U-Pb geochronology and paleomagnetism of the Westerberg Sill Suite, Kaapvaal Craton - Support for a coherent Kaapvaal-Pilbara Block (Vaalbara) into the Paleoproterozoic?
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- 作者：Tobias C. Kampmanna ; tobias.kampmann@ltu.se" class="auth_mail" title="E-mail the corresponding author ; Ashley P. Gumsleya ; Michiel O. de Kockb ; Ulf Sö ; derlunda ; c
- 关键词：Apparent polar wander path ; Baddeleyite U&ndash ; Pb geochronology ; Kaapvaal ; Paleomagnetism ; Paleoreconstruction ; Vaalbara
- 刊名：Precambrian Research
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：269
- 期：Complete
- 页码：58-72
- 全文大小：5448 K
文摘
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Ages of ca. 2.43–2.44 Ga are determined for a mafic suite in the Kaapvaal craton.
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Paleomagnetism yields a Virtual Geomagnetic Pole (18.9°N, 285.0°E, A95 = 14.1°, K = 43.4).
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The possible primary or secondary origin of the VGP is discussed.
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Results are used to complement the apparent polar wander path of Kaapvaal.
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A test of the supercraton hypothesis Kaapvaal + Pilbara (Vaalbara) is performed.