Zobrazeno 1 - 10
of 20
pro vyhledávání: '"W. James Dunlap"'
Publikováno v:
Geological Society, London, Special Publications. 439:465-486
Publikováno v:
Bulletin of Volcanology. 72:357-371
Mount Morning is a Cenozoic, alkaline eruptive center in the south-west Ross Sea, Antarctica. New ages on 17 Mount Morning volcanic rocks (combined with 34 existing ages) allows division of Mount Morning volcanism into two phases, erupted between at
Autor:
Christine Edgoose, Ian Scrimgeour, W. James Dunlap, Mike Sandiford, Dorothy Close, Sandra McLaren
Publikováno v:
Basin Research. 21:315-334
The Centralian Superbasin in central Australia is one of the most extensive intracratonic basins known from a stable continental setting, but the factors controlling its formation and subsequent structural dismemberment continue to be debated. Argon
Publikováno v:
Geological Society of America Bulletin. 120:912-929
The Okanogan gneiss dome, Washington, is located in the hinterland of the North American Cordillera and is part of a chain of metamorphic core complexes containing gneiss and migmatite domes exhumed during Eocene extension of thickened crust. U-Pb se
Autor:
Noel C. White, W. James Dunlap, Charlotte M. Allen, Peter W. Reiners, Ian H. Campbell, David R. Cooke, Suzanne D. Golding, Anthony C. Harris
Publikováno v:
Mineralium Deposita. 43:295-314
Application of multiple chronometers (including U–Pb and 40Ar/39Ar geochronology and zircon and apatite (U–Th)/He thermochronology) to porphyry intrusions at the Bajo de la Alumbrera porphyry copper–gold deposit, Argentina, reveals a complex hi
Publikováno v:
Journal of the Geological Society. 164:941-944
Several descriptions of argon diffusion in K-feldspar have been developed, including the quantitative multiple-diffusion-domain (MDD) and multipath models and the qualitative ‘recrystallization’ model. These models remain contentious and the natu
Publikováno v:
Journal of the Geological Society. 163:1011-1024
Three Carboniferous-age detrital muscovites from the Variscan foreland basin of SW Poland and two muscovites from phyllites underlying the basement have been dated by the 40 Ar/ 39 Ar step-heating and single-crystal laser fusion method. 40 Ar/ 39 Ar
Autor:
W. James Dunlap, Sandra McLaren
Publikováno v:
Basin Research. 18:189-203
The potential use of 40Ar/39Ar thermochronologic data from K-feldspars in reconstructing basin thermal history has been evaluated using the example of the Warburton/Cooper/Eromanga Basin, Australia's largest onshore oil- and gas-producing basin. Resu
Publikováno v:
Economic Geology. 98:797-818
Beltana is a high-grade hypogene willemite deposit hosted in Lower Cambrian carbonate rocks in the Arrowie basin, northern Flinders Ranges, South Australia. It is situated adjacent to a major growth fault on the basin margin. Ooid grainstone units of
Publikováno v:
Geological Society of America Bulletin. 115:200-216
The exhumation history of the Shuswap Metamorphic Core Complex (Shuswap MCC) is deciphered from structural analysis and 4 0 Ar/ 3 9 Ar thermochronology. With the exception of a few samples contaminated by excess argon, the analytical results indicate