Coeval large-scale magmatism in the Kalahari and Laurentian Cratons during Rodinia assembly
Hanson, Richard E, Crowley, James L., Bowring, Samuel A., Ramezani, Jahandar, Gose, Wulf A., Dalziel, Ian W.D., Pancake, James A., Seidel, Emily K., Blenkinsop, Tom, and Mukwakwami, Joshua (2004) Coeval large-scale magmatism in the Kalahari and Laurentian Cratons during Rodinia assembly. Science, 304 (5674). pp. 1126-1129.
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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 magmatismwithin 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 mayoccur independently of the supercontinent cycle.
| Item ID: | 609 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1095-9203 |
| Keywords: | Umkondo, large igneous province, plume, Rodinia, supercontinent |
| Additional Information: | © 2004 American Association for the Advancement of Science. |
| Date Deposited: | 09 Oct 2006 |
| FoR Codes: | 04 EARTH SCIENCES > 0403 Geology > 040313 Tectonics @ 100% |
| SEO Codes: | 97 EXPANDING KNOWLEDGE > 970104 Expanding Knowledge in the Earth Sciences @ 100% |
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