Zobrazeno 1 - 10 of 48 pro vyhledávání: '"Thomas E. Krogh"'
1
The Pikwitonei Granulite Domain, Manitoba: a giant Neoarchean high-grade terrane in the northwest Superior ProvinceThis article is one of a series of papers published in this Special Issue on the theme of Geochronology in honour of Tom Krogh.N. Machado, T.E. Krogh, and W. Weber are deceased
Autor: Nuno Machado, Larry M. Heaman, M. T. Corkery, Ch. O. Böhm, Thomas E. Krogh, W. Weber
Publikováno v: Canadian Journal of Earth Sciences. 48:205-245
The Pikwitonei Granulite Domain located at the northwestern margin of the Superior Province is one of the largest Neoarchean high-grade terranes in the world, with well-preserved granulite metamorphic assemblages preserved in a variety of lithologies
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::44ce939289840bf927db087cc625aa38
https://doi.org/10.1139/e10-058
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4
Timing of Paleoproterozoic granitoid magmatism along the northwestern Superior Province margin: implications for the tectonic evolution of the Thompson Nickel BeltThis article is one of a series of papers published in this Special Issue on the theme of Geochronology in honour of Tom Krogh
Autor: Nuno Machado, W. Weber, M. T. Corkery, Thomas E. Krogh, Larry M. Heaman
Publikováno v: Canadian Journal of Earth Sciences. 48:325-346
The U–Pb geochronology of three granitoid plutons and three granitic pegmatite dykes, largely from the Thompson Nickel Belt located along the northwestern Superior craton margin, was investigated to place constraints on the timing of felsic magmati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::532e7bb36cce671ebdb20d5fdc48964a
https://doi.org/10.1139/e10-079
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5
Indentor tectonism in the eastern Grenville Province
Autor: Sandra L. Kamo, Thomas E. Krogh, Charles F. Gower
Publikováno v: Precambrian Research. 167:201-212
The easternmost Grenville Province behaved in a structurally distinct manner from the remainder of the eastern Grenville Province (EGP) during Grenvillian orogenesis (1085–985 Ma). Geochronological, structural and geophysical data are used to demon
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::177ca980a10d55bdb4daa8f56d9fc9f8
https://doi.org/10.1016/j.precamres.2008.08.004
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6
Proterozoic southward accretion and Grenvillian orogenesis in the interior Grenville Province in eastern Labrador: Evidence from U–Pb geochronological investigations
Autor: Charles F. Gower, Kim KwokK. Kwok, Sandra L. Kamo, Thomas E. Krogh
Publikováno v: Precambrian Research. 165:61-95
This study is a fascinating example, from the eastern Grenville Province, of unraveling the triple challenges inherent in the geochronological investigation of any multi-orogenic region, namely inheritance, emplacement and subsequent metamorphism. Th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae1d734940136b10b0cecb5627bd0e6c
https://doi.org/10.1016/j.precamres.2008.06.007
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7
Thrusting and Extension in the Scandian Hinterland, Norway: New U-Pb Ages and Tectonostratigraphic Evidence
Autor: M. E. Bickford, Terje Thorsnes, Robert D. Tucker, Thomas E. Krogh, Øystein Nordgulen, Peter Robinson, Arne Solli, David G. Gee
Publikováno v: American Journal of Science. 304:477-532
A new regional compilation map and U-Pb ages on a suite of variably deformed, Ordovician, calc-alkaline intrusive igneous rocks requires a reinterpretation of the nature of continental collision and extensional exhumation of deep-seated rocks of the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c234e108dc7253b9bbb6740ee6740f69
https://doi.org/10.2475/ajs.304.6.477
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8
Historical Development of Zircon Geochronology
Autor: Ian S. Williams, Thomas E. Krogh, Donald W. Davis
Publikováno v: Reviews in Mineralogy and Geochemistry. 53:145-181
An exact knowledge of rock formation ages is perhaps the single most important tool needed for assembling the geologic record into a coherent history. Moreover, the age of Earth and the time scale of pre-human events are central to a civilization’s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7570917732640705981f8fe1fb85776b
https://doi.org/10.2113/0530145
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9
A U–Pb geochronological review of the Proterozoic history of the eastern Grenville Province
Autor: Thomas E. Krogh, Charles F. Gower
Publikováno v: Canadian Journal of Earth Sciences. 39:795-829
The geological evolution of the eastern Grenville Province can be subdivided into three stages. During the first stage, namely pre-Labradorian (> 1710 Ma) and Labradorian (1710–1600 Ma) events, a continental-marginal basin was created and subsequent
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23480fe4d7c25aaff0c837fd0e9cd613
https://doi.org/10.1139/e01-090
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10
Augmented and reassessed U–Pb geochronological data from the Labradorian–Grenvillian front in the Smokey archipelago, eastern Labrador
Autor: Thomas E. Krogh, J. Victor Owen, Charles F. Gower, Sandra L. Kamo
Publikováno v: Canadian Journal of Earth Sciences. 39:831-843
Four U–Pb dating sites straddling the Grenville front on the Labrador coast were investigated. Sites 1 and 2 exhibit complex intrusive, deformational, and metamorphic histories and were studied in detail, whereas two simpler outcrops (sites 3 and 4)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::da785fda1bfe547250868dbe51e31460
https://doi.org/10.1139/e01-091
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