Rb-Sr whole rock ages of the Lueshe, Kirumba and Numbi igneous complexes (Kivu, Democratic Republic of Congo) and the break-up of the Rodinia supercontinent

A. B. Kampunzu; J. D. Kramers; M. N. Makutu

doi:10.1016/S0899-5362(97)00134-6

Rb-Sr whole rock ages of the Lueshe, Kirumba and Numbi igneous complexes (Kivu, Democratic Republic of Congo) and the break-up of the Rodinia supercontinent

A. B. Kampunzu, J. D. Kramers, M. N. Makutu

Research output: Contribution to journal › Article › peer-review

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Abstract

The ages of the Lueshe, Kirumba and Numbi alkaline and carbonatitic complexes have been determined at 822±120 Ma, 803±22 Ma and 830±51 Ma, respectively, with initial ⁸⁷Sr/⁸⁶Sr ratios around 0.703. These ages are significantly older than Rb-Sr and K-Ar mineral and whole rock ages reported previously, and also predate a 739 Ma zircon age obtained on a similar complex in Burundi. The ca 800 Ma results are interpreted to date the break-up of the Rodinia supercontinent in eastern central Africa.

Original language	English
Pages (from-to)	29-36
Number of pages	8
Journal	Journal of African Earth Sciences
Volume	26
Issue number	1
DOIs	https://doi.org/10.1016/S0899-5362(97)00134-6
Publication status	Published - Jan 1998
Externally published	Yes

ASJC Scopus subject areas

Geology
Earth-Surface Processes

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abstract = "The ages of the Lueshe, Kirumba and Numbi alkaline and carbonatitic complexes have been determined at 822±120 Ma, 803±22 Ma and 830±51 Ma, respectively, with initial 87Sr/86Sr ratios around 0.703. These ages are significantly older than Rb-Sr and K-Ar mineral and whole rock ages reported previously, and also predate a 739 Ma zircon age obtained on a similar complex in Burundi. The ca 800 Ma results are interpreted to date the break-up of the Rodinia supercontinent in eastern central Africa.",

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AU - Kramers, J. D.

AU - Makutu, M. N.

PY - 1998/1

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AB - The ages of the Lueshe, Kirumba and Numbi alkaline and carbonatitic complexes have been determined at 822±120 Ma, 803±22 Ma and 830±51 Ma, respectively, with initial 87Sr/86Sr ratios around 0.703. These ages are significantly older than Rb-Sr and K-Ar mineral and whole rock ages reported previously, and also predate a 739 Ma zircon age obtained on a similar complex in Burundi. The ca 800 Ma results are interpreted to date the break-up of the Rodinia supercontinent in eastern central Africa.

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Rb-Sr whole rock ages of the Lueshe, Kirumba and Numbi igneous complexes (Kivu, Democratic Republic of Congo) and the break-up of the Rodinia supercontinent

Abstract

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