Researchers studying archival data from NASA’s Magellan mission have found new evidence that tectonic activity may be deforming the surface of Venus. The planet’s vast, quasi-circular features called coronae could reveal ongoing tectonics, according to a new study published in Science Advances.
Coronae are unique structures on Venus’ surface, thought to form where hot, buoyant material from the mantle rises and pushes against the lithosphere above. However, scientists have long been puzzled by their origins. The researchers used sophisticated 3D geodynamic models to compare the formation scenarios of coronae with combined gravity and topography data from Magellan.
Their findings suggest that many of Venus’ coronae are likely being shaped by tectonic processes, including subduction, where buoyant plumes of hot rock push upward into the lithosphere. This process could be driving volcanism above it. The researchers also identified several places where another process, called lithospheric dripping, may be occurring.
The study provides a new insight into the possible subsurface processes currently shaping Venus’ surface. It highlights the importance of combining gravity and topography data to understand these complex phenomena. By studying coronae on Venus, scientists may gain valuable insights into Earth’s past and potentially even inform strategies for searching for life beyond our planet.
Source: https://astrobiology.com/2025/05/lava-world-recon-possible-tectonic-activity-on-venus.html