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Effects of Water on the Density and Elevation of Tesserae on VenusWhile the current conditions on Venus are inhospitable, with surface temperatures of ~ 470 °C, pressures of 92 bars, and a CO2 dominated atmosphere, early Venus may have had a more temperate climate with water on the surface. Water is not only crucial to understanding the habitability potential of Venus, but also has major implications for the tectonic regime and thermal evolution of a planet.

Tesserae are believed to be the oldest exposed features on the surface of Venus and may have formed during a period with higher water content. Some of this water might have been preserved as hydrous minerals in the Venusian subsurface. The presence of these minerals has an effect on the density profiles and isostatic behaviour of the tesserae and therefore requires a more detailed investigation.

Here we will present results of phase equilibria and isostasy modelling on a range of Tesserae-analogue rock compositions with varying water content and along a range of potential thermal gradients. We compare our results to anhydrous models performed previously under similar thermal regime to constrain the conditions (rock composition, thermal gradient, and water content) needed for tesserae stability.
Document ID
20230018333
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
A R Baker ORCID
(The Open University Milton Keynes, United Kingdom)
J Semprich ORCID
(The Open University Milton Keynes, United Kingdom)
S P Schwenzer ORCID
(The Open University Milton Keynes - United Kingdom)
J Filiberto ORCID
(Johnson Space Center Houston, United States)
R C Greenwood ORCID
(The Open University Milton Keynes, United Kingdom)
Date Acquired
December 18, 2023
Publication Date
March 11, 2024
Publication Information
Publisher: Lunar and Planetary Institute
Subject Category
Lunar and Planetary Science and Exploration
Meeting Information
Meeting: 55th Lunar and Planetary Science Conference (LPSC)
Location: The Woodlands, TX
Country: US
Start Date: March 11, 2024
End Date: March 15, 2024
Sponsors: Lunar and Planetary Institute, National Aeronautics and Space Administration
Funding Number(s)
WBS: 811073
CONTRACT_GRANT: E-00078-01
CONTRACT_GRANT: 124.18
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
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