![]() Huge Volcano on Jupiter's Moon Io Erupts on Regular Schedule NASA's Juno prepares to jump Jupiter's shadow "If the Ovda Regio highlands are made of basaltic rock as is most of Venus, they were likely squeezed up to their current heights by internal forces, possibly like mountains which result from plate tectonics on Earth." Allan Treiman, a Universities Space Research Association (USRA) scientist at the Lunar and Planetary Institute (LPI). ![]() "We know so little about Venus' surface," says team member Dr. The new map and results are published in the Journal of Geophysical Research: Planets. The result has potentially significant implications for the evolutionary history of Venus. They discovered that the flow is not granitic as was expected from its location, but is more likely made up of basalt rock which can form with or without water. The LPI team re-mapped the Ovda Fluctus lava flow using radar data. Scientists at the Lunar and Planetary Institute (LPI), including undergraduate student intern Frank Wroblewski from Northland College, find that a volcanic flow on Venus' Ovda Regio highlands plateau is composed of basaltic lava, calling into question the idea that the planet might once have been Earth-like with an ancient ocean of liquid water. These highlands were thought to be formed of granitic rock, like Earth's continents, which required oceans of water to form. ![]() Previous studies suggested that early Venus was once warm and wet based on the chemistry of its atmosphere and the presence of highlands. This discovery weakens the notion that Venus might once have been Earth-like with an ancient ocean of liquid water. A new study of the Ovda Fluctus lava flow on Venus indicates that it is made of basaltic lava.
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