Zobrazeno 1 - 10
of 115
pro vyhledávání: '"D.G.W. Smith"'
Autor:
D.G.W. Smith, S. Launspach
Publikováno v:
Earth and Planetary Science Letters. 102:79-93
The compositions and textures of metal phases in Bruderheim have been examined in detail using Nomarski differential interference contrast techniques, backscattered electron imaging and quantitative electron microprobe analysis for Fe, Ni and Co. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d9e1fde73e964800a5c392670ea1e48
https://doi.org/10.1016/0012-821x(91)90019-e
https://doi.org/10.1016/0012-821x(91)90019-e
Autor:
D.G.W. Smith, S. Launspach
Publikováno v:
Earth and Planetary Science Letters. 99:14-28
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbf5544038ce1c996a43ad6161dd77b9
https://doi.org/10.1016/0012-821x(90)90067-8
https://doi.org/10.1016/0012-821x(90)90067-8
Publikováno v:
Episodes. 9:239-244
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecdec269d45d2c1c0caf87875f8c71d4
https://doi.org/10.18814/epiiugs/1986/v9i4/007
https://doi.org/10.18814/epiiugs/1986/v9i4/007
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 29:63-71
Evidence concerning the true shape of the oxygen Kα emission band is summarised and new measurements of the reflectivity spike of KAP analysing crystals in this region presented. A new interpretation of the oxygen emission band is proposed which lar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9833eba647a4de687c206e8715e99d17
https://doi.org/10.1016/0584-8547(74)80008-x
https://doi.org/10.1016/0584-8547(74)80008-x
Autor:
D.G.W. Smith, S.J.B. Reed
Publikováno v:
Earth and Planetary Science Letters. 72:238-244
Ion microprobe analysis has been used to determine La, Ce, Pr and Nd in merrillite (whitlockite) in 15 ordinary chondrites and Ce in apatite in 11 of these. Concentrations of LREE in merrillite range from 120 to 280 times mean bulk chondritic values,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7cfdc1185172cd2f9983df573d74300
https://doi.org/10.1016/0012-821x(85)90008-1
https://doi.org/10.1016/0012-821x(85)90008-1
Autor:
C.M. Gold, D.G.W. Smith
Publikováno v:
Advances in X-ray Analysis. 19:191-201
A procedure and program are described for rapid, economical and simple production of fully quantitative, multi-element analyses from energy dispersive microprobe data. Methods are outlined for background shaping and scaling, comprehensive overlap cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e75be28e55541b3a10680e6f79fcbbbd
https://doi.org/10.1154/s0376030800007801
https://doi.org/10.1154/s0376030800007801
Autor:
D.G.W. Smith, R.K. O'Nions
Publikováno v:
Chemical Geology. 9:29-43
The oxygen Kα emission spectra from ten simple oxides have been investigated using an A.R.L. electron microprobe. It is found that these spectra can be satisfactorily interpreted using qualitative molecular orbital theory. Changes in the intensities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf1421ae101447dd9b3164abaa16c39b
https://doi.org/10.1016/0009-2541(72)90032-0
https://doi.org/10.1016/0009-2541(72)90032-0
Autor:
P. Fritz, D.G.W. Smith
Publikováno v:
Geochimica et Cosmochimica Acta. 34:1161-1173
The carbon-13 contents of secondary dolomites from various localities in Europe, Canada and the Pacific are very constant within individual deposits and generally fall into the upper range of values obtained from associated limestones. Petrographic e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::460533f0a92583078faea976e88f49b9
https://doi.org/10.1016/0016-7037(70)90056-6
https://doi.org/10.1016/0016-7037(70)90056-6
Autor:
J.A. Westgate, D.G.W. Smith
Publikováno v:
Earth and Planetary Science Letters. 5:313-319
A rapid electron probe technique has been developed for characterising pyroclastic deposits by the composition of their voleanic glass. Samples of Mazama ash (6600 years old) from northwestern USA and southwestern Canada were used to test the composi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d99cf413480d82426d423e9a0e3d70e
https://doi.org/10.1016/s0012-821x(68)80058-5
https://doi.org/10.1016/s0012-821x(68)80058-5
Autor:
D.G.W. Smith, R.K. O'Nions
Publikováno v:
Geochimica et Cosmochimica Acta. 37:249-257
The molecular orbital and crystal field theories are compared and their applicabilities to bonding in silicates are discussed, A molecular orbital bonding model is favoured for orthopyroxene since bonding in both tetrahedral and non-tetrahedral sites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4053b39f557d9904485234624e67f77
https://doi.org/10.1016/0016-7037(73)90132-4
https://doi.org/10.1016/0016-7037(73)90132-4