcarb. In this study we apply standard and emerging characterization tool sets on three natural samples with the dual goal of enhancing the s

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5

Winter, Bryce L., and Clark M. Johnson. "UPb dating of a carbonate subaerial exposure event." Earth and Planetary Science Letters 131, no. 3-4 (1995): 177–87. http://dx.doi.org/10.1016/0012-821x(95)00026-9.

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6

Vetrova, N. I., E. V. Vetrov та E. F. Letnikova. "СHEMOSTRATIGRAPHY OF THE CARBONATE DEPOSITS OF THE KINTEREP FORMATION IN NORTHWESTERN SALAIR: FIRST DATA". Geology and mineral resources of Siberia, № 2 (червень 2022): 10–23. http://dx.doi.org/10.20403/2078-0575-2022-2-10-23.

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The results of geochemical, isotope-geochemical (Sr, C, O) surveys of the Kinterep Formation carbonate deposits of Northwestern Salair and U-Pb dating (LA-ICP-MS) of zircons were given. Carbonate rocks represented by pure limestones are characterized by normal values of δ18OSMOW from 19.8 to 23.8 ‰ and δ13 CPDB from –0.7 to +0.9, the isotopic composition of Sr (87Sr/86Sr ratio) varies in a narrow range from 0.708486 to 0.708582.Using Sr and C isotope chemostratigraphy and U-Pb dating of zircons, age limits (525-510 Ma) were determined for the formation time of carbonate deposits of the Kintere

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7

Woodhead, Jon, and Joseph Petrus. "Exploring the advantages and limitations of in situ U–Pb carbonate geochronology using speleothems." Geochronology 1, no. 1 (2019): 69–84. http://dx.doi.org/10.5194/gchron-1-69-2019.

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Abstract. The recent development of methods for in situ U–Pb age determination in carbonates has found widespread application, but the benefits and limitations of the method over bulk analysis (isotope dilution – ID) approaches have yet to be fully explored. Here we use speleothems – cave carbonates such as stalagmites and flowstones – to investigate the utility of in situ dating methodologies for “challenging” matrices with typically low U and Pb contents and predominantly late Cenozoic ages. Using samples for which ID data have already been published, we show that accurate ages can be obtain

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8

Letnikova, E. F., A. A. Zhdanov, A. V. Ivanov, et al. "Sr-ISOTOPIC COMPOSITION OF PALEOOCEAN WATER ON THE BORDER OF 960 Ma (DATA FOR NIZHNY TUNGUSKA FORMATION OF TURUKHAN UPLIFT OF SIBERIAN PLATFORM)." Доклады Российской академии наук. Науки о Земле 513, no. 1 (2023): 66–76. http://dx.doi.org/10.31857/s2686739723600960.

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At the boundary of the Meso- and Neoproterozoic, Grenville collision events were widely manifested on the margins of ancient continental blocks. Most of the sedimentary sequences that had accumulated by that time had undergone significant thermal–metamorphic changes. In many ways, this is the main reason for the lack of isotopic data for carbonate deposits in the interval of 1200–900 Ma in world practice. Sr–isotopic composition in carbonate rocks with an age of 980–920 Ma was determined in the only section of the World – the Huainan Formation of the North China Platform with accumulation time

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9

Wei, Zhenquan, Jinfeng Ma, Gaowen He, Lifeng Zhong, Limin Zhang, and Bin Zhao. "Laser In Situ U–Pb Isotope Dating of Carbonate Rocks in Weijia Guyot in the Western Pacific Ocean and Its Geological Significance." Journal of Marine Science and Engineering 12, no. 5 (2024): 737. http://dx.doi.org/10.3390/jmse12050737.

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Shallow-water carbonate rocks constitute a crucial component of large guyots, arising in distinct environments and harboring valuable insights into the evolutionary stages of seamount islands as well as the tectonic conditions of the underlying oceanic plate. Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrometry (LA-MC-ICP-MS) was used to conduct in situ U–Pb isotope dating of carbonate minerals with low uranium content collected from Weijia Guyot. This dating approach yielded crucial evidence for the vertical development of the seamount. Our study indicates that shallow-

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10

Drost, Kerstin, David Chew, Joseph A. Petrus, et al. "An Image Mapping Approach to U-Pb LA-ICP-MS Carbonate Dating and Applications to Direct Dating of Carbonate Sedimentation." Geochemistry, Geophysics, Geosystems 19, no. 12 (2018): 4631–48. http://dx.doi.org/10.1029/2018gc007850.

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11

Lenoir, Louise, Thomas Blaise, Andréa Somogyi, et al. "Uranium incorporation in fluorite and exploration of U–Pb dating." Geochronology 3, no. 1 (2021): 199–227. http://dx.doi.org/10.5194/gchron-3-199-2021.

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Abstract. The age of ore deposits constitutes a decisive element in understanding their formation. Deciphering their precise chronology may be a challenge in the absence of mineral phases that can be dated by conventional geochronometers. Fluorite is very common either as the major or accessory mineral in a wide variety of ores and may provide information regarding the origin and timing of mineralizing fluid flows. In this contribution, we explore U–Pb dating on fluorite crystals from the world-class carbonate strata-bound fluorite ore of Pierre-Perthuis in Burgundy (Morvan massif, France). Th

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12

Engel, John, Roland Maas, Jon Woodhead, Jan Tympel, and Alan Greig. "A single-column extraction chemistry for isotope dilution U-Pb dating of carbonate." Chemical Geology 531 (January 2020): 119311. http://dx.doi.org/10.1016/j.chemgeo.2019.119311.

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13

Nuriel, Perach, Jörn-Frederik Wotzlaw, Maria Ovtcharova, et al. "The use of ASH-15 flowstone as a matrix-matched reference material for laser-ablation U − Pb geochronology of calcite." Geochronology 3, no. 1 (2021): 35–47. http://dx.doi.org/10.5194/gchron-3-35-2021.

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Abstract. Latest advances in laser ablation inductively coupled plasma mass spectrometer (LA-ICPMS) allow for accurate in situ U−Pb dating of carbonate material, with final age uncertainties usually >3 % 2σ. Cross-laboratory reference materials (RMs) used for sample-bracketing are currently limited to WC1 calcite with an age of 254.4±6.5 (2σ). The minimum uncertainty on any age determination with the LA-ICPMS method is therefore ≥2.5 %, and validation by secondary RMs is usually performed on in-house standards. This contribution presents a new reference material, ASH-15, a flowstone that is

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14

Davis, D. W., C. N. Sutcliffe, A. M. Thibodeau, et al. "Hydrochronology of a proposed deep geological repository for low- and intermediate-level nuclear waste in southern Ontario from U–Pb dating of secondary minerals: response to Silurian and Cretaceous events." Canadian Journal of Earth Sciences 57, no. 4 (2020): 464–76. http://dx.doi.org/10.1139/cjes-2019-0004.

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A record of fluid flow has been documented within a Paleozoic carbonate platform sequence by U–Pb dating of calcite in veins and vugs from rock core sampled through a shallowly dipping sequence of sedimentary rocks beneath the Bruce nuclear site, Ontario, Canada. Secondary calcite from >650 m deep Ordovician carbonate rocks yields a Silurian age of 434 ± 5 Ma possibly related to infiltration of seawater from overlying evaporitic basins as well as hydrothermal solutions that infiltrated from below. In contrast, near-surface Devonian rocks mostly give vein infill ages over the range of 80–100

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15

Kaurova, O. K., G. V. Ovchinnikova, and I. M. Gorokhov. "U-Th-Pb systematics of precambrian carbonate rocks: Dating of the formation and transformation of carbonate sediments." Stratigraphy and Geological Correlation 18, no. 3 (2010): 252–68. http://dx.doi.org/10.1134/s0869593810030032.

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16

Bonev, Nikolay, Petyo Filipov, Raya Raicheva, Massimo Chiaradia, and Robert Moritz. "Detrital zircon age and Sr isotopic constraints for a Late Palaeozoic carbonate platform in the lower Rhodope thrust system, Pirin, SW Bulgaria." Geological Magazine 156, no. 12 (2019): 2117–24. http://dx.doi.org/10.1017/s0016756819001183.

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AbstractWe focused on the Pirin–Pangeon–Thasos carbonate sequence of the Rhodope thrust system, combining Sr isotopes from marble with U–Pb dating of detrital zircons from interlayered schists with outcrop near the villages of Ilindentsi and Petrovo in Bulgaria. The youngest zircon age at Ilindentsi is 266 Ma, i.e. Middle Permian, while the youngest zircon at Petrovo yielded an age of 290 Ma, i.e. Early Permian. Strontium isotopes range from 0.707420 to 0.707653, and are consistent with a Middle Permian maximum depositional age. Middle Permian sedimentation of this carbonate platform most like

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17

Mottram, C. M., D. A. Kellett, T. Barresi, et al. "Syncing fault rock clocks: Direct comparison of U-Pb carbonate and K-Ar illite fault dating methods." Geology 48, no. 12 (2020): 1179–83. http://dx.doi.org/10.1130/g47778.1.

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Abstract The timing of slip on brittle faults in Earth’s upper crust is difficult to constrain, and direct radiometric dating of fault-generated materials is the most explicit approach. Here we make a direct comparison between K-Ar dating of fault gouge clay (authigenic illite) and U-Pb dating of carbonate slickenfibers and veins from the same fault. We have dated fault generated materials from the Big Creek fault, a northwest-striking, dextral strike-slip fault system in Yukon Territory, Canadian Cordillera. Both methods yielded dates at ca. 73 Ma and ca. 60–57 Ma, representing at least two p

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18

Kim, Ha, Seongsik Hong, Chaewon Park, Jihye Oh, Jonguk Kim, and Yungoo Song. "Principle and Application of 'Image-mapping' in-situ U-Pb Carbonate Age-dating." Economic and Environmental Geology 56, no. 2 (2023): 115–23. http://dx.doi.org/10.9719/eeg.2023.56.2.115.

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19

Montano, Damaris, Marta Gasparrini, Axel Gerdes, Giovanna Della Porta, and Richard Albert. "In-situ U-Pb dating of Ries Crater lacustrine carbonates (Miocene, South-West Germany): Implications for continental carbonate chronostratigraphy." Earth and Planetary Science Letters 568 (August 2021): 117011. http://dx.doi.org/10.1016/j.epsl.2021.117011.

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20

Zou, Yu, Donghua You, Bo Chen, et al. "Carbonate U-Pb Geochronology and Clumped Isotope Constraints on the Origin of Hydrothermal Dolomites: A Case Study in the Middle Permian Qixia Formation, Sichuan Basin, South China." Minerals 13, no. 2 (2023): 223. http://dx.doi.org/10.3390/min13020223.

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Reservoirs in the dolomites of the Middle Permian Qixia Formation in the Sichuan Basin are currently important oil and gas exploration objects in China. However, the questions concerning the sources of the dolomitized fluids and the control factors of the Qixia hydrothermal dolomites remain unclear. In this study, the original hydrothermal dolomites (the replacement dolomites (RDs) and saddle dolomites (SDs)) from the Qixia Formation in the southwestern Sichuan Basin (the PR1 well and Baoxing section) were mainly examined using novel in situ carbonate U-Pb dating with clumped isotopes (∆47). O

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21

Jin, Xiao-Ye, Jian-Xin Zhao, Yue-Xing Feng, et al. "CALCITE U-Pb DATING UNRAVELS THE AGE AND HYDROTHERMAL HISTORY OF THE GIANT SHUIYINDONG CARLIN-TYPE GOLD DEPOSIT IN THE GOLDEN TRIANGLE, SOUTH CHINA." Economic Geology 116, no. 6 (2021): 1253–65. http://dx.doi.org/10.5382/econgeo.4870.

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Abstract The ages of Carlin-type gold deposits in the Golden Triangle of South China have long been questioned due to the general lack of minerals unequivocally linked to gold deposition that can be precisely dated using conventional radiogenic isotope techniques. Recent advances in U-Pb methods show that calcite can be used to constrain the ages of hydrothermal processes, but few studies have been applied to ore deposits. Herein, we show that this approach can be used to constrain the timing of hydrothermal activity that generated and overprinted the giant Shuiyindong Carlin-type gold deposit

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22

Scharf, Andreas, Christopher M. Bailey, Robert Bolhar, Frank Mattern, and Uwe Ring. "Post-obduction listwaenite genesis in the Oman Mountains inferred from structural analysis and U-Pb carbonate dating." Earth and Planetary Science Letters 595 (October 2022): 117756. http://dx.doi.org/10.1016/j.epsl.2022.117756.

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23

SHEN, Anjiang, Anping HU, Ting CHENG, et al. "Laser ablation in situ U-Pb dating and its application to diagenesis-porosity evolution of carbonate reservoirs." Petroleum Exploration and Development 46, no. 6 (2019): 1127–40. http://dx.doi.org/10.1016/s1876-3804(19)60268-5.

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24

Ivanov, A. V., E. F. Letnikova, S. I. Shkolnik, A. V. Maslov, and N. I. Vetrova. "EARLY CAMBRIAN DEPOSITS OF THE CONTINENTAL MARGIN (SOUTH OF TUVA, TEREGTIG FORMATION): RESULTS OF U–Pb DATING OF DETRITAL ZIRCONS AND Sr-CHEMOSTRATIGRAPHY." Доклады Российской академии наук. Науки о Земле 512, no. 2 (2023): 165–73. http://dx.doi.org/10.31857/s2686739722602034.

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The sedimentation interval (530–520 Ma) of the Teregtig Formation deposits in southern Tuva is estimated based on U–Pb dating of detrital zircons from terrigenous deposits and Sr-chemostratigraphy of carbonate rocks. The main source area for clastic material, containing a large amount of detrital zircon grains, were rocks with an age of 580 Ma. The presence of a wide diversity of Precambrian detrital zircons indicates that sedimentation of the Teregtig Formation took place within a block of continental crust with a long evolutionary history. The presence of numerous chromites in their matrix i

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25

Liang, Enyun, Dezhi Huang, Guangqian Zeng, et al. "Metallogenesis of the Bawang Sn-Zn Polymetallic Deposit, Wuxu Ore Field, Guangxi, South China: U-Pb Dating and C-O-S-Pb Isotopic Constraints." Minerals 12, no. 2 (2022): 137. http://dx.doi.org/10.3390/min12020137.

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The Bawang deposit, located in the west of Wuxu ore field, southern section of the Nandan-Hechi metallogenic belt, is a medium-sized tin–zinc polymetallic deposit. Its genesis has been a matter of debate because of lacking constraints from isotope geology. In this study, LA-MC-ICP-MS U-Pb dating of cassiterite and C-O-S-Pb isotope analyses of monominerals were used to investigate the mineralization age and source of the ore-forming minerals in the Bawang deposit. LA-ICP-MS U–Pb dating of cassiterite yielded ages of 93.1 ± 4.8 Ma and 85.3 ± 6.3 Ma, indicating that the mineralization occurred in

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26

Zhang, Haowei, Jian Wang, Ahmed Mansour, et al. "New Age Constraints of the Bilong Co Oil Shale in the Qiangtang Basin, Northern Tibet: Evidence from In Situ U–Pb Dating and Palaeontology." Minerals 14, no. 3 (2024): 246. http://dx.doi.org/10.3390/min14030246.

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The Bilong Co oil shale is one of the most significant source rocks in the Mesozoic Qiangtang Basin (Northern Tibet); however, its absolute chronology remains controversial. In this study, in situ carbonate U–Pb isotope dating analysis was carried out for the first time. Detailed field geological investigations yielded some age-diagnostic ammonites, enabling a re-evaluation of the stratigraphic age of the Bilong Co oil shale. A total of 61 spots of U–Pb isotope dating from the middle part of the Bilong Co oil shale section suggests an average age of 181 ± 13 Ma. Elemental geochemistry and diag

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27

Rochelle-Bates, N., N. M. W. Roberts, I. Sharp, et al. "Geochronology of volcanically associated hydrocarbon charge in the pre-salt carbonates of the Namibe Basin, Angola." Geology 49, no. 3 (2020): 335–40. http://dx.doi.org/10.1130/g48019.1.

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Abstract In volcanic rifted margins, the timing of hydrocarbon charge is difficult to predict, but is important in understanding fluid genesis. We investigated whether igneous activity was linked to hydrocarbon charge in the prolific South Atlantic pre-salt petroleum system. To do this, we applied in situ carbonate U-Pb geochronology, a relatively novel tool for dating hydrocarbon migration, to bituminous veins in pre-salt travertines from the rifted onshore Namibe Basin (Angola). To test if fluid flow was synchronous with known volcanic pulses, we also obtained new 40Ar/39Ar geochronology fro

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28

Jiang, Yong. "Middle-Late Jurassic chronology and source-to-sink system of the Sikeshu section in the southern margin of the Junggar Basin, Xinjiang." Advances in Engineering Technology Research 3, no. 1 (2022): 133. http://dx.doi.org/10.56028/aetr.3.1.133.

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With the improvement of isotopic testing technology, high-precision dating methods such as SHRIMP or LA-ICP-MS of detrital zircon have been used to analyze and infer the formation age of sedimentary basins, the source of detrital materials, and the tectonic background of the formation and widely used. The LA-ICP-MS zircon U-Pb dating method was used to study the detrital zircon in the Middle-Late Jurassic sandstone in the Sikeshu section of the southern margin of the Junggar Basin, Xinjiang. The results show that the detrital zircon ages are mainly 270~447Ma,240~440Ma,245~432Ma, and 286~360Ma.

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29

Pomiès, C., B. Hamelin, J. Lancelot, and R. Blomqvist. "207 Pb/ 206 Pb and 238 U/ 230 Th dating of uranium migration in carbonate fractures from the Palmottu uranium ore (southern Finland)." Applied Geochemistry 19, no. 3 (2004): 273–88. http://dx.doi.org/10.1016/s0883-2927(03)00134-3.

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30

Piccione, Gavin, E. Troy Rasbury, Brent A. Elliott, et al. "Vein fluorite U-Pb dating demonstrates post–6.2 Ma rare-earth element mobilization associated with Rio Grande rifting." Geosphere 15, no. 6 (2019): 1958–72. http://dx.doi.org/10.1130/ges02139.1.

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Abstract Numerous studies have documented rare-earth element (REE) mobility in hydrothermal and metamorphic fluids, but the processes and timing of REE mobility are rarely well constrained. The Round Top laccolith in the Trans-Pecos magmatic province of west Texas, a REE ore prospect, has crosscutting fractures filled with fluorite and calcite along with a variety of unusual minerals. Most notably among these is an yttrium and heavy rare-earth element (YHREE) carbonate mineral, which is hypothesized to be lokkaite based on elemental analyses. While the Round Top laccolith is dated to 36.2 ± 0.

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Godeau, Nicolas, Pierre Deschamps, Abel Guihou, et al. "U-Pb dating of calcite cement and diagenetic history in microporous carbonate reservoirs: Case of the Urgonian Limestone, France." Geology 46, no. 3 (2018): 247–50. http://dx.doi.org/10.1130/g39905.1.

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32

Guillong, Marcel, Jörn-Frederik Wotzlaw, Nathan Looser, and Oscar Laurent. "Evaluating the reliability of U–Pb laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) carbonate geochronology: matrix issues and a potential calcite validation reference material." Geochronology 2, no. 1 (2020): 155–67. http://dx.doi.org/10.5194/gchron-2-155-2020.

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Abstract. We document that the reliability of carbonate U–Pb dating by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is improved by matching the aspect ratio of the LA single-hole drilling craters and propagating long-term excess variance and systematic uncertainties. We investigated the impact of different matrices and ablation crater geometries using U–Pb isotope analyses of one primary (WC-1) and two secondary reference materials (RMs). Validation RMs (VRMs) include a previously characterised one (ASH-15D) and a new candidate (JT), characterised by ID-TIMS (interce

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33

Zaccaria, Daria, Noemi Vicentini, Maria Grazia Perna, et al. "Lamprophyre as the Source of Zircon in the Veneto Region, Italy." Minerals 11, no. 10 (2021): 1081. http://dx.doi.org/10.3390/min11101081.

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Discrete zircons, up to 9 mm in length, occur in alluvial deposits from the Veneto area. They are likely derived from the disaggregation of lamprophyric rocks belonging to a regional, pervasive dyke-swarm. Zircon and REE phases occur in both alkaline lamprophyres and connate calcite-bearing felsic lithics and their debris in lamprophyre breccia. We present 36 new complete U–Pb and trace element analyses of zircons and associated inclusions. We used a statistical approach on a larger dataset using new and literature data to evaluate the confidence figure to give an estimation of age of zircons.

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LIATI, ANTHI, NIKOS SKARPELIS, and GEORGIA PE-PIPER. "Late Miocene magmatic activity in the Attic-Cycladic Belt of the Aegean (Lavrion, SE Attica, Greece): implications for the geodynamic evolution and timing of ore deposition." Geological Magazine 146, no. 5 (2009): 732–42. http://dx.doi.org/10.1017/s0016756809006438.

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AbstractNumerous post-metamorphic Miocene granitoids occur in the area of Lavrion, SE Attica, at the western end of the Attic-Cycladic Belt of the Aegean. U–Pb ion microprobe-dating (SHRIMP) of zircon from a granitoid sill in the hanging-wall of a regional detachment fault reveals two distinct ages: (1) 11.93 ± 0.41 Ma, obtained from inherited zircon cores with metamorphic characteristics (homogeneous cathodoluminescence, low Th/U ratios) and granulite-type (round/resorbed) morphology. This age is interpreted as the time of a likely granulite-facies metamorphism of the precursor rock. (2) 8.34

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Feng, Yuexing, Dunyi Liu, Jianxin Zhao, Wenqing Pan, and Ting Cheng. "<italic>In-situ</italic> LA-MC-ICPMS U-Pb dating method for low-uranium carbonate minerals." Chinese Science Bulletin 65, no. 2-3 (2019): 150–54. http://dx.doi.org/10.1360/tb-2019-0355.

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36

Mundil, Roland, Peter Brack, Martin Meier, Hans Rieber, and Felix Oberli. "High resolution UPb dating of Middle Triassic volcaniclastics: Time-scale calibration and verification of tuning parameters for carbonate sedimentation." Earth and Planetary Science Letters 141, no. 1-4 (1996): 137–51. http://dx.doi.org/10.1016/0012-821x(96)00057-x.

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37

Liu, Xin, Nansheng Qiu, and Qianqian Feng. "The thermal history of Permian carbonate strata reconstructed with clumped isotopes and U–Pb dating: Eastern Sichuan Basin, SW China." Marine and Petroleum Geology 163 (May 2024): 106767. http://dx.doi.org/10.1016/j.marpetgeo.2024.106767.

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38

Henneberg, Mareike, Jolien Linckens, Michael Schramm, Jörg Hammer, Axel Gerdes, and Gernold Zulauf. "Structural evolution of continental and marine Permian rock salt of the North German Basin: constraints from microfabrics, geochemistry and U–Pb ages." International Journal of Earth Sciences 109, no. 7 (2020): 2369–87. http://dx.doi.org/10.1007/s00531-020-01905-w.

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Abstract Analyzing the dynamics of microstructural response on natural deformation in rock salt, we present microfabric, EBSD, geochemical and U–Pb data, obtained from Permian salt formations of the Kiel-Honigsee salt wall in Northern Germany. The samples were recovered from deep drillings, which penetrated through an overturned rock salt sequence of both Rotliegend and Zechstein deposits. The bromide concentration in halite indicates a continental and marine origin for the Rotliegend and Zechstein deposits, respectively. Despite intense deformation, relics of early diagenetic fabrics are stil

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Wang, Mengqi, Jingwen Mao, Huishou Ye, and Hongying Li. "The Age of Hubi Copper (Cobalt) Ore Mineralization in the Zhongtiao Mountain Area, Southern Margin of the Trans-North China Orogen: New Constraints from U-Pb Dating of Rutile and Monazite." Minerals 12, no. 3 (2022): 288. http://dx.doi.org/10.3390/min12030288.

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The Hubi copper (cobalt) ore district, one of the largest typical examples of the sediment-hosted stratiform type in the Zhongtiao Mountain area, is located on the southern margin of the Trans-North China Orogen within the North China Craton (NCC) and has a copper reserve of 0.79 Mt. Mineralization is mainly hosted by the Zhongtiao Group, a sequence of metasedimentary rocks deposited from ~2168 Ma to ~2059 Ma. Subsequently, a collisional orogeny (Trans-North China Orogen) occurred at ~1.85 Ga. The absolute age of mineralization has not been well constrained due to the lack of suitable minerals

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Guo, Qian, Shun Guo, Yueheng Yang, et al. "Multiple growth of zirconolite in marble (Mogok metamorphic belt, Myanmar): evidence for episodes of fluid metasomatism and Zr–Ti–U mineralization in metacarbonate systems." European Journal of Mineralogy 36, no. 1 (2024): 11–29. http://dx.doi.org/10.5194/ejm-36-11-2024.

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Abstract. Fluid infiltration into (meta-)carbonate rocks is an important petrologic process that induces metamorphic decarbonation and potential mineralization of metals or nonmetals. The determination of the infiltration time and the compositional features of reactive fluids is essential to understand the mechanism and process of fluid–rock interactions. Zirconolite (ideal formula: CaZrTi2O7) is an important U-bearing accessory mineral that can develop in metasomatized metacarbonate rocks. In this study, we investigate the occurrence, texture, composition, and chronology of various types of z

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Liu, Lijuan, Jeremy P. Richards, Robert A. Creaser, S. Andrew DuFrane, Karlis Muehlenbachs, and Peter B. Larson. "Geology and age of the Morrison porphyry Cu–Au–Mo deposit, Babine Lake area, British Columbia." Canadian Journal of Earth Sciences 53, no. 9 (2016): 950–78. http://dx.doi.org/10.1139/cjes-2015-0231.

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The Morrison porphyry Cu–Au–Mo deposit is genetically and spatially related to Eocene plagioclase–hornblende–biotite porphyry intrusions. One porphyry intrusion yielded a U–Pb age of 52.54 ± 1.05 Ma. Mineralization occurs in three stages: (1) vein-type and disseminated chalcopyrite and minor bornite (associated with potassic alteration and gold mineralization); (2) vein-type molybdenite (associated with weak phyllic alteration); and (3) polymetallic sulfide–carbonate veins (dolomite ± quartz–sphalerite–galena–arsenopyrite–chalcopyrite, associated with weak sericite–carbonate alteration). Re–Os

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He, Xi-Heng, Xiao-Hua Deng, Leon Bagas, Jing Zhang, Chao Li, and Wen-Dong Zhang. "Geology, geochronology, and fluid inclusion studies of the Xiaorequanzi volcanogenic massive sulphide Cu–Zn deposit in the East Tianshan Terrane, China." Canadian Journal of Earth Sciences 57, no. 12 (2020): 1392–410. http://dx.doi.org/10.1139/cjes-2019-0067.

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The Xiaorequanzi Cu–Zn deposit is in the westernmost part of East Tianshan Terrane in northwestern China. The deposit is unique in the region being a volcanogenic massive sulphide (VMS) deposit located near a zone (or belt) containing giant late Paleozoic porphyry Cu deposits. Aiming to better understand the genesis of the mineral deposits in the terrane and their tectonic setting, we report our findings of detailed studies on fluid inclusion microthermometry, Re–Os dating of chalcopyrite from the massive ore, and U–Pb dating of zircons from the host volcanic rocks. There are two sulphide stag

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Zheng, Jiang, Long Wen, Yuhui Ge, et al. "U–Pb Dating of Fibrous Dolomite in the Hydrothermal Dolostone of the Dengying Formation, Central Sichuan Basin, and Its Response to Supercontinent Breakup." Minerals 13, no. 10 (2023): 1353. http://dx.doi.org/10.3390/min13101353.

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Super-deep drilling in the central Sichuan Basin encountered volcanic rocks of the Suxiong Formation, which are overlain by multiple hydrothermal alterations within the upper section of the Ediacaran Dengying Formation. This provides an excellent research opportunity to understand the pre-Cambrian hydrothermal activity and geological evolution of the western margin of the Yangtze Craton. Observations revealed the development of a series of hydrothermal dolomite aggregates characterized by the presence of brown sphalerite within fractures and pores of the carbonate rock. Microscopically, the do

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Salih, Namam, Howri Mansurbeg, Philippe Muchez, Axel Gerdes, and Alain Préat. "Hydrothermal Fluids and Cold Meteoric Waters along Tectonic-Controlled Open Spaces in Upper Cretaceous Carbonate Rocks, NE-Iraq: Scanning Data from In Situ U-Pb Geochronology and Microthermometry." Water 13, no. 24 (2021): 3559. http://dx.doi.org/10.3390/w13243559.

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The Upper Cretaceous carbonates along the Zagros thrust-fold belt “Harir-Safin anticlines” experienced extensive hot brine fluids that produced several phases of hydrothermal cements, including saddle dolomites. Detailed fluid inclusion microthermometry data show that saddle dolomites precipitated from hydrothermal (83–160 °C) and saline fluids (up to 25 eq. wt.% NaCl; i.e., seven times higher than the seawater salinity). The fluids interacted with brine/rocks during their circulation before invading the Upper Cretaceous carbonates. Two entrapment episodes (early and late) of FIs from the hydr

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Sun, Yong-gang, Bi-le Li, Qing-feng Ding, et al. "Mineralization Age and Hydrothermal Evolution of the Fukeshan Cu (Mo) Deposit in the Northern Great Xing’an Range, Northeast China: Evidence from Fluid Inclusions, H–O–S–Pb Isotopes, and Re–Os Geochronology." Minerals 10, no. 7 (2020): 591. http://dx.doi.org/10.3390/min10070591.

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The Fukeshan Cu (Mo) deposit is a newfound porphyry deposit in the northern Great Xing’an Range (GXR), northeast China. In this paper, we present results of chalcopyrite Re–Os geochronology, microthermometry of the fluid inclusions (FIs), and isotopic (H–O–S–Pb) compositions of the Fukeshan Cu (Mo) deposit. Its ore-forming process can be divided into sulfide-barren quartz veins (A vein; stage I), quartz + chalcopyrite + pyrite veins (B vein; stage II), quartz + polymetallic sulfide veins (D vein; stage III), and barren quartz + carbonate ± pyrite veins (E vein; stage IV), with Cu mineralizatio

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Park, Adrian F., Steven J. Hinds, Christopher R. M. McFarlane, Brandan Boucher, Matthew R. Stimson, and Perry Clark. "Petrography, geochemistry, age, and stratigraphic significance of the Mississippian Boyd Creek tuff, southern New Brunswick, Canada." Atlantic Geoscience 60 (March 6, 2024): 015–35. http://dx.doi.org/10.4138/atlgeo.2024.002.

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The Boyd Creek tuff consists of two pyroclastic flow deposits and more widespread air-fall tuff within a Mississippian red bed sequence located in outcrop and boreholes around Weldon and Pre d’en Haut, Albert and Westmorland counties, New Brunswick. Long recognized as an important stratigraphic marker, it has been placed in either the Tournaisian Weldon Formation or Visean Hillsborough Formation by previous workers, with a position in the upper Tournaisian Weldon Formation being the most recent interpretation. A Visean laser ablation-inductively coupled plasma-mass spectrometry U–Pb zircon age

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Milton, Jack E., Kenneth A. Hickey, Sarah A. Gleeson, Hendrik Falck, and Julien Allaz. "In Situ Monazite Dating of Sediment-Hosted Stratiform Copper Mineralization in the Redstone Copper Belt, Northwest Territories, Canada: Cupriferous Fluid Flow Late in the Evolution of a Neoproterozoic Sedimentary Basin." Economic Geology 112, no. 7 (2017): 1773–806. http://dx.doi.org/10.5382/econgeo.2017.4529.

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Abstract The 300-km-long Redstone copper belt in the Mackenzie Mountains, Northwest Territories, Canada, is composed of a series of sediment-hosted stratiform copper (SSC) deposits hosted in Neoproterozoic fault-bounded intracontinental rift basins. Mineralization at Coates Lake, the largest of these deposits, is concentrated within microbial laminite layers in the transition zone between underlying continental red beds of the Redstone River Formation and overlying marine carbonates of the Coppercap Formation. Disseminated cupriferous sulfides (chalcopyrite, bornite, and chalcocite) form part

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Mundil, Roland, Peter Brack, Martin Meier, Hans Rieber, and Felix Oberli. "Erratum to “High resolution UPb dating of Middle Triassic volcaniclastics: Time-scale calibration and verification for tuning parameters for carbonate sedimentation” [Earth Planet. Sci. Lett. 141 (1996) 137–151]." Earth and Planetary Science Letters 143, no. 1-4 (1996): 275. http://dx.doi.org/10.1016/0012-821x(96)00147-1.

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Hao, SONG, XU ZhengQi, SONG ShiWei, et al. "Geochemistry and LA-ICP-MS zircon U-Pb geochronological dating of diabase dykes and their relationship with mineralization of the carbonate-siliceous-pelitic rock type uranium deposits in Daxin-Qinjia, western Guangxi." Acta Petrologica Sinica 35, no. 9 (2019): 2845–63. http://dx.doi.org/10.18654/1000-0569/2019.09.15.

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Cruset, David, Jaume Vergés, Nuno Rodrigues, et al. "U–Pb dating of carbonate veins constraining timing of beef growth and oil generation within Vaca Muerta Formation and compression history in the Neuquén Basin along the Andean fold and thrust belt." Marine and Petroleum Geology 132 (October 2021): 105204. http://dx.doi.org/10.1016/j.marpetgeo.2021.105204.

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