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Central Sahara Shield

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Journal Article
Published: 01 June 2021
South African Journal of Geology (2021) 124 (2): 383–390.
... Fitri inlier of Chad suggest that it may be a composite terrane of older cratonic blocks or microcontinents with intervening Mesoproterozoic to Neoproterozoic domains and referred to as the ‘Central Sahara Shield’. It is postulated that the older crust and juvenile crust were sutured together along...
FIGURES
First thumbnail for: The enigmatic continental crust of North-<span cla...
Second thumbnail for: The enigmatic continental crust of North-<span cla...
Third thumbnail for: The enigmatic continental crust of North-<span cla...
Journal Article
Published: 01 June 2021
South African Journal of Geology (2021) 124 (2): 353–382.
... the age and composition of crystalline basement are unknown across large sectors of the Sahara. Most of Africa comprises Archaean cratons surrounded by Palaeo- to Mesoproterozoic orogenic belts, which together constitute Africa’s three major shields (the Southern, Central and West African Shields...
FIGURES
First thumbnail for: Geochemical reconnaissance of the Guéra and Ouadda...
Second thumbnail for: Geochemical reconnaissance of the Guéra and Ouadda...
Third thumbnail for: Geochemical reconnaissance of the Guéra and Ouadda...
Journal Article
Journal: Geology
Published: 01 July 1994
Geology (1994) 22 (7): 641–644.
...R. Black; L. Latouche; J. P. Liégeois; R. Caby; J. M. Bertrand Abstract Concepts developed in the recently published model of the Aïr region (eastern Tuareg shield; Niger, Africa) as a college of three displaced terranes integrated in a single geodynamic model lead us to propose a terrane map...
Series: GSA Special Papers
Published: 19 May 2022
DOI: 10.1130/2021.2554(17)
EISBN: 9780813795546
... Variscides) as part of the northern Gondwana passive margin. The main sources of these sediments would have been the West African craton in the western regions of the passive margin (Moroccan Meseta and central European Paleozoic massifs), and the Arabian-Nubian Shield and/or Sahara metacraton in the eastern...
Book Chapter

Author(s)
Alain Piqué
Series: GSA Special Papers
Published: 01 January 1989
DOI: 10.1130/SPE230-p115
... of the Reguibate shield. Zemmour and Anti-Atlas are parts of a marginal belt, mildly deformed, around the West African craton. The Coastal Block, North-central, and Northeastern domains constitute the Moroccan Hercynian belt, which has been more or less strongly deformed between Late Devonian and Late...
Journal Article
Journal: Geology
Published: 01 November 1992
Geology (1992) 20 (11): 1023–1026.
...F. F. Bonavia; J. Chorowicz Abstract In southern Ethiopia and northern Kenya, higher grade Neoproterozoic rocks of the Mozambique orogenic belt and lower grade Arabian-Nubian shield are juxtaposed. Because both belts formed from a collision with African cratons (Tanzania, Eastern Sahara...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1969
AAPG Bulletin (1969) 53 (3): 732–733.
... and by Axelrod’s tree-ring distribution studies. Additional support includes: (1) A single Jurassic climatic and floral province extends from the Ust-‘Urt Plateau, on the eastern side of the Caspian Sea, onto the Indian shield. (2) The late Paleozoic sequence of the northern Indian shield is remarkably like...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1984
AAPG Bulletin (1984) 68 (9): 1221.
... near the central southern edge of the Sahara. The Interior rift system formed by the sialic block that includes the Wiggins and Sabine uplifts, remaining briefly with South America as North America moved north-northeast along the east Texas transform and a parallel one at the east end of the Wiggins...
Journal Article
Published: 01 June 2021
South African Journal of Geology (2021) 124 (2): 311–312.
.... The paper on the Central Sahara Shield (de Wit et al.) stems from the AEON-MIT-De Beers African Craton project led by Maarten de Wit and Sam Bowring. The working draft of the paper was written by Maarten prior to 2012. This draft was updated and revised by Frank Dudas (MIT) and Robert Buchwaldt and has been...
FIGURES
First thumbnail for: INTRODUCTION
... zircon ages derived from surrounding crystalline complexes of the Cyclades, the Menderes Massif, Egypt, and the Levant. Possible provenances of the zircons of the eastern Mediterranean domains are the Sahara meta-craton, the Arabian-Nubian Shield, and the Kibaran belt of central Africa. Because the age...
Image
Conceptual configuration of Northern Africa and South America in a Gondwana setting with regional correlations between notheast Brazil and Cameroon, and between Saharan Africa and the Arabian-Nubian Shield from de Wit et al. (2021). The figure shows the extent of known Pan African regions peripheral to central Saharan Africa and the Central Sahara Belt. DB=Dahomey Belt; B-T-B=Buem-Togo Belt; BB=Brazilia Belt; UB=Uruacu Belt; WCD=West Cameroon Domain; AYD=Adamawa-Yadé Domain; YD=Yaoundé Domain; RSZ=Raghane Shear Zone; ASZ=Ashwa Shear Zone; KKS=Keraf-Kabus-Sekerr Suture; SD=Southern Domain; CD=Central Domain, CeD=Ceara Domain; ADS=Atmur-Delgo Suture; R=Rahib; WT=West-ern Tibesti; ET=Eastern Tibesti; JM=Jebel Moya, Darfur; MK=Mayo Kebbi.
Published: 01 June 2021
regions peripheral to central Saharan Africa and the Central Sahara Belt. DB=Dahomey Belt; B-T-B=Buem-Togo Belt; BB=Brazilia Belt; UB=Uruacu Belt; WCD=West Cameroon Domain; AYD=Adamawa-Yadé Domain; YD=Yaoundé Domain; RSZ=Raghane Shear Zone; ASZ=Ashwa Shear Zone; KKS=Keraf-Kabus-Sekerr Suture; SD=Southern
Image
Northern Africa and South America in a Gondwana setting showing the extent of known Pan African regions peripheral to central Saharan Africa. Box in central Sahara is the study area. Also highlighted are the regional correlations between northeast Brazil and Cameroon, and between Saharan Africa and the Arabian-Nubian Shield. The small Gondwana inset shows the location of the Neoproterozoic East African Orogen (EAO) and West African Orogen (WAO), as well as the Borborema (BP) and Tocantins Provinces (TP) of Brazil. DB=Dahomey Belt; B-T-B=Buem-Togo Belt; BB=Brazilia Belt; UB=Uruacu Belt; WCD=West Cameroon domain; AYD=Adamawa-Yadé domain; YD=Yaoundé domain; RSZ=Raghane Shear Zone; ASZ=Ashwa Shear zone; KKS=Keraf-Kabus-Sekerr suture; SD=southern domain; CD=central domain, CeD=Ceará Domain; ADS=Atmur-Delgo suture; R=Rahib; WT=western Tibesti; ET=eastern Tibesti; JM=Jebel Moya, Darfur; MK=Mayo Kebbi.
Published: 01 June 2021
Figure 1. Northern Africa and South America in a Gondwana setting showing the extent of known Pan African regions peripheral to central Saharan Africa. Box in central Sahara is the study area. Also highlighted are the regional correlations between northeast Brazil and Cameroon, and between
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1962
AAPG Bulletin (1962) 46 (4): 529–534.
...Emile Rod One of the outstanding features of the structure map of North Africa is the fault zone separating the folded mountains of the Maghreb (Berberie) in the north from the Sahara shield in the south. It stretches from the Atlantic coast north of Agadir, in an east-northeasterly direction...
FIGURES
First thumbnail for: Fault Pattern, Northwest Corner of <span class="se...
Second thumbnail for: Fault Pattern, Northwest Corner of <span class="se...
Image
(a) Schematic palaeogeographical reconstruction of Rodinia including representation of Rodinia dispersal rifting and approximate timing. NCC, North China Craton; SC, South China; Kal, Kalahari; RdlP, Rio de la Plata; SMC, Sahara Metacraton; WAC, West Africa Craton. (b) Schematic representation of Gondwana in the early Paleozoic depicting location of the Avalonian–Cadomian Belt dispersed around Amazonia and western to northern Africa; (inset) schematic representation of the Avalonian–Cadomian Belt in early Ediacaran, including continuation in eastern Baltica. WAv, West Avalonia; EAv, East Avalonia; Oax, Oaxaquia; Car, Carolina; Ib, Iberia; ANS, Arabian Nubian Shield; Af, Afghanistan; IC, Indochina; Qia, Qiangtang; Lh, Lhasa; Hm, Himalaya; MWS, Mawson. (c) Alternative early Ediacaran reconstruction of the Avalonian terranes as flanking eastern Baltica. The position of Ganderia, separate from the other Avalonian terranes and on NW Amazonia, should be noted. (d) Reconstruction of the Central Asian terranes in the Ediacaran flanking Baltica and Siberia . It should be noted that the names and approximate locations of terranes and units in the figure follow terminology used in the present study. Source: (a) modified from Cawood et al. (2013); (b) after Cawood et al. (2021); inset after after Nance et al. 2002; (c) after Barr et al. (2014); (d) after Şengör et al. (1993).
Published: 21 November 2024
Fig. 1. ( a ) Schematic palaeogeographical reconstruction of Rodinia including representation of Rodinia dispersal rifting and approximate timing. NCC, North China Craton; SC, South China; Kal, Kalahari; RdlP, Rio de la Plata; SMC, Sahara Metacraton; WAC, West Africa Craton. ( b ) Schematic
Journal Article
Published: 01 March 2016
Bulletin de la Société Géologique de France (2016) 187 (2): 73–82.
... displaced terranes in the Tuareg shield (central Sahara) . – Geology , 22 , 641 – 644 . Bouzid A. Bayou B. Liegeois J.-P. Bourouis S. Bougchiche S. Bendekken A. Abtout A. Bouklouf W. Oubadi A. ( 2015 ). – Lithospheric structure of Atakormetacratonic volcanic...
FIGURES
First thumbnail for: Tectono-magmatic reactivation of Téfidet Cretaceou...
Second thumbnail for: Tectono-magmatic reactivation of Téfidet Cretaceou...
Third thumbnail for: Tectono-magmatic reactivation of Téfidet Cretaceou...
Journal Article
Journal: Geology
Published: 01 May 2013
Geology (2013) 41 (5): 615–618.
... terranes in the Tuareg Shield (central Sahara) Geology v. 22 p 641 – 644 ., doi:10.1130/0091-7613(1994)022<0641:PADTIT>2.3.CO;2 Bordet P. , 1953 , La série de Serouenout (Ahaggar oriental) est d’âge “Continental Intercalaire” (Crétacé Moyen) : Comptes Rendus de l’Académie des...
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First thumbnail for: Eocene exhumation of the Tuareg <span class="searc...
Second thumbnail for: Eocene exhumation of the Tuareg <span class="searc...
Third thumbnail for: Eocene exhumation of the Tuareg <span class="searc...
Journal Article
Published: 15 May 2017
Journal of the Geological Society (2017) 174 (5): 817–835.
... of the area, in agreement with our results. Eastward, in the central and eastern Sahara, the evolution becomes more diverse. In the Illizi Basin, LTT and organic matter maturity were used by English et al. (2016) to support Cenozoic uplift undergone by the Tuareg Shield. However, their borehole data...
FIGURES
First thumbnail for: Mesozoic evolution of NW Africa: implications for ...
Second thumbnail for: Mesozoic evolution of NW Africa: implications for ...
Third thumbnail for: Mesozoic evolution of NW Africa: implications for ...
Journal Article
Published: 01 August 1966
Bulletin of the Seismological Society of America (1966) 56 (4): 815–840.
.... ada are plotted in Figure 4. Negative values which imply relatively early arrivals are associated with the Canadian shield and the buried extension of the shield in the Central Lowlands. In contrast, Western Cordilleran values indicate relatively late reception. Less extensive data infer...
Journal Article
Published: 01 March 1972
Journal of the Geological Society (1972) 128 (2): 135–150.
...RICHARD CURTIS SELLEY Abstract The Precambrian shields of the Sahara and Arabia are overlain by a thick laterally extensive Cambro-Ordovician sandstone blanket. This is generally divisible into a lower coarse pebbly cross-bedded facies overlain by a finer-grained facies with a characteristic suite...
Journal Article
Published: 16 December 2011
Geological Magazine (2012) 149 (5): 783–797.
... position within the Arabian–Nubian Shield (b). Recent geochronological and Sr–Nd isotopic studies of igneous rocks exposed in the Meatiq Gneiss Dome, one of several gneiss domes in the Central Eastern Desert ( Fig. 1 ), did not support the presence of pre-Neoproterozoic basement in the core...