Processes forming topography at Atla Regio, Venus

Elyse Schinella, Craig O'Neill, Juan Carlos Afonso

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


    Venus and Earth share a similar size, mass and density, however Venus' high surface temperatures, pressures, dehydrated crust and absence of subduction zones, makes the surface unique. One area which shares similar volcanic landforms to the Earths' is the equatorial highland Alta Regio, which extends from 170°E-220°E 30°N-10°S. The similarity of these volcanic features to Earth based examples, as well as an understanding of the processes which produced them, can help to constrain the deformational mechanisms that may have operated at Atla Regio. This study will aim to compare volcanic topography at Atla Regio to topography observed within the Hawaiian and Cape Verde Archipelagos, Earth to determine if similar deformational processes occurred within Atla Regio. On Earth, three main processes act to produce volcanic topography and include: 1) uplift associated with a mantle plume impinging on the underside of the lithosphere; 2) rifting and volcanism associated with the mantle plume and; 3) volcanic loading, where the extra volcanic mass is compensated by flexure of the lithosphere. An understanding of the processes that gave rise to topography at Atla Regio is fundamental to determine a suitable rheological profile within this area.
    Original languageEnglish
    Title of host publicationProceedings of the 10th Australian Space Science Conference
    EditorsWayne Short, Iver Cairns
    Place of PublicationSydney
    PublisherNational Space Society of Australia
    Number of pages13
    ISBN (Print)9780977574049
    Publication statusPublished - 2011
    EventAustralian Space Science Conference (10th : 2010) - Brisbane
    Duration: 27 Sept 201030 Sept 2010


    ConferenceAustralian Space Science Conference (10th : 2010)


    • Atla Regio
    • Venus
    • Hawaii
    • Cape Verde
    • mantle plume
    • volcanism
    • lithospheric flexure


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