Coeval Large-Scale Magmatism in the Kalahari and Laurentian Cratons During Rodinia Assembly

Richard E. Hanson; James L. Crowley; Samuel A. Bowring; Jahandar Ramezani; Wulf A. Gose; Ian W. D. Dalziel; James A. Pancake; Emily K. Seidel; Thomas G. Blenkinsop; Joshua Mukwakwami

doi:10.1126/science.1096329

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Abstract

We show that intraplate magmatism occurred 1106 to 1112 million years ago over an area of two million square kilometers within the Kalahari craton of southern Africa, during the same magnetic polarity chron as voluminous magmatism within the cratonic core of North America. These contemporaneous magmatic events occurred while the Rodinia supercontinent was being assembled and are inferred to be parts of a single large igneous province emplaced across the two cratons. Widespread intraplate magmatism during Rodinia assembly shows that mantle upwellings required to generate such provinces may occur independently of the supercontinent cycle.

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Science

Vol 304, Issue 5674
21 May 2004

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Coeval Large-Scale Magmatism in the Kalahari and Laurentian Cratons During Rodinia Assembly

By Richard E. Hanson, James L. Crowley, Samuel A. Bowring, Jahandar Ramezani, Wulf A. Gose, Ian W. D. Dalziel, James A. Pancake, Emily K. Seidel, Thomas G. Blenkinsop, Joshua Mukwakwami

Science21 May 2004 : 1126-1129

A huge region of magmatic activity spanned the ancient cores of South Africa and North America about 1108 million years ago when these continents became juxtaposed as part of a supercontinent.

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Coeval Large-Scale Magmatism in the Kalahari and Laurentian Cratons During Rodinia Assembly

By Richard E. Hanson, James L. Crowley, Samuel A. Bowring, Jahandar Ramezani, Wulf A. Gose, Ian W. D. Dalziel, James A. Pancake, Emily K. Seidel, Thomas G. Blenkinsop, Joshua Mukwakwami

Science21 May 2004 : 1126-1129

A huge region of magmatic activity spanned the ancient cores of South Africa and North America about 1108 million years ago when these continents became juxtaposed as part of a supercontinent.

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