Search Results - "Buchan, K. L."

Long-lived connection between southern Siberia and northern Laurentia in the Proterozoic by Ernst, R. E., Hamilton, M. A., Söderlund, U., Hanes, J. A., Gladkochub, D. P., Okrugin, A. V., Kolotilina, T., Mekhonoshin, A. S., Bleeker, W., LeCheminant, A. N., Buchan, K. L., Chamberlain, K. R., Didenko, A. N.

“…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…”
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Comparing the drift of Laurentia and Baltica in the Proterozoic: the importance of key palaeomagnetic poles by Buchan, K.L., Mertanen, S., Park, R.G., Pesonen, L.J., Elming, S.-Å., Abrahamsen, N., Bylund, G.

“…Key palaeomagnetic poles are defined as those which pass basic reliability criteria and are precisely and accurately dated. They allow a more rigorous analysis…”
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Paleomagnetism of the Distal Member of the New Glasgow Formation, Nova Scotia, Canada: New Constraints on Magnetic Polarity Stratigraphy near the Base of the Kiaman Superchron by Buchan, K. L., Chandler, F. W.

“…The ca. 315–260‐Ma Kiaman Reversed (Permo‐Carboniferous) Magnetic Superchron is an important time marker that can be used for correlation of stratigraphic…”
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Integrated Paleomagnetism and U‐Pb Geochronology of Mafic Dikes of the Eastern Anabar Shield Region, Siberia: Implications for Mesoproterozoic Paleolatitude of Siberia and Comparison with Laurentia by Ernst, R. E., Buchan, K. L., Hamilton, M. A., Okrugin, A. V., Tomshin, M. D.

“…This article reports the first joint paleomagnetic and U‐Pb geochronologic study of Precambrian diabase dikes in the Anabar Shield and adjacent Riphean cover…”
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A new plumbing system framework for mantle plume-related continental Large Igneous Provinces and their mafic-ultramafic intrusions by Ernst, R.E., Liikane, D.A., Jowitt, S.M., Buchan, K.L., Blanchard, J.A.

“…The magmatic components of continental Large Igneous Provinces (LIPs) include flood basalts and their plumbing system of giant mafic dyke swarms (radiating,…”
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PLUME-GENERATED 90° STRESS CHANGE LINKED TO TRANSITION FROM RADIATING TO CIRCUMFERENTIAL DOLERITE DIKE SWARMS OF THE SIBERIAN TRAPS LARGE IGNEOUS PROVINCE AND TO EMPLACEMENT OF THE NORILSK-TALNAKH ORE DEPOSITS by Ernst, R.E., El Bilali, H., Buchan, K. L., Jowitt, S.M.

“…A 90° change in stress orientation has been previously proposed as the trigger for the final emplacement of the world-class Norilsk-Talnakh magmatic sulfide…”
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Global record of 1600–700 Ma Large Igneous Provinces (LIPs): Implications for the reconstruction of the proposed Nuna (Columbia) and Rodinia supercontinents by Ernst, R.E., Wingate, M.T.D., Buchan, K.L., Li, Z.X.

“…Large igneous provinces (LIPs) are commonly associated with breakup of continents, and therefore, are a critical source of information to constrain…”
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Geological history of the Atira Mons large shield volcano, Beta Regio, Venus by Braga, C.H.G., Antropova, E.G., Ernst, R.E., El Bilali, H., Head, J.W., Buchan, K.L.

“…Atira Mons is a large (∼300,000 km2) low-relief (1.8 km) shield volcano, with individual flows extending up to ∼700 km from the central caldera. It is located…”
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Frontiers in large igneous province research by Ernst, Richard E., Buchan, Kenneth L., Campbell, Ian H.

“…Earth history is punctuated by events during which large volumes of mafic magmas were generated and emplaced by processes distinct from “normal” seafloor…”
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Magnetisation Episodes and Tectonics of the Grenville Province by BUCHAN, K. L, DUNLOP, D. J

“…ROCKS from the Grenville Province of the Canadian Shield characteristically have K-Ar ages of about 950 m.y. but Rb-Sr and U-Pb ages as old as 1,700 m.y. Thus…”
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RECOGNIZING MANTLE PLUMES IN THE GEOLOGICAL RECORD by Ernst, Richard E, Buchan, Kenneth L

“…Mantle plumes are recognized by domal uplift, triple junction rifting, and especially the presence of a large igneous province (LIP), dominated in the…”
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Maximum size and distribution in time and space of mantle plumes: evidence from large igneous provinces by Ernst, Richard E., Buchan, Kenneth L.

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Time‐Series Analysis of Large Igneous Provinces: 3500 Ma to Present by Prokoph, Andreas, Ernst, Richard E., Buchan, Kenneth L.

“…We outline an efficient integrated wavelet, a spectral, and a cross‐spectral approach for the time‐series analysis of geologic data. Here these techniques are…”
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Rodinia: the evidence from integrated palaeomagnetism and U–Pb geochronology by Buchan, Kenneth L., Ernst, Richard E., Hamilton, Michael A., Mertanen, Satu, Pesonen, Lauri J., Elming, Sten-Åke

“…Of many hundreds of well-defined palaeomagnetic poles that have been reported from cratons around the world in the 1700–500 Ma period, only a few are precisely…”
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Integrated paleomagnetism and U-Pb geochronology of mafic dikes of the eastern Anabar Shield region, Siberia: Implications for mesoproterozoic paleoatitude of Siberia and comparison with laurentia by Ernst, R E, Buchan, K L, Hamilton, M A, Okrugin, A V, Tomshin, M D

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Reply to comment by Stamatakos et al. on ‘Early Silurian palaeolatitude of the Springdale Group redbeds of central Newfoundland: a palaeomagnetic determination with a remanence anisotropy test for inclination error’ by Hodych, J. P., Buchan, K. L.

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Palaeomagnetism of the ca. 440 Ma Cape St Mary's sills of the Avalon Peninsula of Newfoundland: implications for Iapetus Ocean closure by Hodych, Joseph P., Buchan, Kenneth L.

“…We report on the palaeomagnetism of the gabbroic Cape St Mary's sills of the Avalon Peninsula of Newfoundland, which have previously yielded a 441±2 Ma U-Pb…”
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