Zobrazeno 1 - 10
of 23
pro vyhledávání: '"L. F. White"'
Publikováno v:
Geochronology, Vol 2, Pp 177-186 (2020)
Baddeleyite is a powerful chronometer of mafic magmatic and meteorite impact processes. Precise and accurate U–Pb ages can be determined from single grains by isotope dilution thermal ionization mass spectrometry (ID-TIMS), but this requires disagg
Externí odkaz:
https://doaj.org/article/c892e5e011444ec0854e90bbf4a15223
Autor:
L. F. White, J. R. Darling, D. E. Moser, D. A. Reinhard, T. J. Prosa, D. Bullen, D. Olson, D. J. Larson, D. Lawrence, I. Martin
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Constraining the timing of crustal processes and impact events remains challenging. Here, the authors show that atom probe tomography can produce highly accurate U-Pb isotopic age constraints in baddeleyite crystals, which is a common phase in terres
Externí odkaz:
https://doaj.org/article/ecf5a06743ae4109b011776c6c0d7a01
Autor:
B. Myers, T. Carney, J. Rooney, S. Malatesta, E. J. Ragan, L. F. White, H. Natcheva, T. C. Bouton, S. E. Weber, M. Farhat, H. McIlleron, D. Theron, C. D. H. Parry, C. R. Horsburgh, R. M. Warren, K. R. Jacobson
Publikováno v:
The International Journal of Tuberculosis and Lung Disease. 27:444-450
BACKGROUND: Smoking of illicit drugs may lead to more rapid TB disease progression or late treatment presentation, yet research on this topic is scant. We examined the association between smoked drug use and bacterial burden among patients newly init
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7446982b5e6f98a3ca1a978e31556bb
https://doi.org/10.5588/ijtld.22.0650
https://doi.org/10.5588/ijtld.22.0650
Autor:
B. G. Rider-Stokes, R. C. Greenwood, M. Anand, L. F. White, I. A. Franchi, V. Debaille, S. Goderis, L. Pittarello, A. Yamaguchi, T. Mikouchi, P. Claeys
Angrite meteorites are thought to represent ancient basaltic igneous rocks that formed inward of Jupiter’s orbit on the basis of their isotopic parameters such as ε50Ti, ε54Cr and Δ17O in addition to Fe/Mn ratios of pyroxene. New bulk oxygen iso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60226cce07a492dc664031f3e212937b
https://biblio.vub.ac.be/vubir/impact-mixing-among-rocky-planetesimals-in-the-early-solar-system-from-angrite-oxygen-isotopes(dfc96dbf-44a0-4c17-a650-a72fc4b132e3).html
https://biblio.vub.ac.be/vubir/impact-mixing-among-rocky-planetesimals-in-the-early-solar-system-from-angrite-oxygen-isotopes(dfc96dbf-44a0-4c17-a650-a72fc4b132e3).html
Autor:
Sandra D. Taylor, Daniel E. Perea, T. V. Kizovski, Matthew R.M. Izawa, L. F. White, James M.D. Day, I. Barker, B. R. Joy, B. C. Hyde, Libor Kovarik, Desmond E. Moser, Kimberly T. Tait
Publikováno v:
Geochimica et Cosmochimica Acta. 283:103-123
Northwest Africa (NWA) 7042 is an intermediate, permafic shergottite consisting of two generations of olivine (early zoned olivine Fo41-76, and late-stage fayalitic olivine Fo46-56), complexly zoned pyroxene (En35-64Fs22-46Wo5-34), shock-melted or ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed1c66de7e6c73e21da1418ab3f6c4fb
https://doi.org/10.1016/j.gca.2020.05.030
https://doi.org/10.1016/j.gca.2020.05.030
Publikováno v:
Geochronology, Vol 2, Pp 177-186 (2020)
White, L F, Tait, K, Kamo, S L, Moser, D E & Darling, J 2020, ' Highly accurate dating of micrometre-scale baddeleyite domains through combined focused ion beam extraction and U–Pb thermal ionization mass spectrometry (FIB-TIMS) ', Geochronology, vol. 2, pp. 177-186 . https://doi.org/10.5194/gchron-2-177-2020
White, L F, Tait, K, Kamo, S L, Moser, D E & Darling, J 2020, ' Highly accurate dating of micrometre-scale baddeleyite domains through combined focused ion beam extraction and U–Pb thermal ionization mass spectrometry (FIB-TIMS) ', Geochronology, vol. 2, pp. 177-186 . https://doi.org/10.5194/gchron-2-177-2020
Baddeleyite is a powerful chronometer of mafic magmatic and meteorite impact processes. Precise and accurate U–Pb ages can be determined from single grains by isotope dilution thermal ionization mass spectrometry (ID-TIMS), but this requires disagg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3ab0a6f69aa61f2f1e1d43f7cb67e01
https://doi.org/10.5194/gchron-2-177-2020
https://doi.org/10.5194/gchron-2-177-2020
Autor:
Katarina Miljković, Ana Cernok, Myriam Lemelin, Rebecca R. Ghent, Martin J. Whitehouse, William D.A. Rickard, Mahesh Anand, James Darling, L. F. White, Denis Fougerouse, Kimberly T. Tait, Steven M. Reddy, David W. Saxey
Publikováno v:
Černok, A, White, L, Anand, M, Tait, K, Darling, J, Whitehouse, M J, Lemelin, M, Reddy, S, Fougerouse, D, Rickard, W, Saxey, D & Ghent, R 2021, ' Lunar samples record an impact 4.2 billion years ago that may have formed the Serenitatis Basin ', Communications Earth and Environment, vol. 2, 120 . https://doi.org/10.1038/s43247-021-00181-z
Impact cratering on the Moon and the associated size-frequency distribution of impact craters has been used to determine the ages of the lunar and planetary surfaces across the Solar System1,2. Radiometric age-dating of lunar samples plays a critical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c67b2c2eec6f58645e998e841b3b07e
https://researchportal.port.ac.uk/portal/en/publications/lunar-samples-record-an-impact-42-billion-years-ago-that-may-have-formed-the-serenitatis-basin(45057ecd-c874-434e-bd50-a2ff598c1f3d).html
https://researchportal.port.ac.uk/portal/en/publications/lunar-samples-record-an-impact-42-billion-years-ago-that-may-have-formed-the-serenitatis-basin(45057ecd-c874-434e-bd50-a2ff598c1f3d).html
Publikováno v:
Geoscience Frontiers, Vol 10, Iss 5, Pp 1841-1848 (2019)
White, L F, Moser, D E, Tait, K, Langelier, B, Barker, I R & Darling, J 2019, ' Crystallization and impact history of a meteoritic sample of early lunar crust (NWA 3163) refined by atom probe geochronology ', Geoscience Frontiers . https://doi.org/10.1016/j.gsf.2018.11.005
White, L F, Moser, D E, Tait, K, Langelier, B, Barker, I R & Darling, J 2019, ' Crystallization and impact history of a meteoritic sample of early lunar crust (NWA 3163) refined by atom probe geochronology ', Geoscience Frontiers . https://doi.org/10.1016/j.gsf.2018.11.005
Granulitic lunar meteorites offer rare insights into the timing and nature of igneous, metamorphic and impact processes in the lunar crust. Accurately dating the different events recorded by these materials is very challenging, however, due to low tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b2028d0207da2e3784a038797d8fe2a
https://doi.org/10.1016/j.gsf.2018.11.005
https://doi.org/10.1016/j.gsf.2018.11.005
Decline of giant impacts on Mars by 4.48 billion years ago and an early opportunity for habitability
Autor:
Desmond E. Moser, Axel Wittmann, Francis M. McCubbin, David J. Larson, Anthony J. Irving, L. F. White, G. Arcuri, David A. Reinhard, Kimberly T. Tait, I. Barker, J. Roszjar, Connor Davis, James Darling
Publikováno v:
Moser, D E, Arcuri, G A, Reinhard, D, White, L F, Darling, J, Barker, I R, Larson, D J, Irving, A J, McCubbin, F M, Tait, K, Roszjar, J, Wittmann, A & Davis, C 2019, ' Decline of giant impacts on Mars by 4.48 billion years ago and an early opportunity for habitability ', Nature Geoscience, vol. 12, no. 7, pp. 522–527 . https://doi.org/10.1038/s41561-019-0380-0
The timing of the wane in heavy meteorite bombardment of the inner planets is debated. Its timing determines the onset of crustal conditions consistently below the thermal and shock pressure limits for microbiota survival, and so bounds the occurrenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b55fb6b5f407621fa2fd360972d21bb
https://doi.org/10.1038/s41561-019-0380-0
https://doi.org/10.1038/s41561-019-0380-0
Publikováno v:
Černok, A, White, L F, Darling, J, Dunlop, J N & Anand, M 2019, ' Shock-induced microtextures in lunar apatite and merrillite ', Meteoritics and Planetary Science, vol. 54, no. 6, pp. 1262-1282 . https://doi.org/10.1111/maps.13278
Apatite and merrillite are the most common phosphate minerals in a wide range of planetary materials and are key accessory phases for in situ age dating, as well as, for determination of the volatile abundances and their isotopic composition. Despite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a01b4fa4d82d8991dd526aa946b3eeb
https://doi.org/10.1111/maps.13278
https://doi.org/10.1111/maps.13278