Zobrazeno 1 - 10
of 10
pro vyhledávání: '"W. E. Ewers"'
Autor:
W. E. Ewers, R. C. Morris
Publikováno v:
Economic Geology. 76:1929-1953
A drill core consisting of unaltered banded iron-formation from Paraburdoo, Western Australia, representing the entire Dales Gorge Member of the Brockman Iron Formation, has been analyzed in short units of about 300 mm or in groups of units of up to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d8abfecc83a6effa77dda07ed054ca8
https://doi.org/10.2113/gsecongeo.76.7.1929
https://doi.org/10.2113/gsecongeo.76.7.1929
Publikováno v:
Contributions to Mineralogy and Petrology. 54:61-64
An experiment, in which an iron-nickel-copper sulphide melt was heated with synthetic chromite and then cooled, showed that substantial quantities of chromite had dissolved in the melt and had then recrystallized as euhedral crystals rimmed with magn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89cf94db9934e2a6e4a82ebf2c33dfc8
https://doi.org/10.1007/bf00370872
https://doi.org/10.1007/bf00370872
Publikováno v:
Journal of the American Chemical Society. 69:2033-2036
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::711460268a27ff84d26c7df0a263d4eb
https://doi.org/10.1021/ja01200a063
https://doi.org/10.1021/ja01200a063
Autor:
W. E. Ewers, D. R. Hudson
Publikováno v:
Economic Geology. 67:1075-1092
Archean, footwall of pillow basalt, contact zone of magnetite-rimmed chromite cuhedra, massive ore, disseminated ore, ultramafics in hanging wall, analysis, mineralogy, ore as ultramafic crystal mush, gravity segregation, phase equilibria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13c3e9ed562cc3ab1d4cbef6e6b92e80
https://doi.org/10.2113/gsecongeo.67.8.1075
https://doi.org/10.2113/gsecongeo.67.8.1075
Publikováno v:
Nature. 288:250-252
Very large iron ore deposits have formed in many parts of the world, evidently by the supergene alteration of Precambrian banded-iron formation (BIF). Some of these deposits extend to great depths, ranging to 2,400 m at Krivoyrog1, beyond the likely
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::508b2a907c2828f2e64d6da4f8712c2a
https://doi.org/10.1038/288250a0
https://doi.org/10.1038/288250a0
Autor:
W. E. Ewers
Publikováno v:
Biogeochemistry of Ancient and Modern Environments ISBN: 9780858470620
Biogeochemistry of Ancient and Modern Environments ISBN: 9783642487415
Biogeochemistry of Ancient and Modern Environments ISBN: 9783642487415
Of all the geological sources of evidence that have been quoted as to the composition of the atmosphere and surface waters in the Archaean and early Proterozoic, banded iron-formations (BIF) deserve special attention. Not only to they occur in vast q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06cc5ac5be0aa28e6890a6262c3a8038
https://doi.org/10.1007/978-3-662-26582-6_9
https://doi.org/10.1007/978-3-662-26582-6_9
Autor:
W. E. Ewers
Publikováno v:
Mineralium Deposita. 2
The driving forces for recrystallization of sulphide minerals that arise from particle size variations (surface energy), from temperature gradients and from the formation of a new phase are compared semi quantitatively. It is shown by expressing thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9834023dd54d75f575bd66540caf5c50
https://doi.org/10.1007/bf00201917
https://doi.org/10.1007/bf00201917
Publikováno v:
The Analyst. 77:205
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3149c1272b2e4cc7dfab59705132502
https://doi.org/10.1039/an9527700205
https://doi.org/10.1039/an9527700205
Autor:
R. A. Sack, W. E. Ewers
Publikováno v:
Nature. 168:964-964
OF the methods which have been used to measure the viscosity of surface films on a liquid substrate only one, the canal or surface-slit method, is amenable to rigorous mathematical treatment. Harkins and Kirkwood1 derived an equation which could be a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8f43c618f631b75df17e9b7ae264c9e
https://doi.org/10.1038/168964a0
https://doi.org/10.1038/168964a0
Autor:
W. E. Ewers
Publikováno v:
Economic Geology. 64:575
For reference to the article under discussion, see this Bibliography Vol. 33, No. 5, 02 N69-08762
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a92360d46981e3587170f4764f5eeb4b
https://doi.org/10.2113/gsecongeo.64.5.575
https://doi.org/10.2113/gsecongeo.64.5.575