GeologyMedicine

H. Fritz, M. Abdelsalam, K. Ali, B. Bingen, A. Collins, A. Fowler, W. Ghebreab, C. Hauzenberger, P. Johnson, T. Kusky, P. Macey, S. Muhongo, R. Stern, G. Viola

2013.10.1JOURNAL OF AFRICAN EARTH SCIENCES

DOI: 10.1016/j.jafrearsci.2013.06.004

tlooto Summary

A first phase of ocean closure and accretion of terranes defines the East African Orogeny, which mainly affected the southern parts of east Africa and Madagascar, and was followed by extension phases that were accompanied by emplacement of late- to post-tectonic granitoids.

Abstract

Graphicalabstract Condensed timetable of major geologic events in the East African Orogen. Opening of the Mozambique Ocean and formation of rift basins in Zambia, Malawi, Mozambique and SW Madagascar was accompanied by emplacement of anorthosite melt in extending crust. A first phase of ocean closure and accretion of terranes defines the East African Orogeny. The second orogen phase, Kuungan Orogeny, mainly affected the southern parts of east Africa and Madagascar. Both shortening events were followed by extension phases that were accompanied by emplacement of late- to post-tectonic granitoids. EGCD: Eastern Granulite–Cabo Delgado Nappe Complex; Madag: Madagascar; Ub–Us: Usagaran/Ubendian Belts; WG: Western Granulite Belt; IB (Z–M): Irumide Belt of Zambia and Malawi; IB (M): Irumide Belt of Mozambique.

Citation format

FRITZ, H., et al. Orogen styles in the east African orogen: A review of the neoproterozoic to cambrian tectonic evolution. JOURNAL OF AFRICAN EARTH SCIENCES, 2013, 86: 65–106.