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Antananarivo Domain

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Journal Article
Published: 01 February 2011
Canadian Journal of Earth Sciences (2011) 48 (2): 389–417.
... domains are recognized: the eastern Antongil–Masora domain and the central Antananarivo domain, the latter with distinctive belts of metamafic gneiss and schist (Tsaratanana Complex). In the eastern domain, the period of early crust formation is extended to the Paleo–Mesoarchean (3.32–3.15 Ga...
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Journal Article
Published: 01 July 2018
European Journal of Mineralogy (2018) 30 (4): 869–876.
..., Antananarivo Province, Madagascar. It occurs as tan to beige subhedral crystals, up to 1 mm in size, with a resinous luster, associated with quartz, tourmaline, orthoclase, Li-bearing mica, hübnerite, stibiotantalite, and an undetermined heftetjernite-like mineral. Electron-microprobe analysis...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2011
DOI: 10.1144/SP357.4
EISBN: 9781862396050
... domains in north-central Madagascar, the Masora and Antananarivo cratons appear to have different Mesoarchaean histories but to have shared a common history since c. 820 Ma (perhaps as early as the Neoarchaean; 2500 Ma). The Antananarivo Craton cannot be matched with an east African craton (e.g...
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Image
Geological map, structural data and cross-section through the <b>Antananarivo</b> ...
Published: 03 March 2020
Fig. 7. Geological map, structural data and cross-section through the Antananarivo Domain. This transect does not contain the complex folding that we observe in the Ikalamavony and Itremo domains. Here, foliations are steeply west-dipping. Geological polygons are from Roig et al. (2012
Journal Article
Published: 01 March 2014
European Journal of Mineralogy (2014) 26 (2): 293–308.
... two large asymmetrical absorption bands located in the red and blue domains, and centred respectively at about 605 and 430 nm. The 430 nm band is slightly more intense than that at 605 nm, which is slightly broader ( Fig. 2a ). These features generate two transmission windows centred at about 530...
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Series: GCSSEPM, GCSSEPM
Published: 01 December 2004
DOI: 10.5724/gcs.04.24.0614
EISBN: 978-0-9836096-6-7
... systematic and regional seismic data set. About 4,500 km of 2D reflection seismic data, collected in two separate surveys in 2001 and 2002, has allowed the definition of several salt tectonic domains within the salt basin. The aim of this contribution is two-fold. It will first document, in basic terms...
Journal Article
Published: 01 July 2017
The Canadian Mineralogist (2017) 55 (4): 763–786.
... Granulite–Cabo Delgado Nappe Complex (“EGCD”; Fritz et al . 2013 ) in Kenya and Tanzania, and of the Vohibory domain in southern Madagascar. Both areas underwent granulite to amphibolite facies metamorphism whose peak is estimated at ca . 640–620 Ma ( e.g ., Möller et al . 2000 , Hauzenberger et al...
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Journal Article
Published: 01 January 2000
Geological Magazine (2000) 137 (1): 39–51.
..., i.e. directly above the Antananarivo block. The boundary between the Itremo sheet and the Antananarivo block is split into two domains based on their kinematic and structural styles. West of Antsirabe (Fig. 1 ), the boundary is imbricated, and preserves evidence of contractional deformation (top...
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Image
Lithological map of the Ikalamavony <b>Domain</b> and the western margin of the An...
Published: 31 July 2017
Fig. 2. Lithological map of the Ikalamavony Domain and the western margin of the Antananarivo Domain (modified after GAF–BGR 2008 d , CGS 2009 a and Roig et al. 2012 ) showing the extent of Stenian–Tonian magmatism sampled in this study. Previous geochronological data are from
Image
Fig. 2.  ( a ) Tectonic <b>domains</b> of the Malagasy shield (exposed Precambrian...
Published: 01 February 2011
, the Vohibory (V), Androyen (Ad), Anosyen (As), Ikalamavony–Itremo (Ik–It), Antananarivo (A), Betsimisaraka domain (BS), Antongil–Masora (A/M), and Bemarivo (B) domains. The Antananarivo domain includes a major subdomain, the Tsaratanana Complex, comprising the following: Bk, Bekadoka; M, Maevatanana
Journal Article
Published: 03 March 2020
Journal of the Geological Society (2020) 177 (4): 784–798.
...Fig. 7. Geological map, structural data and cross-section through the Antananarivo Domain. This transect does not contain the complex folding that we observe in the Ikalamavony and Itremo domains. Here, foliations are steeply west-dipping. Geological polygons are from Roig et al. (2012...
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Journal Article
Published: 31 July 2017
Journal of the Geological Society (2018) 175 (1): 111–129.
...Fig. 2. Lithological map of the Ikalamavony Domain and the western margin of the Antananarivo Domain (modified after GAF–BGR 2008 d , CGS 2009 a and Roig et al. 2012 ) showing the extent of Stenian–Tonian magmatism sampled in this study. Previous geochronological data are from...
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Image
Examples of samples and field outcrops; latitude and longitude are given in...
Published: 03 March 2020
Group of the Itremo sub-domain; ( c ) S 1 foliation folded around an F 2 fold in the Itremo sub-domain; ( d ) S 1 foliation folding around F 2 folds in the Itremo sub-domain; ( e ) S 1 foliation in a sample of augen gneiss of the Betsiboka Suite in the Antananarivo Domain; ( f ) S 1 foliation
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Schematic cross-section through central Madagascar from Miandrivazo to Bric...
Published: 03 March 2020
in structural style occurs east of these sections, with the Antananarivo Domain section containing no complex fold interference patterns. Further east, Collins et al. (2003 a ) interpreted intense deformation associated with the Neoproterozoic–Cambrian Betsimisaraka Suture.
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Fig. 10.  (A, B) Field photographs of sample MAE-1005, south of Maevatanana...
Published: 01 February 2011
Fig. 10. (A, B) Field photographs of sample MAE-1005, south of Maevatanana. (A) Tonalite migmatite gneiss with pencil-thin layer-parallel leucosomes, coalesced into a shear zone with top-to-the-south -southwest extension (Antananarivo domain). (B) Layer-parallel leucosomes, 2–3 cm thick, deflected
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Plot of  ε  Nd ( t ) data v. age for igneous rocks in Madagascar. Field for...
Published: 31 July 2017
Fig. 10. Plot of ε Nd ( t ) data v. age for igneous rocks in Madagascar. Field for the average Antananarivo Domain Crust is based upon measured values of the Betsiboka Suite ( Tucker et al. 1999 ) and a 147 Sm/ 143 Nd decay constant of 6.54 × 10 −12  a −1 ( Lugmair & Marti 1978
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Schematic diagram showing our interpretation of the evolution of central Ma...
Published: 03 March 2020
); ( b ) at c . 1000 Ma the Dabolava Arc forms as an oceanic island arc outboard from the Antananarivo Domain ( Archibald et al. 2017 a ); ( c ) prior to the intrusion of the c . 850–750 Ma Imorona–Itsindro Suite, the Ikalamavony Domain is thrust over the Antananarivo–Itremo Domain; ( d
Journal Article
Published: 01 June 2001
South African Journal of Geology (2001) 104 (2): 151–166.
... of Archaean rocks, particularly in Tanzania and Madagascar, characterize the MB of East Africa and Madagascar, and these rocks either constitute marginal parts of cratonic domains or represent crustal blocks (terranes or microcontinents?) of unknown derivation. Furthermore, there is evidence for extensive...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2014
GSA Bulletin (2014) 126 (5-6): 791–811.
... Mesoproterozoic, and evolved Neoproterozoic sources. These detrital signatures best fit the combined basement ages of the Congo-Tanzania-Bangweulu block and central Madagascar (Azania), thus linking the tectonic evolution of the southernmost tip of India to these domains throughout much of the Proterozoic...
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Journal Article
Published: 01 April 2005
American Mineralogist (2005) 90 (4): 578–585.
... during metamorphism, deformation, and fluid-circulation events. Age maps presented in this paper reveal unsuspected age heterogeneities on the micrometer scale, like a now-healed fracture not visible in back-scattered electron (BSE) images or young domains less than 5 μm in width located inside an older...
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