Zobrazeno 1 - 10
of 14
pro vyhledávání: '"R J Thériault"'
Publikováno v:
Precambrian Research. 108:113-138
The southern Baffin Island segment of the Trans-Hudson Orogen comprises a three-part crustal architecture. The lowest structural level (level 1) includes ca. 2.88 Ga tonalite-diorite-granite orthogneisses of the parautochthonous Superior Province. Le
Autor:
J. G. Abbott, Vicki McNicoll, Derek J. Thorkelson, D. G. F. Long, Robert H. Rainbird, Larry M. Heaman, R. J. Thériault
Publikováno v:
The Journal of Geology. 105:1-17
Regional lithostratigraphic correlation of early Neoproterozoic Sequence B on the northwest margin of Laurentia includes a 0.5-2 km-thick, laterally continuous, quartzarenite marker of mainly fluvial origin. Concordant U-Pb ages of 54 single detrital
Autor:
I.F. Ermanovics, R. J. Thériault
Publikováno v:
Precambrian Research. 81:15-35
The Torngat orogen is a Paleoproterozoic, granulite-facies belt that welds the Archean components of the Nain and Rae provinces in eastern Labrador. SmNd isotopic and supporting bulk rock major, trace and rare earth element data help elucidate the
Autor:
R. J. Thériault
Publikováno v:
The Journal of Geology. 100:465-475
The Taltson magmatic zone is a north-trending belt of Early Proterozoic granitoids exposed over an area exceeding $$18,000 km^{2}$$ in the Northwest Territories of Canada. Three petrologically and geochronologically discrete intrusive suites comprise
Autor:
G. M. Ross, R. J. Thériault
Publikováno v:
Canadian Journal of Earth Sciences. 28:1140-1147
Sm–Nd isotopic data are presented for 23 drill-core samples from five aeromagnetically and geochronologically (U–Pb zircon) distinct domains of the Precambrian basement of northern Alberta. The domains in question are the Taltson (1.96–1.94 Ga)
Publikováno v:
Canadian Journal of Earth Sciences. 28:1003-1008
Two undeformed biotite granites recovered from exploratory hydrocarbon drill holes that penetrated basement in the Fort Simpson magnetic high were analyzed for U–Pb zircon geochronology and Sm–Nd isotopic composition. Both samples give crystalliz