Zobrazeno 1 - 10
of 59
pro vyhledávání: '"A N LeCheminant"'
Publikováno v:
International Kimberlite Conference Extended Abstracts: 1998.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4040727ffd38d48fc18c10483bb6a5f9
https://doi.org/10.29173/ikc2778
https://doi.org/10.29173/ikc2778
Autor:
A. V. Okrugin, Kenneth L. Buchan, Wouter Bleeker, J. A. Hanes, Kevin R. Chamberlain, Dmitry P. Gladkochub, Ulf Söderlund, A. N. Didenko, Richard E. Ernst, A. S. Mekhonoshin, A N LeCheminant, Michael A. Hamilton, T. B. Kolotilina
Publikováno v:
Nature geoscience. 2016. Vol. 9, № 6. P. 464-469
Precambrian supercontinents Nuna-Columbia (1.7 to 1.3 billion years ago) and Rodinia (1.1 to 0.7 billion years ago) have been proposed. However, the arrangements of crustal blocks within these supercontinents are poorly known. Huge, dominantly basalt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::091d718e66bba080693ebffabaa121a0
https://doi.org/10.1038/ngeo2700
https://doi.org/10.1038/ngeo2700
Publikováno v:
Precambrian Research. 275:151-175
Of ∼35 Archean cratons that have been identified around the globe, only one, the Superior craton of the Canadian Shield, has a reasonably well-defined apparent polar wander (APW) path for much of Paleoproterozoic time based on ‘key’ (i.e., well
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::017e48f1d31cdf35911b7eed444c59c7
https://doi.org/10.1016/j.precamres.2016.01.012
https://doi.org/10.1016/j.precamres.2016.01.012
Publikováno v:
Precambrian Research. 262:101-119
The Kivalliq Igneous Suite (1.77–1.73 Ga) includes the Nueltin Granite intrusions; gabbro and anorthosite intrusions; three swarms of mafic dykes; and basalt, rhyolite and pyroclastic rocks of the Pitz Formation (Wharton Group, middle Dubawnt Super
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0259c78fbd7e5bd766d6051ae36fadb1
https://doi.org/10.1016/j.precamres.2015.02.019
https://doi.org/10.1016/j.precamres.2015.02.019
Publikováno v:
GSA Bulletin.
The formation age of the large (∼50 km) Carswell impact structure, Canada, has been a matter of debate ever since its discovery five decades ago, with proposed ages ranging from Mesoproterozoic to Early Cretaceous. Here, we present new 40Ar-39Ar da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd76d0ad9a32ca9d7fe642e069c3e804
https://doi.org/10.1130/b31666.1
https://doi.org/10.1130/b31666.1
Autor:
Peng Peng, Mimmi K.M. Nilsson, Wouter Bleeker, Ross N. Mitchell, David Evans, Otto van Breemen, Tony N. Lecheminant
Publikováno v:
American Journal of Science. 314:878-894
Laurentia, the core of Paleo- to Mesoproterozoic supercontinent Nuna, has remained largely intact since assembly 2.0 to 1.8 billion years ago [Ga]. For earlier times, previous paleomagnetic data on poorly dated Paleoproterozoic mafic intrusions yield
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fec5e83098654f78fdc9c0a7ea34cd28
https://doi.org/10.2475/04.2014.03
https://doi.org/10.2475/04.2014.03
Publikováno v:
Precambrian Research. 232:119-139
The NNW- to NNE-trending Kaminak diabase dykes, exposed in the Hearne craton of the western Churchill Province, Canada, are components of a Neoarchean–Paleoproterozoic LIP that forms an important pin in plate tectonic reconstructions impacting mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bb2c9b31f366f210caf54e909fe7ca7
https://doi.org/10.1016/j.precamres.2012.06.002
https://doi.org/10.1016/j.precamres.2012.06.002
Publikováno v:
Canadian Journal of Earth Sciences. 49:435-454
The NE-trending Malley dyke swarm, dated herein at 2231 ± 2 Ma (U–Pb baddeleyite), extends from the central Slave craton to the vicinity of the Kilohigok basin, and may continue farther to the northeast as the geochemically similar Brichta dyke sw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13672f2ce2e0666271f2641b9707b398
https://doi.org/10.1139/e11-061
https://doi.org/10.1139/e11-061
Publikováno v:
Canadian Journal of Earth Sciences. 46:361-379
Lac de Gras diabase dykes trend north to NNE across the central Slave Province of the Canadian Shield. U–Pb baddeleyite ages of 2023 ± 2 and 2027 ± 4 Ma are interpreted as dyke emplacement ages. These ages are similar to that of the Booth River i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71707e66096350910bc66c289afdadb3
https://doi.org/10.1139/e09-026
https://doi.org/10.1139/e09-026
