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Bibliografías temáticas / Carbonate U-Pb dating

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Artículos de revistas

Literatura académica sobre el tema "Carbonate U-Pb dating"

Autor: Grafiati

Publicado: 25 de mayo de 2024

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Artículos de revistas sobre el tema "Carbonate U-Pb dating"

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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