Zobrazeno 1 - 10
of 49
pro vyhledávání: '"G. L. Cumming"'
Publikováno v:
The Crust and Upper Mantle of the Pacific Area
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34af3a1eb6f7c8d84513ee549d7a4607
https://doi.org/10.1029/gm012p0441
https://doi.org/10.1029/gm012p0441
Publikováno v:
Canadian Journal of Earth Sciences. 32:1221-1235
Samples from the Porphyry deposit and the Shoot zone prospect of St. Andrew Goldfields Ltd. in Taylor Township near Matheson, Ontario, have been dated by several different techniques and utilized as a test of the use of Pb-isotope measurements in det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3af9b8584b14afd0a59c105519a5fbe
https://doi.org/10.1139/e95-100
https://doi.org/10.1139/e95-100
Publikováno v:
Canadian Journal of Earth Sciences. 32:508-515
Pb, Sr, and Nd isotopic analyses were performed on a suite of compositionally variable rock samples representing an approximately 2500 m thickness of oceanic crustal lithologies from the deep rift valleys and spreading centers along the periphery of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbe596ee1477244ff31aa54ecc0842ef
https://doi.org/10.1139/e95-043
https://doi.org/10.1139/e95-043
The age of unconformity-related uranium mineralization in the Athabasca Basin, northern Saskatchewan
Autor:
G. L. Cumming, D. Krstic
Publikováno v:
Canadian Journal of Earth Sciences. 29:1623-1639
Age data are presented for major Athabasca Basin uranium deposits at Cigar Lake, Cluff Lake, Collins Bay, Dawn Lake, Eagle Point, McArthur River, Midwest, and Rabbit Lake, as well as for several minor or undeveloped deposits, including Hughes Lake an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec0cc40ee8b78ea67fedb5ee1af54949
https://doi.org/10.1139/e92-128
https://doi.org/10.1139/e92-128
Autor:
D. Krstic, G. L. Cumming
Publikováno v:
Canadian Journal of Earth Sciences. 28:1328-1339
Pb-isotope ratios of whole-rock specimens and mineral separates from the gneisses surrounding the Namew Lake Ni–Cu deposit, south of Flin Flon, Manitoba, are compared with the Pb-isotope ratios in the ore minerals and with recently reported zircon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e64b7aa9c33aad902b2f805293560257
https://doi.org/10.1139/e91-116
https://doi.org/10.1139/e91-116
Publikováno v:
Economic Geology. 86:944-959
Lead isotope compositions are reported here for auriferous quartz veins of Nicaragua and for some of their possible source rocks. The veins are hosted by a belt of Cenozoic continental margin basalts and basaltic andesites, which were formed as a res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbf11a4f63fff5ced0c00ee95b43bd69
https://doi.org/10.2113/gsecongeo.86.5.944
https://doi.org/10.2113/gsecongeo.86.5.944
Autor:
D. Krstic, G. L. Cumming
Publikováno v:
Canadian Journal of Earth Sciences. 28:309-325
Intermediate composition orthogneisses of the southward extension of the Flin Flon greenstone belt surround the ultramafic host rock of the Namew Lake Ni–Cu deposit in northern Manitoba. The gneisses began cooling from elevated temperatures of appr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b04a6e587fdf5f40ce8c1a960534ab5
https://doi.org/10.1139/e91-029
https://doi.org/10.1139/e91-029
Publikováno v:
Applied Geochemistry. 8:71-73
Non-autochthonous Pb in soil profiles has been identified by its characteristic isotope patterns, and the degree of mobility of the Pb contamination can be estimated using these isotope patterns.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8830ca88e0d6a635c6317c60000e4d45
https://doi.org/10.1016/s0883-2927(09)80014-0
https://doi.org/10.1016/s0883-2927(09)80014-0
Publikováno v:
Contributions to Mineralogy and Petrology. 97:19-30
Lead isotope data on whole rocks, feldspars and sulfides from the Ivrea zone indicate that the magmas which formed the Hercynian (?) mafic complex derived from an isotopically anomalous mantle with a lead isotope composition that resembled average co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a3883582f4e3b41083b033dc816e9f1
https://doi.org/10.1007/bf00375211
https://doi.org/10.1007/bf00375211