Results 191 to 200 of about 24,581 (234)

The Juiz De Fora Granulite Complex of the Central Ribeira Belt, SE Brazil: A Paleoproterozoic Crustal Segment Thrust During the Pan-African Orogeny

Gondwana Research, 1998
Abstract The granulites of the Juiz de Fora complex occur within thick basement thrust slices associated with the Pan-African shortening process in the central segment of the Ribeira belt. Five lithological units of the Intermediate tectonic domain of the belt can be identified on the basis of detailed geological mapping: a) orthogranulites, b ...
M. Heilbron, B. P. Duarte, José Renato Nogueira   +2 more
semanticscholar   +2 more sources

AFRICA | Pan-African Orogeny

, 2005
A. Kröner
semanticscholar   +2 more sources

Pan–African Orogeny in Sri Lanka: The Eppawala Carbonatite and Surrounding Rocks

Gondwana Research, 1999
M.W.K. Weerakoon, K. Shuto, H. Kagami
semanticscholar   +2 more sources

The “Taourirt” magmatic province, a marker of the closing stage of the Pan-African orogeny in the Tuareg Shield: review of available data and Sr–Nd isotope evidence

Journal of African Earth Sciences, 2003
A. Azzouni-Sekkal, J. Liégeois, Faten Bechiri-Benmerzoug, Safia Belaidi-Zinet, B. Bonin   +4 more
semanticscholar   +3 more sources

SHRIMP zircon geochronological constraints on a Pan-African orogeny in the Yadong Area, Southern Tibet

Geochimica et Cosmochimica Acta, 2006
Wencan Liu, Zhiguang Zhou, X. Zhang, Xiaobo Zhao   +3 more
semanticscholar   +2 more sources

Syn-kinematic ferroan high-K I-type granites from Dschang in southwestern Cameroon: U–Pb age, geochemistry and implications for crustal growth in the late Pan-African orogeny

Special Publications, 2020
The Dschang granites, SW Cameroon, are post-Panafrican granitoids, hosted in Paleoproterozoic orthogneiss in the Western domain of the Central African fold belt.
M. Kwékam, I. Dunkl, E. Fozing, G. Hartmann, T. Njanko, K. J. Tcheumenak, E. Njonfang   +6 more
semanticscholar   +1 more source

Early and late Pan-African orogenies in the Aïr assembly of terranes (Tuareg shield, Niger)

Precambrian Research, 1994
Our study of the (60,000 km 2) Air massif, which comprises the southeastern extension of the Tuareg shield in the Niger Republic, has identified three major displaced terranes: Aouzegueur, Barghot and Assod6. These terranes were all affected differentially by the Pan-African orogeny during an early major phase (750-660 Ma) and a late "follow-up" phase (
Liégeois, Jean-Paul, Black, Russell, Navez, Jacques, Latouche, L.   +3 more
openaire   +1 more source

Geophysical evidence for doming during the Pan-African/Brasiliano orogeny in the Seridó belt, Borborema Province, Brazil

Precambrian Research, 2020
Abstract The Neoproterozoic Serido belt located in the Borborema Province, NE Brazil, was deformed and metamorphosed in the Pan-African/Brasiliano orogeny. The basement rocks of the belt were submitted to intense partial melting to form dome-like structures as documented in the Santa Luzia anatetic dome.
Nitzschia R.R. Domingos, Walter E. Medeiros, Roberto G. Oliveira   +2 more
openaire   +1 more source

Structural features and age of gold mineralization in the Troia Massif, Borborema Province, NE Brazil: A Paleoproterozoic (∼2029 Ma) hypozonal orogenic gold deposit overprinted by the late Neoproterozoic Brasiliano/Pan–African orogeny

Journal of South American Earth Sciences, 2019
Hypozonal orogenic gold mineralization has been recently recognized in the Troia Massif, an Archean/Paleoproterozoic basement inlier within the Neoproterozoic Borborema Province, NE Brazil.
Felipe Grandjean da Costa, E. Klein, M. A. Galarza, Tercyo Pinéo   +3 more
semanticscholar   +1 more source

Tectonometamorphic evolution of Ghana, Togo and Benin in the light of the Pan-African/Brasiliano orogeny

Tectonophysics, 1993
Abstract The South Pan-African belt of West Africa (Ghana, Togo and Benin province) can be divided into three domains: 1. (1) the external nappes thrust over the West African craton, derived from passive-margin sedimentary deposits (Middle to Late Proterozoic) and displaying middle- to high-pressure metamorphism, such as the Kante and Atacora ...
C. Castaing, C. Triboulet, J.L. Feybesse, P. Chèvremont   +3 more
openaire   +1 more source