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Geochronology
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K. W. W. Sims – One of the best experts on this subject based on the ideXlab platform.
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Data reporting standards for publication of U-series data for Geochronology and timescale assessment in the earth sciences
Quaternary Geochronology, 2017Co-Authors: A. Dutton, K. Rubin, N. Mclean, J. Bowring, E. Bard, R. L. Edwards, G. M. Henderson, M. R. Reid, D. A. Richards, K. W. W. SimsAbstract:Uranium-series data provide essential dating and tracer tools for a broad spectrum of geologic processes. Data reported in U-series Geochronology studies often contain insufficient information to completely assess the data collected. It is frequently not possible to calculate a date using the information provided or to re-calculate using different parameters, ultimately limiting the value of the data. The decay constants used are particularly important in that some of the relevant U-series isotopes have been revised. Here we provide a rationale for a minimum set of required data that will enable most calculations and facilitate later data comparisons. Along with these data reporting norms, we discuss additional metadata that will improve understanding of the data and also enhance the ability to re-interpret and assess them in the context of other studies. We posit that these recommendations will provide a foundation for increasing the longevity and usefulness of measurements in the discipline of U-series Geochronology. (C) 2017 The Authors. Published by Elsevier B.V.
A. Dutton – One of the best experts on this subject based on the ideXlab platform.
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Data reporting standards for publication of U-series data for Geochronology and timescale assessment in the earth sciences
Quaternary Geochronology, 2017Co-Authors: A. Dutton, K. Rubin, N. Mclean, J. Bowring, E. Bard, R. L. Edwards, G. M. Henderson, M. R. Reid, D. A. Richards, K. W. W. SimsAbstract:Uranium-series data provide essential dating and tracer tools for a broad spectrum of geologic processes. Data reported in U-series Geochronology studies often contain insufficient information to completely assess the data collected. It is frequently not possible to calculate a date using the information provided or to re-calculate using different parameters, ultimately limiting the value of the data. The decay constants used are particularly important in that some of the relevant U-series isotopes have been revised. Here we provide a rationale for a minimum set of required data that will enable most calculations and facilitate later data comparisons. Along with these data reporting norms, we discuss additional metadata that will improve understanding of the data and also enhance the ability to re-interpret and assess them in the context of other studies. We posit that these recommendations will provide a foundation for increasing the longevity and usefulness of measurements in the discipline of U-series Geochronology. (C) 2017 The Authors. Published by Elsevier B.V.
Paul R. Renne – One of the best experts on this subject based on the ideXlab platform.
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preliminary dating of the viluy traps eastern siberia eruption at the time of late devonian extinction events
Earth and Planetary Science Letters, 2010Co-Authors: Paul R. Renne, Vincent Courtillot, Vadim A Kravchinsky, Xavier Quidelleur, D P GladkochubAbstract:article i nfo Ar/ 39 Ar dating In this short note, we report new age determinations from four samples of the Middle-Paleozoic Viluy Traps in Siberia, east of the more famous Permo-Triassic Siberian Traps. These samples, which were collected from three drill cores, have been analyzed in parallel and independently in the Orsay (France) and Berkeley Geochronology Center (BGC; USA) Geochronology laboratories, using respectively the Cassignol-Gillot K-Ar and the 40 Ar/ 39 Ar techniques. Dating these samples as a concerted effort in two independent laboratories working jointly on their interpretation is a rather rare yet very valuable exercise. With the K-Ar technique, ages ranging from 338 to 367 Ma with uncertainties on the order of 5 Ma were obtained. With the 40
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Re–Os Geochronology of a Mesoproterozoic sedimentary succession, Taoudeni basin, Mauritania: Implications for basin-wide correlations and Re–Os organic-rich sediments systematics
Earth and Planetary Science Letters, 2010Co-Authors: Alan D. Rooney, David Selby, Jean-pierre Houzay, Paul R. RenneAbstract:The exceptionally well-preserved sedimentary rocks of the Taoudeni basin, NW Africa represent one of the world’s most widespread (> 1 M km2) Proterozoic successions. Hitherto, the sedimentary rocks were considered to be Mid Tonian based on Rb–Sr illite and glauconite Geochronology of the Atar Group. However, new Re–Os organic-rich sediment (ORS) Geochronology from two drill cores indicates that the Proterozoic Atar Group is 200 Ma older (1107 ± 12 Ma, 1109 ± 22 Ma and 1105 ± 37 Ma). The Re–Os Geochronology suggests that the Rb–Sr Geochronology records the age of diagenetic events possibly associated with the Pan African collision.\ud \ud The new Re–Os Geochronology data provide absolute age constraints for recent carbon isotisotope chemostratigraphy which suggests that the Atar Group is Mesoproterozoic and not Neoproterozoic.\ud \ud The new Re–Os ORS Geochronology supports previous studies that suggest that rapid hydrocarbon generation (flash pyrolysis) from contact metametamorphism of a dolerite sill does not significantly disturb the Re–Os ORS systematics. Modelled contact conditions suggest that the Re–Os ORS systematics remain undisturbed at 650 °C at the sill/shale contact and ≥ 280 °C 20 m from the sill/shale contact.\ud \ud Moreover, the Re–Os Geochronology indicates that the West African craton has a depositional history that predates 1100 Ma and that ORS can be correlated on a basin-wide scale. In addition, the Re–Os depositional ages for the ORS of the Taoudeni basin are comparable to those of ORS from the São Francisco craton, suggesting that these cratons are correlatable. This postulate is further supported by identical Osi values for the Atar Group and the Vazante Group of the São Francisco craton
J. Bowring – One of the best experts on this subject based on the ideXlab platform.
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Data reporting standards for publication of U-series data for Geochronology and timescale assessment in the earth sciences
Quaternary Geochronology, 2017Co-Authors: A. Dutton, K. Rubin, N. Mclean, J. Bowring, E. Bard, R. L. Edwards, G. M. Henderson, M. R. Reid, D. A. Richards, K. W. W. SimsAbstract:Uranium-series data provide essential dating and tracer tools for a broad spectrum of geologic processes. Data reported in U-series Geochronology studies often contain insufficient information to completely assess the data collected. It is frequently not possible to calculate a date using the information provided or to re-calculate using different parameters, ultimately limiting the value of the data. The decay constants used are particularly important in that some of the relevant U-series isotopes have been revised. Here we provide a rationale for a minimum set of required data that will enable most calculations and facilitate later data comparisons. Along with these data reporting norms, we discuss additional metadata that will improve understanding of the data and also enhance the ability to re-interpret and assess them in the context of other studies. We posit that these recommendations will provide a foundation for increasing the longevity and usefulness of measurements in the discipline of U-series Geochronology. (C) 2017 The Authors. Published by Elsevier B.V.
N. Mclean – One of the best experts on this subject based on the ideXlab platform.
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Data reporting standards for publication of U-series data for Geochronology and timescale assessment in the earth sciences
Quaternary Geochronology, 2017Co-Authors: A. Dutton, K. Rubin, N. Mclean, J. Bowring, E. Bard, R. L. Edwards, G. M. Henderson, M. R. Reid, D. A. Richards, K. W. W. SimsAbstract:Uranium-series data provide essential dating and tracer tools for a broad spectrum of geologic processes. Data reported in U-series Geochronology studies often contain insufficient information to completely assess the data collected. It is frequently not possible to calculate a date using the information provided or to re-calculate using different parameters, ultimately limiting the value of the data. The decay constants used are particularly important in that some of the relevant U-series isotopes have been revised. Here we provide a rationale for a minimum set of required data that will enable most calculations and facilitate later data comparisons. Along with these data reporting norms, we discuss additional metadata that will improve understanding of the data and also enhance the ability to re-interpret and assess them in the context of other studies. We posit that these recommendations will provide a foundation for increasing the longevity and usefulness of measurements in the discipline of U-series Geochronology. (C) 2017 The Authors. Published by Elsevier B.V.