U-Pb zircon ages from the southwestern Karoo Basin, South Africa--Implications for the Permian-Triassic boundary
2017 ◽
2004 ◽
Vol 116
(9)
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pp. 1294
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2003 ◽
Vol 115
(9)
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pp. 1133
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2003 ◽
Vol 206
(1-2)
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pp. 101-117
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