Zobrazeno 1 - 10
of 23
pro vyhledávání: '"I. T. Nkomo"'
Publikováno v:
Contributions to Mineralogy and Petrology. 78:209-219
Chemical, isotopic, radiographic, and rock-leaching data are combined to describe the effects of rock-water interactions in core samples of petrographically fresh, 1.43 b.y.-old Sherman Granite. The data serve to identify sensitive indicators of inci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41b5f0b81f5503377c8441af4fe0017a
https://doi.org/10.1007/bf00398915
https://doi.org/10.1007/bf00398915
Autor:
I. T. Nkomo, J. S. Stuckless
Publikováno v:
Economic Geology. 75:289-295
Analyses of mineral separates from granites from the Granite Mountains, Wyoming, suggest that most of the thorium and at least half of the uranium are associated with biotite, epidote, and accessory minerals. Biotite and epidote contain most of the u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abcd437cb72600427faeef5b07e25bda
https://doi.org/10.2113/gsecongeo.75.2.289
https://doi.org/10.2113/gsecongeo.75.2.289
Autor:
J. S. Stuckless, I. T. Nkomo
Publikováno v:
Economic Geology. 73:427-441
Evaluation of U-Th-Pb isotopic analyses of whole-rock granite samples from the Granite Mountains, Wyoming, suggests that uranium has been mobilized at least twice since the intrusion of the granite. Whole-rock Th-Pb, whole-rock Rb-Sr, and zircon U-Pb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb478a841f669d5f9aaee6d6dd9bfc66
https://doi.org/10.2113/gsecongeo.73.3.427
https://doi.org/10.2113/gsecongeo.73.3.427
Publikováno v:
Economic Geology. 63:796-814
The leads in feldspars from the main Tertiary intrusives in three mining districts are isotopically similar to the lead deposits immediately associated with them. The largest deposits are the least radiogenic in each region, and the smaller deposits
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4973e908752258d3f45293b7d3cbe87a
https://doi.org/10.2113/gsecongeo.63.7.796
https://doi.org/10.2113/gsecongeo.63.7.796
Autor:
Carl E. Hedge, David B. Wenner, Kathleen R. Simmons, K.A. Butt, I. T. Nkomo, A.T. Miesch, John S. Stuckless
Publikováno v:
Professional Paper.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f43df98e414e32d95988950ed3d2433c
https://doi.org/10.3133/pp1388ac
https://doi.org/10.3133/pp1388ac
Autor:
J. S. Stuckless, I. T. Nkomo
Publikováno v:
AAPG Bulletin. 59
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85149dda3d6f7254eb4b0a37c929b78c
https://doi.org/10.1306/83d91e6b-16c7-11d7-8645000102c1865d
https://doi.org/10.1306/83d91e6b-16c7-11d7-8645000102c1865d
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7492cc844895301106671b377c224bcd
https://doi.org/10.3133/ofr85726
https://doi.org/10.3133/ofr85726
Publikováno v:
AAPG Bulletin. 65
Analyses of 6 mineralized and 4 unmineralized samples from drill holes in the uranium ore deposit at Lilljuthatten, Sweden, yield an apparent Pb-Pb age of 425 ± 6 m.y. (errors at 95% confidence level). This age corresponds with the youngest phase of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b7fb0983eb67c3404bdc5a79011bdbe
https://doi.org/10.1306/2f91994a-16ce-11d7-8645000102c1865d
https://doi.org/10.1306/2f91994a-16ce-11d7-8645000102c1865d
Publikováno v:
Precambrian Research. 16:A39-A40
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb9457f453ad5a795466fa5046d69053
https://doi.org/10.1016/0301-9268(82)90125-5
https://doi.org/10.1016/0301-9268(82)90125-5
Publikováno v:
Geological Society of America Bulletin. 84:989
Isotopic composition and concentration of lead in whole rock and microcline and concentration of uranium and thorium in whole-rock samples of granite from the Granite Mountains, Wyoming, have been determined. The lead isotopic composition in the whol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0767053e4dc5ee38eb13c57881079afe
https://doi.org/10.1130/0016-7606(1973)84<989:lisaud>2.0.co
https://doi.org/10.1130/0016-7606(1973)84<989:lisaud>2.0.co