Gondwana Maps

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The final new Gondwana map will be an evolution of a series of drafts that are produced during this 7 year-project. These drafts will be constantly updated to this website with the information about their features, release/publication date, meeting where they were presented, and other important description issues.

The maps are exclusively produced at the GDCG by the Gondwana team at UFRJ, Rio de Janeiro (Brazil).

  • Gondwana Geological Map - Pre-1st Edition

    Published: November/2017

    We present the Gondwana Geological Map Pre-1st Edition during the Gondwana 16th Congress in Bangkok (Thailand), in order to discuss with the geological scientific community whether it contemplates at its present form the main issues of the Gondwana evolution. The first edition of the map will be delivered in October, 2018, which means that we have one year ahead to correct and improve the version here presented. This version is a better update of the draft version 2.0 presented in August of 2016 during the 35th IGC in Cape Town (South Africa). Here we offer an updated geology of all major Gondwana-derived fragments, homogenized in a common legend. The resolution of this map is 1:5M, which is the same resolution of our Gondwana geological database, built up in ArcGIS software. The coastlines were drawn on Google Earth images, but simplified to our resolution and also according to the geological polygons of our database. Although this is a Jurassic (ca. 183 Ma) picture of Gondwana, the Cretaceous and Cenozoic geological units are still on the map. The proposal is to remove these layers and, when possible, draw geological inferred polygons based on drill core and geophysical data. In this case it will be the Paleogeological Map of Gondwana. The geological lineaments represent major crustal scale structures classified kinematically, not chronologically. In this version, we were able to present the age of the tectonic events represented in all metamorphic units. This information enhances the Pre-Neoproterozoic cratons, the Neoproterozoic belts, Lower Paleozoic belts, Upper Paleozoic belts and Mesozoic belts. It gives to this geological map a more geodynamic aspect. The map is on Geographic Coordinate System datum WGS 84, since it was reconstructed using GPlates software, with the African continent fixed. The final map will be projected in the best projection system for Gondwana, with less distortion of the fragments, still to be selected. The reconstruction used for this version is a hybrid model using some author’s proposals for different Gondwana segments (explained below). The fit is very tight since it represents the initial stages of Gondwana fragmentation in the Jurassic. The South Atlantic shows a gap, in part due to hyperextended margins in some segments. We introduced on the map the trace of the La Ventana-Cape Fold Belt orogenic front according to offshore data (Pangaro & Ramos, 2012). Other portions show overlap (e.g. Arabic Peninsula and northern Africa; Madagascar and Moçambique). In these places we eliminated the Cenozoic units of one of the plates, cleaning up the view. We left on purpose the coastlines overlapping each other in order to observe the geological correlation. The geological match in between the continental fragments is the ongoing phase of the project. We added the southern Gondwana smaller terranes, for a preliminary overview and discussion about this active margin. The northern terranes are not shown, and are the next step of this project. In this version we test the alternative to present Antarctica with subice topographic data, following a suggestion from the SCAR meeting at EGU in April 2017. This might help with the interpretation of the main sutures that are below the ice cap.

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  • GONDWANA GEOLOGICAL MAP – DRAFT 2.0

    Published: 20 August/2016

    This draft was presented at the 35th International Geological Congress in Cape Town (South Africa) and further also at the 48th Brazilian Geological Congress in Porto Alegre (Brazil). The geographic coordinated system was datum WGS-84. The polygons are classified with age and type of rock. Colors represent formation ages of the geological units according to the Geological Time Scale of IUGS with modifications suggested by the Gondwana Project. The pattern represents basic lithology groups. In the case of igneous rocks, the symbol also represents the chemical group (acid/intermediate/basic/ultrabasic/alkaline) The color of the pattern in the metamorphic units represent the age of the major/last tectonic event. The reconstruction was built using G-Plates, but the fit of the Gondwana fragments was modified according to several authors, listed in the draft. The configuration is for 183 Ma.

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  • GONDWANA GEOLOGICAL MAP – DRAFT 1.3

    Published: 22-26 June/2015

    This draft was presented at the Rio Gondwana Workshop. It is with polyconic projection. The polygons are classified with age and type of rock. Colors represent formation ages of the geological units according to the Geological Time Scale of IUGS. The pattern represents basic lithology groups. The reconstruction was built using G-Plates and its configuration for 150 Ma (Seton et al., 2012).

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  • GONDWANA GEOLOGICAL MAP – DRAFT 1.2

    Published: 14-18 July/2014

    This draft was presented at the Gondwana 15 – North meets South, in Madrid (Spain). It is with polyconic projection. The polygons are classified with age and type of rock. Colors represent formation ages of the geological units according to the Geological Time Scale of IUGS. The pattern represents basic lithology groups. The reconstruction was built using G-Plates and its configuration for 150 Ma (Seton et al., 2012).The fit was exported to Shapefile. It is only an approximation and first draft of what would be the new Gondwana Map. The country of Brazil is compiled from Bizzi et al. (2003) in a different scale (1:1M) that needs to be simplified.

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  • GONDWANA GEOLOGICAL MAP – DRAFT 1.0

    Published: February/2014

    This draft was presented at the CGMW meeting at UNESCO (Paris, France). It is with polyconic projection. The polygons are classified with age and type of rock. Colors represent formation ages of the geological units according to the Geological Time Scale of IUGS. The pattern represents basic lithology groups. The reconstruction was built using G-Plates and its configuration for 150 Ma (Seton et al., 2012).The fit was exported to Shapefile. It is only an approximation and first draft of what would be the new Gondwana Map.

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  • GONDWANA GEOLOGICAL MAP – PRE-DRAFT

    Published: 25-27 November/2013

    This pre-draft was presented at Geosur/2013 – International Geological Congresso On the Southern Hemisphere – Viña del Mar (Chile). It is with polar Stereographic projection. The polygons are classified with age of the rock. Colors represent formation ages of the geological units according to the Geological Time Scale of IUGS. The pattern represents basic lithology groups. The reconstruction was built according to configuration for 150 Ma of Seton et al. (2012), but modified based in Leinweber & Jokat (2012), Nürnberg & Müller (1991) and Moulin et al. (2010). The fit was exported to Shapefile.

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  • GONDWANA GEOLOGICAL MAP – PRE-DRAFT – DE WIT´S

    Published: 25-30 September/2011

    This pre-draft was presented at Gondwana 14 – Reuniting Gondwana: the East meets the West -Búzios (Brazil). It is the reconstruction of Gondwana to 150Ma with digital compilation of the geological data of De Wit´s et al map of 1988

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