Source and age of upper Transvaal Supergroup, South Africa: Age-Hf isotope record of zircons in Magaliesberg quartzite and Dullstroom lava, and implications for Paleoproterozoic (2.5-2.0 Ga) continent reconstruction
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- 作者：Armin Zeha ; d ; armin.zeh@kit.edu" class="auth_mail" title="E-mail the corresponding author ; Allan H. Wilsonb ; Maria Ovtcharovac
- 关键词：Kaapvaal Craton ; Magaliesberg quartzite ; Paleoproterozoic ; Continent reconstruction ; Zircon ; U&ndash ; Pb&ndash ; Hf isotopes
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：278
- 期：Complete
- 页码：1-21
- 全文大小：7707 K
文摘
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Uppermost Pretoria Group was deposited between 2.08 and 2.05 Ga.
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Detrital zircons in Magaliesberg quartzites were derived from two major sources.
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Archean zircons (3.33–2.65 Ga) stem from the nearby Pietersburg Block.
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Paleoproterozoic zircons (2.4–2.08 Ga) from sources outside of the Kalahari Craton.
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The data support the existence of Vaalbara during the early Paleoproterozoic.
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A connection with the São Francisco Craton appears unlikely.